| [{"i":"65bk4","f":"4r1k1/pp5p/6p1/2b2n2/5B2/7Q/PP2r1PP/3q1R1K w - - 0 30","m":"f1d1 e2e1 d1e1 e8e1","r":574,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"66TNn","f":"1k6/ppp4r/3p4/4pnrq/7p/4b3/PPP1N3/RK3Q1R b - - 5 33","m":"f5d4 f1f8 h5e8 f8e8","r":469,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"69QwE","f":"4r1k1/1p2qp2/p2p2p1/3P1B1p/2P3QN/2b5/P4PPP/1R4K1 w - - 1 27","m":"g4g3 e7e1 b1e1 e8e1","r":568,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"6E45z","f":"2r4k/p1q3pp/b3Qp1B/4p3/P3P3/8/5PPP/R1q3K1 w - - 0 31","m":"a1c1 c7c1 h6c1 c8c1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6FSwy","f":"4N1k1/p2r1pbp/4p1p1/2P5/3r4/8/P4PPP/1RR3K1 w - - 7 28","m":"b1b8 d4d1 c1d1 d7d1","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6FjcO","f":"5r2/p2k1rQ1/Ppp4p/3pq3/1P6/2P5/6PP/3R3K w - - 0 37","m":"g7e5 f7f1 d1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"6KlkS","f":"4r3/pppk1rpp/2nb1n2/4q3/5N2/5Q2/PPP2PPP/RNBR2K1 w - - 10 18","m":"b1c3 e5e1 d1e1 e8e1","r":504,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"6LRzc","f":"3r2k1/5ppp/8/1p6/1Pp2P2/P1P2P1P/3qQ1K1/4R3 b - - 5 29","m":"d2f4 e2e8 d8e8 e1e8","r":461,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"6LtLZ","f":"2r2Q1k/1b4pp/p2b4/1p3R2/2p1P3/P2P2qP/1PPN2P1/5RK1 b - - 7 27","m":"d6f8 f5f8 c8f8 f1f8","r":492,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"6PDEH","f":"r1b1k2r/p3nppp/1p2p3/1B6/3R4/2N5/PPP2PPP/2K4R b kq - 1 13","m":"e8f8 d4d8","r":438,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6PUeA","f":"k3r3/pp3R1p/2p2p2/3p1P2/8/3P2PB/qPP1Q2P/2KR4 b - - 0 25","m":"e8e2 f7f8 e2e8 f8e8","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6TYiU","f":"4r1k1/pp3ppp/8/8/8/P7/5PPP/3R2K1 b - - 0 24","m":"e8e2 d1d8 e2e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"6ciVb","f":"r1bq2k1/pp3ppp/8/8/8/1P3NP1/PQ2rPBP/R2R2K1 b - - 0 18","m":"e2b2 d1d8","r":499,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"6d820","f":"8/8/4R2B/1rk5/2p5/8/3R1PPP/6K1 w - - 2 42","m":"h6g7 b5b1 d2d1 b1d1 e6e1 d1e1","r":430,"t":"backRankMate endgame long mate mateIn3"},{"i":"6eaF0","f":"5rk1/p4ppp/2QBp3/1N3b2/1KP5/6P1/P1q4P/8 b - - 2 33","m":"f8c8 c6c8","r":502,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"6eg1g","f":"r5k1/p1p2Qpp/1p2p3/4q3/8/2P5/PP4PP/5R1K b - - 1 31","m":"g8h8 f7f8 a8f8 f1f8","r":588,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"6hmwf","f":"NQ4kr/pp3ppp/8/2p1p1q1/2P5/6P1/PPP2P1P/R4bK1 b - - 1 16","m":"g5d8 b8d8","r":570,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"6k6TA","f":"r1r3k1/2p2ppp/2Q5/8/1b6/8/2PNRRPP/7K w - - 0 25","m":"d2c4 a8a1 e2e1 a1e1 f2f1 e1f1","r":569,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"6kusR","f":"6k1/Rb3pp1/5b1p/3pN3/1P1P4/2r2N2/5PPP/6K1 w - - 0 25","m":"a7b7 c3c1 f3e1 c1e1","r":452,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6pmV6","f":"r2r2k1/p4ppp/1p1Rb3/2p5/8/2P2B1P/PKP3P1/3R4 b - - 3 20","m":"a8b8 d6d8 b8d8 d1d8","r":527,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6tcKV","f":"3r2k1/3rbppp/p7/1p2p3/1Pn1b3/P1N1P3/1BR1NPPP/R5K1 w - - 4 25","m":"c3e4 d7d1 a1d1 d8d1","r":504,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"6vJGs","f":"5r2/4R2p/1k6/1B1pP3/3P4/R1P5/6PP/7K w - - 7 41","m":"c3c4 f8f1","r":527,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6xihG","f":"1rR3k1/3Q1ppp/4p3/8/5P2/4b3/6PP/7K b - - 2 30","m":"b8c8 d7c8","r":598,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6zcnx","f":"4r1k1/7p/p5p1/1p2qpB1/P1b4Q/2P5/5PPP/2R3K1 w - - 2 32","m":"g5f6 e5e1 c1e1 e8e1","r":492,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"70KOp","f":"1r5k/2Qb2pp/Br1p4/8/3p4/P2P4/2P3PP/R6K w - - 0 28","m":"a6c4 b6b1 a1b1 b8b1","r":477,"t":"backRankMate endgame mate mateIn2 short"},{"i":"70OIr","f":"r1b2r1k/p4Qpp/5b2/5p2/p2P4/7P/1P3PP1/R1B1R1K1 b - - 0 21","m":"f8f7 e1e8 f7f8 e8f8","r":419,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"70yRx","f":"4r3/1R3pk1/7p/1p1p4/1P6/1BP5/6PP/1N5K w - - 0 31","m":"b1d2 e8e1 d2f1 e1f1","r":525,"t":"backRankMate endgame mate mateIn2 short"},{"i":"70zEk","f":"1r1N4/3bppkp/2p3p1/4P3/8/8/P4PPP/3R2K1 w - - 3 27","m":"d1d7 b8b1 d7d1 b1d1","r":517,"t":"backRankMate endgame mate mateIn2 short"},{"i":"72mwE","f":"3r4/p1p2kpp/5p2/2b1p3/P2P4/2P2P2/5PPP/R1BR2K1 w - - 1 20","m":"d4c5 d8d1","r":447,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"779gn","f":"3rR3/ppp2p1k/6p1/8/2Pq4/8/PPQ1nPPP/6K1 w - - 0 23","m":"e8e2 d4d1 c2d1 d8d1 e2e1 d1e1","r":582,"t":"backRankMate endgame long mate mateIn3"},{"i":"7GkLt","f":"r4Q1k/p1n3pr/2pNp3/1pP1P2p/3P2Pq/2P5/P2B3P/5RK1 b - - 3 26","m":"a8f8 f1f8","r":591,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7GtOn","f":"3r4/ppp1k1pp/1bn1pn2/1N2p1N1/1PP1P3/P7/5PPP/R1B3K1 w - - 1 17","m":"c4c5 d8d1","r":502,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7J4My","f":"3r3k/6p1/p6p/4q3/2P5/1P6/P4PPP/4R1K1 w - - 0 35","m":"e1e5 d8d1 e5e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"7UqF6","f":"5rk1/ppp3pb/2p4p/8/6B1/2NP4/PPP3PP/4Rq1K w - - 1 17","m":"e1f1 f8f1","r":495,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"7ZuhK","f":"3r2k1/pp3pp1/2p1pb1Q/2P5/3rB1R1/8/qP3PPP/2R3K1 w - - 1 28","m":"h6f6 d4d1 c1d1 d8d1","r":559,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7a3wr","f":"2br3k/6pp/8/1pBB1p2/p7/P7/1PP3PP/2K1R3 b - - 0 26","m":"d8d5 e1e8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"7aUgY","f":"5rk1/ppp2ppp/8/n3p3/1q2BP2/8/P5PP/R1BQ3K w - - 0 19","m":"d1c2 b4e1","r":536,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7avYX","f":"5r2/p5k1/1pp3p1/8/2b1p1p1/4N1Q1/P5PP/3r3K w - - 0 34","m":"e3d1 f8f1","r":544,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"7fTaa","f":"2kr3r/1ppqbppp/3p1n2/3P4/1Pp1P3/1Q3P1P/1P3P2/R1B1K2R b KQ - 0 15","m":"c4b3 a1a8","r":506,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7gIbN","f":"1r3nk1/p1p4p/5Q2/8/2pP4/2P5/P4PPP/4R1K1 w - - 3 25","m":"e1e7 b8b1 e7e1 b1e1","r":458,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7hZSh","f":"3rr1k1/pp5p/2p3p1/2n5/4p1B1/7P/PbP1RPPB/1R4K1 w - - 0 21","m":"b1b2 d8d1 e2e1 d1e1","r":474,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7k9AM","f":"4Q1k1/p3rppp/8/8/3N1q2/2P5/PP3PPP/4R1K1 b - - 0 24","m":"e7e8 e1e8","r":454,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"7up8p","f":"3r2k1/1p2bp1p/2p5/pn3B2/5B2/1PP5/P5PP/4R2K w - - 1 34","m":"e1e3 d8d1 e3e1 d1e1","r":459,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"7v66c","f":"3r2k1/p1p2ppp/2p2b1B/5n2/4Q3/6R1/PPP2PPP/R2q2K1 w - - 1 20","m":"a1d1 d8d1 e4e1 d1e1","r":423,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7x4Gm","f":"rr4k1/5ppp/Q3p3/3p4/3P4/4PPP1/2R4P/2R3K1 b - - 0 33","m":"a8a6 c2c8 b8c8 c1c8","r":513,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"7zNsO","f":"1k6/ppp4R/2n5/4p3/2B2p2/1PP5/P2r4/5K2 b - - 0 41","m":"d2a2 h7h8 c6d8 h8d8","r":459,"t":"backRankMate endgame mate mateIn2 short"},{"i":"820sE","f":"4r1k1/2p2ppp/3p4/Rp1P4/4R1n1/1P4P1/P1P3P1/6K1 b - - 0 29","m":"e8e4 a5a8 e4e8 a8e8","r":467,"t":"backRankMate endgame mate mateIn2 short"},{"i":"86kME","f":"7k/6pp/3rN3/8/1Pp5/8/6PP/R5K1 b - - 0 27","m":"d6e6 a1a8 e6e8 a8e8","r":414,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"8BvqI","f":"r4rk1/pp4pp/2p5/3p4/6b1/1BP5/P1PQ2PP/R1B1Rq1K w - - 5 19","m":"e1f1 f8f1","r":480,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8FNO1","f":"2r3k1/3R1ppp/2Q1p1q1/1p4b1/8/1P6/P4PPP/3R2K1 b - - 0 24","m":"c8c6 d7d8 g5d8 d1d8","r":514,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"8G7T7","f":"4r1k1/ppp1Qppb/2p4p/4P3/2P5/1P6/PB3PPP/3R2K1 b - - 0 25","m":"e8e7 d1d8 e7e8 d8e8","r":408,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8IJFw","f":"5r2/pkp2q1p/1pn3p1/8/4Q3/P2R1N2/1P4PP/4R2K w - - 2 35","m":"f3d4 f7f1 e1f1 f8f1","r":471,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"8KvNr","f":"1r4k1/pp2Rppp/8/2rp4/8/P2K1P2/6PP/4R3 b - - 3 27","m":"b8c8 e7e8 c8e8 e1e8","r":426,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"8MO9q","f":"r2r2k1/pp3ppp/n7/2pq4/8/1PP2N1P/1P2QPP1/R3R1K1 b - - 5 19","m":"d8e8 e2e8 a8e8 e1e8","r":494,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"8Nb06","f":"r5k1/5ppp/4p3/2Q5/1p2P3/qP6/6PP/2R3K1 b - - 0 29","m":"a3b3 c5c8 a8c8 c1c8","r":587,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"8Nk60","f":"4rQ1k/pb4pp/2q5/8/2P3n1/1PNr4/PB1P2PP/R4RK1 b - - 2 23","m":"e8f8 f1f8","r":509,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8QHaD","f":"r1b3k1/pp1n1ppp/4p3/4P3/2B1p3/1P6/P1r2PPP/3R1RK1 b - - 2 19","m":"d7e5 d1d8","r":444,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8SQXH","f":"1k1rr3/ppnb2pp/3q1p2/1P6/2B5/PR4Q1/2P3PP/RN5K w - - 3 27","m":"g3d6 e8e1 c4f1 e1f1","r":485,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"8YHfs","f":"5rk1/pp5p/4p3/3P4/3P4/NB2b3/PP4PP/R4r1K w - - 3 22","m":"a1f1 f8f1","r":457,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"8aypj","f":"4rk1r/p4ppp/2p5/3p4/2b2P2/PBN5/1PPR1bPP/R1B4K w - - 4 22","m":"d2f2 e8e1 f2f1 e1f1","r":548,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"8cLlf","f":"2rr1k1Q/2q1bpp1/p1np2n1/1p2p1P1/4P3/1N2BP2/PPP5/1K1R1B1R b - - 10 24","m":"g6h8 h1h8","r":527,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8d3bV","f":"4r2k/3b3B/3B1b1p/pp6/8/P1r5/R1P3PP/5R1K w - - 0 32","m":"f1f6 e8e1 f6f1 e1f1","r":451,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"8fTt9","f":"6k1/Bp3ppp/5b2/1P6/P1R5/5KPP/3r4/1n6 b - - 2 31","m":"d2a2 c4c8 f6d8 c8d8","r":439,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8jeV1","f":"5rk1/pp3pb1/6pp/8/3Np3/qQ2B3/5PPP/2rR2K1 w - - 0 25","m":"b3a3 c1d1","r":502,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"8kyuS","f":"2kr3r/ppp1R1Qp/8/8/8/8/P3nBPP/R2q3K w - - 1 22","m":"a1d1 d8d1 f2e1 d1e1","r":464,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"8pvFU","f":"2br2k1/5ppp/3Bp3/1pq5/2p5/P1b5/2P1PPBP/3Q1KR1 w - - 4 24","m":"d6c5 d8d1","r":495,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"8qsXm","f":"2Rn4/3PB2p/4r1p1/p2k4/2N5/1P3P2/6PP/7K w - - 5 40","m":"e7d8 e6e1","r":440,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"8rJtf","f":"2R1R2k/p5pp/5p2/8/3Bq3/7P/P5P1/6K1 b - - 0 36","m":"e4e8 c8e8","r":459,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"8sxer","f":"5r1k/6pp/8/8/5Q2/7P/6PK/3R4 b - - 0 46","m":"f8f4 d1d8 f4f8 d8f8","r":470,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"90ESG","f":"1r1r2k1/3PR3/p2R1bp1/2p5/8/8/P4PPP/6K1 w - - 0 33","m":"d6f6 b8b1 e7e1 b1e1","r":480,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"9ANh1","f":"1k6/ppp5/2n5/6p1/4n2r/1P2PR2/PN1QKNq1/1R6 b - - 0 30","m":"e4d2 f3f8 c6d8 f8d8","r":542,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9BaH9","f":"1kr4N/pp4p1/3p3p/3P4/2Q5/3P4/PP3PPP/6K1 w - - 0 26","m":"c4g4 c8c1 g4d1 c1d1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9CUuh","f":"6k1/p4ppp/2p5/3p4/P1b5/2P5/3r1rP1/1RK1N1R1 b - - 4 29","m":"f2e2 b1b8 e2e8 b8e8","r":590,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9DJQw","f":"r2r2k1/pQ3pbp/2B2np1/2p5/8/P3P2P/1P1q1PPB/R4RK1 w - - 1 18","m":"f1d1 d2d1 a1d1 d8d1","r":531,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9HsDk","f":"6k1/4Rppb/4p3/7p/3N4/4P1P1/Rr3PP1/6K1 b - - 0 25","m":"b2a2 e7e8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"9KdBc","f":"3r1b1r/2k2B2/2p4p/p1n3p1/2R2p2/P7/1PP3PP/R1B4K w - - 3 24","m":"b2b4 d8d1","r":412,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"9M23v","f":"1RrQ2kr/2n2ppp/q3p3/2B5/2p5/8/P4PPP/5RK1 b - - 3 25","m":"c8d8 b8d8 c7e8 d8e8","r":438,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9MTgO","f":"6k1/5ppp/8/8/PR2Pp2/1p3K2/2r3PP/8 b - - 3 31","m":"b3b2 b4b8 c2c8 b8c8","r":593,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"9SqS5","f":"6k1/1p2rppp/8/2npP1P1/r2N1P2/P7/7P/2RR3K b - - 4 27","m":"c5e4 c1c8 e7e8 c8e8","r":563,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9WPQA","f":"r4r1k/pp4pp/2p3n1/2P2R2/8/7R/PPQ3PP/5q1K w - - 0 25","m":"f5f1 f8f1","r":456,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"9Y1bA","f":"rn3rk1/pb4pp/1ppPp3/2P1P3/Q3B3/2N1R3/PP4PP/R4q1K w - - 3 23","m":"a1f1 f8f1","r":400,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"9cEJF","f":"3Q2k1/pp3prp/8/1q1p4/8/P1P5/5PPP/4R1K1 b - - 1 29","m":"b5e8 e1e8","r":449,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"9e8sC","f":"1k5r/pp3ppp/8/4Q3/8/5P2/PP3q1P/4R2K b - - 1 24","m":"b8a8 e5e8 h8e8 e1e8","r":561,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"9enZI","f":"r2qr1k1/2pp1ppp/p7/1p6/4Q3/1B6/PP3PPP/RNB3K1 w - - 1 15","m":"e4f3 e8e1","r":542,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"9hca4","f":"3r2k1/4nppp/2p3q1/1p6/1PP1Pp2/5B1P/3Q1PP1/R5K1 b - - 0 27","m":"d8d2 a1a8 e7c8 a8c8 d2d8 c8d8","r":590,"t":"backRankMate endgame long mate mateIn3"},{"i":"9llfg","f":"3r2k1/4Rppp/p7/2pn1P2/8/8/PP3PPP/3R2K1 b - - 0 22","m":"d5e7 d1d8","r":424,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"9mYBL","f":"r7/1b1r1pBk/2p1p3/pp6/8/5N2/P1P2PPP/Q5K1 w - - 1 20","m":"a1f6 d7d1 f3e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9qaVW","f":"3r2k1/5pp1/7p/p7/P3R2B/2N5/1P3PPP/3q2K1 w - - 0 30","m":"c3d1 d8d1 e4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9supA","f":"3r2k1/5ppp/r7/p2Rb3/2p5/PnN1B3/1P3PPP/4R1K1 b - - 0 26","m":"e5c3 d5d8","r":511,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"9vHsB","f":"3r2k1/2p2p1p/p1p3p1/4P1B1/4R3/q1P3Q1/2P2PPP/R5K1 w - - 0 19","m":"a1a3 d8d1 e4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9yZuW","f":"5k2/2R2pp1/7p/1N2p3/1P6/8/1r3PPP/6K1 w - - 1 33","m":"c7c4 b2b1 c4c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"A6LDR","f":"2r3k1/1p4pp/5b2/3B4/Pp1p4/1Pq5/2P1Q1PP/1K2R3 b - - 0 27","m":"g8h8 e2e8 c8e8 e1e8","r":530,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"A7hmw","f":"4r1k1/p4ppp/3Pq3/5b2/5B2/P1N2B2/1r1Q1PPP/2R3K1 w - - 0 26","m":"d2b2 e6e1 c1e1 e8e1","r":584,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"AA9Ea","f":"3k4/p5pp/p1P2p2/3P4/8/8/3r1PPP/2R3K1 w - - 1 33","m":"c1c5 d2d1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"AGAZo","f":"4r1k1/1p3ppp/p7/8/P5Q1/2P1q3/1P4PP/R5K1 w - - 0 23","m":"g1h1 e3e1 a1e1 e8e1","r":492,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"AHWYl","f":"5r1k/p5pp/2p5/3bp1Q1/2B5/N1P5/PP3rPP/3R3K w - - 1 23","m":"c4d5 f2f1 d1f1 f8f1","r":485,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AJ4XF","f":"1r4k1/b1p2ppp/B7/1p3P2/8/P1P1pKP1/1P5P/3R4 b - - 2 29","m":"b8b6 d1d8","r":490,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ALCS6","f":"1k5r/ppp2p2/2nb4/5B2/3P1B2/2P3P1/P3PP2/R3K3 w Q - 0 21","m":"f4d2 h8h1","r":482,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AQ0Hw","f":"7k/pp4pp/8/8/1P6/4p2P/2R3PK/5r2 b - - 1 35","m":"f1f2 c2c8 f2f8 c8f8","r":594,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AQPzO","f":"r4rk1/1Rp5/p3p3/3pb1q1/8/5NP1/P5PP/5R1K w - - 0 25","m":"f3g5 f8f1","r":533,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"ASt3U","f":"1r2b1k1/5pp1/4p2p/3pq3/1p5Q/1P4R1/2r2PPP/4R1K1 w - - 0 27","m":"e1e5 c2c1 e5e1 c1e1","r":537,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AVSeM","f":"r1r3k1/4Bppp/4p3/p3P3/P3bP1P/8/2PR4/2KR4 b - - 2 27","m":"c8c7 d2d8 a8d8 d1d8","r":573,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AZuOm","f":"8/5p1p/5kp1/p3pn2/8/1B6/PrP2PPP/3R2K1 w - - 2 26","m":"d1d7 b2b1 d7d1 b1d1","r":463,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Ai38p","f":"3r2k1/5ppp/2p1p3/R7/P1p5/2P4P/1P4P1/2B2b1K b - - 0 31","m":"d8d1 a5a8 d1d8 a8d8","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AkNgK","f":"1k6/p1p5/1p5p/3P4/2P5/qP6/P5PP/5Q1K w - - 1 29","m":"f1e2 a3c1 e2d1 c1d1","r":418,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"AkrBx","f":"4r2k/4r1pp/p2q1b2/3p4/NPpP4/P6P/3Q1RP1/5RK1 b - - 3 32","m":"f6h4 f2f8 e8f8 f1f8","r":551,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ArHzF","f":"2kr3r/1pp4p/p1p2p2/5q2/8/8/PP4PP/RN3R1K w - - 0 18","m":"f1f5 d8d1 f5f1 d1f1","r":479,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Argru","f":"rnb2r1k/pp3Qpp/2p5/2P2P2/7n/6P1/PP5P/4RR1K b - - 0 22","m":"f8f7 e1e8 f7f8 e8f8","r":477,"t":"backRankMate fork master mate mateIn2 middlegame short"},{"i":"AsxAy","f":"3r2k1/pp3ppp/2n2n2/6Q1/8/1P3P2/P2BR1PP/2q4K w - - 1 27","m":"d2c1 d8d1 e2e1 d1e1","r":446,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AtuKT","f":"4r1k1/ppp2ppp/8/8/4N3/8/PP4PP/3R3K b - - 1 19","m":"e8e4 d1d8 e4e8 d8e8","r":421,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AvHDe","f":"2r5/1Q3pk1/5bpp/4n3/3p4/P3P3/1P1R1PPP/2R3K1 w - - 0 32","m":"e3d4 c8c1 d2d1 c1d1","r":529,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"AvP84","f":"6k1/ppp5/6p1/2brPnB1/8/2P2b2/PP4PP/RN3R1K w - - 0 21","m":"f1f3 d5d1 f3f1 d1f1","r":479,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"AwMKV","f":"r3r1k1/p2p1ppp/bp3n2/6Q1/8/2PP3N/PP3PPP/n1BRq1K1 w - - 1 18","m":"d1e1 e8e1","r":443,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"B5FUc","f":"4r1k1/5ppp/2Q5/3pq3/8/1PP5/5PPP/2R3K1 w - - 2 27","m":"c3c4 e5e1 c1e1 e8e1","r":531,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"B76jC","f":"1k2r3/pp3ppp/5n2/1P2r3/8/5Q2/P4PPP/R1q3K1 w - - 0 24","m":"a1c1 e5e1 c1e1 e8e1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BGNMD","f":"1r2r2k/2pbqppp/p2p2n1/1p1P4/2P1B3/P4R2/R1QB1PPP/6K1 w - - 2 26","m":"e4g6 e7e1 d2e1 e8e1","r":523,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"BGhKk","f":"5rk1/p2r3p/2p1qppQ/8/8/5P2/PP3P1P/K3R3 w - - 0 27","m":"e1e6 d7d1 h6c1 d1c1","r":408,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"BK2dr","f":"5rk1/R4ppp/4p3/1N2r3/2q5/8/1P4PP/5Q1K w - - 0 27","m":"f1c4 e5e1 c4f1 e1f1","r":467,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BQisa","f":"2r3k1/p4ppp/2N1p3/3p4/8/P3r3/1R4PP/6K1 b - - 1 25","m":"c8c6 b2b8 c6c8 b8c8","r":411,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"BSG1K","f":"2r4k/6pp/8/8/4Bp2/4r1nP/2R1p1P1/4R1K1 b - - 2 40","m":"g3e4 c2c8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"BSKbj","f":"4rk2/p1R5/7p/3p4/1P2r3/P7/5PPP/2R3K1 w - - 3 34","m":"c7a7 e4e1 c1e1 e8e1","r":461,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"BSUcA","f":"6k1/5ppp/bp2q3/2Q1P3/4P3/r1N2N2/6PP/3R2K1 b - - 0 28","m":"b6c5 d1d8 e6e8 d8e8","r":544,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BWJna","f":"2r3k1/5ppp/pp1qp3/4R3/1Q1P4/8/P4PPP/6K1 w - - 0 29","m":"b4d6 c8c1 e5e1 c1e1","r":565,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"BaN01","f":"4r1k1/ppp2ppp/2n5/3q4/8/5Q2/PP1n1PPP/RN4K1 w - - 0 22","m":"f3d5 e8e1","r":507,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Bbr6K","f":"6k1/2q2pp1/p3p2p/PpP1P2P/1Bp2PP1/3b1QK1/8/8 b - - 4 42","m":"d3h7 f3a8 c7b8 a8b8","r":454,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Bd1hp","f":"2r3k1/5ppp/p3p3/1pP5/1Pp1bq2/P4N1P/3R2P1/3Q1K2 b - - 1 30","m":"e4f3 d2d8 c8d8 d1d8","r":446,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Bmexa","f":"3Q1r1k/p5pp/1p5q/4R3/3P4/8/PP3PPP/4R1K1 b - - 0 25","m":"f8d8 e5e8 d8e8 e1e8","r":401,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"BnxII","f":"4r1k1/p1p2ppp/8/1RN5/3b4/8/P1P2PPP/5K2 b - - 0 22","m":"e8e5 b5b8 e5e8 b8e8","r":459,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BnzxX","f":"4r1k1/pp3ppp/2n5/2P2n2/8/P4b2/1B1RBPPP/6K1 w - - 0 19","m":"e2f3 e8e1","r":422,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"BqZfc","f":"3r4/1R3p1k/p2N3p/4n1p1/4P3/8/P4PPP/6K1 w - - 1 24","m":"d6f7 d8d1","r":590,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"BryWO","f":"1b2r1k1/1N5p/p1n3p1/P2r1p2/2p2P2/2P1B3/1P3PRP/R5K1 w - - 1 26","m":"a1a4 d5d1","r":542,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"BtdY4","f":"r5k1/R4ppp/4p3/8/8/6P1/6KP/2R5 b - - 0 32","m":"a8a7 c1c8","r":438,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"Bv9GQ","f":"6k1/5ppp/8/1q2nP2/8/8/PPP3PP/2KR4 b - - 1 24","m":"e5c4 d1d8 b5e8 d8e8","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BvuCm","f":"6k1/5ppp/5r2/1p2P1r1/8/1PP2P2/1n1R1KP1/5B2 b - - 0 51","m":"g5e5 d2d8 e5e8 d8e8","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BwvQF","f":"6k1/p5pp/2P1p3/p3N3/4pB1P/P3P3/1P3qPR/4r1RK w - - 7 34","m":"g1e1 f2e1","r":570,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"BxRAM","f":"4r2k/pr4pp/8/3p4/3n4/8/P2R2PP/1R5K w - - 0 29","m":"b1b7 e8e1","r":559,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"BxYYk","f":"3r3k/p2r1p1p/p1p1b3/2P5/3N1R2/4P3/P1P2PPP/R5K1 w - - 1 21","m":"d4c6 d7d1 a1d1 d8d1","r":436,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ByfFy","f":"2r3k1/5ppp/1p1p4/1P2p3/2Pp3P/5K2/R4P1P/8 b - - 2 25","m":"c8c4 a2a8 c4c8 a8c8","r":442,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"BzBIy","f":"r3Q2k/6pp/p2B4/1p1P3q/6n1/4R3/2P2P1P/4R1K1 b - - 5 25","m":"a8e8 e3e8 h5e8 e1e8","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"C0GwH","f":"3rQ2k/3n2pp/7b/1p6/q7/B1PP3P/1P4P1/1K1RR3 b - - 2 32","m":"d8e8 e1e8 d7f8 e8f8","r":483,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"C1GNm","f":"4r3/p4R2/kp1R3p/6p1/8/6B1/PP2r1PP/7K w - - 5 30","m":"d6d7 e2e1 g3e1 e8e1 f7f1 e1f1","r":584,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"C1gDh","f":"1Qb3k1/5ppp/1q2p3/pp6/4N3/P4N2/1bP3PP/3R3K b - - 0 24","m":"b6b8 d1d8","r":537,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"C4QHS","f":"r1n3k1/1R1q1ppp/p1p1p3/Q1Pp4/3P4/4P3/P2NBPPP/6K1 b - - 0 22","m":"d7b7 a5d8","r":520,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"C5KFT","f":"2r4k/4R2p/3p4/3B1p2/1P6/R7/5PPP/6K1 w - - 2 30","m":"a3a7 c8c1 e7e1 c1e1","r":426,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"C5tkd","f":"r2q1rk1/pQ2n1pp/1bb1p3/5p2/3N4/2P1B3/PP3PPP/RN1R2K1 w - - 1 17","m":"d4c6 d8d1","r":566,"t":"backRankMate hangingPiece mate mateIn1 oneMove opening"},{"i":"C7LB7","f":"4r3/R6B/np3p2/2pk4/8/2P5/P4PPP/6K1 w - - 1 29","m":"a7a6 e8e1","r":496,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"C8gVv","f":"6k1/5ppp/4pn2/2R5/1Pbr1N2/r4P1P/6P1/4R1K1 b - - 1 29","m":"d4f4 c5c8 f6e8 c8e8","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CAxfF","f":"2r3k1/pbQ2ppp/1p2p3/8/B7/8/Pq3PPP/3R2K1 b - - 1 25","m":"c8c7 d1d8","r":472,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CCQg2","f":"6k1/p1p2ppp/8/8/q1P5/3R3P/1P1bn3/1K6 b - - 3 30","m":"d2c3 d3d8 a4e8 d8e8","r":437,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CJbiE","f":"r2Br1k1/pp3ppp/2p5/3p4/1P2n3/P1Q5/2P2PPP/4RRK1 b - - 0 18","m":"e4c3 e1e8","r":484,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"CK6q2","f":"3rr1k1/p4pp1/7P/8/7P/2Q5/PPP2P2/1K1q3R w - - 1 27","m":"h1d1 d8d1","r":585,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"CMPbr","f":"1r6/6pk/4QpNp/3p4/8/8/5PPP/6K1 w - - 1 36","m":"g6f4 b8b1 e6e1 b1e1","r":518,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CNVcI","f":"3rQ1k1/1b3ppp/p5r1/1p1P3q/8/PBN5/1P3P1P/3RR2K b - - 7 28","m":"d8e8 e1e8","r":478,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"CUlBH","f":"1k4N1/ppp3p1/r4p2/8/3R3p/8/PPPB1q2/1K2R3 b - - 0 30","m":"f2d4 e1e8 d4d8 e8d8","r":463,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CY9qt","f":"4k3/4p3/4N2p/1p1pb1p1/p2r4/8/PP3PPP/4R1K1 w - - 0 30","m":"e1e5 d4d1 e5e1 d1e1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CbUMO","f":"3r1k2/Q7/5p2/4p1p1/1P5p/b2q4/5PPB/1R2R1K1 w - - 1 36","m":"e1d1 d3d1 b1d1 d8d1","r":572,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"CgdtU","f":"2r3k1/1b3ppp/p3p3/8/4P3/2N3PP/Pp3PB1/3R2K1 b - - 1 29","m":"c8c3 d1d8","r":491,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"CjUqz","f":"r3r1k1/pp3ppp/2p2n2/8/8/7Q/PPPq1PPR/1K1R4 w - - 6 22","m":"d1d2 e8e1 d2d1 e1d1","r":544,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CmM1E","f":"2kr1b1r/1pp2ppp/2b1p3/1P6/2P5/4B3/4KP1P/R5R1 b - - 0 18","m":"c6d7 a1a8","r":550,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Cnw61","f":"r5k1/1p4pp/p1p1Q3/8/8/2Pq2P1/PP4KP/4R3 b - - 1 23","m":"g8h8 e6e8 a8e8 e1e8","r":542,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"CrOsC","f":"3q1rk1/1b3ppp/3p1b2/2pP4/1pP5/5B2/rP2QPPP/1RB1R1K1 b - - 2 21","m":"f8e8 e2e8 d8e8 e1e8","r":412,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"CrVfY","f":"r4r1k/2pp2p1/p6p/1p5Q/1P6/P7/B5NP/1R3q1K w - - 1 26","m":"b1f1 f8f1","r":491,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CsSgD","f":"7k/pp2q1pp/4B3/3Pp3/3b1Q2/1P1P4/P6P/2R4K b - - 0 30","m":"e5f4 c1c8 e7d8 c8d8","r":550,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Cuviu","f":"1r3rk1/ppp3p1/2npp2p/8/Q7/6R1/P2N2PP/1q5K w - - 0 23","m":"d2b1 f8f1","r":429,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Cwa9l","f":"r1b4k/pp4pp/1bp5/3pq3/QPn2r2/P5N1/B1P2PPP/4RRK1 b - - 1 20","m":"e5g5 e1e8 f4f8 e8f8","r":468,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Czo7z","f":"1k1Q2r1/ppp2p2/4p3/4q3/6B1/P6P/1PP2PP1/3R2K1 b - - 3 30","m":"g8d8 d1d8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"DF6E6","f":"r1Q3k1/1pR2ppp/3p4/2nq4/p7/5N1P/5PP1/6K1 b - - 1 24","m":"a8c8 c7c8","r":525,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"DH55P","f":"2Q2rk1/1p3ppp/p1p5/8/3R4/1q2P1PP/bP3PB1/3R2K1 b - - 0 25","m":"f8c8 d4d8 c8d8 d1d8","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DHAYM","f":"5rk1/1p4pp/p2pp3/8/4P3/N2Pb3/PPR3PP/6K1 w - - 2 24","m":"g1h1 f8f1","r":457,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"DLvv0","f":"1r1r2k1/1b3ppp/p2Q2N1/1p6/8/7P/PP2R1P1/4R1K1 b - - 0 30","m":"d8d6 e2e8 b8e8 e1e8","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DN31r","f":"2r3k1/4q3/p4p2/1p4pp/3Q4/3P3P/PP3PPB/4R1K1 w - - 1 36","m":"e1e7 c8c1 e7e1 c1e1","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DRc29","f":"1r4k1/p1p2ppp/7r/3R4/2P2q2/7B/P4PP1/3Q2K1 b - - 6 27","m":"h6b6 d5d8 b8d8 d1d8","r":475,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DYtFE","f":"Q4r1k/5ppp/8/2pR4/2B5/1P6/P1P4q/1K1R4 b - - 0 24","m":"f8a8 d5d8 a8d8 d1d8","r":447,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Dci60","f":"r4r1k/1pp1b1pp/p1n5/4p3/PP2Q3/2PP4/6PP/RNB1Rq1K w - - 2 18","m":"e1f1 f8f1","r":490,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"DdYv0","f":"R2b1k2/7R/3r4/1p2p2N/6p1/2p5/5PPP/6K1 w - - 5 36","m":"h7c7 d6d1","r":440,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"Dg69M","f":"3r3k/p5pp/1p6/8/2R5/1K6/1P3P2/8 b - - 0 41","m":"d8d2 c4c8 d2d8 c8d8","r":505,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"DgOgK","f":"6k1/5pp1/5b1p/4pN2/qRp1P3/P7/5PPP/2Qr2K1 w - - 2 33","m":"c1d1 a4d1","r":432,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"DgiBS","f":"r4rk1/6pp/bn2p3/p2p2B1/1p1Q3N/1P2R3/1PP3PP/R4q1K w - - 2 25","m":"a1f1 f8f1","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"DhWaD","f":"r5k1/pp1rRppp/2p5/3p4/8/1BP4b/PP3PP1/4R1K1 b - - 2 22","m":"h3f5 e7e8 a8e8 e1e8","r":496,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DhmfX","f":"r2qr1k1/p2nBppp/b1p5/3p1Q2/3p4/5P2/PPP3PP/RN2R2K w - - 3 18","m":"e7d8 e8e1","r":512,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Dj8nz","f":"6k1/5ppp/8/1Rp5/p2bP3/n5P1/6KP/5r2 b - - 1 40","m":"f1f3 b5b8","r":517,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"DpLa9","f":"4k3/p1R2R1p/1p4p1/1P2pb2/8/8/r4PPP/6K1 w - - 1 29","m":"f7h7 a2a1 c7c1 a1c1","r":585,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Dt2Oe","f":"2kr4/ppp2ppp/8/1NNr1b2/1P3B2/8/P4PPP/R5K1 w - - 1 19","m":"f4c7 d5d1 a1d1 d8d1","r":540,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"DusX1","f":"3r2k1/1p3pp1/p3p2p/3r4/8/1P2P3/Pq2QPPP/2RR2K1 w - - 4 22","m":"e2b2 d5d1 c1d1 d8d1","r":420,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"DuulX","f":"rnr3k1/1p3ppp/p3p3/3n1b2/3P1B2/1P3NP1/4PPBP/2R2RK1 b - - 1 15","m":"d5f4 c1c8","r":582,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"DvYiv","f":"3rr1k1/p4p1p/5Qp1/qp6/8/1PPp4/P2P1PPP/R1B1R1K1 w - - 1 21","m":"a2a4 e8e1","r":517,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Dw7dD","f":"r1Q3k1/5ppp/4p3/3pP3/3P4/PP6/3q1PPP/2R3K1 b - - 6 29","m":"a8c8 c1c8","r":466,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"E4f0R","f":"3r1k2/5pp1/p2r4/4pN2/8/8/PPP5/1K1qRQ2 w - - 6 39","m":"e1d1 d6d1 f1d1 d8d1","r":428,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"E5weD","f":"r2rR1k1/ppp2ppp/8/3P4/8/2P3Pq/P3QP1P/4R1K1 b - - 1 24","m":"d8e8 e2e8 a8e8 e1e8","r":450,"t":"backRankMate endgame mate mateIn2 short"},{"i":"EKPxp","f":"7k/pp4pp/8/5q2/4b3/4K3/P1p4P/R4R2 b - - 1 29","m":"f5d7 f1f8","r":543,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ENb0A","f":"3r2k1/p1p2ppp/8/2P5/8/3N4/5K1P/1R6 b - - 0 28","m":"d8d3 b1b8 d3d8 b8d8","r":565,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"EOcwt","f":"r1b3k1/1p3ppp/p4n2/2B5/r3pN2/8/P2b1PPP/3R1RK1 b - - 3 21","m":"d2f4 d1d8 f6e8 d8e8","r":443,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ER93Y","f":"r1bk1r2/ppp3p1/3pn1qp/3P4/8/3B4/PP4PP/R1BQb2K w - - 0 18","m":"d3g6 f8f1","r":575,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ESSUa","f":"2b4k/p5pp/2R5/3r4/8/3N4/PP4KP/8 b - - 0 28","m":"d5d3 c6c8 d3d8 c8d8","r":435,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"ETKIZ","f":"1k2r2r/p5R1/1p2B2p/2pn4/P7/3P4/1PP2PPP/4R1K1 w - - 1 26","m":"e6d5 e8e1","r":450,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"EVYlK","f":"3r4/6pk/p6p/2R5/P7/6N1/1P2nPPP/6K1 w - - 1 33","m":"g3e2 d8d1","r":467,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"EXG4R","f":"2r3k1/pp3ppp/3q4/8/4P3/8/PP3PPP/3R2K1 w - - 0 25","m":"d1d6 c8c1 d6d1 c1d1","r":521,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"EdaNm","f":"3qr1k1/r3bppp/2p2B2/p1p1Q3/3p4/3P4/PPP2PPP/RN2R1K1 b - - 0 16","m":"e7f6 e5e8 d8e8 e1e8","r":543,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"EeIXd","f":"4rQ1k/2qb2pp/8/p2P4/1p2P1PP/3N3K/PP3R2/2r5 b - - 2 36","m":"e8f8 f2f8","r":461,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"EeiKT","f":"2q1R2k/3r1Qpp/pp6/5p2/8/8/PP3PPP/6K1 b - - 1 26","m":"c8e8 f7e8","r":517,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"EhG1q","f":"6k1/6p1/2R2p1p/3p4/rp1P4/4B3/5PPP/6K1 w - - 0 30","m":"c6b6 a4a1 e3c1 a1c1","r":588,"t":"backRankMate endgame mate mateIn2 short"},{"i":"EjwhW","f":"r3r1k1/p1p2ppp/2p5/5q2/2PPp3/5P2/PP2Q1PP/R3R1K1 b - - 0 17","m":"e4f3 e2e8 a8e8 e1e8","r":565,"t":"backRankMate endgame mate mateIn2 short"},{"i":"EkhRT","f":"r1b2rk1/1pp3pp/p1p5/3NR3/2Q5/8/PPP3PP/R1B2q1K w - - 2 16","m":"c4f1 f8f1","r":400,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"EnO40","f":"3r2k1/5pbp/6p1/8/1Pq5/8/5RPP/2R4K w - - 0 33","m":"c1c4 d8d1 f2f1 d1f1","r":531,"t":"backRankMate endgame mate mateIn2 short"},{"i":"EonkT","f":"2r3k1/5ppp/pR6/2r1B3/8/8/P4PPP/1R4K1 w - - 0 30","m":"e5d6 c5c1 b1c1 c8c1","r":460,"t":"backRankMate endgame mate mateIn2 short"},{"i":"EqzDE","f":"6k1/p1p2ppp/3p3q/8/8/5KP1/4r2P/1R6 b - - 5 42","m":"h6h2 b1b8 e2e8 b8e8","r":598,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"ErpJo","f":"2r5/R4ppp/4pk2/8/2r1P3/P7/5PPP/5RK1 w - - 1 24","m":"f1b1 c4c1 b1c1 c8c1","r":443,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"EuRl6","f":"r2R2k1/5ppp/p7/1p2p3/P7/3RB2P/1q3PP1/6K1 b - - 1 25","m":"a8d8 d3d8","r":459,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"EuVn4","f":"k1QrRb2/pp4pp/1qp5/8/3PpB2/8/PPP2PPP/R4BK1 b - - 6 23","m":"d8c8 e8c8","r":554,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Ex3Mr","f":"r1bq2k1/ppp2rpp/2N5/3p4/4p3/2P5/PP1P2PP/RNBQb2K w - - 0 13","m":"c6d8 f7f1","r":498,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"EzOVh","f":"r3r3/pp3Q2/1kp2Bp1/8/2P5/1P6/P5PP/3Rq2K w - - 2 26","m":"d1e1 e8e1","r":503,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"F1tyn","f":"2rQ2k1/pb2nppp/1p6/5q2/5P2/6P1/P6P/3RR1K1 b - - 1 27","m":"c8d8 d1d8","r":484,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"F2sia","f":"2r2k2/3Rppb1/7p/1B6/Pp3PP1/2p5/P1K2P2/8 b - - 0 31","m":"c8c5 d7d8","r":441,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"F8kJx","f":"2k4r/1p3p2/p1pr1P1p/5b2/8/P3R3/1P3PPP/R1B3K1 w - - 3 23","m":"b2b4 d6d1 e3e1 d1e1","r":467,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FCHFc","f":"r5k1/2q1bppp/p1np1P2/8/1p3P2/8/PPP1Q2P/1K1RR3 b - - 0 24","m":"e7f6 e2e8 a8e8 e1e8","r":475,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"FDoRo","f":"5r1k/3B2pp/1p1p4/1P2p3/3n4/7P/5PP1/2R2K2 b - - 2 33","m":"f8f7 c1c8 f7f8 c8f8","r":471,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FFd7E","f":"r4Q1k/pp4pp/2b1p3/3q4/5R2/7P/P5P1/4R2K b - - 7 30","m":"a8f8 f4f8","r":557,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"FIk5U","f":"1k1Q2r1/ppp4p/2b5/4qp1p/8/2N5/PPP2PPP/3R1RK1 b - - 5 26","m":"g8d8 d1d8","r":406,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"FKpNN","f":"1r1r2k1/5ppp/2p1p3/p1PqP3/P7/8/2RQ1PPP/3R2K1 b - - 0 23","m":"d5e5 d2d8 b8d8 d1d8","r":445,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FQlVe","f":"rnb2rk1/pp4pp/2p1p3/3pP3/2PPp3/2N1P1RQ/PP1B2PP/4Rq1K w - - 8 19","m":"e1f1 f8f1","r":430,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"FTA2l","f":"3n2k1/2q3p1/p6p/4p3/8/Q4bB1/1P3PPP/6K1 w - - 0 26","m":"a3f3 c7c1 f3d1 c1d1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FWEgX","f":"3r2k1/5ppb/4p2p/1R6/1PBQ4/7P/5PP1/6K1 b - - 0 38","m":"d8d4 b5b8 d4d8 b8d8","r":535,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FXHGl","f":"6k1/p5pp/4r3/5Q2/8/8/5PPP/R3q1K1 w - - 1 39","m":"a1e1 e6e1","r":433,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"FbceA","f":"r6k/pp4p1/2b2r1p/7Q/5q2/1BN5/PPP1R1PP/R6K w - - 0 26","m":"b3d5 f4f1 a1f1 f6f1","r":561,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"FceEV","f":"4r1k1/1pp1rppp/3p4/P7/1P1q4/4P3/2R2PPP/2R3K1 w - - 0 26","m":"e3d4 e7e1 c1e1 e8e1","r":463,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Fh4yW","f":"1rQ3k1/p4ppp/4p3/8/3P3P/1r2P1P1/qP2RP2/2R1K3 b - - 7 28","m":"b8c8 c1c8","r":489,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"FhMwC","f":"4r1k1/p3Bppp/1pp5/4Pb2/5P2/2N5/PP3KPP/3R4 b - - 0 24","m":"e8e7 d1d8 e7e8 d8e8","r":447,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FiqTT","f":"r5k1/7p/3b2p1/3Pp3/1pP1Pp2/8/4Q1PP/q4R1K w - - 0 29","m":"f1a1 a8a1 e2d1 a1d1","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Fj352","f":"3qR2k/2p2Qpp/2Pp2r1/1p1B4/1P6/6Pb/PnP2P1P/R5K1 b - - 0 19","m":"d8e8 f7e8","r":513,"t":"backRankMate hangingPiece master mate mateIn1 middlegame oneMove"},{"i":"FkESJ","f":"2kr4/ppp3pp/2n1p3/8/2P5/5NB1/Pb2QPPP/6K1 w - - 0 24","m":"e2b2 d8d1 f3e1 d1e1","r":401,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Fmxtx","f":"4rk1r/ppp2ppp/2p5/8/5q2/2N3Q1/PPPP2PP/R1B4K w - - 9 17","m":"g3f4 e8e1 f4f1 e1f1","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FycFJ","f":"r3r1k1/pp3ppp/2p5/4Rb2/2P2B2/1P6/P4PPP/4R1K1 b - - 0 21","m":"f5g6 e5e8 a8e8 e1e8","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FzlHZ","f":"8/pp1r1k1p/5Np1/8/8/nP6/P4PPP/Q2q2K1 w - - 3 37","m":"a1d1 d7d1","r":442,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"G1NVF","f":"8/1R4pk/1p5p/5p2/8/P7/1r3PPP/3R2K1 w - - 2 28","m":"d1d7 b2b1 d7d1 b1d1","r":473,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"G4x9e","f":"3q1r2/1p6/2p3kp/p7/Q4pp1/2P5/P1Pr1PPP/R4RK1 w - - 0 28","m":"f1d1 d2d1 a1d1 d8d1","r":438,"t":"backRankMate endgame mate mateIn2 short"},{"i":"G5kWb","f":"2r2r1k/pp3q1b/2p4Q/3p1B1R/3P4/2P5/PP3PPP/6K1 w - - 1 27","m":"f5h7 f7f2 g1h1 f2e1","r":594,"t":"backRankMate endgame mate mateIn2 short"},{"i":"G7l88","f":"6k1/pp3ppp/4p3/3N4/Pn6/1R2PN2/5PPP/3r2K1 w - - 1 21","m":"f3e1 d1e1","r":408,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"GFl9g","f":"r5k1/2p2ppp/1p1p1q2/p2P4/3n4/P3Q1B1/1P3PPP/4R1K1 b - - 4 26","m":"d4c2 e3e8 a8e8 e1e8","r":415,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"GIO1N","f":"rnb2r1k/ppppR1pp/8/8/1nB5/8/2PK1PPP/8 b - - 3 23","m":"f8f4 e7e8 f4f8 e8f8","r":572,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"GJrTr","f":"r2r2k1/pp3ppp/1q3b2/8/1P1pQB2/P7/5PPP/3RR1K1 b - - 2 19","m":"d8e8 e4e8 a8e8 e1e8","r":474,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"GL2OO","f":"r1r3k1/pp1n1R2/7p/4N1p1/3P4/Q7/PPq2PPP/R5K1 w - - 1 25","m":"f7d7 c2c1 a1c1 c8c1","r":586,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"GLCnp","f":"r4rk1/pp4pp/3bN3/3Qn3/8/3B4/PP4PP/R1B2q1K w - - 2 19","m":"d3f1 f8f1","r":446,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"GQEfc","f":"r4k2/2QP1pp1/4bb1p/8/8/3B4/2P3PP/4R2K w - - 1 35","m":"e1e6 a8a1 e6e1 a1e1 d3f1 e1f1","r":489,"t":"backRankMate endgame long mate mateIn3"},{"i":"GQMkh","f":"5r1k/5ppp/rp2p3/8/1R1P4/4P3/1P3PPP/2R3K1 w - - 2 30","m":"c1c6 a6a1 c6c1 a1c1","r":507,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"GVaUT","f":"r5k1/p3Rppp/4b3/3p1P2/1B6/Pr6/6PP/4R1K1 b - - 0 26","m":"e6f5 e7e8 a8e8 e1e8","r":592,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GWFNP","f":"2kr4/8/4q3/8/1P6/P7/5PPP/4R1K1 w - - 0 36","m":"e1e6 d8d1 e6e1 d1e1","r":448,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"GWRt6","f":"r5k1/p5p1/2p2q1p/2B5/1PP2p2/3P4/P4PPP/R2Q2K1 w - - 0 22","m":"d1f3 f6a1 f3d1 a1d1","r":472,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"GaZnv","f":"6k1/2pr1ppp/3R4/p6r/8/4BP1P/PR3PK1/8 b - - 0 26","m":"c7d6 b2b8 d7d8 b8d8","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Gf7jU","f":"2b2rk1/rp4p1/p1p1p2p/4N3/3PQ3/P1R5/6PP/4Rq1K w - - 2 25","m":"e1f1 f8f1","r":510,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Gg0ys","f":"r4r1k/ppQ1R2n/2p5/3p4/8/3P4/P2N2PP/5q1K w - - 2 24","m":"d2f1 f8f1","r":559,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Gh1qr","f":"4rr1k/ppq3pp/2p2np1/3p4/3P2Q1/2N2R1P/PPP3P1/5RK1 b - - 6 20","m":"f6g4 f3f8 e8f8 f1f8","r":560,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Gkjv6","f":"5rk1/p6p/b1pp1rp1/8/3Np3/6BQ/PP4PP/1R1q3K w - - 0 30","m":"b1d1 f6f1 d1f1 f8f1","r":495,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"GkvAZ","f":"6k1/2q3pp/p3p1n1/1p1pP1N1/1P6/P5P1/4Q1PP/7K w - - 3 27","m":"g5e6 c7c1 e2d1 c1d1","r":402,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Grkf0","f":"1k5r/ppp2p1q/8/1P2p3/3R1p2/5PP1/P3Q2p/4R2K b - - 0 26","m":"e5d4 e2e8 h8e8 e1e8","r":417,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"Gu6oz","f":"r5k1/ppp1r1pp/2b5/5R2/2B5/P6P/5RP1/6K1 b - - 8 24","m":"g8h8 f5f8 a8f8 f2f8","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GwNDK","f":"4r1k1/pb3ppp/1p6/8/5B2/5P1P/PPrR2P1/1R4K1 b - - 2 25","m":"e8e2 d2d8 e2e8 d8e8","r":580,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GxHhG","f":"6k1/5pp1/1p5p/1r2p3/2n5/P3P3/5PPP/2R3K1 w - - 0 33","m":"c1c4 b5b1 c4c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"GxX6W","f":"2r3k1/5pbp/6p1/3R1p2/P2p4/P3PN2/5PPP/R1r3K1 w - - 1 30","m":"a1c1 c8c1 f3e1 c1e1","r":441,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GxcTy","f":"1r1rQ1k1/5ppp/3p4/p1pq4/4R2P/1P3P2/P5P1/1K2R3 b - - 1 26","m":"d8e8 e4e8 b8e8 e1e8","r":412,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"GzmC9","f":"3r2k1/1p3ppp/p3p3/8/3R4/1PR2P1P/1P3P2/6K1 b - - 0 26","m":"d8d4 c3c8 d4d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"H0jSs","f":"6k1/5pp1/b1r1p2p/8/R1NP4/1P6/5PPP/6K1 w - - 1 36","m":"c4a5 c6c1","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"H0otd","f":"r1bk1Q1r/1pppn2p/2n3p1/1pq1p3/2B1P3/2PP3N/PP4PP/R1BK1R2 b - - 1 14","m":"h8f8 f1f8","r":486,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"H1mxH","f":"4r1k1/1pp2p2/p3r2p/6p1/6R1/7P/PPP2Q2/1K2q1R1 w - - 3 27","m":"g1e1 e6e1 f2e1 e8e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"H2Rzc","f":"5k2/1qn1ppb1/3p3r/1p5p/p2PP3/P4P1p/1PQNN1bB/1KR5 b - - 2 30","m":"c7e6 c2c8 b7c8 c1c8 e6d8 c8d8","r":546,"t":"backRankMate long master mate mateIn3 middlegame"},{"i":"H5uHK","f":"r4Q1k/p5pp/8/1q1p2r1/8/1P6/P4RPP/3N2K1 b - - 1 25","m":"a8f8 f2f8","r":431,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"H87ok","f":"1r3k1r/p3npbp/bq4p1/1BB5/5P2/2N5/PPPQ2PP/2KR3R b - - 0 15","m":"b6c5 d2d8 b8d8 d1d8","r":592,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"H96z1","f":"6k1/1r3ppp/8/3p4/Rp1P2P1/4B2P/2P1nP2/5K2 b - - 0 44","m":"e2c3 a4a8 b7b8 a8b8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HGdZi","f":"r3r1k1/pp2q1pp/2p2p2/3p1b2/3P1B2/2PB4/PPQ2PPP/R5K1 w - - 0 21","m":"d3f5 e7e1 a1e1 e8e1","r":533,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"HHumC","f":"2r3k1/5p1p/4pPp1/1N6/rp1P4/1Q6/5PPP/6K1 w - - 0 28","m":"b3a4 c8c1 a4d1 c1d1","r":498,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HJaSe","f":"6k1/pp3pp1/6bp/3R4/8/r2B4/2P2PPP/6K1 w - - 0 25","m":"d3g6 a3a1 d5d1 a1d1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HMNwt","f":"8/p4B1p/4R1p1/1kB5/3P4/P7/1r3PPP/6K1 w - - 4 32","m":"e6e7 b2b1 e7e1 b1e1","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HNPRt","f":"1r1Q3k/p5pp/6p1/8/2P2r2/B4N1P/P3nqP1/3R1N1K b - - 3 31","m":"b8d8 d1d8 f4f8 d8f8","r":423,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"HNsx9","f":"3r2k1/6pp/4Q3/p7/8/4R2P/Pbpq1PP1/6K1 b - - 1 35","m":"g8h8 e6e8 d8e8 e3e8","r":579,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"HS9sr","f":"b1Q3k1/p1P1nppp/P3p3/4q3/8/7P/5PP1/2RR2K1 b - - 0 34","m":"e7c8 d1d8","r":442,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"HTvuf","f":"r1bq3k/p2p1Rpp/nbp5/1p2P1Q1/3P4/1BP5/PP4PP/RN4K1 b - - 2 16","m":"d8g5 f7f8","r":456,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"HVpOw","f":"2r3k1/5ppp/3p4/3P4/1p6/5P2/2Q3PP/4R1K1 b - - 0 29","m":"c8c2 e1e8","r":444,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"HYikT","f":"6k1/1p1r1pp1/p1n1b2B/8/8/1P4Q1/P4PPP/1Bq3K1 w - - 0 26","m":"h6c1 d7d1","r":433,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HaBua","f":"1r4k1/1r3p1p/5Bn1/P7/8/P2R4/3P1PPP/R5K1 w - - 1 38","m":"f6c3 b7b1 a1b1 b8b1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HbXtL","f":"6k1/R4p2/4pb1p/8/4P1p1/3r4/Pr2NPPP/3R2K1 w - - 0 24","m":"d1d3 b2b1 e2c1 b1c1 d3d1 c1d1","r":477,"t":"backRankMate endgame long mate mateIn3"},{"i":"Hd2Um","f":"r1r3k1/p2R1ppp/Bp2p1b1/4P3/4N2n/3R1P2/PPP5/6K1 b - - 2 21","m":"c8c2 d7d8 a8d8 d3d8","r":467,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"HhRtZ","f":"7k/pp4pp/2p4b/2q5/8/2N1p1P1/PP3Q1P/3R1K2 b - - 0 28","m":"e3f2 d1d8 c5f8 d8f8","r":474,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HjfEW","f":"rnb2r1k/ppq3pp/2pB4/3n4/3P4/1BP2Q2/PP4PP/RN3RK1 b - - 0 15","m":"c7d6 f3f8 d6f8 f1f8","r":495,"t":"backRankMate fork mate mateIn2 opening short"},{"i":"HpFFY","f":"1r4k1/5ppp/1R2p3/R2p3b/2P2P2/8/6PP/6K1 b - - 0 34","m":"b8b6 a5a8 b6b8 a8b8","r":432,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HwwVc","f":"6k1/6p1/3R1p1p/3p4/1r1P4/5N2/5PPP/6K1 w - - 0 30","m":"d6d5 b4b1 f3e1 b1e1","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HxSae","f":"8/2p2p1k/p4p1p/8/8/1P5R/P1Rbr1PP/7K w - - 0 34","m":"h3d3 e2e1","r":489,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Hytwk","f":"2r4k/6p1/4Np1p/3Q1P2/q3p3/8/5PPP/3R2K1 w - - 0 38","m":"d5b7 a4d1","r":591,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"I3I4b","f":"1B6/1R2bkq1/2r1b1p1/1Q6/P1P1p3/3P4/5PPP/6K1 w - - 6 34","m":"b5c6 g7a1 b7b1 a1b1","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"I5k1g","f":"7k/r5pp/8/1b3p2/2RB4/1n4P1/4PPBP/6K1 b - - 0 31","m":"b3d4 c4c8 b5e8 c8e8","r":572,"t":"backRankMate endgame mate mateIn2 short"},{"i":"I85Ey","f":"3rr1k1/6pp/1R6/p3pP2/P7/8/2P1qPPP/4R1K1 w - - 0 29","m":"e1e2 d8d1 e2e1 d1e1","r":427,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"I9Yps","f":"3rr1k1/1Q1b1pbp/3B2p1/3P4/4q3/8/PP1RBPPP/3R2K1 w - - 2 22","m":"e2f3 e4e1 d1e1 e8e1","r":576,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"IAnFP","f":"r4Q1k/pprb2pp/1q2p3/3pP3/3N4/1P2P3/P5PP/2R2RK1 b - - 2 20","m":"a8f8 f1f8","r":482,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"IBKLJ","f":"1rr2k2/5p1p/2n2Q2/p1p5/P7/2P3R1/5PPP/3R2K1 w - - 5 27","m":"d1d7 b8b1 d7d1 b1d1","r":513,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IEDn1","f":"r1r3k1/5ppp/p2Q4/1p6/8/2q5/2PR1PPP/1K5R b - - 1 20","m":"c8c6 d6d8 a8d8 d2d8","r":560,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"IETLK","f":"2krr3/ppp2ppp/1b3q2/8/5P1Q/3P1R2/PPP3PP/R1B4K w - - 0 19","m":"h4f6 e8e1 f3f1 e1f1","r":543,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"IFUd9","f":"4rQ1k/p5pp/6p1/4q3/1P1b2P1/4N2P/PP6/5RK1 b - - 3 35","m":"e8f8 f1f8","r":421,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"IGMfs","f":"r4Q1k/pp4pp/3N4/3P2rn/2P1b1q1/4P1P1/P1P4P/R4RK1 b - - 2 23","m":"a8f8 f1f8","r":591,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"IGTIT","f":"6k1/5ppp/8/r3P3/p1R5/P2p4/5PPP/6K1 b - - 0 32","m":"a5d5 c4c8 d5d8 c8d8","r":520,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"IHZQf","f":"3r3k/ppQ3p1/7p/8/3q4/8/2B3PP/3q1R1K w - - 0 40","m":"f1d1 d4d1 c2d1 d8d1","r":544,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IKcqf","f":"6k1/5ppp/3p1b2/1p1P4/2n1P3/6P1/2QN1P1P/q1B3K1 b - - 4 29","m":"c4d2 c2c8 f6d8 c8d8","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"INjbL","f":"4r1k1/ppR2ppp/b7/8/8/P6P/1P3PP1/6K1 b - - 0 24","m":"e8e2 c7c8 e2e8 c8e8","r":485,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IQFy1","f":"2kr3r/ppp2ppp/2n1b3/6N1/1N6/1B6/PPP2PPP/RK1qR3 w - - 2 16","m":"e1d1 d8d1","r":480,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"IQdPL","f":"1qr3k1/5ppp/nQR1p3/p2pP3/3P4/P4N2/1P3PPP/6K1 b - - 0 21","m":"b8b6 c6c8 b6d8 c8d8","r":558,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"ISk0M","f":"3r2k1/5pp1/p4b1p/1pp5/3BR3/2P5/PP3PPP/6K1 w - - 0 24","m":"d4f6 d8d1 e4e1 d1e1","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IWsCa","f":"3q2k1/p4ppp/1p6/8/3Q4/P6P/1P3PP1/4R1K1 b - - 0 26","m":"d8d4 e1e8","r":401,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"IXQak","f":"1r4k1/pB3ppp/5n2/5b2/8/2P1P3/P4PPP/2BR2K1 b - - 0 20","m":"b8b7 d1d8 f6e8 d8e8","r":416,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IZJrs","f":"5bk1/Q4pp1/7p/1P2P3/8/3qP3/5PPP/6K1 w - - 0 32","m":"b5b6 d3b1","r":551,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"IZWXV","f":"6k1/R4ppp/1q2p3/1N2P3/1pP5/1P6/5nPP/3Q1K2 b - - 0 27","m":"f2d1 a7a8 b6b8 a8b8","r":532,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IbzMy","f":"2r3k1/1p3ppp/pQR1p3/3p4/PP3q2/5N1P/5PP1/6K1 b - - 0 24","m":"c8c6 b6d8","r":523,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"IdExO","f":"2r3k1/5ppp/p7/2B1P1P1/2N2P1b/7P/PPn5/3R2K1 b - - 0 29","m":"c8c5 d1d8","r":413,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"IfHlE","f":"1r3rk1/5ppp/p3p3/2P5/R2P4/4P3/2q2PPP/2R3K1 w - - 0 26","m":"c1c2 b8b1 c2c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Iirx6","f":"5rk1/1b1N2pp/pqp1p3/8/4p3/8/PPP2rPP/R1B1R2K w - - 4 19","m":"d7b6 f2f1 e1f1 f8f1","r":477,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"IlRsj","f":"4r1k1/pppr1ppp/2n2b2/8/2PP1B2/5B2/PP3PPP/R3R1K1 b - - 0 17","m":"c6d4 e1e8","r":471,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Imaaf","f":"8/r3kr2/5p2/2pqpP2/2R1Q3/1P1P4/2P2RPP/7K w - - 2 37","m":"e4d5 a7a1 f2f1 a1f1","r":515,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"J1GWj","f":"6k1/5ppp/2b1p3/4P2P/5P2/3N2K1/1Rr3P1/8 b - - 0 35","m":"c2c3 b2b8 c6e8 b8e8","r":405,"t":"backRankMate endgame mate mateIn2 short"},{"i":"J293t","f":"r1Q4k/5Rpp/p7/3p2q1/8/P7/2P2RPP/6K1 b - - 0 22","m":"a8c8 f7f8 c8f8 f2f8","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"J5QPL","f":"4r3/1R6/p6p/2pP2pk/2P5/B2B4/P4bPP/7K w - - 3 32","m":"b7b2 e8e1 d3f1 e1f1","r":450,"t":"backRankMate endgame mate mateIn2 short"},{"i":"J5tWc","f":"rnb1Q1kr/2qp1ppp/p4n2/1p1P4/2B5/5N2/PP1K1PPP/R3R3 b - - 6 14","m":"f6e8 e1e8","r":510,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"J63vC","f":"1r2r2k/p6p/4N1pn/8/1p3R2/3R4/PPP3P1/1K6 w - - 2 33","m":"e6g5 e8e1 d3d1 e1d1","r":555,"t":"backRankMate endgame mate mateIn2 short"},{"i":"J7gHf","f":"5r1k/2p3pp/2pp4/4p1q1/5n1b/BP4P1/P1P2Q1K/R4R2 b - - 2 22","m":"f4e6 f2f8 e6f8 f1f8","r":513,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JA0Ma","f":"r3r1k1/1pp2ppq/1pnp3p/8/4nB2/1N4P1/PPP1Q2P/4RRK1 b - - 1 20","m":"e4c5 e2e8 a8e8 e1e8","r":486,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JCM0u","f":"k4b1r/pp4pp/1qn5/5p2/3R3P/1PN1Q1Pn/P4PK1/5R2 b - - 1 23","m":"c6d4 e3e8 b6d8 e8d8","r":411,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JEYPz","f":"1R6/3pkpp1/r6p/4P3/8/2P5/5PPP/6K1 w - - 2 30","m":"b8b5 a6a1 b5b1 a1b1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"JGpQ6","f":"3r2k1/p4ppp/1p4b1/8/1P1Br1P1/P6P/5P2/2R3K1 b - - 2 30","m":"d8d4 c1c8 d4d8 c8d8 e4e8 d8e8","r":442,"t":"backRankMate endgame long mate mateIn3"},{"i":"JJtgp","f":"1k6/ppp2R1p/8/8/3q4/P6P/3p2PK/R3r3 b - - 2 34","m":"e1a1 f7f8 d4d8 f8d8","r":553,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"JKQd5","f":"3r2k1/1p1r1ppp/p1bp1q2/8/2P1p3/4RN2/PP1Q1PPP/4R1K1 b - - 3 21","m":"e4f3 e3e8 d8e8 e1e8","r":585,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JKx83","f":"rnbq1Q1k/pp4pp/3p4/2pP4/6r1/2b5/PP2N1PP/R1B2RK1 b - - 2 15","m":"d8f8 f1f8","r":429,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JM5dJ","f":"4r1k1/p4p1p/1p4p1/2pp1B2/5q1Q/2P5/PP4PP/7K w - - 0 32","m":"h4f4 e8e1 f4f1 e1f1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JM6NF","f":"3r1Q1k/6pp/1p6/8/1PP1q3/P2p4/R2Br1PP/5R1K b - - 4 25","m":"d8f8 f1f8","r":418,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"JMmJX","f":"2r3k1/5p2/4p1p1/4P2p/3P4/5N2/1q3PPP/1R4K1 w - - 0 43","m":"b1b2 c8c1 f3e1 c1e1","r":454,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JN7Kw","f":"3r2k1/p4ppp/2pQ4/3b4/P7/7P/1R3PPK/4r3 b - - 0 33","m":"d8d6 b2b8 d6d8 b8d8 e1e8 d8e8","r":431,"t":"backRankMate endgame long mate mateIn3"},{"i":"JOaq7","f":"2r1r3/p2n2pk/5n1p/8/8/2N2Q2/PPb2PPP/R1BR2K1 w - - 5 17","m":"d1d2 e8e1","r":410,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JQSMu","f":"6k1/5ppp/p7/1p3P2/4Q3/2b3P1/PPKR3P/4r3 b - - 0 37","m":"e1e4 d2d8 e4e8 d8e8","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JUhyr","f":"4r1k1/p1p1r1Pp/2p5/2bp2Q1/5P2/1P3N2/P5PP/B1R1q2K w - - 3 27","m":"f3e1 e7e1 c1e1 e8e1","r":511,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JYG6J","f":"r1k5/2r5/p2Q4/P2Pp1p1/1P3p2/8/5PPP/6K1 w - - 0 39","m":"d6e5 c7c1 e5e1 c1e1","r":425,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Jay33","f":"1r4k1/1p3ppb/p3p3/2rn3P/3R2P1/2P2B2/PP1R4/2K5 b - - 3 33","m":"d5c3 d4d8 b8d8 d2d8","r":446,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"JeN4C","f":"4r3/p5kp/5p2/3q4/1P6/4rP2/P2R2PP/1Q5K w - - 0 29","m":"d2d5 e3e1 b1e1 e8e1","r":591,"t":"backRankMate endgame fork mate mateIn2 queenRookEndgame short"},{"i":"JmJpk","f":"1k2Qb1r/ppp5/5p2/1q6/3P4/nP3N1P/PKP2PP1/3RR3 b - - 4 30","m":"b5e8 e1e8","r":458,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"JqJvW","f":"r5k1/2q2ppp/p1p3b1/2p2pb1/2N5/1P1P1PN1/P1P1Q1PP/4R2K b - - 4 22","m":"g5h4 e2e8 a8e8 e1e8","r":423,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"JqXre","f":"3r2k1/1p3ppp/8/r7/1p6/pNnRP2P/3K1PP1/R7 b - - 3 43","m":"a5g5 d3d8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"JzyXl","f":"2r3k1/5ppp/p2q4/3Pp3/1pN1P3/1P3N2/P4PPP/2R3K1 w - - 0 30","m":"c4d6 c8c1 f3e1 c1e1","r":419,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"K1Znl","f":"6k1/pb1q2p1/1P2p2p/P3Bp2/4p3/4P3/1Q3PPP/6K1 w - - 1 33","m":"b6a7 d7d1","r":443,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"KFAod","f":"4r1k1/p1p2ppp/8/8/3N1q2/P7/1PP3PP/5R1K w - - 0 26","m":"f1f4 e8e1 f4f1 e1f1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"KGGfd","f":"r3Q1k1/ppp2ppp/8/3P4/1PB4n/P6q/5P1P/3RR2K b - - 9 24","m":"a8e8 e1e8","r":428,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KGSGD","f":"r5k1/1p3ppp/2p5/p3Qq1b/5P2/2P3B1/PP3P2/4R1K1 b - - 2 27","m":"f5h3 e5e8 a8e8 e1e8","r":589,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"KIMAO","f":"6k1/3n1p1p/4p1p1/pr2P3/2N2P2/8/2P2RPP/7K w - - 0 30","m":"c4d6 b5b1 f2f1 b1f1","r":465,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"KKa7N","f":"r5k1/1p3p2/p3r3/2Pp2p1/1P1B1p1p/P1Q5/5PPP/6K1 w - - 0 29","m":"c3f3 e6e1","r":440,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KOx1r","f":"r3k1nr/1b1pppbp/p5p1/1p2P3/4P3/2QBBN2/qP3PPP/2R1K2R b Kkq - 3 14","m":"a8c8 c3c8 b7c8 c1c8","r":576,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"KURkC","f":"3Q1qk1/5ppp/bp6/p5P1/4RP2/P7/1P3P1P/4R1K1 b - - 0 25","m":"f8d8 e4e8 d8e8 e1e8","r":518,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"KV34p","f":"1rbQ2k1/p4ppp/2p5/8/5PPq/2N4r/PP6/2KR2R1 b - - 1 23","m":"h4d8 d1d8","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"KVpvB","f":"6k1/5ppp/p7/8/3P2P1/1P5P/P7/1KQq4 b - - 5 39","m":"d1d4 c1c8 d4d8 c8d8","r":457,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"KWMwT","f":"2b1k3/7p/p1pQprp1/3r4/8/1Pp5/P1P3PP/3R3K w - - 4 26","m":"d1d5 f6f1","r":570,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KXrJW","f":"4k2N/1p2b1p1/p3P3/3p3p/8/1N6/P5PP/2r2R1K w - - 1 39","m":"f1d1 c1d1","r":496,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"KXrua","f":"8/3r4/Q4pkp/8/1B6/8/PPP3PP/7K w - - 1 35","m":"b4c3 d7d1 c3e1 d1e1 a6f1 e1f1","r":484,"t":"backRankMate endgame long mate mateIn3"},{"i":"KZhFM","f":"2kr4/1bpp1pp1/1p6/pP6/8/2PP1PPq/1P2Q2P/4R1K1 b - - 0 24","m":"d8h8 e2e8 h8e8 e1e8","r":442,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"KaCyQ","f":"k6r/pp4p1/2p2n2/4Q3/8/P4KPq/1PP2P2/4R3 b - - 5 31","m":"h8e8 e5e8 f6e8 e1e8 h3c8 e8c8","r":470,"t":"backRankMate endgame long mate mateIn3"},{"i":"Kc9X9","f":"5r1k/pp4p1/7p/3R4/4B3/8/PP3rPP/3R2K1 w - - 0 36","m":"g1h1 f2f1 d1f1 f8f1","r":447,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Kf6BP","f":"2Q5/6pk/4Rnpp/8/8/8/rPP2PPP/3R2K1 w - - 0 25","m":"d1d8 a2a1 d8d1 a1d1 e6e1 d1e1","r":507,"t":"backRankMate endgame long mate mateIn3"},{"i":"KrKSE","f":"5r1k/1R3Bpp/8/5P2/rp1b1P2/2p4P/6PK/2B5 b - - 0 35","m":"f8f7 b7b8 f7f8 b8f8","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Kum2o","f":"3r1k2/p1r2ppp/1p2p3/8/8/5N2/PP3PPP/2R3K1 w - - 0 23","m":"c1c7 d8d1 f3e1 d1e1","r":402,"t":"backRankMate endgame mate mateIn2 short"},{"i":"KvBue","f":"4r2k/pp5p/2n2Np1/8/3P4/3P4/PP4PP/R1B1rR1K w - - 3 23","m":"f6e8 e1f1","r":554,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"KvY4V","f":"Q3b1k1/1p2r2p/6p1/5p2/3p4/1P5R/P3rPPP/3R2K1 w - - 2 35","m":"a8c8 e2e1 d1e1 e7e1","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Kx4xD","f":"3r3r/ppp3pp/2n1kp2/2b1p3/4P3/2B2PP1/PPP4P/2KR1N1R w - - 3 16","m":"c1b1 d8d1","r":426,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"L0MaR","f":"6k1/p4p1p/2p3p1/3p4/8/1R1q1P2/P5PP/4rN1K w - - 0 26","m":"b3d3 e1f1","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"L5YYz","f":"1r2Q2k/p5pp/2p5/5p2/8/P3R2P/1Pr3P1/5RK1 b - - 0 30","m":"b8e8 e3e8","r":446,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"LA8hw","f":"3rr2k/pB3p2/5bp1/8/2P5/4B3/p1Q2PPP/6K1 w - - 0 27","m":"c2a2 d8d1","r":484,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"LDpSO","f":"2kr4/p7/1pp2p1R/4pP2/4P1P1/5Q2/PPP5/1K1q4 w - - 0 28","m":"f3d1 d8d1","r":448,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LGU8X","f":"2kr4/pppr1ppp/2p1b3/2b5/5B2/3N2Q1/PPP2PPP/R5K1 w - - 0 18","m":"d3c5 d7d1 a1d1 d8d1","r":505,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"LGhrJ","f":"6k1/4R2p/p5p1/3P4/8/P7/1rr2PPP/1R4K1 w - - 0 29","m":"b1b2 c2c1 e7e1 c1e1","r":525,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"LGmQZ","f":"8/4k1b1/2P1r3/p7/PpP2R2/8/1PB3PP/7K w - - 1 38","m":"c6c7 e6e1 f4f1 e1f1","r":555,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LLnke","f":"3k1q2/1p1n2bR/2p3p1/p3p3/2Q1P3/1P6/PBPP1r2/2K4R w - - 3 26","m":"c4c3 f2f1 h1f1 f8f1","r":490,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"LMeIW","f":"Q5k1/3r1ppp/Rn6/8/2p5/1p6/5PPP/6K1 b - - 0 35","m":"b6a8 a6a8 d7d8 a8d8","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LQZKc","f":"2r4k/4R1pp/p1N2p2/1p1N4/1P1P4/1Q6/1P3PPP/6K1 w - - 2 26","m":"c6a5 c8c1 b3d1 c1d1 e7e1 d1e1","r":505,"t":"backRankMate endgame long mate mateIn3"},{"i":"LQZQM","f":"6k1/p1p2ppp/8/3n1r2/1BKP4/3P3b/PPPN3P/4R3 b - - 0 30","m":"d5b4 e1e8","r":592,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LUV74","f":"3r3k/5rpp/1p6/p2Qp3/2Rp4/1P1q2B1/PK5P/8 b - - 1 37","m":"d8d5 c4c8 d5d8 c8d8 f7f8 d8f8","r":401,"t":"backRankMate endgame long mate mateIn3"},{"i":"LaCGh","f":"1Q4k1/3n1ppp/2q5/3R2P1/pB2P3/P4P2/7P/1K6 b - - 0 27","m":"d7b8 d5d8 c6e8 d8e8","r":533,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"Lcn9G","f":"5r1k/p5p1/8/1pp4B/8/P2P4/1PP3NP/4Rr1K w - - 1 27","m":"e1f1 f8f1","r":487,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LdN03","f":"4r1k1/pp3pp1/1q2r2p/3R4/8/1QP5/P4PPP/3R2K1 w - - 3 22","m":"b3b6 e6e1 d1e1 e8e1","r":586,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"LhKoJ","f":"2r5/6kp/3p2p1/1p1P4/4p3/P7/1P3PPP/4R1K1 w - - 0 36","m":"e1e4 c8c1 e4e1 c1e1","r":531,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"LjChy","f":"6k1/r7/R1n2p1p/3Np1p1/3pP3/3P2B1/5PPP/6K1 w - - 0 40","m":"a6c6 a7a1 c6c1 a1c1","r":568,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LmuCS","f":"2k1r3/1p1br1b1/pBnR2pp/P4p2/8/2N2B2/1PP2PPP/3R2K1 w - - 2 22","m":"c3d5 e7e1 d1e1 e8e1","r":458,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Lo4BQ","f":"5Q1k/1q2b1pp/p3p3/3pP1PP/r2P4/2P3K1/3r1R1R/4N3 b - - 0 38","m":"e7f8 f2f8","r":424,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Ls7ne","f":"r2r2k1/pp3p1p/2p3p1/6P1/1BQ5/8/PPP3PP/1K1qR3 w - - 1 27","m":"e1d1 d8d1","r":427,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LwPjv","f":"2q3k1/5ppp/2Q1p1b1/2P1Pn2/5P2/1P2BN1P/1K4P1/3R4 b - - 0 33","m":"c8c6 d1d8 c6e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LyCR4","f":"6k1/5ppp/8/8/1P6/3p2KP/2r5/R7 b - - 0 32","m":"d3d2 a1a8 c2c8 a8c8","r":523,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"M3XBc","f":"6k1/5pp1/2Nq1bbp/P7/4p1P1/8/1r2PPB1/3R1K2 w - - 0 32","m":"d1d6 b2b1 d6d1 b1d1","r":578,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"M95xe","f":"r3r1k1/p1p2pp1/2pb1n1p/7P/3p3Q/1P3P2/PBPP1P2/RNK1q2R w - - 1 16","m":"h1e1 e8e1","r":477,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"MHgOd","f":"3r1r1k/6pp/p7/1p6/4R1B1/P2R1n2/1P3PPP/6K1 w - - 1 29","m":"d3f3 d8d1 e4e1 d1e1","r":431,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MIZ8w","f":"1r5k/p3q1pp/8/4pp2/8/P3P1P1/2R1KP1P/1Q3B1R b - - 0 24","m":"b8b1 c2c8 e7d8 c8d8","r":523,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MKKHn","f":"3r2k1/2pR1ppp/p1p2b2/8/8/2N5/PPP2PPP/4R1K1 b - - 0 17","m":"d8d7 e1e8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MLXRN","f":"4rk1r/pQR2ppp/6b1/8/8/8/PP4PP/3Rq2K w - - 1 24","m":"d1e1 e8e1","r":414,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MMcjF","f":"3r2k1/5ppp/Rp2p3/8/2n2K2/P5N1/6PP/8 b - - 7 31","m":"d8d5 a6a8 d5d8 a8d8","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MMjEB","f":"4r1k1/5ppp/1R6/2p5/8/6P1/3K1P1P/8 b - - 2 37","m":"e8e5 b6b8 e5e8 b8e8","r":413,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"MNvgs","f":"2r4k/p5pp/8/4q3/8/8/P4PPP/4R1K1 w - - 0 26","m":"e1e5 c8c1 e5e1 c1e1","r":475,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"MPURK","f":"1r3k2/5p1p/2R1p1p1/p7/P1pP4/4P3/5PPP/6K1 w - - 2 32","m":"c6c4 b8b1 c4c1 b1c1","r":418,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"MRR9g","f":"2k1Q2r/1ppn4/1p1p1p2/qP1P4/2PP1RPp/r6P/P5B1/4R1K1 b - - 8 31","m":"h8e8 e1e8","r":521,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"MWZ0t","f":"2krr3/pp3ppp/2n5/8/2P5/1NPb4/P4PPP/R2B1K1R w - - 1 16","m":"f1g1 e8e1","r":453,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"MYTpc","f":"r5k1/5ppp/8/2r5/RR4P1/7P/7K/8 b - - 0 39","m":"a8a4 b4b8 c5c8 b8c8","r":562,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"MaokG","f":"3rr1k1/ppp2ppp/2n2b2/5b2/4B3/5Q2/PPP2PPP/R1B3K1 w - - 0 15","m":"f3f5 d8d1","r":590,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"MbAbl","f":"2r3k1/5ppp/8/8/P1P5/1RP4P/2r2PP1/6K1 b - - 0 32","m":"c8c4 b3b8 c4c8 b8c8","r":414,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"MbCyY","f":"2kr4/Qpp3pp/8/8/8/8/PPn2PPP/R2q2K1 w - - 3 24","m":"a1d1 d8d1","r":443,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MdfVo","f":"3r2k1/1q3ppp/4pn2/p3pP2/1pPbP1PP/1P1QNK2/P3N3/3R4 b - - 3 35","m":"d4b6 d3d8 b6d8 d1d8 f6e8 d8e8","r":559,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"MuqwF","f":"8/2k2pp1/4p2p/p2pP3/1r1n4/Q4N2/5PPP/6K1 w - - 0 27","m":"f3d4 b4b1 a3c1 b1c1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MxbO9","f":"r5k1/p1p2ppp/2p5/2q5/5P2/4Q3/PPP3PP/4R1K1 b - - 0 19","m":"c5c2 e3e8 a8e8 e1e8","r":587,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"N27mK","f":"r4r1k/ppp3pp/1bn5/3Bp3/3P1n1q/2P2Q1N/PP5K/RNB2R2 b - - 7 19","m":"f4h3 f3f8 a8f8 f1f8","r":485,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"N3RvZ","f":"1k1r1b1r/ppp2pp1/7p/4P3/6b1/2N1P3/PP2BPPP/3R1RK1 b - - 0 15","m":"g4e2 d1d8","r":599,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"N4bby","f":"r1r1Q2k/5ppp/8/3b4/8/4R3/5PPP/4R1K1 b - - 1 30","m":"c8e8 e3e8 a8e8 e1e8","r":523,"t":"backRankMate endgame mate mateIn2 short"},{"i":"N7g6K","f":"r7/1p6/1Rn1B3/2p1k1p1/5p2/2P5/5PPP/6K1 w - - 4 38","m":"e6d7 a8a1 b6b1 a1b1","r":524,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NBK8U","f":"3r1kn1/p4pp1/2p1p1p1/8/1P5R/2P3N1/P2r1PPP/R5K1 w - - 1 28","m":"g3e4 d2d1 a1d1 d8d1","r":495,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NDDPN","f":"3r4/6k1/p3R2p/1p3pp1/8/P1N2P2/1P4PP/3r3K w - - 1 37","m":"c3d1 d8d1 e6e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NDqgy","f":"6k1/2rn1ppp/4p3/2PpN3/3P4/r3P3/5P1P/1R3RK1 b - - 2 29","m":"d7e5 b1b8 c7c8 b8c8","r":533,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NEuWi","f":"3r2k1/5p1p/R7/8/1P6/P1n2R2/6PP/7K w - - 2 39","m":"f3h3 d8d1","r":471,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"NLO8L","f":"2r3k1/4qpp1/p6p/1p1p4/8/8/PP3PPP/1B2R1K1 w - - 0 27","m":"e1e7 c8c1 e7e1 c1e1","r":571,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"NLxnE","f":"3r1rk1/2R1bppp/p3p3/P3P3/QP6/8/q5PP/3R3K w - - 1 24","m":"a4a2 d8d1","r":404,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"NN7lY","f":"r1r3k1/1p3ppq/p1bRp3/4P3/2PQ1P2/5NP1/P2R1K2/8 b - - 5 34","m":"c6f3 d6d8 c8d8 d4d8 a8d8 d2d8","r":581,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"NQddY","f":"Q7/ppp1kp2/2n3n1/1B1p4/6b1/1P2P3/PBPP1q1P/RNK3rR w - - 4 17","m":"h1g1 f2g1 b5f1 g1f1","r":568,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"NRwZ6","f":"3r1rk1/p6p/1p1P1qp1/2p3Q1/8/7R/PP4PP/3R3K w - - 0 31","m":"g5h6 f6f1 d1f1 f8f1","r":491,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"NXZzU","f":"6k1/pp3ppp/8/8/3r4/1P4PP/P5P1/2R3K1 b - - 1 29","m":"d4d7 c1c8 d7d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"NYVvf","f":"r1b3k1/1p3ppp/p3pn2/q3Q3/4P3/2N5/PP3PPP/1B1R2K1 b - - 0 18","m":"a5e5 d1d8 f6e8 d8e8","r":400,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"NcE2m","f":"1Qbq2k1/3n1ppp/4p3/8/P7/1P4P1/2P2PBP/3R2K1 b - - 0 25","m":"d7b8 d1d8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"NdmLu","f":"3rkr2/ppp4p/2n3pB/4p3/8/3P4/PPP1Q1PP/RN2bq1K w - - 2 18","m":"e2f1 f8f1","r":538,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"NgC2k","f":"2r3k1/1p3ppp/p2pb3/6P1/5r2/2PP3P/P1K1R3/4R3 b - - 2 24","m":"e6a2 e2e8 c8e8 e1e8","r":556,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NgD7U","f":"5rk1/2R2pbp/2B1p1p1/8/2r5/5QB1/1P3PPP/6K1 w - - 2 32","m":"g3d6 c4c1 f3d1 c1d1","r":478,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"NhDAC","f":"r1b1rQ1k/pppp2pp/8/4q3/2B5/2P1P3/P1P3PP/R4RK1 b - - 2 14","m":"e8f8 f1f8","r":528,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Nj52t","f":"3r2k1/5p1p/B5p1/4pbN1/2P5/1P6/P4qPP/5R1K w - - 1 30","m":"f1f2 d8d1 f2f1 d1f1","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NjsZb","f":"r1bqr1k1/ppp2ppp/3p4/8/2BR3b/2NP2Q1/PPP2PPP/R1B3K1 w - - 1 14","m":"d4h4 e8e1","r":538,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Nljzp","f":"r3r1k1/p1p2ppp/4b3/4R1P1/2p2P1P/P1P5/1P6/K3R3 b - - 0 27","m":"e6g4 e5e8 a8e8 e1e8","r":473,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NoOX8","f":"2r3k1/1p3ppp/p7/3n4/PP1P1P2/5PP1/4R1K1/2B5 b - - 0 30","m":"c8c1 e2e8","r":409,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"NseuR","f":"4r1k1/5ppp/8/1p6/8/1Q6/P3qPPP/R4RK1 w - - 1 33","m":"f1e1 e2e1 a1e1 e8e1","r":503,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Nuiqn","f":"2r1Q2k/3N2pp/1pP2p2/nP6/3q4/7P/5PP1/4R1K1 b - - 1 41","m":"c8e8 e1e8","r":481,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"NwGqe","f":"rnbQ2k1/ppp1qppp/8/4P3/8/8/PPP2PPP/2KR1BNR b - - 0 11","m":"e7d8 d1d8","r":444,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"O2pye","f":"2r3k1/5ppp/1R2p3/p2pP3/3P4/P5P1/5P1P/6K1 b - - 0 25","m":"c8c4 b6b8 c4c8 b8c8","r":481,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"O4AbB","f":"4r3/ppp2ppk/2n5/8/8/P1B5/1PPRrPPP/5RK1 w - - 3 22","m":"f1d1 e2e1 d1e1 e8e1","r":508,"t":"backRankMate endgame mate mateIn2 short"},{"i":"O4HNC","f":"6k1/1p3ppp/8/8/1q1p1pP1/pP1P3P/K1R5/4Q3 b - - 0 28","m":"b4e1 c2c8 e1e8 c8e8","r":488,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"OEwhe","f":"5rk1/1p3rpp/p6q/2b5/4p1Q1/2P5/PP4PP/R1B4K w - - 0 22","m":"c1h6 f7f1 a1f1 f8f1","r":424,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OK75v","f":"1r4k1/p4p2/2p3p1/2PpR2p/3P4/P7/5PPP/6K1 w - - 1 27","m":"e5e3 b8b1 e3e1 b1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"OMr9z","f":"6k1/1pr2ppp/4p3/R2pP3/3P4/nN6/1n2NPPP/4K3 b - - 1 28","m":"a3c4 a5a8 c7c8 a8c8","r":482,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ORPZ9","f":"4r1k1/pp3ppp/2p5/6n1/6P1/1P2R2P/P3B1K1/3R4 b - - 0 25","m":"e8e3 d1d8 e3e8 d8e8","r":475,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OS3AO","f":"8/1P4p1/pr4k1/5p1p/8/2P5/P4PPP/4R1K1 w - - 1 27","m":"e1e7 b6b1 e7e1 b1e1","r":529,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"OWy3T","f":"r1r3k1/3q1pp1/1Q2p2p/1NP5/1P6/5N2/5PPP/3R2K1 w - - 5 26","m":"d1d7 a8a1 d7d1 a1d1 f3e1 d1e1","r":571,"t":"backRankMate endgame long mate mateIn3"},{"i":"OYERU","f":"1R6/r4p2/2R4p/3p3p/3k4/8/5PPP/6K1 w - - 0 43","m":"c6h6 a7a1 b8b1 a1b1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ObF0A","f":"r2q1r1k/p5pp/1bB5/3Q4/4n3/5N2/PPP3PP/R1B4K w - - 1 18","m":"d5e4 d8d1 e4e1 d1e1 f3e1 f8f1","r":446,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"OeUBX","f":"4r1k1/pp3ppp/8/8/8/3Q1q1P/PPP5/1K6 w - - 0 25","m":"d3f3 e8e1 f3d1 e1d1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"OgVYz","f":"6k1/pb3ppp/1p2p3/1Nq5/3QP3/1P3P2/P5PP/6K1 b - - 2 25","m":"c5c2 d4d8","r":541,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Oh0Ul","f":"r4rk1/2p3p1/pp1pp2p/P3p3/2P1P3/1QNP4/1P4PP/R4q1K w - - 2 19","m":"a1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Ojh4e","f":"r2B1b1k/pp3Rpp/2pnP3/3p1Q2/3P4/2N4P/P5P1/6K1 b - - 0 24","m":"d6f5 f7f8","r":562,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"OlL4V","f":"r5k1/ppp1bppp/7B/4PB2/1PP3q1/P1p3Q1/5PPP/R2r2K1 w - - 0 20","m":"a1d1 g4d1","r":556,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"OlPGh","f":"3N2k1/p4pp1/4p2p/Prp5/4R3/2n5/5PPP/2R3K1 w - - 0 28","m":"c1c3 b5b1 c3c1 b1c1 e4e1 c1e1","r":400,"t":"backRankMate endgame long mate mateIn3"},{"i":"OquhK","f":"5rk1/bp3ppp/5q2/pB1p4/P7/2P3P1/1P2QPKP/4R3 b - - 2 23","m":"f8d8 e2e8 d8e8 e1e8","r":593,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"OsN1q","f":"3r2k1/1p2bppp/p7/8/1P2QB2/8/5PPP/2q3K1 w - - 0 24","m":"f4c1 d8d1 e4e1 d1e1","r":577,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"OxOZk","f":"6k1/5ppp/p3pq2/1p6/3R3P/6P1/PP3PK1/2Q5 b - - 0 22","m":"f6d4 c1c8 d4d8 c8d8","r":463,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"OzZpO","f":"1Q4k1/5ppp/2nr4/2R5/8/5P2/5P1P/6K1 b - - 0 33","m":"c6b8 c5c8 d6d8 c8d8","r":527,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"P2z6W","f":"2rR2k1/pp3ppp/8/5b2/8/1n3P2/PP3KPP/3R4 b - - 1 24","m":"c8d8 d1d8","r":485,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"PAwmT","f":"r3r1k1/5pp1/p1n1qn1p/1p1p4/5B2/2P2Q2/PPB2PPP/R4RK1 w - - 2 20","m":"f1e1 e6e1 a1e1 e8e1","r":557,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"PAxTA","f":"r2q4/pp4Q1/3rkp2/4p1B1/8/7R/PPP2PPP/R5K1 w - - 1 23","m":"h3h6 d6d1 a1d1 d8d1","r":532,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"PB0N3","f":"3r2k1/5ppp/2R5/8/8/1Pp3P1/5PP1/6K1 b - - 1 31","m":"d8d3 c6c8 d3d8 c8d8","r":416,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PB4WW","f":"k1r2Q2/pp6/8/5P2/4q3/8/PP1R4/K2R4 b - - 0 35","m":"c8f8 d2d8 f8d8 d1d8","r":485,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"PCgUU","f":"6k1/2R2ppp/1p2p3/4P3/2B1b3/1Pn2N2/5KPP/3r4 b - - 3 24","m":"e4f3 c7c8 d1d8 c8d8","r":552,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PE8gQ","f":"7r/3k2pp/r2n1p2/1pQbp3/1Bp5/2P5/2P2PPP/3R2K1 w - - 4 26","m":"d1d5 a6a1 d5d1 a1d1","r":578,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PGNSW","f":"k4r1r/2R5/p2p1N2/3PpRb1/8/8/PPP5/1K6 w - - 1 37","m":"f5g5 h8h1 g5g1 h1g1","r":488,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"PJInT","f":"6k1/pp3ppp/3r4/8/1P5P/2r2P2/P4PK1/2R2R2 b - - 4 24","m":"c3a3 c1c8 d6d8 c8d8","r":438,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PKO86","f":"3r2k1/5ppp/8/p3p3/2P5/Pr3P1P/3RKP2/3R4 b - - 0 32","m":"b3b8 d2d8 b8d8 d1d8","r":447,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PKoAk","f":"r1b2Q1k/p1p3pp/2p1r3/8/1b1qP1n1/2NB4/PPPB2PP/R4R1K b - - 2 15","m":"b4f8 f1f8","r":455,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"PMMbt","f":"6Q1/1brkqp2/p2p4/1p1P1Np1/8/1B6/PP4PP/7K w - - 0 26","m":"f5e7 c7c1 b3d1 c1d1","r":589,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PN2LG","f":"6k1/pp3pp1/2p1p2p/4P3/PP6/2Pr4/5PPP/4R1K1 w - - 3 29","m":"e1e3 d3d1 e3e1 d1e1","r":500,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PNZMW","f":"2kr3r/ppp3pp/5p2/5b2/4PP2/4b1B1/PPP3PP/2KR1B1R w - - 1 16","m":"c1b1 d8d1","r":402,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"PWilT","f":"6k1/1p3ppp/1q2p3/3pPn2/3P4/5N1P/Rb1N1PP1/2Q3K1 b - - 0 27","m":"b2c1 a2a8 b6d8 a8d8","r":584,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PZxz8","f":"6k1/p3rppp/1p6/2p5/3p4/2PR3P/PP4PK/8 b - - 0 30","m":"d4c3 d3d8 e7e8 d8e8","r":440,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Piwnk","f":"1k1r4/1p2b1pp/2n5/8/1P6/P2rB1N1/2R2PPP/R5K1 w - - 3 28","m":"g3e4 d3d1 a1d1 d8d1","r":466,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"PjArZ","f":"1r2r1k1/pbpp1ppp/8/2P1bqB1/8/P3QNP1/1P3PKP/4R2R b - - 2 19","m":"e5b2 e3e8 b8e8 e1e8","r":541,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"PntiI","f":"7k/1B1p2pp/1r1P1p2/4p3/1p6/8/1P3PPP/R5K1 b - - 0 27","m":"b6b7 a1a8 b7b8 a8b8","r":424,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PpTAS","f":"3r4/R3Npkp/2n3p1/8/8/8/PP3PPP/6K1 w - - 1 25","m":"e7c6 d8d1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Pr3QZ","f":"1r2Q2k/p1p3pp/1p4b1/4P1bq/3P1R2/2N5/PP1B2PP/5RK1 b - - 0 25","m":"b8e8 f4f8 e8f8 f1f8","r":553,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Pu7N5","f":"3rk2r/pp3ppp/2n1p3/3P4/8/4B3/Pb3PPP/RN1R2K1 w k - 0 16","m":"d5c6 d8d1","r":589,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Pw0cc","f":"4r1k1/bp2qppp/1np2p2/p7/P2P4/1PQ2NB1/3R1PPP/3Rr1K1 w - - 5 26","m":"f3e1 e7e1 d1e1 e8e1","r":425,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Pw6Xq","f":"4rk2/p5p1/b1P3pp/8/1p6/8/PPB3PP/4R2K w - - 0 27","m":"c2g6 e8e1","r":494,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"PxW0j","f":"3rkb2/N1R2p2/4p1pp/4P3/8/5N2/PP3PPP/2Rr2K1 w - - 1 26","m":"c1d1 d8d1 f3e1 d1e1","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Pxm6E","f":"5Q2/7k/p7/1p4r1/2p5/8/PPP5/1K6 w - - 1 38","m":"f8f6 g5g1 f6f1 g1f1","r":401,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"PzIPu","f":"3r2k1/ppR2ppp/4p3/4n3/4P3/6P1/PP3PBP/6K1 b - - 1 21","m":"d8d7 c7c8 d7d8 c8d8","r":485,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Q0ywq","f":"2r3k1/5pp1/p3p2p/1p2P3/P3R3/8/1P3PPP/1Rr3K1 w - - 1 23","m":"b1c1 c8c1 e4e1 c1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Q4BwO","f":"r6k/2R3pp/1pPP1p2/1b6/8/4PN2/5PPP/6K1 w - - 1 32","m":"d6d7 a8a1 f3e1 a1e1","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Q6TvL","f":"2R5/Bp3ppk/4p3/1r2P2p/8/8/6PP/7K w - - 2 36","m":"a7b8 b5b1 c8c1 b1c1","r":421,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Q79om","f":"3r2k1/p5pp/2p1qb2/5b2/2P2Q2/BP6/P4PPP/4R1K1 w - - 2 22","m":"e1e6 d8d1 e6e1 d1e1","r":568,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QAtjs","f":"6k1/2p2pp1/7p/3Pq3/2P1Pp2/1r3Q2/6PP/7K w - - 0 30","m":"f3b3 e5a1 b3b1 a1b1","r":521,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"QCFma","f":"2R5/5p2/p2p2pk/q2Pp2p/4P3/Pp3P2/1n2R1PP/1B5K w - - 0 30","m":"e2b2 a5e1","r":400,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"QEbQy","f":"6k1/R4p1p/3b1Bp1/3Pp3/1rr1P3/8/5PPP/2R3K1 w - - 0 25","m":"c1c4 b4b1 c4c1 b1c1","r":528,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QIook","f":"2r2r1k/pp3Qpp/8/2R5/3p4/8/PP4PP/5q1K w - - 0 30","m":"f7f1 f8f1","r":504,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"QIya2","f":"5r2/1p4Q1/pk4p1/3Pp2p/2Pp4/3P4/P5PP/R4q1K w - - 3 27","m":"a1f1 f8f1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"QLEFO","f":"r2Q3k/4rBpp/2p2q2/1p3p2/1P6/8/5PPP/3R1RK1 b - - 1 28","m":"a8d8 d1d8 e7e8 d8e8","r":456,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QMZnL","f":"3r2k1/R1p2pp1/1q3b1p/8/8/5N2/P1P2PPP/1Q4K1 w - - 1 22","m":"b1b6 d8d1 f3e1 d1e1","r":533,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QPjql","f":"2q2k2/7p/p2P2p1/1p1Q1p2/1P2p3/P7/5PPP/6K1 w - - 0 32","m":"d6d7 c8c1 d5d1 c1d1","r":456,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"QRBjz","f":"r4rk1/pp1R2p1/2p4p/4Q3/2P5/1PN5/1Pb3PP/4Rq1K w - - 2 25","m":"e1f1 f8f1","r":454,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"QTdVC","f":"4rrk1/6pp/8/8/2q1p3/1P6/P5PP/2R2R1K w - - 0 27","m":"c1c4 f8f1","r":458,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"QUbFa","f":"r1b2r1k/5Bpp/3R1p2/1pp5/p4PPP/P4N2/1PP5/2K3R1 b - - 0 25","m":"f8f7 d6d8 f7f8 d8f8","r":532,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QUyst","f":"r3BQ1k/pp4pp/7q/2bp4/3Nb3/1PP1P2P/P5P1/4RRK1 b - - 6 23","m":"c5f8 f1f8","r":454,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"QX2rY","f":"5Q1k/2q1b1pp/p1p3r1/2p1p3/2NpP1b1/1P1P4/P1PB2PP/5RK1 b - - 13 27","m":"e7f8 f1f8","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"QYo2w","f":"4r1k1/5ppp/1p6/1Pp5/4Q3/p3P3/P5PP/3R2K1 b - - 0 34","m":"e8e4 d1d8 e4e8 d8e8","r":459,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"QYqda","f":"r5k1/5ppp/R2Qp3/1p1p4/2qP4/2r5/2P2PPP/5RK1 b - - 0 22","m":"a8a6 d6d8","r":541,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"QZxot","f":"1r4k1/p1rR1ppp/npp1p3/4Pb2/1P3P2/P1N4P/5PB1/3R2K1 b - - 4 21","m":"b8c8 d7d8 c8d8 d1d8","r":587,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QdQSr","f":"r4r1k/pp4pp/4B3/3pP3/P5Q1/8/1P4PP/R4q1K w - - 2 25","m":"a1f1 f8f1","r":412,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Qf1AI","f":"1B4k1/5ppp/2p2n2/8/Pb4q1/1P4P1/NP5P/2KRR3 b - - 0 24","m":"b4e1 d1d8 f6e8 d8e8","r":500,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Qfbtt","f":"1r4k1/1q3ppp/2pRp3/p1P5/1P2P3/P7/3Q1PPP/6K1 b - - 1 30","m":"a5b4 d6d8 b8d8 d2d8","r":517,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Qgzd4","f":"r3r1k1/1p3ppp/2p5/P2p4/1p1Pb3/1B3PPq/2P1Q2P/R3R1K1 b - - 0 22","m":"e4f5 e2e8 a8e8 e1e8","r":492,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QmcKU","f":"3r2k1/p1p2p1p/1p2n1p1/1R2N3/4P3/P1P4P/P2r1PPB/R5K1 w - - 3 27","m":"e5c6 d2d1 a1d1 d8d1","r":599,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QuNOu","f":"5r1k/pppqb1pp/3p2r1/3Pp3/2P1P1Q1/2N3PP/PP1B1R1K/5R2 b - - 0 27","m":"g6g4 f2f8 e7f8 f1f8","r":578,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QxKts","f":"1k3rQ1/pppR4/8/8/qP6/2P5/1K6/3R4 b - - 0 44","m":"f8g8 d7d8 g8d8 d1d8","r":436,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"R0c2s","f":"4r1k1/p4ppp/2p1b3/5N2/2N5/PP1r1P2/5KPP/4R3 b - - 1 24","m":"e6f5 e1e8","r":481,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"R5Vza","f":"rn2r1k1/p3qppp/3p4/1p1P1b2/2p1P3/5Q2/PPB2PPP/R3R1K1 w - - 0 18","m":"e4f5 e7e1 a1e1 e8e1","r":534,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"R72B1","f":"r1b1r1k1/p1p2ppp/5q2/2Bp4/4n3/2P2N2/PP1N1PPP/R2QR1K1 b - - 0 14","m":"e4c5 e1e8","r":577,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"RA2Oo","f":"r2q1r2/1p3pkp/p5pN/2p1p3/2P5/1P4Q1/P1P2PPP/RN4K1 w - - 2 18","m":"h6g4 d8d1","r":446,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"RJbTL","f":"2r3k1/5ppp/8/3pRpb1/3P4/2R4P/6PB/6K1 b - - 0 29","m":"c8c3 e5e8","r":426,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"RLFZl","f":"3R4/pp3rkp/2p3p1/8/8/2N5/PPP4P/1K6 w - - 2 29","m":"c3e4 f7f1 d8d1 f1d1","r":552,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ROLBj","f":"3r2k1/1p3ppp/p3p3/3rP3/Pb6/1P2B3/5PPP/1RR3K1 w - - 4 23","m":"c1c7 d5d1 b1d1 d8d1","r":460,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RQxi8","f":"3r1r1k/2p3pp/1pPN4/4p3/1p2P3/2P4P/P5P1/R4R1K b - - 0 29","m":"d8d6 f1f8","r":452,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"RVdEP","f":"3r2q1/8/p1pQ4/6pk/4R1p1/1P6/P4PPP/6K1 w - - 1 40","m":"d6g3 d8d1 e4e1 d1e1","r":507,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RX8NG","f":"1Q4k1/5ppp/p1r5/4q3/2Pp1P2/3P2P1/7P/1R4K1 b - - 0 29","m":"e5b8 b1b8 c6c8 b8c8","r":406,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Ra8mz","f":"6k1/2p2ppp/2p1p3/6P1/5rq1/1P6/7K/R7 b - - 5 35","m":"g4g5 a1a8 g5d8 a8d8","r":532,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Raksx","f":"rnb1r1k1/pp3ppp/2p5/1B6/5B2/2P2N2/P1P2nPP/2K1R2R b - - 1 15","m":"f2h1 e1e8","r":593,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"RbAHe","f":"rn3k2/1p2bpp1/p7/3p2P1/2q5/1N5R/PPPBQPB1/2K5 b - - 0 20","m":"c4e2 h3h8","r":481,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"RjpvQ","f":"3r2k1/p3ppbp/5np1/4p3/6b1/1Bq3Q1/PPP2PPP/R1B3K1 w - - 0 17","m":"g3c3 d8d1 c3e1 d1e1","r":487,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"RkEm5","f":"1r3rk1/6pp/3ppq2/p1p2P1Q/3pP3/P2P4/1P4PP/2R2R1K w - - 1 23","m":"f5e6 f6f1 c1f1 f8f1","r":527,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RmhRJ","f":"r2Q1k1r/1bp1nppp/p3p3/1p3q2/8/1BN5/PP3PPP/3RR1K1 b - - 5 18","m":"a8d8 d1d8","r":480,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"RpOIe","f":"5rk1/pp2bppp/2n5/2p1P3/4p1Q1/2P2N2/PP3PPP/RNBr2K1 w - - 3 15","m":"f3e1 d1e1","r":484,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"RrYkK","f":"2q2Q1k/1r4np/3B4/p2pP3/2pPb3/2P5/2P2RPK/8 b - - 1 35","m":"c8f8 f2f8","r":595,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"RrdQT","f":"4kb1r/1p1npp1p/p4np1/6B1/N7/8/PP2BPPP/2R3K1 b k - 0 16","m":"f8g7 c1c8","r":536,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"RueJ4","f":"3rr1k1/p1q1bppp/2p5/1p1n4/8/1PP2B1P/PB2QPP1/R3R1K1 b - - 4 20","m":"e7f6 e2e8 d8e8 e1e8","r":456,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Rzc5W","f":"6k1/ppq2ppp/2p5/6P1/8/2P1rBQP/PP2P3/2KR4 b - - 0 24","m":"c7g3 d1d8 e3e8 d8e8","r":525,"t":"backRankMate endgame mate mateIn2 short"},{"i":"S08O3","f":"2r3k1/3q2p1/5n1p/R3p3/1n2P3/R7/1P3PPP/3Q2K1 w - - 0 30","m":"d1d7 c8c1 d7d1 c1d1","r":417,"t":"backRankMate endgame mate mateIn2 short"},{"i":"S0hnx","f":"1r4k1/7p/2p3p1/p1Rr1p2/8/P3P3/5PPP/3R2K1 w - - 0 27","m":"d1d5 b8b1 c5c1 b1c1 d5d1 c1d1","r":596,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"S26Z2","f":"3r4/p1QP2kp/5qp1/2p2p2/8/5P2/P3R1PP/7K w - - 0 34","m":"c7a7 f6a1 e2e1 a1e1","r":591,"t":"backRankMate endgame mate mateIn2 short"},{"i":"S4DPf","f":"3r2k1/r1q1bppp/bn3N2/8/1p1P1N2/2p3P1/PB2QPBP/2R1R1K1 b - - 0 21","m":"e7f6 e2e8 d8e8 e1e8","r":580,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"SBss4","f":"3Q1b1r/1k2p1pp/p7/1pp5/B7/1P6/Pr3PPP/2R3K1 w - - 1 22","m":"c1c5 b2b1 c5c1 b1c1 d8d1 c1d1","r":581,"t":"backRankMate endgame long mate mateIn3"},{"i":"SCMtc","f":"5rk1/3r1pb1/p3p1pp/1p3n2/2p1qP2/P1P4Q/1P4PP/R1B1R2K w - - 0 24","m":"e1e4 d7d1 e4e1 d1e1","r":456,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"SELxN","f":"3rk2r/2q1npp1/7p/pB2pP2/1p2b1P1/4B2P/PPPQ4/2KR3R b k - 1 21","m":"e8f8 d2d8 c7d8 d1d8","r":432,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"SJdF6","f":"k4n2/ppQ2r2/4Rp1p/3p2pP/P2P4/8/2P2P2/2K5 b - - 0 32","m":"f7c7 e6e8 c7c8 e8c8","r":548,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"SNtVe","f":"5r2/N2b2pk/3Q3p/2P5/8/8/P5PP/4Rq1K w - - 2 37","m":"e1f1 f8f1","r":418,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SPl5W","f":"5rk1/8/pq5p/1p2Q1p1/1P1N2P1/P7/3R2PP/3R1r1K w - - 8 38","m":"d1f1 f8f1","r":505,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SPtq8","f":"r4rk1/4Rppp/4b3/8/8/Q7/1P3PPP/6K1 w - - 3 25","m":"a3c3 a8a1 c3c1 a1c1","r":401,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SR2LZ","f":"5rk1/1p1R1ppp/p3p3/8/4P3/2r5/P1P2PPP/2KR4 b - - 3 18","m":"f8c8 d7d8 c8d8 d1d8","r":500,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SRdH9","f":"5r2/pp1k2pQ/2n5/4P1B1/1b1nN3/P7/1P4PP/3R1q1K w - - 1 30","m":"d1f1 f8f1","r":481,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"STA84","f":"2r2rk1/1p5p/p3n1pB/4p3/1pP1Q3/2b5/P1B3PP/1R3q1K w - - 2 30","m":"b1f1 f8f1","r":599,"t":"backRankMate master masterVsMaster mate mateIn1 middlegame oneMove"},{"i":"STHGC","f":"4r1k1/p4ppp/2p2n2/3p4/5B2/2PB4/PP4PP/RN1Qq2K w - - 1 24","m":"d1e1 e8e1 d3f1 e1f1","r":480,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"SUFOw","f":"2r3k1/1p3ppp/p3p3/8/8/Pb1RPB2/5PPP/6K1 w - - 0 25","m":"d3b3 c8c1 f3d1 c1d1","r":481,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SZWfj","f":"r2r4/2k2p2/6pp/p3n3/2P5/2R5/P3RPPP/6K1 w - - 0 31","m":"e2e5 d8d1 e5e1 d1e1","r":427,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Sbl3l","f":"5r1k/p1R3pp/2p5/2P5/8/P1b1PRP1/3r3P/6K1 b - - 0 32","m":"f8f3 c7c8 d2d8 c8d8 f3f8 d8f8","r":554,"t":"backRankMate endgame long mate mateIn3"},{"i":"ShwKa","f":"2r3k1/pp3ppp/4p3/3nN3/3P4/P7/1P3PPP/3R2K1 w - - 1 28","m":"d1d2 c8c1 d2d1 c1d1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SisOs","f":"r3r1k1/2q2ppp/p1p1b3/3p4/3N4/2P5/P1P1QPPP/R3R1K1 b - - 4 17","m":"e6h3 e2e8 a8e8 e1e8","r":588,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"SjBB9","f":"2R5/pp3kp1/6pp/2NrP3/7P/8/PP2n1P1/K2qR3 w - - 8 35","m":"e1d1 d5d1","r":410,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SkVHp","f":"1rn2k2/3R2p1/R4p1p/P7/4P3/2P5/5PPP/6K1 w - - 5 28","m":"c3c4 b8b1 d7d1 b1d1","r":521,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SlXLO","f":"4r1k1/p4ppp/1p6/2p5/2P5/2P1PP2/P6P/3R1K2 b - - 0 22","m":"e8e3 d1d8 e3e8 d8e8","r":440,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SloBx","f":"8/6k1/4p1pp/8/8/1r6/2p2PPP/2R3K1 w - - 0 43","m":"c1c2 b3b1 c2c1 b1c1","r":407,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SuoEl","f":"3r4/ppp2p1k/6p1/4Rb2/8/4N3/PPP2PPP/6K1 w - - 0 22","m":"e3f5 d8d1 e5e1 d1e1","r":452,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Swfbo","f":"7k/2p3pp/R4p2/1p1r4/8/4K1P1/7P/8 b - - 1 30","m":"c7c5 a6a8 d5d8 a8d8","r":597,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Sx2Jx","f":"1r6/8/p5k1/4p2p/P4p2/8/5PPP/4R1K1 w - - 2 39","m":"e1e5 b8b1 e5e1 b1e1","r":421,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Sx41W","f":"8/5k1p/1pp3p1/8/3P4/8/rP3PPP/2R3K1 w - - 0 29","m":"c1c6 a2a1 c6c1 a1c1","r":491,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"T1OKS","f":"5r1k/6pp/p7/1p2q3/8/8/PPP3P1/1K2R3 w - - 0 30","m":"e1e5 f8f1 e5e1 f1e1","r":432,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"T1U3p","f":"k2r4/pp2b3/4Q3/4P3/8/P3B3/5PPP/2q3K1 w - - 0 34","m":"e3c1 d8d1","r":438,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"T1iyz","f":"5rk1/p2rb1pp/2N5/1np5/4p3/1PP5/P4PPP/R1B1R2K w - - 1 19","m":"e1e4 d7d1 e4e1 d1e1","r":559,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"T5vrF","f":"r3r1k1/p4ppp/2p5/1pPp4/3P4/P2qnP2/4RKPP/4R3 b - - 1 31","m":"e3c2 e2e8 a8e8 e1e8","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"T7UIC","f":"7k/ppN2bp1/1n3r1p/8/4r3/1B3P2/PPPR2PP/1K6 w - - 0 24","m":"f3e4 f6f1 d2d1 f1d1","r":544,"t":"backRankMate endgame mate mateIn2 short"},{"i":"T86vL","f":"1r1b2k1/5ppp/5n2/1p1BR3/p7/2P3P1/1P3PP1/R5K1 b - - 0 27","m":"f6d5 e5e8","r":438,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"T8zgN","f":"5r1k/pp1r2pp/5p2/q7/8/1P1PQPP1/P3R2P/1N3K2 b - - 4 26","m":"f8d8 e3e8 d8e8 e2e8","r":597,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"TCCZy","f":"4rQ1k/pp4pp/2qB4/3p4/8/8/P3r1PP/5R1K b - - 5 28","m":"e8f8 f1f8","r":494,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"TFIgp","f":"2kr3r/1pp1b1pp/1p2p3/8/8/8/PPP2PPP/RN2R1K1 w - - 0 15","m":"e1e6 d8d1 e6e1 d1e1","r":414,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TKsJe","f":"2rR2k1/p1q2ppp/1p3b2/2p5/7P/Pb3NP1/1P2QPB1/4R1K1 b - - 0 22","m":"c8d8 e2e8 d8e8 e1e8","r":595,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"TMWX7","f":"7k/6pp/1p3p2/p1pp4/2RNr1P1/5K2/8/8 b - - 0 45","m":"c5d4 c4c8 e4e8 c8e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"TMbSA","f":"r3r1k1/pB2qppp/5b2/8/3P2Q1/1P4B1/P4PPP/2R4K w - - 1 21","m":"b7a8 e7e1 c1e1 e8e1","r":496,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"TNJEc","f":"6k1/1p3ppp/p3p3/8/bP2p3/1BR4P/2Pr1PPK/8 b - - 3 23","m":"a4b3 c3c8 d2d8 c8d8","r":442,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TOuvj","f":"7k/5pbp/6p1/1N2p3/2p1P3/2P5/rPQ2PPP/3R2K1 w - - 0 27","m":"d1a1 a2a1 c2b1 a1b1","r":400,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"TQKNW","f":"2k1r3/ppp3pp/5p2/8/4q3/1Q6/PP1r1RPP/R6K w - - 0 19","m":"f2d2 e4e1 a1e1 e8e1","r":566,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"TSrDu","f":"7k/q5pp/6p1/8/3P2PP/1R6/r2BKP2/7R b - - 0 38","m":"a7a4 b3b8 a4e8 b8e8","r":527,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TTk7q","f":"r1b1r1k1/4q1p1/p1p2p1B/2p5/8/3p2Q1/PPP2PPP/R4RK1 w - - 0 17","m":"f1e1 e7e1 a1e1 e8e1","r":462,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TTrvd","f":"5rk1/3b1p1p/4p1p1/1pp5/3pQ3/1q1P3R/r4PPP/1R4K1 w - - 0 27","m":"b1b3 a2a1 b3b1 a1b1 e4e1 b1e1","r":435,"t":"backRankMate endgame long mate mateIn3"},{"i":"TVrVz","f":"4r1k1/6pp/1Qp5/p3qp2/8/P7/1P3PPP/2R3K1 w - - 0 40","m":"b6c6 e5e1 c1e1 e8e1","r":567,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"TXiR5","f":"2r3k1/5pp1/4p2p/p1q5/8/P3P3/1P1Q1PPP/5RK1 w - - 0 25","m":"f1c1 c5c1 d2c1 c8c1","r":492,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TXmZ5","f":"3rQ2k/pp4pp/2p2r2/5p2/3P3q/1B3P2/PP4PP/3RR1K1 b - - 7 27","m":"d8e8 e1e8 f6f8 e8f8","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TbK2h","f":"3rkb1r/p3pppp/1p6/1Np5/1n2Q3/8/PP2BPPP/R1Bq2K1 w k - 0 15","m":"e2d1 d8d1 e4e1 d1e1","r":495,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TdNID","f":"r1bQ2k1/1q2bppp/p1p1p3/4P3/8/2N5/PPP1BPPP/R2R2K1 b - - 0 16","m":"e7d8 d1d8","r":454,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"TePtz","f":"r2r2k1/pp3p1p/2p3pP/5p2/5P2/1Q2b3/PPP3P1/2KR4 w - - 2 25","m":"c1b1 d8d1","r":414,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"TfBbE","f":"1k6/ppp5/7Q/1P5P/8/8/r5r1/5K2 b - - 1 34","m":"g2h2 h6f8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"TjWbx","f":"4r1k1/pp2q2p/n2p2p1/2pP1p2/2P1rP2/P4N2/1P1Q2PP/1R2R2K w - - 0 21","m":"f3g5 e4e1 b1e1 e7e1 d2e1 e8e1","r":566,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"Tmjtq","f":"8/ppkb3Q/4p1p1/3p1r2/2p5/P2n4/6PP/5qRK w - - 0 29","m":"g1f1 f5f1","r":483,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"TnsiW","f":"k6r/pp4Q1/8/P1p5/2P2p2/1P1PnP2/4KN1q/8 b - - 0 37","m":"h8h3 g7g8","r":562,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"TqtVd","f":"3k1bnr/Qprb1ppp/3p4/8/8/5N2/PP3PPP/R1q3KR w - - 0 15","m":"a1c1 c7c1 f3e1 c1e1","r":488,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Tqu4q","f":"2kr3r/2p2p2/2pq2p1/ppb4p/3PP3/4P3/PPP1Q1P1/1K1R1B1R w - - 0 17","m":"d4c5 d6d1 e2d1 d8d1","r":423,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TrdJX","f":"3q2k1/5pp1/1pp4p/3p4/rp1Pr3/1N3Q2/2P2PPP/R5K1 w - - 0 27","m":"a1a4 e4e1","r":415,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"TsLUZ","f":"k2rr3/pp5p/2n2Qp1/8/2Npq3/5nB1/PPP2PPP/R3R1K1 w - - 14 24","m":"f6f3 e4e1 a1e1 e8e1","r":501,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TuFfD","f":"1r4k1/2p2ppp/1q6/p2nB3/8/P3P3/2QP1PPP/1r3RK1 w - - 0 24","m":"f1b1 b6b1 c2b1 b8b1","r":508,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TuolY","f":"4r1k1/p4ppp/1p6/8/3P4/P3NP1P/1P6/2R3K1 b - - 0 26","m":"e8e3 c1c8 e3e8 c8e8","r":481,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"TxZnc","f":"4k2r/p2ppp1p/2p5/6p1/4P3/1R4P1/Pb1K1PP1/2r2R2 b k - 1 23","m":"c1f1 b3b8","r":440,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Ty057","f":"4B1k1/1p3bbp/5pp1/8/3B1Q2/2P5/5PPP/1rR1q1K1 w - - 1 29","m":"c1e1 b1e1","r":539,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Ty2g7","f":"r3k2r/pp1bpp2/3p4/2pP4/1PP5/1K3P2/1P5P/R4BR1 b kq - 0 19","m":"h8h2 g1g8","r":522,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"U3PGh","f":"r2r2k1/3R1ppp/5b2/p3N1P1/5P2/4B2P/q7/3Q2K1 b - - 0 31","m":"f6e5 d7d8 a8d8 d1d8","r":536,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"U4ROH","f":"7k/5p2/5r1p/8/5q2/2P3R1/6PP/1Q5K w - - 1 54","m":"b1e1 f4f1 e1f1 f6f1","r":531,"t":"backRankMate endgame mate mateIn2 short"},{"i":"U5pK3","f":"2r1r1k1/pp5p/3p1bp1/2n2N2/P1P5/6Q1/PB3PPP/1R2q1K1 w - - 0 22","m":"b1e1 e8e1","r":509,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"U95Xa","f":"3qr1k1/pp3ppp/5b2/8/3p2R1/1B1P3Q/PP1B1PPP/2r3K1 w - - 5 21","m":"d2c1 e8e1","r":479,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"U9a4n","f":"6k1/3r1ppp/1P6/8/B7/6P1/3r3P/2R3K1 b - - 2 42","m":"d7b7 c1c8 d2d8 c8d8","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UBRJ2","f":"r1r2Q1k/6pp/8/p7/3pq3/2P3PP/PP3R2/5RK1 b - - 2 31","m":"c8f8 f2f8 a8f8 f1f8","r":483,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"UEFjd","f":"1q4k1/2p2pp1/p1r4p/3p4/Q2P3B/2n1P3/P4PPP/6K1 w - - 0 23","m":"a4c6 b8b1","r":520,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"UESRu","f":"8/4bk1p/R7/1pP2p2/1P6/P7/r4PPP/3R2K1 w - - 0 33","m":"d1d7 a2a1 d7d1 a1d1","r":541,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UFUSB","f":"1Q4k1/2r2ppp/p1n5/q3p3/2p5/P3P1P1/1P1R1PKP/R7 b - - 1 23","m":"c6b8 d2d8","r":482,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ULog4","f":"5r1k/p5pp/1p6/2p3q1/8/1P1P1Q1P/P5P1/3RR1K1 b - - 0 35","m":"f8f3 e1e8 f3f8 e8f8","r":465,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"UPzrP","f":"5r1k/1p4p1/p2p1q1p/2pP4/2PbP3/PPNQ4/1B4PP/5RK1 w - - 2 40","m":"g1h1 f6f1 d3f1 f8f1","r":448,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"UQaM9","f":"4k2r/3rbpp1/p6p/1p6/4n3/8/PP3PPP/R1B1R1K1 w k - 0 20","m":"e1e4 d7d1 e4e1 d1e1","r":442,"t":"backRankMate endgame mate mateIn2 short"},{"i":"USOVb","f":"5rk1/1p4pp/p7/4Q3/8/1P1B4/1PP3PP/5q1K w - - 3 24","m":"d3f1 f8f1","r":482,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"USyzY","f":"4rrk1/p3qppp/1p1n4/2pPN3/5Q2/7R/P1P2PPP/3R2K1 w - - 5 29","m":"e5g4 e7e1 d1e1 e8e1","r":568,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"UVZSq","f":"3r2k1/p4pp1/7p/2B5/1P2b3/8/P1P2PPP/4R1K1 w - - 0 29","m":"e1e4 d8d1 e4e1 d1e1","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UYtmV","f":"2r2k2/2r1pp1p/p4bp1/1p1RP3/7P/P1PR2P1/1PK5/8 b - - 0 27","m":"f6g7 d5d8 c8d8 d3d8","r":462,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UZpY7","f":"r6k/pp4pp/2ppB3/5R2/3r3q/3Q3P/PPP3P1/5RK1 b - - 1 22","m":"d4d3 f5f8 a8f8 f1f8","r":550,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UloG4","f":"q2Q2k1/5ppb/2p2p1p/2P1nP2/6P1/7P/3R2K1/1R6 b - - 0 39","m":"a8d8 d2d8","r":447,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"UtsFv","f":"r1br2k1/pp3ppp/n3p3/2n5/2P5/PN2PN2/1P2BKPP/1R1R4 b - - 4 18","m":"c5b3 d1d8","r":405,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Uuv2O","f":"r5k1/2R2ppp/r1p1p3/3B4/1p6/3P2P1/P3PP1P/2R3K1 b - - 0 28","m":"c6d5 c7c8 a8c8 c1c8","r":431,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"UvTzJ","f":"5r1k/6pp/8/1p3P2/8/1r2p3/R5PP/4R1K1 b - - 1 28","m":"f8f5 a2a8 f5f8 a8f8","r":542,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"UvxLG","f":"4r2k/p1pn2pp/1p1p4/5r2/8/2P4R/P1P3PP/5R1K w - - 0 23","m":"f1f5 e8e1 f5f1 e1f1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"V02AO","f":"1k6/ppn2p2/6p1/2Pp3p/4RP2/1q6/1B1RKP2/8 b - - 0 36","m":"d5e4 d2d8","r":513,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"V0Y8j","f":"4r2k/pp2Q1pp/8/3R4/2p2P2/3n4/PP4PP/6K1 b - - 0 24","m":"e8e7 d5d8 e7e8 d8e8","r":415,"t":"backRankMate endgame mate mateIn2 short"},{"i":"V1hZv","f":"r1Q3k1/5ppp/1p1p4/p3r3/8/2R5/PPP2PqP/2KR4 b - - 1 24","m":"a8c8 c3c8 e5e8 c8e8","r":514,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"VJNIt","f":"2r3k1/5ppp/4pn2/8/2Q5/7P/5PP1/1R4K1 b - - 0 27","m":"c8c4 b1b8 c4c8 b8c8 f6e8 c8e8","r":588,"t":"backRankMate endgame long mate mateIn3"},{"i":"VKxQI","f":"4rrk1/pBp2ppp/2N5/6n1/8/2P5/PPR2PPP/5RK1 w - - 1 16","m":"f1e1 e8e1","r":503,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"VLSPU","f":"3qr2k/5ppp/p2p3r/1p1Pp1b1/5P2/1PP1Q3/P4BPP/2R1R1K1 b - - 0 26","m":"e5f4 e3e8 d8e8 e1e8","r":439,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"VPcak","f":"8/2r4k/4q1pp/p4p2/P7/8/1P3PPP/4Q1K1 w - - 0 35","m":"e1e6 c7c1 e6e1 c1e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"VQ8RB","f":"4r1k1/1b2r2p/p2Q1qp1/1p1p1p2/3p4/P5R1/5PPP/3R2K1 w - - 0 34","m":"d6f6 e7e1 d1e1 e8e1","r":526,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VQPwD","f":"3r1k1r/pp4pp/5n2/2b1N3/Q7/8/PPP2PPP/1K1qR3 w - - 4 23","m":"e1d1 d8d1","r":448,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"VVeb6","f":"rn5k/2Q1q1pp/p1p2r2/2P1p3/4P3/P1BR1bP1/5PBP/3R2K1 b - - 0 22","m":"e7c7 d3d8 c7d8 d1d8 f6f8 d8f8","r":502,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"VWsYp","f":"r1b5/pp1n3N/6qp/2k1r3/2B5/1P3P2/P5PP/1Q5K w - - 3 29","m":"b1g6 e5e1 c4f1 e1f1","r":427,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"VaQR6","f":"1r2r1k1/p1p3bp/6p1/3p4/8/8/PPP2PPP/1RB1R1K1 w - - 0 18","m":"c2c3 e8e1","r":599,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"ViX2a","f":"4r1k1/pp2q2n/2p5/3p2p1/6R1/1QB5/PPP5/1K2r1R1 w - - 4 28","m":"c3e1 e7e1 g1e1 e8e1","r":433,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Vj9kU","f":"r1br2k1/pp3ppp/1q6/2pQ4/5B2/6P1/PP3PBP/R3R1K1 b - - 0 18","m":"d8d5 e1e8","r":406,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"VkUTn","f":"7k/p3r1pp/3q4/8/8/6PP/6PK/1R6 b - - 3 42","m":"d6f6 b1b8 e7e8 b8e8 f6f8 e8f8","r":446,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"VnBuZ","f":"5rk1/1bp4p/p1n1p3/1p1p4/6pN/8/PPB3PP/3Q1q1K w - - 3 26","m":"d1f1 f8f1","r":566,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Vp1oP","f":"7k/5rp1/2p4p/1pp5/4P3/1P1P4/rPP3PP/5R1K w - - 0 31","m":"f1f7 a2a1 f7f1 a1f1","r":485,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Vpc6L","f":"k2R2rr/pp6/2pQ2n1/4p3/1P6/2P1N1P1/q6P/3R2K1 b - - 3 31","m":"g8d8 d6d8 h8d8 d1d8","r":503,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"VqZZn","f":"r5k1/5ppp/3bp3/8/1p1PpP2/4P3/1B1Q2PP/q6K w - - 0 27","m":"b2a1 a8a1 d2c1 a1c1","r":546,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VvBC8","f":"r3r1k1/ppp2ppB/3p4/8/PPn3Pq/4Q2P/5P2/4RRK1 b - - 0 22","m":"h4h7 e3e8 a8e8 e1e8","r":486,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"VzWmI","f":"2n1rk1r/p4ppp/2Rp4/1P6/2Pp1P2/q2B4/2Q3PP/R6K w - - 11 29","m":"a1a3 e8e1 d3f1 e1f1","r":470,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"W0MVa","f":"2q3k1/4nppp/8/3pn3/RP6/1Q3N2/5PPP/6K1 w - - 0 28","m":"f3e5 c8c1 b3d1 c1d1","r":402,"t":"backRankMate endgame mate mateIn2 short"},{"i":"W0ibi","f":"3r2k1/5ppp/8/2Q5/8/5N2/1P3PPP/2Rq2K1 w - - 2 30","m":"c1d1 d8d1 f3e1 d1e1","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"W2tah","f":"1r2r1k1/1p2qppp/8/p2p4/3Q4/P4B2/1R3PPP/1R4K1 w - - 3 22","m":"f3d5 e7e1 b1e1 e8e1","r":411,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"W5Xeh","f":"r2q1rk1/pppn4/4p2p/2b1p1p1/4P3/3P2B1/PPP3PP/RN1Q1R1K w - - 2 14","m":"d1h5 f8f1","r":579,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"W5s3L","f":"8/1p4kp/1N2p1p1/5p2/P2r4/8/5PPP/4R1K1 w - - 0 28","m":"e1e6 d4d1 e6e1 d1e1","r":438,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WJu6P","f":"6k1/pp3ppp/8/4p3/3r4/4K1P1/PP3PP1/2R5 b - - 1 22","m":"d4d7 c1c8 d7d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"WKPIF","f":"R4rk1/2q2ppp/2b1p3/3p4/2pPn3/2P1PNP1/Q4PP1/R2B2K1 b - - 0 23","m":"f8a8 a2a8 c6a8 a1a8 c7b8 a8b8","r":503,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"WO0wf","f":"r7/5pkp/4p1p1/4P3/2P2P2/8/Rp4PP/7K w - - 0 33","m":"a2b2 a8a1 b2b1 a1b1","r":413,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"WWN4y","f":"rnbr1Q1k/pp4pp/1qp5/4P3/2BN4/B1n5/P1P3PP/R4RK1 b - - 2 15","m":"d8f8 f1f8","r":521,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"WXVSg","f":"r4rk1/3b2b1/p1pR3p/2P1p1p1/QP6/P7/6PP/3R1q1K w - - 2 37","m":"d1f1 f8f1","r":462,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"WXzYI","f":"3q2k1/pp3p1p/3rn2Q/6p1/8/4P3/PPR2PPP/5RK1 w - - 4 25","m":"f1c1 d6d1 c1d1 d8d1","r":405,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WeA9s","f":"r5k1/ppp2rp1/3b3p/4R2Q/6b1/2NP4/PPPB2PP/R4q1K w - - 1 18","m":"a1f1 f7f1","r":530,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"WeLkG","f":"6k1/5ppp/p3p3/5P2/3rn1PK/2p5/7P/1R6 b - - 1 34","m":"c3c2 b1b8 d4d8 b8d8","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WjzGY","f":"4q3/pp3pp1/5k1p/3r4/2N5/1P6/P4PPP/1B2R1K1 w - - 0 30","m":"e1e8 d5d1 e8e1 d1e1","r":480,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"Wl41U","f":"3rQ2k/6pp/1p4q1/p3R3/2P5/1PPr4/P4PPP/4R1K1 b - - 6 25","m":"d8e8 e5e8 g6e8 e1e8","r":499,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Wm2n4","f":"2kr3r/p1p2ppp/2p1bb2/8/3NR3/2P5/P1P2PPP/R1B3K1 w - - 3 14","m":"d4e6 d8d1 e4e1 d1e1","r":533,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"WpCv8","f":"4r2k/1p2r1pp/1p1p2n1/p2P4/4N3/P6R/1PP2PPP/R5K1 w - - 0 25","m":"e4d6 e7e1 a1e1 e8e1","r":445,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Wq6V1","f":"1k6/pppr2p1/3p1p2/1Pb5/7R/3r4/5PPK/5R2 b - - 0 36","m":"d6d5 h4h8 c5f8 h8f8 d7d8 f8d8","r":549,"t":"backRankMate endgame long mate mateIn3"},{"i":"WqtSc","f":"4Q3/8/4p3/4kp2/2p5/8/3q2PP/R6K w - - 6 46","m":"a1a6 d2c1","r":461,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"X1iOR","f":"8/p1r1kppp/b3p3/3pP3/3n4/1P3N2/P2R1PPP/6K1 w - - 0 23","m":"f3d4 c7c1 d2d1 c1d1","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"X8J6W","f":"4r1k1/pbB2ppp/1p6/3P4/2P5/2Q5/P5PP/4q2K w - - 0 27","m":"c3e1 e8e1","r":475,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"X8irK","f":"1nrQ2k1/pq3ppp/1p6/8/4RN2/6P1/PP3P1P/4R1K1 b - - 0 26","m":"c8d8 e4e8 d8e8 e1e8","r":424,"t":"backRankMate endgame mate mateIn2 short"},{"i":"X9DNA","f":"1r6/5pk1/4p1p1/4P2p/3B4/5N2/3P1PPP/2R3K1 w - - 3 37","m":"c1c7 b8b1 c7c1 b1c1 f3e1 c1e1","r":476,"t":"backRankMate endgame long mate mateIn3"},{"i":"XBUmV","f":"b6k/2p3pp/8/1p2r3/4P3/1NPn2P1/1P5P/3R2K1 b - - 0 28","m":"d3b2 d1d8 e5e8 d8e8","r":546,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"XETOL","f":"r2Q1k1r/ppB1ppb1/2p3p1/2q4p/6nP/2N2N2/PPP2PP1/2KR1B1R b - - 4 15","m":"a8d8 d1d8","r":532,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"XI4PV","f":"k3rr2/p4p1p/1p3Rp1/1PB5/2P5/2N5/P5PP/7K w - - 0 25","m":"c5f8 e8e1 f6f1 e1f1","r":441,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XLyjS","f":"4r1k1/2pp1ppp/b1pn4/p7/P1P3Q1/1B6/1qP2PPP/1R4K1 w - - 0 18","m":"b1b2 e8e1","r":534,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"XOcEa","f":"5r1k/6pp/N1r5/8/P7/1P3P2/5RPP/7K w - - 0 43","m":"a6b4 c6c1 f2f1 c1f1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XPFTt","f":"r3r1k1/p1p2p1b/2p1qn1p/2P1N1p1/3P4/2N2Q2/PP3PPP/R3R1K1 w - - 5 20","m":"e5c6 e6e1 a1e1 e8e1","r":408,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"XQX2G","f":"2r3k1/5ppp/4p3/3pP1P1/1P6/2Q5/6P1/R5K1 b - - 0 29","m":"c8c3 a1a8 c3c8 a8c8","r":505,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XR7AC","f":"8/7p/4Q1pk/p7/q1p5/P5R1/6PP/7K w - - 8 44","m":"e6e7 a4d1 e7e1 d1e1","r":428,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XTPnb","f":"3r4/R2Pkpp1/4p2p/1r6/8/8/5PPP/2R3K1 w - - 4 35","m":"c1c7 b5b1 c7c1 b1c1","r":427,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XVjwX","f":"1k3r2/ppp4p/3pR1p1/8/3P2P1/8/PPP2r1P/1K2R3 b - - 0 24","m":"f2h2 e6e8 f8e8 e1e8","r":422,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XYJto","f":"4r3/5pkp/p4n2/1p6/2p2P2/P1N4q/BPPb4/1K3Q2 w - - 0 28","m":"f1h3 e8e1 c3d1 e1d1","r":522,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XhBH9","f":"1rb2rk1/pp2Rppp/2p5/8/2PP4/6P1/P4PBP/1R4K1 b - - 4 29","m":"f8e8 e7e8","r":596,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"Xm1UI","f":"5Q1k/6pp/p7/1p6/8/1P2N2P/P2pqrP1/5RK1 b - - 0 28","m":"f2f8 f1f8","r":421,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"XoKoR","f":"6k1/pp3pp1/7p/8/4n3/2P5/PP1r1PPP/4R1K1 w - - 0 26","m":"e1e4 d2d1 e4e1 d1e1","r":568,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XtPJk","f":"r3r1k1/pp2qpp1/1np2n1p/3p4/4P3/1P1R1B2/PBR2PPP/3Q2K1 w - - 0 22","m":"e4d5 e7e1 d1e1 e8e1","r":504,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"XvBPK","f":"6k1/5ppp/R3b3/8/6PP/1Pp4K/P2r4/8 b - - 0 34","m":"c3c2 a6a8 e6c8 a8c8 d2d8 c8d8","r":420,"t":"backRankMate endgame long mate mateIn3"},{"i":"XwEUW","f":"3r2k1/p7/6pp/Q4p2/4p3/1PN5/5PPP/3q2K1 w - - 5 31","m":"c3d1 d8d1 a5e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YAK9K","f":"4r1k1/pp3ppp/2p1r3/8/3pq3/1Q2B3/P4PPP/2R1R1K1 w - - 0 23","m":"e3d2 e4e1 d2e1 e6e1 c1e1 e8e1","r":574,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"YClDw","f":"5r1k/p1r3pp/1p1R4/4p3/8/PP4P1/2P2P1P/2K4R b - - 0 27","m":"f8f2 d6d8 f2f8 d8f8","r":428,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"YEGds","f":"8/1R6/p4k1p/6p1/8/2PB4/PP1r2PP/7K w - - 1 39","m":"d3a6 d2d1 a6f1 d1f1","r":478,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YMvC6","f":"3br1k1/3q1npp/p2p4/1p1P2PP/5P2/P6Q/1PP5/2KRR3 b - - 2 29","m":"d7h3 e1e8","r":472,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"YPvgR","f":"1r1r2k1/2q2ppp/6b1/p2B4/Npp5/8/1P2QPPP/R3R1K1 b - - 0 23","m":"d8d5 e2e8 b8e8 e1e8","r":554,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"YQVEk","f":"6k1/pp3ppp/8/6N1/3P4/P1rnPQqP/1r4P1/R4RK1 b - - 9 25","m":"g3g5 f3f7 g8h8 f7e8","r":512,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"YWLDt","f":"Q6k/6pp/p7/1q1Pp3/Np6/1P5P/P1r3B1/6K1 b - - 4 28","m":"b5e8 a8e8","r":423,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"YccQr","f":"3k3r/1p1r1ppp/B1Q1p3/5b2/5B2/P4N2/5PPP/6K1 w - - 1 20","m":"a6b7 d7d1 f3e1 d1e1","r":400,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"YeAOZ","f":"1nq1kb2/2pppp2/7r/7p/2P3p1/1R1P2P1/2P1PP1P/3K2NR b - - 0 18","m":"c8a6 b3b8 a6c8 b8c8","r":475,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"YgnVs","f":"4r3/p1p2pkp/b1p5/5p2/8/NP6/P1P1rPPP/2RR2K1 w - - 0 20","m":"d1d7 e2e1 c1e1 e8e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Yjn91","f":"r3r2k/p7/5q1p/2p5/6Q1/6P1/P5PP/5R1K w - - 0 26","m":"f1f6 e8e1 f6f1 e1f1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"YkSDl","f":"2b5/p5kp/3q2p1/4p3/3N4/P1Q5/1P4PP/7K w - - 0 33","m":"d4b5 d6d1 c3e1 d1e1","r":458,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YmjOQ","f":"2r3k1/5ppp/r1N1p3/pR1p4/P7/2P1PPK1/6PP/2R5 b - - 0 26","m":"c8c6 b5b8 c6c8 b8c8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"YnSvq","f":"3Q1k1r/B3nppp/p1n1p3/1p2P3/4q3/5N2/PP3PPP/3R2K1 b - - 2 20","m":"c6d8 d1d8","r":423,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Yplgn","f":"r1b4k/1p4pp/5nq1/p7/8/1B1Q4/PP4PP/4RR1K b - - 0 23","m":"g6d3 e1e8 f6e8 f1f8","r":584,"t":"backRankMate master mate mateIn2 middlegame sacrifice short"},{"i":"Yq31o","f":"6k1/1p1bpp1p/p5p1/3PR3/1P1Q4/8/P4PPP/2r3K1 w - - 1 27","m":"e5e1 c1e1","r":456,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"Yre7E","f":"1k1Q3r/ppp2p1p/4p1pb/2q5/2B1PP2/6PP/PPP5/1K1R4 b - - 3 21","m":"h8d8 d1d8","r":468,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Yrfm3","f":"4rQ1k/1b4pp/2q5/p7/1p6/4N3/PPP1r1PP/R1B2RK1 b - - 2 22","m":"e8f8 f1f8","r":455,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"YswAv","f":"8/4k2p/2p3p1/prP2p2/1P1Rp3/4P3/5PPP/6K1 w - - 0 31","m":"b4a5 b5b1 d4d1 b1d1","r":458,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"YuSea","f":"b4r1k/4R1pp/p7/1p3Q2/8/5P1P/6P1/7K b - - 0 38","m":"f8f5 e7e8 f5f8 e8f8","r":546,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"YwS3L","f":"1R3rk1/p4ppp/5b2/q7/8/8/P1b1QPPP/4R1K1 b - - 1 23","m":"f8b8 e2e8 b8e8 e1e8","r":477,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"YyqPH","f":"r1b4k/pp1p2pp/2p2q2/3Q4/3P4/5P2/P3RP1P/R1B4K b - - 0 18","m":"c6d5 e2e8 f6f8 e8f8","r":457,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Z0ZVt","f":"7k/p5pp/1p6/8/8/5r2/PPPq2PP/1K1R4 w - - 0 23","m":"d1d2 f3f1 d2d1 f1d1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Z0y3y","f":"3r1rk1/p1B3pp/4p3/8/8/8/PPP3PP/R3b2K w - - 0 18","m":"c7d8 f8f1","r":535,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Z86rG","f":"2kr1b1r/1pp3pp/p1p1p3/8/4Q3/4B3/P1P1NPPP/2q3K1 w - - 0 18","m":"e3c1 d8d1","r":417,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ZCwYx","f":"4Rbk1/p1B2ppp/2p5/8/2P5/1P6/r4PPP/6K1 w - - 2 21","m":"c7d6 a2a1 e8e1 a1e1","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZDwhV","f":"6k1/5ppp/8/3pr3/nP6/R7/6PP/7K b - - 1 29","m":"a4c3 a3a8 e5e8 a8e8","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZHEuW","f":"8/Rr3p1k/4pP2/5p1p/p7/1r6/5PPP/R5K1 w - - 0 38","m":"a7a4 b3b1 a1b1 b7b1","r":533,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ZI7fX","f":"1r1Q2k1/p4ppp/6q1/8/4R3/1PP2P2/P5PP/4R1K1 b - - 0 22","m":"b8d8 e4e8 d8e8 e1e8","r":410,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"ZIbH5","f":"1r4k1/2p2ppp/p7/1p6/3nR3/PB3P2/1P3qPP/4R2K b - - 8 27","m":"d4b3 e4e8 b8e8 e1e8","r":497,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZIgpI","f":"6k1/1p2Rp1p/p5p1/3b4/3r4/1B6/PP3PPP/6K1 w - - 1 26","m":"b3d5 d4d1 e7e1 d1e1","r":462,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"ZJLsR","f":"r5k1/pp3ppp/2p3r1/3p4/3q3P/1P2Q1n1/P1PN1K2/RN2R3 b - - 3 21","m":"d4a1 e3e8 a8e8 e1e8","r":548,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"ZKGxn","f":"2r2rk1/5R1p/p4Qp1/3p4/1p4P1/1B6/PP5P/K4b2 w - - 0 31","m":"b3d5 c8c1","r":449,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ZKRaB","f":"6k1/2p2ppp/p7/3n4/1PpBp3/P1Pr4/5PPP/4R1K1 w - - 3 22","m":"e1e4 d3d1 e4e1 d1e1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZKs9J","f":"3r2k1/p3qpp1/7p/2P5/8/P1P5/1P3PPP/4R1K1 w - - 0 24","m":"e1e7 d8d1 e7e1 d1e1","r":483,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ZNosU","f":"6k1/1p1q1ppp/8/1Q1p4/3P4/4P3/5PPP/2R3K1 b - - 0 28","m":"d7b5 c1c8 b5e8 c8e8","r":418,"t":"backRankMate endgame master mate mateIn2 queenRookEndgame short"},{"i":"ZUZr1","f":"2n4r/3kbQ2/2n1p3/R2pP2p/2pP3B/1qP1N3/1P3PPP/6K1 w - - 1 29","m":"e3d5 b3d1","r":591,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ZZpNN","f":"2kr1b1r/ppp2p1p/5p2/3q4/8/8/PQB1NPPP/4RK1R w - - 0 20","m":"e1d1 d5d1 c2d1 d8d1","r":559,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Zb0qv","f":"6k1/5ppp/1q6/3p2PP/3pn3/2p4Q/B1P2P2/6K1 b - - 0 35","m":"d4d3 h3c8 b6d8 c8d8","r":564,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZcK0I","f":"4n2k/Rp1R1Bb1/6pp/8/4p3/4P1B1/2r1nPPP/7K w - - 0 26","m":"f7e8 c2c1 d7d1 c1d1","r":508,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZdmgB","f":"4r1k1/pp3ppp/8/3R4/8/8/PP4PP/6K1 b - - 0 28","m":"e8e2 d5d8 e2e8 d8e8","r":476,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Zf7yM","f":"1k1r4/1p1rp3/p6p/4R3/5pp1/1P6/P4PPP/R4KN1 w - - 0 26","m":"g1e2 d7d1 a1d1 d8d1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZgOLM","f":"2Q5/5pk1/4p1pp/4P3/5q2/8/1r4PP/5R1K w - - 0 32","m":"f1f4 b2b1 c8c1 b1c1 f4f1 c1f1","r":449,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"ZkdG4","f":"k4b1r/pp2q3/4Pp2/1Np1n1pp/3r4/6Q1/PPP2PPP/R1B1R1K1 w - - 6 22","m":"e1e5 d4d1 e5e1 d1e1","r":426,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZmStx","f":"2r5/1b1Rbk2/p4nr1/8/3P4/1P3QB1/5PPP/6K1 w - - 3 32","m":"d7b7 c8c1 f3d1 c1d1","r":439,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZnOR9","f":"5rk1/1p4pp/p7/8/3q4/P7/1PP2rPP/3RR2K w - - 0 28","m":"d1d4 f2f1 e1f1 f8f1","r":495,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Zpg7m","f":"k7/pp6/6R1/2b3p1/8/7P/PP3PPK/4r3 b - - 4 41","m":"c5f2 g6g8 e1e8 g8e8","r":410,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"ZyH9r","f":"r1b1k2r/pp2ppbp/6p1/1B2n3/5B2/8/PP3PPP/RN1R2K1 b kq - 1 13","m":"e8f8 d1d8","r":487,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ZzEZ8","f":"rnbq1Q1k/ppp3pp/8/3pp3/3P4/P1PP4/6PP/R4RK1 b - - 3 16","m":"d8f8 f1f8","r":437,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"a0Kqa","f":"1k6/pppr4/3p1R2/6p1/2PP4/1P2P1K1/P7/8 b - - 0 34","m":"d7e7 f6f8 e7e8 f8e8","r":426,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"a0ypl","f":"2Q3k1/ppp2ppp/1b3q2/8/3p1B2/3P1BPP/PP3P2/4n1K1 b - - 1 19","m":"f6d8 c8d8","r":413,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"a45tB","f":"6k1/R4ppp/p3pb2/1p6/1Pr5/P4P1P/5BPK/2q5 b - - 5 28","m":"c1a3 a7a8 c4c8 a8c8 f6d8 c8d8","r":495,"t":"backRankMate endgame long mate mateIn3"},{"i":"a6SPk","f":"3r2k1/3N1ppp/R1p5/1p6/1p1P1P2/1Pn1PK1P/5P2/8 b - - 3 31","m":"d8d7 a6a8 d7d8 a8d8","r":575,"t":"backRankMate endgame mate mateIn2 short"},{"i":"a81Sr","f":"2Q4k/1p4pp/pq2r3/5p2/8/PB4b1/1P3PP1/5RK1 b - - 0 27","m":"e6e8 c8e8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"a9klu","f":"1QR2qk1/5ppp/8/p7/8/7P/P4PP1/6K1 b - - 1 30","m":"f8c8 b8c8","r":407,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove queenEndgame"},{"i":"a9rFp","f":"r5k1/1pp2rpp/3ppq2/p3p3/P1n1P3/2N2Q1n/2P2PPP/RRN3K1 w - - 4 21","m":"f3h3 f6f2 g1h1 f2e1","r":550,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"aDwHZ","f":"6k1/p4ppp/1p6/2pp2q1/6P1/3P2Q1/PP2rPP1/R5K1 b - - 0 19","m":"e2b2 g3b8 g5d8 b8d8","r":561,"t":"backRankMate endgame mate mateIn2 short"},{"i":"aEsLQ","f":"Q2r3k/p5pp/3p3q/6p1/3P1R2/2P2R1P/PP3PP1/6K1 b - - 0 26","m":"d8a8 f4f8 a8f8 f3f8","r":442,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"aFn6B","f":"8/r5pp/1N6/2k1pp2/1Rp5/2P1P3/5PPP/6K1 w - - 12 30","m":"b6c4 a7a1 b4b1 a1b1","r":453,"t":"backRankMate endgame mate mateIn2 short"},{"i":"aJuLj","f":"r3Q1kr/1pp2ppp/pq6/n2P4/6b1/5N2/PPP2PPP/RN2R1K1 b - - 2 17","m":"a8e8 e1e8","r":400,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"aQuju","f":"6k1/ppp2ppp/2n5/4Rn2/8/3r4/P1PQ1PPP/6K1 b - - 0 21","m":"d3d2 e5e8","r":526,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"aRRLA","f":"2Q5/p1p2bk1/3r3p/Np4p1/5p2/1P6/5PPP/R2q2K1 w - - 6 38","m":"a1d1 d6d1","r":422,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"aXUxR","f":"r1b1r1k1/pp1nq2p/3p2pQ/3P2N1/8/1P6/P4PPP/RNb2RK1 w - - 0 19","m":"f1c1 e7e1 c1e1 e8e1","r":404,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"aXxwa","f":"2r3k1/5ppp/R3p3/1p1p4/p2P4/3bPP2/5KPP/N7 b - - 3 28","m":"c8c1 a6a8 c1c8 a8c8","r":490,"t":"backRankMate endgame mate mateIn2 short"},{"i":"aZiND","f":"2Q4k/p3B1pp/2p5/q3P3/3Pp1b1/4P3/PP4PP/5RK1 b - - 0 21","m":"g4c8 f1f8","r":456,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"aaDIV","f":"7k/pq4pp/1p1b4/2p1n3/2Pp4/3P2B1/PP3PPP/R3R1K1 b - - 1 22","m":"e5f7 e1e8 d6f8 e8f8","r":506,"t":"backRankMate endgame mate mateIn2 short"},{"i":"alElO","f":"2N1r1k1/1p3ppp/n7/q2pP3/8/5P1P/6P1/2R3K1 b - - 2 27","m":"e8c8 c1c8 a5d8 c8d8","r":596,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"aqwvw","f":"8/1R4bk/3p2pp/P7/1P1r1p2/6N1/5PPP/5K2 w - - 0 39","m":"g3e2 d4d1","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ar72y","f":"r6k/ppp1n1pp/6r1/6q1/3PQ3/2P5/PP3PB1/4RRK1 b - - 3 21","m":"e7f5 e4e8 a8e8 e1e8","r":526,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"awyrc","f":"r3r1k1/p1p2ppp/2p5/1p2qb2/4P3/2P5/PPQ2PPP/3RR1K1 w - - 0 20","m":"e4f5 e5e1 d1e1 e8e1","r":486,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ayRav","f":"2rr2k1/3NQpp1/3P3p/pp6/1n6/7P/3q1PPB/3R2K1 w - - 0 30","m":"d1d2 c8c1 d2d1 c1d1 e7e1 d1e1","r":439,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"b06rX","f":"2r3k1/3n1p1p/1pq1p1p1/p3P3/8/1Q2B3/PP3PPP/2rR2K1 w - - 0 22","m":"d1c1 c6c1 e3c1 c8c1 b3d1 c1d1","r":484,"t":"backRankMate endgame long mate mateIn3"},{"i":"b3PeA","f":"7k/1pp2rpp/1P6/4p3/2R5/4P3/5PPP/6K1 b - - 0 28","m":"c7b6 c4c8 f7f8 c8f8","r":559,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"b3o1M","f":"3r1bk1/1Q4pp/5p2/8/8/Pb2B3/1P3PPP/2Rq2K1 w - - 1 26","m":"c1d1 d8d1","r":534,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"b7vJx","f":"2kr2n1/pp1q1p1Q/6p1/8/5B2/N7/P1P2PPP/b4RK1 w - - 0 18","m":"f1a1 d7d1 a1d1 d8d1","r":572,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"bC5ME","f":"3r1rk1/pb3ppp/5b2/1N5q/2p5/2P2N2/P3QPPP/1R2R1K1 b - - 11 22","m":"f8e8 e2e8 d8e8 e1e8","r":552,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"bCEPV","f":"2r3k1/p2R1ppp/1br1p3/8/p7/P3B1P1/1P2PP1P/3R2K1 b - - 5 24","m":"b6e3 d7d8 c8d8 d1d8","r":573,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"bCT2G","f":"8/6k1/3b2p1/7p/1P3r2/8/6PP/3R3K w - - 0 37","m":"d1d6 f4f1","r":405,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"bEHP1","f":"r1b1r1k1/p4p2/2p1q2p/3p2p1/3P1RnB/2NR4/PPQ1B1PP/7K w - - 0 20","m":"e2g4 e6e1 h4e1 e8e1 f4f1 e1f1","r":586,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"bEzhj","f":"3rk1r1/ppp1bpPp/2n1b3/6B1/2p5/5N2/Pp2QPPP/RN4K1 w - - 0 14","m":"e2b2 d8d1 f3e1 d1e1","r":425,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"bJkmf","f":"r2r4/1p2k2p/1p2ppn1/1P2p3/2P1P3/5N2/5PPP/R2R2K1 w - - 1 21","m":"a1a8 d8d1 f3e1 d1e1","r":550,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"bL5OI","f":"2r5/8/4Rp1p/p7/kp1R4/2P5/PP3PPP/6K1 w - - 0 26","m":"c3b4 c8c1 d4d1 c1d1 e6e1 d1e1","r":537,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"bRuNj","f":"6k1/5ppp/p3p3/2Q5/8/Pq2P3/5PPP/R2r2K1 w - - 1 31","m":"a1d1 b3d1","r":498,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"bTkFT","f":"4k3/5ppp/4p3/4P3/r2R4/8/3p1PPP/6K1 w - - 0 35","m":"d4d2 a4a1 d2d1 a1d1","r":437,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"bUFqp","f":"3r2k1/pp3ppp/2p2q2/8/5PP1/4Q2P/PPP5/1K2R3 b - - 4 24","m":"b7b6 e3e8 d8e8 e1e8","r":536,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"bXgyq","f":"5r1k/pp4pp/2p1Q3/3pP1b1/1PN5/P7/6PP/2R2q1K w - - 2 33","m":"c1f1 f8f1","r":465,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"bdgLf","f":"2kr4/p1pr1pp1/4p3/4P2p/2P1b3/P1R2B2/5PPP/R5K1 w - - 1 23","m":"f3e4 d7d1 a1d1 d8d1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bfwX9","f":"2r3k1/5ppp/8/2R5/R2p4/P6P/1P1r1PPK/8 b - - 0 31","m":"c8c5 a4a8 c5c8 a8c8","r":471,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"bg1os","f":"r1b1Q1k1/p1q2ppp/2p2n2/1B1p4/2pP4/8/PPP2PPP/RNB1R1K1 b - - 0 13","m":"f6e8 e1e8","r":462,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"bgj2B","f":"r4k2/N1n1bppp/4p3/1pPp4/1P1P4/1P2P3/3RNPPP/6K1 w - - 1 22","m":"a7c6 a8a1 e2c1 a1c1 d2d1 c1d1","r":540,"t":"backRankMate endgame long mate mateIn3"},{"i":"bk1AB","f":"6k1/Qp3ppp/2p5/4P3/4pPP1/P5KP/1P1q4/8 b - - 2 26","m":"d2b2 a7a8","r":439,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"bkyet","f":"3r2k1/5ppp/4p3/8/3Rn3/5r1P/P5P1/1R4K1 b - - 0 31","m":"d8d4 b1b8 d4d8 b8d8","r":474,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bpoNJ","f":"3r2k1/p4ppp/4p3/2p1P3/2P2PPb/1P1p1q1P/P2QR2K/2BR4 b - - 0 34","m":"d3e2 d2d8 h4d8 d1d8","r":476,"t":"backRankMate endgame mate mateIn2 short"},{"i":"br38O","f":"rn4k1/1p3ppp/p4q2/3pr3/6Q1/1N6/PPP2PPP/R4RK1 b - - 1 16","m":"e5g5 g4c8 f6d8 c8d8","r":532,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"btuld","f":"3r2k1/2p3p1/1p2pb1p/p7/4Q3/P1P1N3/1P4PP/3q3K w - - 0 28","m":"e3d1 d8d1 e4e1 d1e1","r":403,"t":"backRankMate endgame mate mateIn2 short"},{"i":"buMDv","f":"2Q1b3/pq4p1/k1p1p2p/P7/2PP4/8/5PPP/6K1 w - - 3 35","m":"c8e8 b7b1","r":439,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"bygiO","f":"q1r3k1/5ppp/1p2p3/8/8/2r2PP1/P2Q1P1P/3R1BK1 b - - 0 24","m":"a8f3 d2d8 c8d8 d1d8","r":481,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"bylt7","f":"2Q4k/pb4pp/1q1b4/8/8/2N3PP/PPP2R1K/5R2 b - - 0 24","m":"b7c8 f2f8 d6f8 f1f8","r":421,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"c0c5O","f":"2nr2k1/1B6/4R2p/5p2/2P5/1P6/5PPP/6K1 w - - 1 31","m":"b7c8 d8d1 e6e1 d1e1","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"c1Lli","f":"4rk2/ppp3pp/3p1p2/2n5/7B/P1R5/1PP2PPP/2R1r1K1 w - - 7 24","m":"c1e1 e8e1","r":476,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"c1f9D","f":"6k1/pp3ppp/2p5/2P1q3/1P6/3R2P1/P1nK3P/4N3 b - - 3 32","m":"c2e1 d3d8 e5e8 d8e8","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"c1v96","f":"5rk1/5ppp/1np2q2/1p1p4/3Pb3/2P1PN1P/Q3BPP1/R5K1 b - - 0 22","m":"f8a8 a2a8 b6a8 a1a8 f6d8 a8d8","r":553,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"c5erR","f":"r5k1/pp3ppp/2p3r1/7q/3PQ3/1P3PP1/P6P/3RR1K1 b - - 2 24","m":"h5a5 e4e8 a8e8 e1e8","r":437,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"c5zP1","f":"3Qn1k1/6pp/2p5/8/2P1q3/Pr6/5PPP/4R1K1 w - - 0 32","m":"e1e4 b3b1 d8d1 b1d1 e4e1 d1e1","r":523,"t":"backRankMate endgame long mate mateIn3"},{"i":"c7cWw","f":"4r1k1/p3Rppp/4p3/4P3/1pr5/2BR2PP/PP3PK1/8 b - - 0 33","m":"e8e7 d3d8 e7e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cEgUh","f":"8/1R4pk/p6p/r7/3p4/8/2P2PPP/3R2K1 w - - 0 31","m":"d1d4 a5a1 b7b1 a1b1 d4d1 b1d1","r":537,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"cEkcG","f":"3r2k1/5p2/p5pQ/1p3p2/3r4/P2B1R2/1bq3PP/3R3K w - - 0 28","m":"d3c2 d4d1 c2d1 d8d1 f3f1 d1f1","r":504,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"cIkyL","f":"2r1r2k/6bp/pp2QNp1/8/P2R4/8/1P3PPP/2R3K1 w - - 1 24","m":"f6e8 c8c1 d4d1 c1d1 e6e1 d1e1","r":575,"t":"backRankMate endgame hangingPiece long mate mateIn3"},{"i":"cMMGR","f":"4r1k1/pQp2ppp/2p5/3p4/3Bq3/8/PPP2PPP/R5K1 w - - 1 22","m":"b7a7 e4e1 a1e1 e8e1","r":535,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"cNh3B","f":"3rr1k1/pp3ppp/8/5N2/1P3B2/P7/1Q3PPP/R2q2K1 w - - 1 26","m":"a1d1 d8d1","r":496,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"cOZL1","f":"r3r1k1/ppp1nppp/2n5/2N5/5q2/2P2B2/PP2Q1PP/R3R2K b - - 0 16","m":"e7f5 e2e8 a8e8 e1e8","r":577,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cQWqQ","f":"2r3k1/2R2ppp/8/8/PR2rP2/2p3PP/8/6K1 b - - 1 35","m":"c8c7 b4b8 c7c8 b8c8 e4e8 c8e8","r":549,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"cR5tP","f":"2r3k1/3R1ppp/4p3/1Pr4P/8/1P2K1P1/8/3R4 b - - 0 31","m":"c5b5 d7d8 c8d8 d1d8","r":580,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"cUNAQ","f":"4Qr1k/6pp/5p2/pNq5/2P2P2/8/6PP/4R2K b - - 0 33","m":"f8e8 e1e8 c5f8 e8f8","r":457,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cUiru","f":"4r1k1/1p3p1p/5Qp1/8/8/1B1b3P/P2B2PR/2q4K w - - 5 32","m":"d2c1 e8e1 f6f1 e1f1","r":534,"t":"backRankMate endgame fork master mate mateIn2 short"},{"i":"cWJtv","f":"r4rk1/pbp3pp/2ppB3/2b5/7q/4PQ2/PPPN2PP/R4RK1 b - - 0 14","m":"g8h8 f3f8 a8f8 f1f8","r":535,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cYlj9","f":"2k4r/6p1/6P1/p2qP3/1p2p3/8/PPP5/1K1R4 w - - 0 28","m":"d1d5 h8h1 d5d1 h1d1","r":529,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ca6gk","f":"2r2k2/1R2ppb1/2P3p1/7p/4P3/4B2P/5PP1/6K1 b - - 0 26","m":"c8c6 b7b8 c6c8 b8c8","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ceXRm","f":"r3kb1r/ppp3p1/2np4/4pp2/6p1/6N1/PPPPBPP1/RNBQRK1q w kq - 4 13","m":"g3h1 h8h1","r":506,"t":"backRankMate mate mateIn1 oneMove opening"},{"i":"ceXce","f":"8/3k1pp1/3B4/3p4/1P6/8/r4PPP/3R3K w - - 4 37","m":"d1d5 a2a1 d5d1 a1d1","r":486,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cfVkF","f":"6k1/1p3ppp/8/8/Rn1pp3/1P4P1/2r1PP1P/3K4 b - - 4 30","m":"c2b2 a4a8","r":465,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"cg2p4","f":"r6k/1p1n2pp/1ppp2nr/3Pp2q/PPP1P2B/5R2/5QN1/5RK1 b - - 13 30","m":"g6h4 f3f8 d7f8 f2f8 a8f8 f1f8","r":573,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"chDij","f":"3r1k1r/5pp1/b1B2n1p/p1n1p3/4P3/1QP2N2/1P3PPP/RN4K1 w - - 1 18","m":"b3a3 d8d1 f3e1 d1e1","r":488,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ckM0c","f":"2r1Q2k/1q4pp/5p2/p7/3p4/B7/P4PPP/4R1K1 b - - 3 33","m":"c8e8 e1e8","r":460,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ckyuT","f":"3b2k1/R4ppp/p3rBb1/1p6/8/P4B2/5P1P/6K1 b - - 1 28","m":"d8f6 a7a8 f6d8 a8d8 e6e8 d8e8","r":548,"t":"backRankMate endgame long mate mateIn3"},{"i":"cliuQ","f":"k2r1bn1/q4r2/4p2p/1RPn2p1/3P4/5QB1/5PPP/R5K1 w - - 3 26","m":"f3f7 a7a1 b5b1 a1b1","r":599,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"crQu2","f":"5r1k/6pp/p2b1p2/q1pPpP2/4P1P1/4B2P/PQ6/1R4K1 b - - 0 29","m":"f8b8 b2b8 d6b8 b1b8 a5d8 b8d8","r":510,"t":"backRankMate endgame long mate mateIn3"},{"i":"cs69k","f":"6k1/Q6p/p2p1bp1/1p2p3/4r3/PP2B3/5PPP/2q3K1 w - - 0 32","m":"e3c1 e4e1","r":508,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"csqfY","f":"8/4k3/5p2/4p1p1/8/1q1R3Q/3p1PPP/1R4K1 w - - 1 60","m":"b1d1 b3d1","r":545,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"cuCK3","f":"rn4k1/ppp2ppp/5n2/4r3/4N3/5B2/PPP2PPP/3RK2R b K - 0 13","m":"f6e4 d1d8 e5e8 d8e8","r":465,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cudkF","f":"r1b4k/p1q1n1pp/3r1p2/1p6/7N/8/B3QPPP/5RK1 b - - 1 27","m":"e7d5 e2e8","r":427,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"cvyG9","f":"1q4k1/5ppp/4p3/2Np1b2/1Q1P4/5N2/5PPP/R5K1 b - - 0 26","m":"b8b4 a1a8 b4b8 a8b8","r":485,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cwQCS","f":"2r1r2k/p2nq1bp/1pp2pp1/8/3P4/1NP1BQ2/PP3PPP/R3R1K1 w - - 4 19","m":"e3f4 e7e1 a1e1 e8e1","r":544,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"d582R","f":"2r3k1/1p3ppp/p7/4p3/3R2P1/4Q2P/PPq2P2/K3R3 b - - 0 25","m":"e5d4 e3e8 c8e8 e1e8","r":566,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"d5QJg","f":"6k1/p4pp1/1q5p/8/5P2/B3r3/PPQ2nPP/5R1K w - - 0 33","m":"f1f2 e3e1 f2f1 e1f1","r":528,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dCThQ","f":"6k1/5ppp/p3p3/2p4n/2P1Nq2/5P2/PP3P1P/3Q2K1 b - - 0 24","m":"f4e5 d1d8","r":506,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"dJKj0","f":"4r1k1/p3rp2/3bqp1B/2p5/2Np4/5Q2/PP3PPP/R2R2K1 w - - 3 23","m":"c4d6 e6e1 d1e1 e7e1 a1e1 e8e1","r":585,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"dMOdj","f":"6k1/2p2p2/5p1p/8/2R5/8/rr3PPP/R5K1 w - - 0 26","m":"a1a2 b2b1 c4c1 b1c1","r":592,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dS2Fi","f":"2kr1r2/ppp3pp/4R3/8/3NQ3/8/PP4PP/4Rq1K w - - 2 24","m":"e1f1 f8f1","r":518,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"dU4tF","f":"4r1k1/ppq2p1p/2p3p1/4rbB1/5Q2/2P5/P1P2PPP/2R1R1K1 w - - 0 21","m":"g5f6 e5e1 c1e1 e8e1","r":581,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dUrST","f":"4r1k1/5p1p/2Q3p1/8/2p5/P3q3/1P4PP/2Rr3K w - - 0 30","m":"c1d1 e3e1 d1e1 e8e1","r":587,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"dYaTT","f":"6k1/p5pp/1p3p2/2pr4/8/P1nRPN2/5PPP/6K1 w - - 0 28","m":"d3c3 d5d1 f3e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"da7xO","f":"6k1/5p1p/6p1/8/1P6/3r4/rP3PPP/3R2K1 w - - 0 32","m":"d1d3 a2a1 d3d1 a1d1","r":412,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dbq2Z","f":"4k3/r7/1RP1Pn2/1P1p4/6p1/4R3/5PPP/6K1 w - - 1 35","m":"b6b7 a7a1 e3e1 a1e1","r":559,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dcM5Z","f":"r3Q1k1/1bq2ppp/ppn2b2/3r4/P7/5N2/BP3PPP/3RR1K1 b - - 1 18","m":"a8e8 e1e8","r":479,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"dfXun","f":"4r1k1/pp3p1p/6p1/8/8/8/5qPP/1N3R1K w - - 0 30","m":"f1f2 e8e1 f2f1 e1f1","r":427,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"dfrtE","f":"4rk1r/pp3ppb/2qB3p/8/2Pp4/8/PP1NQPPP/4R1K1 b - - 5 22","m":"f8g8 e2e8 c6e8 e1e8","r":419,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dh5AJ","f":"8/p7/2p4p/k1p3P1/4P3/2N5/PPP2rP1/1K4NR w - - 0 22","m":"g5h6 f2f1 c3d1 f1d1","r":565,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dmGtP","f":"N4k1r/1b2npp1/4p2p/4n3/6P1/8/PPP3BP/2KR3R b - - 0 20","m":"b7g2 d1d8","r":500,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"dqXl1","f":"4r1k1/pQp2p1p/6p1/4r3/1P6/P7/2P2PPP/2q2RK1 w - - 0 29","m":"f1c1 e5e1 c1e1 e8e1","r":488,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"dsLnQ","f":"1r4r1/p1kb3p/2p5/2P2P2/2BP4/P4Q2/6PP/7K w - - 1 35","m":"c4g8 b8b1 f3d1 b1d1","r":586,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dxzRZ","f":"1r6/3nppkp/6p1/p1pPp3/2P1P3/P1Q5/3N1PPP/1q4K1 w - - 0 28","m":"d2b1 b8b1 c3c1 b1c1","r":478,"t":"backRankMate endgame mate mateIn2 short"},{"i":"e3wD5","f":"8/4nkpp/5p2/1R1r4/pB6/P7/5PPP/6K1 w - - 0 32","m":"b5b7 d5d1 b4e1 d1e1","r":416,"t":"backRankMate endgame mate mateIn2 short"},{"i":"e6C1i","f":"3r4/6kp/p4pp1/2p2b2/2N5/1P6/P3RPPP/3rR1K1 w - - 12 27","m":"e1d1 d8d1 e2e1 d1e1","r":401,"t":"backRankMate endgame mate mateIn2 short"},{"i":"e6Ufd","f":"2r3k1/pp3ppp/2n1p3/4Bb2/8/3r1P2/PP4PP/2R2RK1 b - - 6 24","m":"c6e5 c1c8 d3d8 c8d8","r":431,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"e6mfq","f":"2k2r2/1b1r4/1pq3p1/p1pp2bp/P3PB2/3P3Q/RP4PP/5R1K w - - 2 27","m":"f4g5 f8f1","r":519,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"e8IQg","f":"r3r1k1/ppp1qpp1/5n1p/4P3/1bN5/1P3Q2/P1P2PPP/R1BR2K1 w - - 3 15","m":"e5f6 e7e1 d1e1 e8e1","r":564,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"eAFaH","f":"3r2k1/ppb2ppp/2p2n2/5P1b/1r5q/3NR1N1/PPQ2PBP/4R1K1 b - - 5 26","m":"f6g4 e3e8 d8e8 e1e8","r":496,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"eH7RY","f":"6k1/8/1p1NN1p1/p6p/r7/2P1b3/6PP/5R1K w - - 0 43","m":"f1f7 a4a1 f7f1 a1f1","r":516,"t":"backRankMate endgame mate mateIn2 short"},{"i":"eKDfV","f":"1r2r1k1/p1q2ppp/2p1p1b1/2Pp1P2/3P4/5PPB/P3Q2P/R3R1K1 b - - 0 22","m":"e6f5 e2e8 b8e8 e1e8","r":575,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eKLbn","f":"4kr2/1p4R1/p3p3/2np2P1/8/8/PPP1b3/1K2R3 w - - 0 33","m":"e1e2 f8f1 e2e1 f1e1","r":491,"t":"backRankMate endgame mate mateIn2 short"},{"i":"eauxG","f":"6k1/1R4p1/1p1p3p/8/P7/1q3P2/6PP/3R3K w - - 7 38","m":"a4a5 b3d1","r":492,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove queenRookEndgame"},{"i":"ecCBo","f":"3r1rk1/1p3pbp/1pp1b1p1/8/4P3/P4B2/1P1R1PPP/R1B3K1 w - - 3 20","m":"d2e2 d8d1 e2e1 d1e1","r":428,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eddij","f":"Q3r1k1/2q2ppp/2p1p3/3pRb2/1P1P4/2P5/3N1PPP/R5K1 b - - 0 20","m":"e8a8 a1a8 c7b8 a8b8","r":505,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ee5zg","f":"6k1/pp4pp/5b2/3r2n1/3P2K1/2P3P1/PP2R2P/8 b - - 2 30","m":"g5f7 e2e8","r":488,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"egnWv","f":"3rr1k1/4nppp/pp3q2/2pB4/2P5/PR3P2/2P1QBPP/4R1K1 b - - 3 24","m":"e7d5 e2e8 d8e8 e1e8","r":502,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ekqoK","f":"6k1/1r3ppp/4p3/2P5/1R6/2P5/6PP/6K1 b - - 2 26","m":"b7c7 b4b8 c7c8 b8c8","r":457,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"eqFTI","f":"rn1r2k1/pp3ppp/3N1p2/2pP4/8/5N2/PPP2PPP/R3R1K1 b - - 0 15","m":"d8d6 e1e8","r":468,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ex8xv","f":"8/1p3p1p/p7/3b1N2/1k6/2R5/PPP3rP/1K1R4 w - - 7 28","m":"d1d5 g2g1 d5d1 g1d1","r":536,"t":"backRankMate endgame mate mateIn2 short"},{"i":"exTXg","f":"6k1/5ppp/4p3/3p4/3Pn3/1rp1PN1P/1P3PP1/R5K1 b - - 1 26","m":"c3b2 a1a8 b3b8 a8b8","r":588,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ez4fR","f":"6k1/5ppp/2p1p3/2PpP3/1rbN4/q5Q1/5PPP/1R4K1 w - - 0 29","m":"g3a3 b4b1 a3c1 b1c1","r":485,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"f4rX0","f":"8/1p1b2kp/8/2pp4/r3p3/1QP5/5PPP/6K1 w - - 0 30","m":"b3d5 a4a1 d5d1 a1d1","r":463,"t":"backRankMate endgame mate mateIn2 short"},{"i":"f7Y7I","f":"3r1r2/pppk4/5q2/6NQ/4P3/P2P4/6PP/3R3K w - - 11 25","m":"g5h7 f6f1 d1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"f8pvB","f":"r3r1k1/2p3pp/1pn2p2/p2p1n2/3P1Q2/P2P1N2/1P3PPP/R1N1q1KR w - - 1 19","m":"f3e1 e8e1","r":495,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"fA3Oc","f":"5rk1/R4ppp/1p6/2nB4/P7/r7/5PPP/1R4K1 w - - 7 29","m":"b1b6 a3a1 b6b1 a1b1","r":508,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fAC9o","f":"r1bq1Q1k/ppp3pp/3p4/2n5/8/2P5/PPP3PP/R1B2RK1 b - - 2 14","m":"d8f8 f1f8","r":418,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"fDw8x","f":"5k1r/p3R2P/8/5p2/2pN1Pr1/3b4/PP5R/K7 w - - 11 41","m":"e7a7 g4g1","r":516,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fI1vS","f":"r1b2r1k/pp2q1bp/6p1/2P2pNP/3p4/1Q4N1/PPP2PP1/1K3B1R w - - 1 19","m":"h5g6 e7e1","r":477,"t":"backRankMate master masterVsMaster mate mateIn1 middlegame oneMove"},{"i":"fI6ya","f":"2k2r2/8/1Q6/p2P1pp1/q1P1p3/8/5PPP/3R2K1 w - - 0 32","m":"d5d6 a4d1","r":468,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"fJJkn","f":"1rr3k1/3b1pbp/6p1/8/p2p1QP1/1P5P/PN1R1P2/K1qR4 w - - 2 27","m":"d1c1 c8c1","r":461,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"fNRAk","f":"4rbkr/p5pp/2p5/3q2N1/8/5Q2/PP3PPP/3R2K1 w - - 4 26","m":"d1d5 e8e1","r":444,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fQhkY","f":"3r4/p5pk/1pR1p2p/4Np2/Pn3P2/1PQ5/6PP/2Rq3K w - - 8 33","m":"c1d1 d8d1 c3e1 d1e1","r":591,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fgbsq","f":"3r2k1/pp3ppp/8/2p5/P3P3/2PrRn2/5PPP/2R3K1 w - - 0 22","m":"e3f3 d3d1 c1d1 d8d1","r":437,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"fgshu","f":"3rkb1r/1pp3pp/p4p2/4N3/4n3/8/PPP2PPP/R1B1R1K1 w k - 0 13","m":"e1e4 d8d1 e4e1 d1e1","r":443,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"fk6Sc","f":"4r2k/pp2QBpp/8/8/P4q1P/4b3/1PP5/1K1R4 b - - 0 29","m":"e8e7 d1d8 e7e8 d8e8","r":554,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fqCkc","f":"3r3k/6pp/2p5/2P5/1P6/P3R2P/3N1rPK/8 b - - 0 43","m":"d8d2 e3e8 f2f8 e8f8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"fqgLy","f":"r3R2k/6pp/p3Qp2/3p4/8/6P1/qP3PKP/8 b - - 3 29","m":"a8e8 e6e8","r":471,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fxZLW","f":"3rk2r/1pp3pp/p1p1bn2/4b3/5B2/8/PPP2PPP/RN2R1K1 w k - 0 13","m":"e1e5 d8d1 e5e1 d1e1","r":417,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"g9bGy","f":"3r2k1/5pp1/2pr3p/2RP4/1p6/1P6/P4PPP/2R3K1 w - - 2 25","m":"d5c6 d6d1 c1d1 d8d1","r":521,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"gA5q3","f":"r3R2k/ppp3pp/n1n5/6B1/8/8/PP3KPP/4R3 b - - 1 24","m":"a8e8 e1e8","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gBWvH","f":"3r2k1/5ppp/4p3/8/5K2/5P2/3N4/1R6 b - - 0 37","m":"d8d2 b1b8 d2d8 b8d8","r":417,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"gBvi9","f":"2k2r2/6R1/5r1p/p2p4/1p6/8/PPP3PP/1K2R3 w - - 1 32","m":"e1e7 f6f1 e7e1 f1e1","r":457,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"gE6hO","f":"5r1k/p1pb4/6Qp/2pP4/2P5/P1P1p1N1/6PP/5q1K w - - 0 35","m":"g3f1 f8f1","r":519,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"gHUI7","f":"1k4r1/ppp3q1/8/1Pb1RB2/8/6N1/4R1KP/8 b - - 12 40","m":"c5d6 e5e8 g8e8 e2e8","r":470,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"gKm15","f":"2r3k1/pp1R1ppp/q3p3/8/P3P3/2Q2P2/1P4PP/4K1NR b K - 0 18","m":"c8c3 d7d8","r":536,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gN4yV","f":"6k1/4R1pp/rp2p3/4P3/8/4B3/5PPP/6K1 w - - 0 27","m":"e7e6 a6a1 e3c1 a1c1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gRZdh","f":"2kr3r/ppp1b1pp/5n2/8/8/8/PPP2PPP/RNB1R1K1 w - - 2 14","m":"e1e7 d8d1 e7e1 d1e1","r":400,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"gRrK1","f":"rnbqr1k1/4bppp/p2p1B2/1ppP4/2B5/5N2/PPP1QPPP/RN2R1K1 b - - 0 11","m":"e7f6 e2e8 d8e8 e1e8","r":548,"t":"backRankMate mate mateIn2 opening short"},{"i":"gSpPA","f":"3r4/p1p3Q1/2k1p3/2P3p1/3r4/8/P4PPP/R5K1 w - - 2 32","m":"g7g5 d4d1 a1d1 d8d1","r":535,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"gUVRL","f":"4r1k1/pp3p2/3p1Rp1/2p1r3/8/2P5/2BQ2PP/1q5K w - - 0 29","m":"c2b1 e5e1 d2e1 e8e1 f6f1 e1f1","r":509,"t":"backRankMate endgame fork long mate mateIn3"},{"i":"gWvyv","f":"2r3k1/p4pp1/6bp/2qp4/3N4/PQ2P2P/4nPPB/2R3K1 w - - 8 30","m":"d4e2 c5c1 e2c1 c8c1 b3d1 c1d1","r":528,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"geVBv","f":"r3r1k1/ppp2ppp/8/3p4/3n2b1/B2P1NP1/PPPN2RP/2K2B1n w - - 4 17","m":"f3d4 e8e1","r":497,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"gfZNW","f":"4r1k1/p4ppp/1b5q/8/3pQN1P/6P1/PP2PP2/2R2RK1 b - - 0 27","m":"e8e4 c1c8 b6d8 c8d8 e4e8 d8e8","r":495,"t":"backRankMate endgame long mate mateIn3"},{"i":"glR9z","f":"8/2Rb2kp/p3ppp1/8/P2P4/5N2/5PPP/1r4K1 w - - 1 27","m":"f3e1 b1e1","r":490,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"go36j","f":"2r3k1/5ppp/4p3/4P3/Rp2p3/1P5P/5PP1/7K b - - 1 27","m":"c8c5 a4a8 c5c8 a8c8","r":407,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"go9Wy","f":"6k1/pp1b1ppp/1qp2p2/8/1b1P3N/1PB1R1P1/P1P2P1P/4R1K1 b - - 0 21","m":"b4c3 e3e8 d7e8 e1e8","r":448,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"gq8Vc","f":"6k1/2r5/1p2q1pp/3p4/1P1P4/8/5PPP/4R1K1 w - - 0 38","m":"e1e6 c7c1 e6e1 c1e1","r":572,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"gstnR","f":"1Q4k1/2b2ppp/4b3/8/8/B2R4/P4PPP/q3N1K1 b - - 0 24","m":"c7b8 d3d8","r":409,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gtsDV","f":"1k2r3/ppp1q2p/3p4/PP6/3Q2p1/8/2P2PPP/1R4K1 w - - 1 26","m":"a5a6 e7e1 b1e1 e8e1","r":572,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"gum86","f":"6k1/pp2pp1p/6p1/5b2/P4P2/1Rrr4/2R3PP/7K w - - 0 25","m":"b3c3 d3d1","r":535,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gxDwX","f":"4r1k1/6p1/p5R1/3p1p2/5P2/P7/4r1PP/2q2Q1K w - - 0 39","m":"f1c1 e2e1 c1e1 e8e1","r":487,"t":"backRankMate endgame fork master mate mateIn2 queenRookEndgame short"},{"i":"gykBG","f":"7k/6pp/8/q1Q5/7P/4P1P1/5P2/3R2K1 b - - 0 41","m":"a5c5 d1d8 c5f8 d8f8","r":490,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"h1uU3","f":"4r1k1/2R2ppp/1p6/4Q3/8/7P/P4PPK/8 b - - 0 29","m":"e8e5 c7c8 e5e8 c8e8","r":401,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"h1ugV","f":"5rk1/1pp3pp/1p1p4/4p3/4q3/P1P5/1P4PP/4QB1K w - - 0 25","m":"e1e4 f8f1","r":443,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"h2jKY","f":"6k1/5ppp/2B5/2p5/R1Pb1K2/p3r2P/6P1/r7 b - - 9 41","m":"a3a2 a4a8 e3e8 a8e8","r":596,"t":"backRankMate endgame mate mateIn2 short"},{"i":"h6iPv","f":"r1b1rnk1/pp3R2/6pQ/6N1/2P5/3p4/PP4PP/R3q2K w - - 1 26","m":"a1e1 e8e1 f7f1 e1f1","r":426,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"hC5jF","f":"8/p1r4k/6p1/4p3/4P2p/8/PP4PP/5R1K w - - 1 28","m":"f1f2 c7c1 f2f1 c1f1","r":464,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"hEX6M","f":"1nQ3k1/4Rppp/q2p4/3P2P1/5P1P/8/1P6/1K2R3 b - - 0 29","m":"a6c8 e7e8 c8e8 e1e8","r":533,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"hGHjx","f":"4r1k1/p3nppp/8/3N1p2/1P6/P1r5/2P2PPP/2R1R1K1 b - - 4 22","m":"e7d5 e1e8","r":431,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"hVAbS","f":"2Q2r1k/6pp/4R3/8/1p5q/5P2/1P4P1/4R1K1 b - - 0 37","m":"f8c8 e6e8 c8e8 e1e8","r":502,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"hX1SD","f":"6k1/5ppp/5n2/8/8/1RPP4/P3r1PP/6K1 b - - 0 27","m":"e2a2 b3b8 f6e8 b8e8","r":558,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hZ9ke","f":"6k1/2q2ppp/p1Q1b3/1r1R4/8/1P6/P1P2PPP/4R1K1 b - - 0 26","m":"c7c6 d5d8 c6e8 d8e8","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hb1jD","f":"r5k1/4rppp/2p1p3/3p4/pP5P/RR6/5PP1/6K1 b - - 0 27","m":"a4b3 a3a8 e7e8 a8e8","r":516,"t":"backRankMate endgame hangingPiece mate mateIn2 rookEndgame short"},{"i":"hb9Jj","f":"4rQ1k/2p3pp/4r3/8/1P6/P3q2P/6P1/2R2R1K b - - 2 39","m":"e8f8 f1f8","r":584,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"hgVAg","f":"8/6p1/6kp/8/4q3/8/r4PPP/4R1K1 w - - 0 35","m":"e1e4 a2a1 e4e1 a1e1","r":447,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"hhdqo","f":"6k1/5ppp/1p3b2/1Pp5/3N4/4P3/rPR3PP/6K1 b - - 3 23","m":"c5d4 c2c8 f6d8 c8d8","r":500,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hjTKC","f":"3r1Q1k/1p4pp/p1p5/8/3qP3/1B1Pn3/PPP3PP/5R1K b - - 2 25","m":"d8f8 f1f8","r":547,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hrIo2","f":"2r3k1/5ppp/Rp2p3/8/5P2/2PK3P/1P6/8 b - - 0 33","m":"c8c6 a6a8 c6c8 a8c8","r":470,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"hsXEM","f":"3r2k1/4ppbp/1p4p1/4P3/4QP2/1P6/P1P2qPP/RN3R1K w - - 3 25","m":"f1f2 d8d1 e4e1 d1e1 f2f1 e1f1","r":473,"t":"backRankMate endgame long mate mateIn3"},{"i":"hvx39","f":"5r1k/6pp/p2RP3/1p1Pp3/8/1P3QPP/P4P1K/4q3 b - - 0 29","m":"f8f3 d6d8 f3f8 d8f8","r":461,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"hwbkh","f":"1k6/1pr2pp1/1Q1b1np1/P1r1p3/8/6B1/5PPP/1R4K1 w - - 3 30","m":"a5a6 c5c1 b1c1 c7c1","r":511,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"hzCj3","f":"3r1rk1/1p6/p7/8/Q3P3/5P2/P1R3PP/7K w - - 1 44","m":"a4b4 d8d1 b4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"i3T2n","f":"7r/p1q4p/3R2nk/1r3p2/4p3/6Q1/P4PPP/2R3K1 w - - 1 33","m":"c1c7 b5b1 c7c1 b1c1 d6d1 c1d1","r":420,"t":"backRankMate endgame long mate mateIn3"},{"i":"i53B6","f":"r1bk1Q1r/ppppn2p/8/8/3qP3/8/PP4PP/RNB2R1K b - - 0 14","m":"h8f8 f1f8","r":446,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"i6XmU","f":"r3r1k1/7p/p1p3pB/3p2R1/8/2NP2N1/PP4PP/R3q2K w - - 1 23","m":"a1e1 e8e1 g3f1 e1f1","r":426,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"iAOsQ","f":"rnbr1Q1k/1p4pp/p3p3/8/3q4/8/PPP1B1PP/R4R1K b - - 2 18","m":"d8f8 f1f8","r":432,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"iDMiN","f":"7r/p1k4B/1p6/2p5/3p1bP1/8/PPP5/1K5R w - - 3 34","m":"h7f5 h8h1","r":505,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"iFrBt","f":"2r5/3k1p2/p2P2p1/1p2r3/8/3R4/1P3PPP/4R1K1 w - - 0 29","m":"e1e5 c8c1 d3d1 c1d1 e5e1 d1e1","r":460,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"iGLGD","f":"8/pp4pp/4kp2/8/3R4/4P3/P4PPP/2r3K1 w - - 1 28","m":"d4d1 c1d1","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"iK4eg","f":"2r3k1/pp3pp1/4q2p/8/8/6Q1/5PPP/4R1K1 w - - 0 26","m":"e1e6 c8c1 e6e1 c1e1","r":550,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"iLyO8","f":"5r1k/p1p3pp/2q5/4p3/3nN3/1Q4P1/PP5P/5R1K b - - 1 30","m":"d4b3 f1f8","r":447,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"iNMU8","f":"1k1r4/ppp2p2/8/n3p2b/2P5/3Q1P2/P2NN2r/R3K1R1 b Q - 0 22","m":"d8d3 g1g8 d3d8 g8d8","r":468,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"iPa0j","f":"3rkb1r/ppp2ppp/6n1/4P3/1PP1Q1P1/P6P/1B2PPB1/R2q1K1R w k - 7 17","m":"a1d1 d8d1","r":420,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"iPcmX","f":"2Q3k1/1b1R1ppp/p5q1/8/P7/4PP2/5KPP/R7 b - - 0 29","m":"b7c8 d7d8","r":484,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"iQMoJ","f":"r3r1k1/p1p2ppp/2p5/8/4n3/P1P2PPq/1BPPQ2P/1R2R1K1 b - - 0 17","m":"e4g3 e2e8 a8e8 e1e8","r":426,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"iUh05","f":"2kr3r/p1p1bpp1/2p1b2p/8/4B3/2P1R3/PP3PPP/RN4K1 w - - 1 16","m":"e4c6 d8d1 e3e1 d1e1","r":430,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"iWdCL","f":"2rQ3k/p5pp/b1p5/5p2/4p1q1/1P6/P5PP/2RR2K1 b - - 3 27","m":"c8d8 d1d8","r":437,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"iZy2A","f":"1r4k1/6pp/3pQ3/5p2/5P2/8/1q4PP/4R2K b - - 0 34","m":"g8h8 e6e8 b8e8 e1e8","r":562,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"idN4d","f":"2k2r2/pp2b3/2n4p/2p1p1pQ/3pP3/3P2N1/PPP3PP/R1B2q1K w - - 8 26","m":"g3f1 f8f1","r":426,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"idbw3","f":"3r2k1/1r3ppp/Qp2p3/8/2P5/3P2P1/P4PKP/3q4 b - - 1 26","m":"d8d7 a6a8 b7b8 a8b8 d7d8 b8d8","r":421,"t":"backRankMate endgame long mate mateIn3"},{"i":"ie7Rt","f":"2kr4/pp4Q1/2p1pr1p/7P/3PP3/2P5/PP4P1/K4q1R w - - 1 29","m":"h1f1 f6f1","r":413,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"igrO3","f":"2r3k1/5ppp/p3p3/2rn4/2PR4/1P4P1/P4P1P/2KR4 b - - 0 25","m":"d5b4 d4d8 c8d8 d1d8","r":432,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ilRnf","f":"2r2k1Q/2r1qpp1/6n1/2nPp1P1/p3P3/Pp5R/1P3BB1/2R3K1 b - - 8 38","m":"g6h8 h3h8","r":513,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"imISP","f":"5k2/3r2pp/p1b1Q3/n7/B3Pp2/1P6/5PPP/6K1 w - - 0 34","m":"a4c6 d7d1","r":445,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ionim","f":"B7/r3kp1p/6p1/1R6/3b1P2/8/2n3PP/2R4K w - - 5 33","m":"c1c2 a7a1 b5b1 a1b1 c2c1 b1c1","r":532,"t":"backRankMate endgame fork long mate mateIn3"},{"i":"iqf0P","f":"3r1bk1/pp3pp1/4qn1p/2P5/1PP5/6Q1/PB3PPP/4R1K1 w - - 1 24","m":"e1e6 d8d1 e6e1 d1e1","r":543,"t":"backRankMate endgame mate mateIn2 short"},{"i":"iyczD","f":"8/5kpp/5p2/3rp3/8/1P6/1r3PPP/3R2K1 w - - 0 36","m":"d1d5 b2b1 d5d1 b1d1","r":421,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"j07gf","f":"r5k1/5ppb/p1R1p2p/4P3/Np3P2/1P4P1/P2r3P/2R3K1 b - - 1 28","m":"d2a2 c6c8 a8c8 c1c8","r":555,"t":"backRankMate endgame mate mateIn2 short"},{"i":"j2hE0","f":"r5k1/1q3ppp/p7/7b/2p2B2/3r1P1P/1P2QP2/R3R1K1 b - - 0 24","m":"h5f3 e2e8 a8e8 e1e8","r":418,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"j34wQ","f":"r4Q1k/pb1p2pp/1p1p3r/3P2qn/2P1P3/1PNB4/P5PP/4RRK1 b - - 2 20","m":"a8f8 f1f8","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"j3aPk","f":"6k1/5ppp/p7/1pp2q2/4n3/5B2/PP1Q1PPP/4R1K1 b - - 0 26","m":"e4d2 e1e8","r":413,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"j6DOB","f":"2r3k1/2r2ppp/1q6/p2p4/1p1Nn3/4QP1P/1PP1R1P1/2R3K1 b - - 0 30","m":"e4g3 e3e8 c8e8 e2e8","r":478,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"j7bms","f":"3b1Q1k/p5pp/3q4/3P4/8/7P/PP2r1P1/3R1R1K b - - 2 32","m":"d6f8 f1f8","r":430,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"j7v6n","f":"4r3/p4ppk/7p/2B5/1P6/3q4/PP3P1P/K2R4 w - - 0 32","m":"d1d3 e8e1 d3d1 e1d1","r":449,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jB7Ps","f":"6k1/2r1n2p/3Q2p1/3Pp3/2r5/P4N2/5PPP/R5K1 w - - 1 29","m":"f3e5 c4c1 a1c1 c7c1","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jFEaq","f":"4r2k/6pp/2p2R1b/1p6/p6B/7P/4Q1PK/8 b - - 0 43","m":"e8e2 f6f8","r":536,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"jGXl1","f":"3r1rk1/6pp/pp1q4/n1p2p2/P1PPp3/2R1P3/Q3NPPP/1R4K1 w - - 0 20","m":"d4c5 d6d1 b1d1 d8d1","r":558,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"jHBWd","f":"2r3k1/pbR2pp1/5n1p/8/BP1p1N2/P7/5PPP/6K1 w - - 1 26","m":"c7b7 c8c1 a4d1 c1d1","r":474,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jHIHD","f":"2r2k2/p4ppp/4p3/3n4/8/2N5/PP1R1PPP/6K1 w - - 3 23","m":"c3d5 c8c1 d2d1 c1d1","r":491,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jIWs5","f":"2k1r3/ppp4p/4p1q1/8/3Q4/P7/1PP3PP/1K1R4 b - - 0 31","m":"c8b8 d4d8 e8d8 d1d8","r":514,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"jKz6f","f":"4r1k1/6pp/8/R7/3P4/2PQ1P2/1P4PP/2R1q2K w - - 1 60","m":"c1e1 e8e1 d3f1 e1f1","r":466,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"jS6m1","f":"4r1k1/2p2p1p/3p2p1/q2b4/5Q2/5PN1/1P4PP/R6K w - - 3 29","m":"a1a5 e8e1 g3f1 e1f1","r":483,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jTsjZ","f":"3r4/7p/p4p2/1pR1p3/1B2k3/8/P4PPP/6K1 w - - 0 27","m":"c5c7 d8d1 b4e1 d1e1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jZ1Wh","f":"6k1/p3bp1p/8/3P1p2/2P5/Pr6/5PPP/4R1K1 w - - 0 25","m":"e1e7 b3b1 e7e1 b1e1","r":426,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"jcUH2","f":"3r2k1/p5p1/1p3p2/4p3/1P1r1R2/5Q2/P4PPP/1R1q2K1 w - - 0 37","m":"b1d1 d4d1 f3d1 d8d1","r":414,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"jck6Y","f":"r3Q2k/pNq3pp/1pp3n1/8/3P1p2/5P2/PP4PP/4R1K1 b - - 3 27","m":"a8e8 e1e8 g6f8 e8f8","r":402,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jecIn","f":"4r2k/1rp3pp/4Pp2/8/1N3p2/1PP5/6PP/3R2K1 b - - 0 35","m":"e8e6 d1d8 e6e8 d8e8","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jgftx","f":"8/7p/4pp2/1Pk3p1/r1PR4/6P1/2R3PP/7K w - - 1 30","m":"d4d8 a4a1 c2c1 a1c1 d8d1 c1d1","r":518,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"ji2oR","f":"8/4Rpp1/2k4p/8/2r5/P7/6PP/7K w - - 2 34","m":"e7f7 c4c1 f7f1 c1f1","r":457,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ji4r8","f":"3R4/pB3pkp/1n3p2/2r5/8/8/P4PPP/6K1 w - - 2 24","m":"a2a4 c5c1 d8d1 c1d1","r":496,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jjeE4","f":"4r1k1/ppp4p/4q1p1/8/P6Q/2Bb4/1P3PPP/2R3K1 w - - 0 29","m":"c1e1 e6e1 c3e1 e8e1","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jjnQY","f":"rnb3k1/ppp2ppp/8/8/4r3/5N2/PPP1BPPP/3RK2R b K - 1 14","m":"c8g4 d1d8 e4e8 d8e8","r":517,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"jkm3F","f":"r4Q1k/1p4pp/2p5/p7/P2P3q/B3r2P/6P1/R4RK1 b - - 2 23","m":"a8f8 f1f8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"jq1L6","f":"rn2rQ1k/p5pp/2p5/4q3/3N4/2P1P3/P5PP/R4RK1 b - - 2 18","m":"e8f8 f1f8","r":485,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"jqu2p","f":"2r3k1/R4ppp/1p6/3r4/8/b3P3/P4PPP/3R2K1 w - - 0 21","m":"d1d5 c8c1 d5d1 c1d1","r":499,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jtO7V","f":"8/4kp1p/R5p1/1p1r4/8/8/1P3PPP/6K1 w - - 0 31","m":"a6b6 d5d1","r":400,"t":"backRankMate endgame master mate mateIn1 oneMove rookEndgame"},{"i":"jvQ5V","f":"4r1k1/7p/6p1/1Q1p4/1P6/8/1P4PP/3Rq2K w - - 1 35","m":"d1e1 e8e1 b5f1 e1f1","r":423,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"jzjHB","f":"2r1r1k1/pp2qp1p/3p2p1/2p5/1PP2B2/5B2/P1Q2PPP/5RK1 w - - 3 21","m":"f1d1 e7e1 d1e1 e8e1","r":537,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"jznpW","f":"r2b1r1k/5Qpp/p2P4/1p3n2/2p1R3/B6P/P4PP1/5RK1 b - - 0 29","m":"f8f7 e4e8 f7f8 e8f8","r":400,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"k0VEA","f":"5r1k/1pRn1r1p/5q2/p2QnNp1/P7/1P4N1/6PP/5R1K w - - 3 28","m":"f5e3 f6f1 e3f1 f7f1 g3f1 f8f1","r":568,"t":"backRankMate long master mate mateIn3 middlegame sacrifice"},{"i":"k2YfV","f":"3rQ2k/ppb3pp/2p5/8/P4q2/2P2b1P/1P3PB1/4R1K1 b - - 1 29","m":"d8e8 e1e8 f4f8 e8f8","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"k3EWK","f":"4Qb1k/2p3pp/p5n1/qp1B4/3P4/2P5/1P1B1PPP/6K1 w - - 1 27","m":"e8f7 a5a1 d2c1 a1c1","r":449,"t":"backRankMate endgame mate mateIn2 short"},{"i":"k3sXE","f":"2r3k1/1b3ppp/4pq2/p7/8/PP2P1P1/3Q1P1P/3R2K1 b - - 4 23","m":"f6f3 d2d8 c8d8 d1d8","r":468,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"k4pvk","f":"4r1k1/pp1b1ppp/8/3nr3/8/4BB2/1P3PPP/2R1R1K1 w - - 2 22","m":"e3a7 e5e1 c1e1 e8e1","r":580,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"k5fza","f":"r2q3k/pp4pp/2p1Q3/3p2P1/7P/2r5/P1P5/2KRR3 b - - 0 22","m":"d8a5 e6e8 a8e8 e1e8","r":566,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"k7SGI","f":"2r3k1/p4ppp/2p5/5qPP/1r1P1P2/1R6/PP2Q3/K3R3 b - - 2 34","m":"b4b3 e2e8 c8e8 e1e8","r":447,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"k8vBJ","f":"2b2rk1/5r1p/BQ4p1/3p4/3Np3/8/P5PP/1R3q1K w - - 2 30","m":"a6f1 f7f1 b1f1 f8f1","r":544,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"kBqwS","f":"2rr2k1/4Rppp/p7/8/2p5/8/PP1N1PPP/4R1K1 b - - 0 23","m":"d8d2 e7e8 c8e8 e1e8","r":473,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"kD2tS","f":"1r4k1/1p4pp/1RbP4/8/4rp2/8/5PPP/B1R3K1 w - - 3 32","m":"c1c6 e4e1","r":457,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"kDXjb","f":"5rk1/1R3pb1/6p1/N2Qp2p/q3P3/8/1PP2PPP/6K1 w - - 3 31","m":"a5c6 a4a1 d5d1 a1d1","r":474,"t":"backRankMate endgame mate mateIn2 short"},{"i":"kDt3C","f":"4rr1k/p5pp/3q1p2/2p5/2Q2P2/6P1/PPP4P/1K1R4 w - - 0 28","m":"d1d6 e8e1 d6d1 e1d1","r":448,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"kHKP7","f":"r7/4bkpp/4b3/1pP1Q3/8/1N6/6PP/7K w - - 0 31","m":"b3d4 a8a1 e5e1 a1e1","r":473,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"kHkLL","f":"r3r1k1/1b2qppp/p1p2n2/3p2B1/3Q2N1/2N5/PPP2PPP/R5K1 w - - 2 15","m":"g5f6 e7e1 a1e1 e8e1","r":564,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"kLEAC","f":"r4rk1/1R3p2/2R4p/p1pPpBq1/4P1p1/PQ1P4/5PPP/6K1 w - - 2 23","m":"d5d6 g5c1 b3d1 c1d1","r":400,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"kO2gp","f":"6k1/1R3ppp/p7/3r1b2/2K1n2P/8/6P1/8 b - - 2 34","m":"d5d2 b7b8 f5c8 b8c8 d2d8 c8d8","r":464,"t":"backRankMate endgame long mate mateIn3"},{"i":"kQBN0","f":"5r1k/p4Qpp/8/8/3P1p1P/2Pq4/PP4P1/4R1KR b - - 1 29","m":"f8f7 e1e8 f7f8 e8f8","r":480,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"kQoMD","f":"3r2k1/1p3pp1/p6p/8/4q3/P7/1PP3PP/4R2K w - - 0 24","m":"e1e4 d8d1 e4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"kRQgZ","f":"B5k1/p4ppp/3p4/8/PR6/4r1P1/4b2P/3R2K1 b - - 0 26","m":"e2d1 b4b8 e3e8 b8e8","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"kTntY","f":"r5k1/1bp3pp/p7/1pb5/2n1q1Q1/PB6/1PP2rPP/R1B1R2K w - - 0 21","m":"e1e4 f2f1","r":556,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"kUEyD","f":"7k/1b2q1pp/p2p4/1p2p2P/1P1bP3/P6B/2R3P1/2R4K b - - 0 33","m":"e7h4 c2c8 b7c8 c1c8 h4d8 c8d8","r":596,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"kUZvr","f":"4r2k/1p5n/p2p4/6q1/5R1Q/8/PPP3PP/7K w - - 1 30","m":"h4g5 e8e1 f4f1 e1f1","r":539,"t":"backRankMate endgame mate mateIn2 short"},{"i":"kVANF","f":"r7/1p1nr1kp/p2N2p1/2pP4/P1P5/8/1P4PP/5Q1K w - - 4 28","m":"f1f3 e7e1 f3f1 e1f1","r":410,"t":"backRankMate endgame mate mateIn2 short"},{"i":"kW51u","f":"5rk1/p4ppp/8/5q2/8/4R2P/P4P2/4R1K1 b - - 3 24","m":"f8b8 e3e8 b8e8 e1e8","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"kZJBk","f":"1r2Q1k1/1r3ppp/5q2/3p1b2/B1p2P2/P1P5/1P1R2PP/K3R3 b - - 4 25","m":"b8e8 e1e8","r":571,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"khe60","f":"4r2k/2p3pp/5p2/8/8/4Q1P1/P1P4P/1R4K1 b - - 0 29","m":"e8e3 b1b8 e3e8 b8e8","r":557,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"kn84N","f":"3r2k1/p4pp1/p1N1p3/2p4p/P7/1P4P1/6PP/1R1r3K w - - 3 28","m":"b1d1 d8d1","r":418,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"kwvTu","f":"r6k/3R2pp/Q4p2/8/P1p5/4PP2/6P1/5K2 b - - 0 39","m":"a8a6 d7d8","r":479,"t":"backRankMate endgame master mate mateIn1 oneMove rookEndgame"},{"i":"kxx6K","f":"k2r3r/pp3p2/1p6/3bP2q/8/3QBPPp/PP5K/3R1R2 b - - 0 28","m":"d5f3 d3d8 h8d8 d1d8","r":513,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"l0SKV","f":"7k/4b1pp/5p2/3p1PP1/3q3P/Q7/K7/2R2B2 b - - 0 37","m":"e7a3 c1c8 a3f8 c8f8","r":592,"t":"backRankMate endgame mate mateIn2 short"},{"i":"l3r2l","f":"5rk1/pp2Qp2/5rpp/3P4/8/P7/1P4PP/4Rq1K w - - 2 30","m":"e1f1 f6f1","r":449,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"l4aGO","f":"3Q4/1r3p1p/4p3/pBk5/5B2/8/2P3PP/1R5K w - - 3 34","m":"b5d3 b7b1 f4c1 b1c1 d3f1 c1f1","r":563,"t":"backRankMate endgame hangingPiece long mate mateIn3"},{"i":"l7PDQ","f":"8/5pkp/8/r1P5/8/3p4/1PRb1PPP/6K1 w - - 0 29","m":"c2d2 a5a1 d2d1 a1d1","r":523,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"lBU10","f":"3rr1k1/5ppp/p1Q5/1pBR2b1/8/8/PPP2PPP/3Rq1K1 w - - 1 22","m":"d1e1 e8e1","r":447,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"lJdwK","f":"2kr3r/ppp3p1/8/4pB2/1n2P2P/2P5/qP1Q1P2/2KR3R b - - 0 22","m":"c8b8 d2d8 h8d8 d1d8","r":589,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"lM5Ci","f":"q6k/5ppp/8/3N4/8/1P6/1bP2PPP/4Q1K1 b - - 0 21","m":"a8d5 e1e8","r":415,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"lOA23","f":"r5k1/np1b1rp1/1b2p2P/1P1pP3/3N2Q1/N1P5/3B1qPP/R3R2K w - - 3 23","m":"e1f1 f2f1 a1f1 f7f1","r":545,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"lPfCK","f":"Q6k/2pq2pp/1n1p2p1/p7/2PN4/1PN1r2P/P5K1/3R1R2 b - - 0 24","m":"b6a8 f1f8","r":476,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"lQWJz","f":"6k1/5p2/1r3p1p/8/P1RP4/4PN2/5PPP/6K1 w - - 1 27","m":"a4a5 b6b1 c4c1 b1c1 f3e1 c1e1","r":417,"t":"backRankMate endgame long mate mateIn3"},{"i":"lSCTX","f":"1q4k1/6pp/2B1p3/7Q/4p3/P2p4/6PP/7K w - - 1 36","m":"c6e4 b8b1 h5d1 b1d1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"lSZ18","f":"rn2r1k1/p4ppp/2p5/1q5P/6P1/1P2Q3/4NP2/3R1K1R b - - 4 25","m":"e8e3 d1d8 e3e8 d8e8","r":543,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"lWRrN","f":"3r2k1/Q4pbp/6p1/4P3/1P6/8/3B1PPP/1b4K1 w - - 1 30","m":"d2c3 d8d1 c3e1 d1e1","r":454,"t":"backRankMate endgame mate mateIn2 short"},{"i":"lbu1r","f":"6k1/1p2qpp1/2p2n1p/8/1QPP4/1P3B2/r4PPP/6K1 w - - 0 23","m":"b4e7 a2a1 f3d1 a1d1 e7e1 d1e1","r":554,"t":"backRankMate endgame long mate mateIn3"},{"i":"ldvoC","f":"r3r1k1/1RR3pp/5p2/p2p1n2/3P3B/2P5/P4PPP/6K1 w - - 4 23","m":"h4g3 e8e1","r":453,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"lebS1","f":"r3R2k/pp4pp/8/8/6b1/2P5/PP6/4R1K1 b - - 1 29","m":"a8e8 e1e8","r":485,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"lh4W8","f":"4r1k1/4rppp/2R5/3p4/8/1P1q4/P5PP/5Q1K w - - 0 27","m":"f1d3 e7e1 d3f1 e1f1","r":515,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"li0Bc","f":"6k1/ppR2p1p/5n2/6p1/3r4/1P5N/P4PPP/6K1 w - - 0 24","m":"h3g5 d4d1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ll8XF","f":"7k/pp3Qpp/8/6q1/3P4/2P3Pn/PP3r1P/R3R2K b - - 0 26","m":"f2f7 e1e8 f7f8 e8f8","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"loAF7","f":"7k/6pp/8/p1q5/Pp1RP3/1b1K1P2/6PP/8 b - - 1 39","m":"b3a4 d4d8 a4e8 d8e8 c5f8 e8f8","r":459,"t":"backRankMate endgame long mate mateIn3"},{"i":"lqRNX","f":"1kr2r2/R5pp/1p6/1p6/5P2/Q7/6PP/7K w - - 0 32","m":"a3a6 c8c1","r":450,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"luY5k","f":"7k/2q3pp/8/p1Q1p1r1/8/1PP3PP/P5BK/3R4 b - - 0 27","m":"c7c5 d1d8 c5f8 d8f8","r":468,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"m0sRw","f":"rN2q1k1/5ppp/4p3/1Q6/n7/4P3/5PPP/R1R3K1 b - - 0 32","m":"e8b5 c1c8 b5e8 c8e8","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"m1K9F","f":"3r2k1/4Rppp/p1r5/1p6/8/P2b1K2/BP3PPP/4R3 b - - 7 26","m":"d3c4 e7e8 d8e8 e1e8","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"m1QLY","f":"1k2r3/ppp3pp/4Qn2/4p3/8/2P5/PP4PP/3R3K b - - 3 24","m":"e8e6 d1d8","r":435,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"m6B5a","f":"r5k1/1p3Qpp/1pn1p3/p7/4N3/3P4/P1q3PP/5R1K b - - 1 21","m":"g8h8 f7f8 a8f8 f1f8","r":475,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"m98CW","f":"1r4k1/2q2ppp/4bb2/prP5/2Qp1P2/1P4P1/3NR1BP/4R1K1 b - - 2 29","m":"e6c4 e2e8 b8e8 e1e8","r":517,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"mA0pe","f":"4r1k1/2p4p/p5p1/np1Pr3/8/B7/5PPP/2RR2K1 w - - 0 26","m":"c1c7 e5e1 d1e1 e8e1","r":438,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mDbfm","f":"2Q1rr1k/p5pp/8/1pp5/5R2/2PP2P1/P6P/5RK1 b - - 0 31","m":"e8c8 f4f8 c8f8 f1f8","r":403,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"mL1m4","f":"6k1/3r1p2/p3P2p/1pp3p1/8/1P6/P3RPPP/R2r2K1 w - - 1 28","m":"a1d1 d7d1 e2e1 d1e1","r":459,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"mLZbG","f":"6k1/ppp2ppp/2p2q2/6B1/4r3/5P2/P2R1K2/6R1 b - - 1 28","m":"f6f5 d2d8 e4e8 d8e8","r":511,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mLcrT","f":"r7/p5pk/P3B2p/8/N2p1q2/5P2/1P4PP/2rQ3K w - - 1 27","m":"d1c1 f4c1","r":474,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"mMSLB","f":"5Q1k/1p1qb1pp/3p2r1/pPpPp3/P1P1P3/4B3/6PP/5RK1 b - - 7 31","m":"e7f8 f1f8","r":582,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"mP9cc","f":"5rk1/pp4qp/2p3n1/3p3N/8/8/P5PP/5Q1K w - - 0 29","m":"h5g7 f8f1","r":468,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"mPYZB","f":"5b1k/1b4pp/p7/1p1nP3/3q4/5Q1P/PP3RP1/6K1 b - - 1 28","m":"d4c5 f3f8 c5f8 f2f8","r":562,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mPe3w","f":"r1bq1r1k/ppp3pp/3p1n2/4p3/4P3/1P3Q1P/1PP3PK/RN3R2 b - - 0 20","m":"f6d5 f3f8 d8f8 f1f8","r":411,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"mQU70","f":"r1Q3k1/1p3ppp/pN6/8/1P1r1q2/P7/4BPPb/2R2R1K b - - 0 23","m":"a8c8 c1c8 d4d8 c8d8","r":507,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"mTToF","f":"1r4k1/5p1p/4p1p1/8/8/2RBP3/5PPP/1q4K1 w - - 0 30","m":"d3b1 b8b1 c3c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mTsav","f":"2r3k1/p4ppp/4b3/8/NppRP1P1/5P1P/1P6/2K5 b - - 1 30","m":"c8c7 d4d8","r":434,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"mUBF3","f":"4r3/pp5k/2p3p1/7p/2P5/1P1q4/P5PP/3Q3K w - - 3 39","m":"d1d3 e8e1 d3f1 e1f1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"mZxYH","f":"r4rk1/pb4pp/1p2B3/2p5/3qp3/P2P1Q2/1PP3PP/1R3R1K b - - 0 20","m":"g8h8 f3f8 a8f8 f1f8","r":446,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"meHTg","f":"6k1/5ppp/pp2p3/1q4P1/3P1P2/7P/PPQ5/6K1 b - - 0 32","m":"b5d5 c2c8 d5d8 c8d8","r":473,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"mgQ8S","f":"r3r2k/p1p2R1p/3p2B1/2n4Q/2b5/2N5/PP4PP/R3q2K w - - 2 24","m":"a1e1 e8e1 f7f1 e1f1","r":409,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"mijiR","f":"r2q2k1/p1p2ppp/2p3r1/3pP3/3QRP2/8/PPP2BPP/3R2K1 b - - 0 19","m":"d5e4 d4d8 a8d8 d1d8","r":501,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mko9P","f":"3r2k1/5ppp/pp6/8/5P2/P3PQPb/6rP/5K2 b - - 4 33","m":"d8d2 f3a8 h3c8 a8c8 d2d8 c8d8","r":506,"t":"backRankMate endgame long mate mateIn3"},{"i":"mtyGI","f":"4r1k1/ppp2p2/3p2p1/2n5/5P2/5qP1/PPP4Q/1K1B4 w - - 0 27","m":"d1f3 e8e1 f3d1 e1d1","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"mu6VC","f":"3r2k1/pp4pp/2p1p3/8/2P5/8/PP3PPP/4R1K1 w - - 0 19","m":"e1e6 d8d1 e6e1 d1e1","r":447,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"mvo6U","f":"r4Q1k/pppb2pp/2n1p2q/8/3P4/2P1P1N1/P1P3PP/R4RK1 b - - 6 17","m":"a8f8 f1f8","r":484,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"mzY8d","f":"1k6/5p1p/pP1R2p1/3p4/2r5/8/PP3PPP/6K1 w - - 1 30","m":"d6d5 c4c1 d5d1 c1d1","r":425,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"n1AqV","f":"1r6/2n4p/4k1p1/5p2/4P3/7B/5PPP/2R3K1 w - - 1 34","m":"c1c7 b8b1 c7c1 b1c1","r":410,"t":"backRankMate endgame mate mateIn2 short"},{"i":"n1CQg","f":"1nR3k1/p4ppp/3r4/8/B7/8/PP3PK1/8 b - - 1 34","m":"d6d8 c8d8","r":468,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"n2GVM","f":"3r2k1/1p3ppp/2N5/p2r1qP1/1n6/1P1P4/P3QP2/1K1RR3 b - - 2 25","m":"b7c6 e2e8 d8e8 e1e8","r":517,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"n2wCP","f":"5r1k/1p3r1p/2p1b1p1/p7/8/P2QR3/1P4PP/R4q1K w - - 2 32","m":"d3f1 f7f1 a1f1 f8f1","r":453,"t":"backRankMate endgame mate mateIn2 short"},{"i":"nAOr3","f":"1r5k/6pp/3q1p2/P3n3/8/1Q6/P5PP/K1R5 b - - 2 29","m":"b8b3 c1c8 d6d8 c8d8","r":414,"t":"backRankMate endgame mate mateIn2 short"},{"i":"nC77q","f":"r4r1k/6pp/8/B7/2PPp3/Q3P3/6PP/2R2q1K w - - 11 41","m":"c1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"nCV2t","f":"5rk1/6pp/p1nbB3/2p1p1B1/2p1P3/P2qP1PP/5Q1K/5R2 b - - 6 27","m":"g8h8 f2f8 d6f8 f1f8","r":502,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"nF5Sv","f":"4rr1k/1pp3np/1n3ppQ/8/5RbP/1B6/PPP3PN/1K2q2R w - - 4 24","m":"h1e1 e8e1","r":486,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"nFTWy","f":"k7/pp6/8/8/3r4/2n3P1/7P/3B1RK1 b - - 0 39","m":"c3d1 f1f8 d4d8 f8d8","r":406,"t":"backRankMate endgame mate mateIn2 short"},{"i":"nKJ07","f":"Q5qk/p4Rpp/2p5/4p3/4P3/3Pb2P/PPP3P1/5R1K b - - 0 20","m":"g8a8 f7f8 a8f8 f1f8","r":524,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"nL0Aq","f":"5bk1/pQp2p1p/5rp1/7n/8/2N5/PPP2qPP/R3R2K w - - 0 22","m":"e1f1 f2f1 a1f1 f6f1","r":593,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"nLQqq","f":"3r1rk1/pp3p2/1np3p1/8/2P2qN1/1P5R/P5PP/5R1K w - - 0 32","m":"f1f4 d8d1 f4f1 d1f1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"nSl61","f":"4r3/1pp2kp1/1pn4p/3n4/5N2/1QP5/PP1N2PP/R3q2K w - - 7 26","m":"a1e1 e8e1 d2f1 e1f1","r":556,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"nWTpU","f":"7k/pp4pp/2b2r2/3pRp2/5P2/3r3P/P6P/4R2K b - - 3 29","m":"d3h3 e5e8 c6e8 e1e8 f6f8 e8f8","r":424,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"nWTys","f":"r3r1k1/p4ppp/1pp1nq2/3p4/3N4/1PP1Q3/P4PPP/R3R1K1 b - - 1 20","m":"e6c5 e3e8 a8e8 e1e8","r":552,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ndOR8","f":"r1b1r1k1/ppp2ppp/8/4N3/8/P1P4P/3R1PP1/2K2B1R b - - 0 16","m":"e8e5 d2d8 e5e8 d8e8","r":445,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ndq11","f":"3r2k1/3Q1ppp/8/3n4/p7/P7/5PPP/2R3K1 b - - 0 31","m":"d8d7 c1c8 d7d8 c8d8","r":448,"t":"backRankMate endgame mate mateIn2 short"},{"i":"nfCnZ","f":"r5k1/pb1p1ppp/5B2/2p5/8/1P3P2/P1P1Q1PP/qN2RK2 b - - 0 20","m":"a1f6 e2e8 a8e8 e1e8","r":530,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"njo2I","f":"8/6k1/6pp/1p1rp3/8/P1rpQP2/3R1PPP/7K w - - 0 48","m":"e3e4 c3c1 d2d1 c1d1 e4e1 d1e1","r":490,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"nnEIk","f":"r1b2rk1/pp4pp/8/1pb5/4R3/2N5/PPP3PP/R1B1Qq1K w - - 2 17","m":"e1f1 f8f1","r":415,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ntoQS","f":"3r1Q1k/pp4pp/4B3/2p3pP/1q1r4/2N5/PPK3P1/3R1R2 b - - 1 31","m":"d8f8 f1f8","r":418,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"nuKGt","f":"4b3/pkp3b1/1pn5/1N1QP3/1q1p1B2/8/2P3PP/4R2K w - - 2 31","m":"e5e6 b4e1","r":570,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"o1AW1","f":"5r1k/1b4p1/5r1p/p7/4p1B1/2Rp4/PP4PP/3QRq1K w - - 6 31","m":"e1f1 f6f1 d1f1 f8f1","r":569,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"o94xQ","f":"r3r1k1/pp3pbp/2pq2p1/4Pb2/5Q2/8/PP3PPP/R1B1R1K1 w - - 0 17","m":"e5d6 e8e1","r":422,"t":"backRankMate hangingPiece master masterVsMaster mate mateIn1 middlegame oneMove"},{"i":"oBRIX","f":"r3rQ1k/pp4pp/2p5/6p1/2Pq3P/1P6/P4RK1/5R2 b - - 3 26","m":"e8f8 f2f8 a8f8 f1f8","r":492,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"oGCvh","f":"5rk1/R4pbp/6p1/4p3/4P3/2P4P/1r3PPB/3R2K1 w - - 0 25","m":"d1d7 b2b1 d7d1 b1d1","r":452,"t":"backRankMate endgame mate mateIn2 short"},{"i":"oGgxP","f":"1rq4k/1pb2Qpp/2n5/2P1p3/3pR3/P2P2P1/5P1P/R5K1 b - - 2 29","m":"c7d8 f7e8","r":585,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"oHZlo","f":"7k/3n1Bpp/p7/1p3pq1/8/P4P2/4RP2/7K b - - 3 32","m":"g5f6 e2e8 d7f8 e8f8","r":561,"t":"backRankMate endgame mate mateIn2 short"},{"i":"oJ8K7","f":"6k1/1p3pp1/2p4p/8/1PP5/2P5/2r3PP/R6K w - - 1 34","m":"a1a3 c2c1","r":447,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"oJGOi","f":"1q1Q2kr/5ppp/p7/1pB1P3/8/8/PP3PPP/1K1R4 b - - 0 26","m":"b8d8 d1d8","r":535,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"oJIPW","f":"3r2k1/R4ppp/p3p3/1p1p4/8/PP4PP/6PK/8 b - - 2 33","m":"d8d6 a7a8 d6d8 a8d8","r":455,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"oOvhV","f":"r5k1/5ppp/pp3q2/2n5/P2p3n/1P3P2/2P1QPBP/4R2K b - - 9 24","m":"h4g2 e2e8 a8e8 e1e8","r":430,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"oPhfj","f":"rn1R2k1/pbp2ppp/1p6/4r3/1PP5/4B3/P3BPPP/4K2R b K - 1 15","m":"e5e8 d8e8","r":400,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"oT1Iu","f":"rn1q1rk1/2p2ppp/pp3b2/3p4/3P4/2N2N2/PPP1QPPP/R3R1K1 b - - 1 13","m":"f8e8 e2e8 d8e8 e1e8","r":409,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"oTYVw","f":"r1b3k1/pp3ppp/8/3rb3/5P2/P7/1P1B2PP/1R2R1K1 b - - 0 18","m":"e5f6 e1e8","r":400,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"oYHBP","f":"rn3q1k/pp4pp/3p2r1/2bN4/2B5/5QP1/PPP2P2/R3R1K1 b - - 0 17","m":"f8f3 e1e8 f3f8 e8f8","r":446,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"oZYUp","f":"3r2k1/p4ppp/3q1P2/2p2P2/2p5/4Q3/PPP2P1P/2K1R3 b - - 2 24","m":"d6f6 e3e8 d8e8 e1e8","r":567,"t":"backRankMate endgame master mate mateIn2 sacrifice short"},{"i":"obnrS","f":"3rR2k/p5pp/2p5/5p2/1P6/P7/2K1R3/8 b - - 1 44","m":"d8e8 e2e8","r":401,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"okCZb","f":"1r3rk1/5p1p/6p1/p1q1Pp2/1Pn2P2/2PQ3R/2N3PP/7K w - - 0 31","m":"b4c5 b8b1 c2e1 b1e1 d3f1 e1f1","r":468,"t":"backRankMate endgame long mate mateIn3"},{"i":"omvin","f":"4Q1k1/1p2Rppp/p7/1q6/8/1P5P/P4PPK/8 b - - 0 27","m":"b5e8 e7e8","r":442,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"opICG","f":"1k6/ppp5/8/3p2q1/8/1PP5/P3K3/5R2 b - - 4 37","m":"g5g6 f1f8 g6e8 f8e8","r":505,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"orLv7","f":"r5k1/pp4pp/2p1Q3/4R3/8/3P3P/PPq3PK/8 b - - 1 24","m":"g8h8 e6e8 a8e8 e5e8","r":461,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"osRAB","f":"4r1k1/p1p2ppp/2p2Bq1/8/5N2/2P5/P1P2PPP/R2b2K1 w - - 0 18","m":"f4g6 e8e1","r":483,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"owIRT","f":"1Q3rk1/p2R1ppq/1N5p/8/8/1P3P2/2P3PP/1K1R4 b - - 0 28","m":"f8b8 d7d8 b8d8 d1d8","r":567,"t":"backRankMate endgame mate mateIn2 short"},{"i":"owkrb","f":"8/4Bk2/5pp1/3r3p/2p5/4P3/1r3PPP/3R2K1 w - - 0 31","m":"d1d5 b2b1 d5d1 b1d1","r":470,"t":"backRankMate endgame mate mateIn2 short"},{"i":"oy3Sf","f":"r1b1r1k1/p3q1bp/2PpN1p1/1p6/1P6/P4Q2/2P2PPP/1R2R1K1 w - - 1 23","m":"e6g7 e7e1 b1e1 e8e1","r":557,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"oyZiW","f":"6k1/2Q2p1p/pn2p1p1/1p1qb3/3P4/PP2B3/5PPP/6K1 w - - 0 27","m":"d4e5 d5d1","r":514,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"p0tnV","f":"6k1/5ppp/pR6/3Pr3/2r5/3K4/q2N1P2/8 b - - 1 37","m":"c4c2 b6b8 c2c8 b8c8 e5e8 c8e8","r":487,"t":"backRankMate endgame long mate mateIn3"},{"i":"p2dtd","f":"3qQ2k/p1p3pp/1b6/8/8/2P2B2/PP4PP/4R2K b - - 0 26","m":"d8e8 e1e8","r":549,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"pA0Wp","f":"2k2r2/pp1n3p/2p1Q1p1/3pPr2/3P4/2P5/PP5P/K5Rq w - - 0 29","m":"g1h1 f5f1 h1f1 f8f1","r":550,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pAH8l","f":"k1rr4/pp1NbQ2/8/3Rp3/4P2p/7P/PP3PP1/K1qR4 w - - 2 29","m":"d1c1 c8c1","r":420,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"pAyNg","f":"2kr4/p1B1p2p/1p3bp1/2p5/4Q3/2P5/PP3PPP/R2r2K1 w - - 1 21","m":"a1d1 d8d1 e4e1 d1e1","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pBaBn","f":"r1kr4/p3Q2R/bp2p1p1/4P3/8/2B5/PP3PPP/2Rq2K1 w - - 1 28","m":"c1d1 d8d1 c3e1 d1e1","r":409,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"pCf60","f":"6k1/1p1b1ppp/1q2p3/3pPn2/1n1P4/RP3N1P/1QrNBPP1/6K1 b - - 0 22","m":"c2b2 a3a8 d7c8 a8c8 b6d8 c8d8","r":539,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"pCrSz","f":"1k1r3r/p1R2R2/7p/1p4p1/4P1Q1/1P1q2PP/PP6/1K6 w - - 0 29","m":"b1a1 d3d1 g4d1 d8d1 c7c1 d1c1","r":587,"t":"backRankMate endgame long mate mateIn3"},{"i":"pE4Zj","f":"1k3r1r/ppp3pp/3p4/4p3/4P3/1PNP4/1PP1Q1PP/R3bq1K w - - 3 21","m":"e2f1 f8f1","r":421,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"pGU25","f":"r2r2k1/p3Rppp/1p2bn2/8/2B5/5N2/PP3PPP/R1B3K1 w - - 1 16","m":"c4e6 d8d1 f3e1 d1e1","r":538,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"pMpLs","f":"r7/p2b1kpp/4p3/3r1p2/5Q2/1P6/P3qPPP/4R1K1 w - - 0 26","m":"e1e2 d5d1 e2e1 d1e1","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pNlqX","f":"6k1/5ppp/R3p3/8/1P2n1P1/5N2/1P3PPK/3r4 b - - 2 30","m":"e4f2 a6a8 d1d8 a8d8","r":422,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pUGUs","f":"4rb1r/ppp2kpp/5n2/3p2B1/1Q1p4/8/PPP2PPP/RN4K1 w - - 0 14","m":"b4d4 e8e1","r":482,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"pYt64","f":"2r3r1/8/3Rp1k1/3bBp1p/1R4p1/2N1P3/5PPP/6K1 w - - 3 34","m":"c3d5 c8c1","r":489,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"pZiKO","f":"1r1r2k1/p5pp/4R3/5N2/8/2P5/bb3PPP/R5K1 w - - 0 25","m":"a1a2 d8d1 e6e1 d1e1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"paaii","f":"3r2k1/p1p3p1/7p/4pR2/4b3/3P4/PPP3PP/7K w - - 0 23","m":"d3e4 d8d1 f5f1 d1f1","r":418,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"paewr","f":"6k1/5ppp/8/p2p4/P1P2P2/2PnrNP1/6P1/1R3K2 b - - 0 29","m":"d5c4 b1b8 e3e8 b8e8","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pcg41","f":"5rk1/ppp3pp/8/4R2P/6b1/3P3P/PPPR4/1K6 w - - 1 24","m":"h3g4 f8f1 e5e1 f1e1 d2d1 e1d1","r":428,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"pdg4E","f":"4r1k1/5ppp/p7/1p2Q3/2p5/2P5/PP3PPP/3R2K1 b - - 0 27","m":"e8e5 d1d8 e5e8 d8e8","r":414,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"pdxWR","f":"b5k1/2p2ppp/1p3n2/1P6/8/8/3bBPPP/3R2K1 b - - 1 23","m":"d2f4 d1d8 f6e8 d8e8","r":532,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"pkigx","f":"3r2k1/pQ3pp1/6bp/3r4/8/8/5PPP/q3R1K1 w - - 0 27","m":"e1a1 d5d1 a1d1 d8d1","r":501,"t":"backRankMate endgame mate mateIn2 short"},{"i":"plNB3","f":"6k1/pp3ppp/2p5/8/PB3P2/5Q1P/1P2pqP1/3R3K b - - 0 30","m":"f2f3 d1d8","r":557,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"pnYCP","f":"4r2k/pp1n1ppp/3p1q1N/2bP4/6Q1/8/PP4PP/R1B2R1K w - - 8 22","m":"f1f6 e8e1 f6f1 e1f1","r":519,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ptxMC","f":"3rR2k/2p3pp/p1Q2b2/P7/1P6/5PN1/3q1P1P/6K1 b - - 4 30","m":"d8e8 c6e8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"puxsn","f":"r6k/6pp/8/8/P7/4PR2/4r1PP/6K1 b - - 2 33","m":"a8a4 f3f8","r":408,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"pvQQp","f":"1q4k1/p1r2ppp/8/P2n4/2P5/6P1/1Q3P1P/3RR1K1 b - - 0 24","m":"b8b2 e1e8","r":497,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"pwgBR","f":"r3Q2k/p5pp/1p4n1/3p3P/1P6/P7/3q1PP1/2R1R1K1 b - - 2 29","m":"a8e8 e1e8 g6f8 e8f8","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"pyxZp","f":"3r2k1/2R2ppp/pp6/8/8/1P3P2/1P3P1P/6K1 b - - 0 22","m":"d8d3 c7c8 d3d8 c8d8","r":453,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"q1sQ2","f":"4R3/p1prbpQ1/1p2k3/4P3/8/8/PB3rPP/5R1K w - - 3 34","m":"f1f2 d7d1 f2f1 d1f1","r":564,"t":"backRankMate endgame mate mateIn2 short"},{"i":"q4Dfz","f":"1k6/ppp2p2/8/4q3/2B5/P1NP1Pn1/1r5r/1R1KR3 b - - 1 35","m":"e5c3 e1e8","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"q4caz","f":"5r2/5rpk/7p/2N5/1P6/p1P5/P3R1PP/4R2K w - - 1 42","m":"b4b5 f7f1 e1f1 f8f1","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"q5CMS","f":"3r2k1/p3pp1p/2p1b1pb/8/4P3/4N3/PPP3PP/1K3B1R w - - 0 18","m":"e3c4 d8d1","r":561,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"q5yDF","f":"6k1/1p1r1ppp/P1p1p3/8/2P5/P5P1/5P1P/1R4K1 b - - 0 32","m":"b7a6 b1b8 d7d8 b8d8","r":440,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"q6x89","f":"5r1k/p5p1/7p/1Q4q1/8/1P6/P4rPP/2R2R1K w - - 2 25","m":"b5g5 f2f1 c1f1 f8f1","r":494,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"q7Ocr","f":"r3r1k1/pp4pp/6q1/2bp4/5P2/6QR/PP4PP/1RB4K w - - 2 23","m":"g3g6 e8e1","r":414,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"qGIkC","f":"6k1/6p1/P6p/2Qbr3/3P4/4qP2/6PP/R6K w - - 0 32","m":"a6a7 e3e1 a1e1 e5e1","r":507,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"qIBO6","f":"8/5Np1/p5p1/3nR3/Pr4k1/8/5PPP/6K1 w - - 3 35","m":"e5d5 b4b1 d5d1 b1d1","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"qNXiR","f":"2rR2k1/pb3ppp/1p6/nN4q1/2P5/P7/B3QPPP/4R1K1 b - - 0 22","m":"c8d8 e2e8 d8e8 e1e8","r":545,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"qOPML","f":"3r2k1/R4ppp/4p3/4r3/8/8/P4PPP/5RK1 b - - 0 29","m":"d8d2 a7a8 d2d8 a8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"qTPMk","f":"r4rk1/1p3ppp/2p5/p3PP2/1n4P1/1P5P/q1PQ4/1NKR3R b - - 0 22","m":"f8d8 d2d8 a8d8 d1d8","r":531,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"qWDEE","f":"rnbk1bqB/ppppn2p/8/8/8/2N2Q2/PPP3PP/R4RK1 b - - 0 15","m":"g8h8 f3f8 h8f8 f1f8","r":479,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"qcue1","f":"3rr1k1/1p3ppp/p7/8/8/3RR3/PP1p2P1/3B2K1 b - - 3 30","m":"d8d3 e3e8","r":548,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"qfgh5","f":"2r5/pk5p/bpR1q3/3pN3/8/1P6/P5PP/7K w - - 0 35","m":"c6e6 c8c1","r":469,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"qfkv1","f":"3r1Q1k/pp4pp/1nq5/2p5/4N3/2P3P1/PP4PP/5RK1 b - - 2 20","m":"d8f8 f1f8","r":497,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"qfrQX","f":"4R2k/6pp/p5q1/5p2/Q7/8/P4PPP/5K2 b - - 0 41","m":"g6e8 a4e8","r":444,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove queenEndgame"},{"i":"qiPJo","f":"r1r3k1/p2R1ppp/np2p1b1/1Np1P3/2P5/BP6/P4PPP/3R2K1 b - - 5 23","m":"a6b8 d7d8 c8d8 d1d8","r":547,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"qiz2R","f":"5r1k/p3r1pp/1p6/2pRPP2/8/8/7P/7K b - - 0 41","m":"f8f5 d5d8 e7e8 d8e8 f5f8 e8f8","r":451,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"qkQuD","f":"8/p1r5/5pk1/1p4p1/8/1P3R2/r4PPP/2R3K1 w - - 4 34","m":"c1c7 a2a1 c7c1 a1c1","r":431,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"qlPQR","f":"1r2r1k1/p3qppp/b7/2pp4/2P1P3/1P6/P4PPP/R1BQR1K1 w - - 0 22","m":"e4d5 e7e1 d1e1 e8e1","r":526,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"qlllW","f":"r1b3k1/p3nppp/4p3/1p6/2pRPP2/2P1r1P1/PP4BP/R6K b - - 0 18","m":"e3e2 d4d8","r":479,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"qs8GO","f":"4r1k1/p3Rppp/3p4/2p5/P2n4/4N3/3P1PPP/1R4K1 b - - 0 23","m":"e8e7 b1b8 e7e8 b8e8","r":581,"t":"backRankMate endgame mate mateIn2 short"},{"i":"qxRHu","f":"5rk1/5ppp/8/2Rn4/2R2q2/5N2/5PPP/6K1 b - - 2 27","m":"f8a8 c5c8 a8c8 c4c8","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"qzuO7","f":"3r4/4R2p/6pk/8/2P5/1P2qP2/P5PP/7K w - - 0 38","m":"e7e3 d8d1 e3e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"r2HCM","f":"rn1Rn1k1/1Q2Bppp/8/pq6/3P4/P7/1P3PPP/5RK1 b - - 0 22","m":"b5b7 d8e8","r":583,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"r4AG7","f":"6k1/1r5p/p1pPPbpB/8/4R3/8/P4PPP/6K1 w - - 1 27","m":"e6e7 b7b1 h6c1 b1c1 e4e1 c1e1","r":563,"t":"backRankMate endgame long mate mateIn3"},{"i":"r4K71","f":"1r4k1/5ppp/p2R4/2p5/1pP2q2/1P3P2/P5PP/3Q3K b - - 0 32","m":"a6a5 d6d8 b8d8 d1d8","r":557,"t":"backRankMate endgame mate mateIn2 short"},{"i":"r5KjY","f":"6k1/ppp2pp1/5n1p/5b2/P7/2P1N3/1P1R1PPP/2r1rBK1 b - - 3 20","m":"f5h7 d2d8 f6e8 d8e8","r":508,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"r7MO9","f":"3R4/5ppk/7p/n3N3/Pp6/1Pb3B1/1r3PPP/6K1 w - - 8 32","m":"e5f7 b2b1 d8d1 b1d1","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"rCjkf","f":"7k/2p3pp/p5r1/3n1qB1/2pP4/8/PP3PQ1/6RK b - - 11 32","m":"d5f4 g2a8 f5c8 a8c8","r":581,"t":"backRankMate endgame mate mateIn2 short"},{"i":"rHqyZ","f":"4r3/p5kp/3p2p1/2pB1R2/P1P5/8/P2Q2PP/4q2K w - - 1 33","m":"d2e1 e8e1 f5f1 e1f1","r":505,"t":"backRankMate endgame mate mateIn2 short"},{"i":"rHvEc","f":"3r2k1/ppp2ppp/8/1Q6/4r3/4b3/PPP3PP/2K2B1R w - - 0 16","m":"c1b1 d8d1","r":598,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"rLSgJ","f":"2r2rk1/1p2b1pp/p2p4/3P2n1/2P3Q1/4R3/P5PP/4Rq1K w - - 2 21","m":"e1f1 f8f1","r":576,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"rLq5V","f":"r1bR3k/1p3Bpp/p4n2/2p3q1/8/8/PPP2PPP/RN4K1 b - - 2 21","m":"f6e8 d8e8","r":525,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"rTbFz","f":"2b1r1k1/4Qppp/p2p4/3Pp3/8/4B3/qP3PPP/2RR2K1 b - - 0 23","m":"e8e7 c1c8 e7e8 c8e8","r":463,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"rUUzS","f":"3Q2k1/r1b2ppp/pnq5/4p3/1P4B1/P1B1P3/5PPP/3R2K1 b - - 7 28","m":"c7d8 d1d8 c6e8 d8e8","r":507,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"rWxAu","f":"4r1k1/5ppp/pR6/2p5/P1p5/2P4P/5KP1/8 b - - 0 29","m":"e8e6 b6b8 e6e8 b8e8","r":597,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"rXR9K","f":"Q7/p1p2pk1/r5p1/4q1np/8/2PR4/5PPP/4R1K1 w - - 2 33","m":"e1e5 a6a1 d3d1 a1d1 e5e1 d1e1","r":504,"t":"backRankMate endgame long mate mateIn3"},{"i":"rXUVg","f":"2r2k2/1pr3qR/4p3/p2p1pN1/Pn6/1P2P2Q/5PPP/1R4K1 w - - 1 30","m":"h7g7 c7c1 b1c1 c8c1","r":557,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"rYmTn","f":"6k1/5ppp/2R1p3/3pP3/3P4/rN2P3/6PP/6K1 b - - 0 27","m":"a3b3 c6c8","r":423,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"rd8KV","f":"2r3k1/p5pp/1p6/4q3/3R4/P7/1P4PP/4R2K w - - 0 27","m":"e1e5 c8c1 d4d1 c1d1 e5e1 d1e1","r":409,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"rj1mO","f":"1k6/1p4R1/2r2n1p/p4B2/8/8/PP3PPP/6K1 w - - 3 30","m":"g7g6 c6c1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"rnVr4","f":"r4Q1k/6pp/pp6/8/4b2q/4N1b1/PPPr2PP/R4RBK b - - 2 27","m":"a8f8 f1f8","r":420,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"rpWQW","f":"4r1k1/pp3p1p/3R2p1/8/8/2P4P/PP2rPPB/1R4K1 w - - 4 24","m":"d6d7 e2e1 b1e1 e8e1","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"rqkUz","f":"2r2Q1k/pB1r2pp/8/2n5/2Pq4/3P4/P1P3PP/R4R1K b - - 4 25","m":"c8f8 f1f8","r":457,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"rrO4P","f":"r5k1/1pq1bppb/r1p5/2P2P1p/1B1PQ3/6P1/7P/4RRKB b - - 1 33","m":"e7f6 e4e8 a8e8 e1e8","r":461,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"rv2Sa","f":"r1b3k1/pp3ppp/4p3/8/3R4/1P2nN2/KP2P1PP/5r1R b - - 1 18","m":"f1h1 d4d8","r":443,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"s3Bx8","f":"r1br2k1/pp3ppp/2p5/8/4n3/P1P5/2P2PPP/R1B1R1K1 w - - 0 15","m":"e1e4 d8d1 e4e1 d1e1","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"s5G3k","f":"3Q1rk1/5ppp/2p5/8/p1r5/P6P/4RPP1/4R1K1 b - - 0 31","m":"f8d8 e2e8 d8e8 e1e8","r":515,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"s5NwE","f":"rnb1R2k/pp1p1rpp/3P3b/2p3q1/2B2n2/2N4P/PP4P1/R1BQ2K1 b - - 1 18","m":"f7f8 e8f8","r":593,"t":"backRankMate hangingPiece mate mateIn1 oneMove opening"},{"i":"s8Im4","f":"6k1/1R1n1ppp/4b3/2p1P3/2P1P3/3r3P/6PK/8 b - - 0 27","m":"d7e5 b7b8 e6c8 b8c8 d3d8 c8d8","r":405,"t":"backRankMate endgame long mate mateIn3"},{"i":"s9UDO","f":"2R2bk1/3n1ppp/3Bp3/3p4/2pP4/2P1P3/r2NNPPP/6K1 w - - 5 22","m":"d2f3 a2a1 e2c1 a1c1 f3e1 c1e1","r":584,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"sD22R","f":"4b3/p1k4p/2p3n1/1p2r3/4P3/2P2PR1/PPBRNr2/2K3N1 w - - 3 27","m":"c1d1 f2f1","r":457,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"sFBJ7","f":"r6k/4R3/2r3p1/3p3p/1p1P4/pPP4R/P4PPP/6K1 w - - 0 31","m":"c3b4 c6c1 e7e1 c1e1","r":482,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"sLs8l","f":"Q1qr2k1/5ppp/2pRp3/p3Pb2/P7/2P3P1/1P3PBP/3R2K1 b - - 0 27","m":"c8a8 d6d8 a8d8 d1d8","r":458,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"sMZKs","f":"7k/p4pp1/4p1p1/8/5P2/8/Pr3PPP/2R3K1 w - - 2 28","m":"c1c7 b2b1 c7c1 b1c1","r":436,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"sMqp2","f":"6k1/1pp2ppp/P7/8/P4K2/B1Pr4/7r/1R6 b - - 0 30","m":"b7a6 b1b8 d3d8 b8d8","r":583,"t":"backRankMate endgame mate mateIn2 short"},{"i":"sN3t0","f":"5r2/3R1ppk/p3pb2/8/1p2N3/3R4/PPr2PPP/6K1 w - - 0 20","m":"d3b3 c2c1 d7d1 c1d1","r":537,"t":"backRankMate endgame mate mateIn2 short"},{"i":"sOxjx","f":"1r4k1/5ppp/1Q2p3/p2rP3/P1RP4/8/5PPP/6K1 b - - 0 28","m":"b8b6 c4c8 d5d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"sZkqT","f":"r1b3k1/pp3ppp/8/4b3/4R3/P5P1/1P3PKP/RNBr4 b - - 2 16","m":"e5f6 e4e8","r":412,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"sZpeX","f":"2r3k1/p4pp1/1p2p2p/4P3/3b4/2N5/PP2Q1PP/7K w - - 3 27","m":"c3b5 c8c1 e2d1 c1d1","r":583,"t":"backRankMate endgame mate mateIn2 short"},{"i":"siVqd","f":"4r1k1/5pp1/p6p/2pQ4/P2b1P2/3P4/6PP/1R2q2K w - - 4 29","m":"b1e1 e8e1","r":428,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"slAZD","f":"8/8/8/8/2rP4/1k6/5PPP/R5K1 w - - 0 52","m":"a1c1 c4c1","r":416,"t":"backRankMate endgame hangingPiece master masterVsMaster mate mateIn1 oneMove rookEndgame"},{"i":"soDCO","f":"4n1k1/p4p1p/1r4p1/5B2/5B2/P7/R4PPP/6K1 w - - 0 25","m":"f5h3 b6b1 f4c1 b1c1","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"sptMR","f":"r1b1r1k1/3nqpp1/2pp3p/pp1n4/3P2PP/3Q1N2/PPPN1P2/2KR1B1R w - - 0 16","m":"d1e1 e7e1 f3e1 e8e1","r":470,"t":"backRankMate mate mateIn2 opening short"},{"i":"sz2n2","f":"k4b2/pp1b1q2/5r2/3P1p2/8/1P2R3/P4PPP/1K2R3 b - - 0 37","m":"f7d5 e3e8 d7e8 e1e8 d5d8 e8d8","r":572,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"t2GQe","f":"r4rk1/pp2bppp/3p4/3QpP2/8/8/PPq2PPP/R1BR2K1 w - - 0 15","m":"d5b7 c2d1","r":589,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"t4Qxf","f":"r1Q1k2r/pp1pppbp/6p1/3q4/8/5N2/P2B1PPP/2RK1B1R b kq - 0 14","m":"a8c8 c1c8","r":516,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"t8pPs","f":"R7/6pk/p3p3/2B1P2p/1n6/8/r5PP/7K w - - 0 34","m":"c5b4 a2a1 b4e1 a1e1","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"tAE7j","f":"6k1/2p2pp1/p6p/3p4/3P4/1P6/r4PPP/2R3K1 w - - 0 28","m":"c1c7 a2a1 c7c1 a1c1","r":435,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"tC0Xj","f":"2b2rk1/1p4pp/4p3/r7/4p3/1BQ5/P5PP/4Rq1K w - - 2 30","m":"e1f1 f8f1","r":566,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"tC4py","f":"7k/p5pp/2q2p2/4p3/4NP2/P3PKB1/1r4PP/3R4 b - - 4 28","m":"e5f4 d1d8 c6e8 d8e8","r":545,"t":"backRankMate endgame mate mateIn2 short"},{"i":"tGde5","f":"2r3k1/5ppp/4p3/p2p4/3P4/4PP1P/PR4P1/6K1 b - - 2 27","m":"c8c3 b2b8 c3c8 b8c8","r":421,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"tHRG1","f":"3R4/6bk/r3p1p1/4N2p/Nn6/7P/5PPB/6K1 w - - 0 37","m":"a4c5 a6a1 d8d1 a1d1","r":446,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"tHhwD","f":"6k1/2p2ppp/5q2/2P2b2/3R4/5Q2/5PPP/6K1 b - - 0 25","m":"f6d4 f3a8 f5c8 a8c8 d4d8 c8d8","r":577,"t":"backRankMate endgame long mate mateIn3"},{"i":"tJ8UG","f":"r1b1r1k1/1p2qn1p/p3Nbp1/2pB1p2/3P4/2P5/PP1Q1PPP/RN2R1K1 w - - 1 20","m":"e6f4 e7e1 d2e1 e8e1","r":542,"t":"backRankMate mate mateIn2 opening short"},{"i":"tN5zP","f":"6k1/pp3ppp/1b6/3p4/1P1N2P1/P2qPP1b/1B5P/2Q3K1 b - - 0 24","m":"b6d4 c1c8","r":527,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"tTfvM","f":"N6k/1p4pp/p4r2/7q/7b/P3P2P/1P4P1/3R1RK1 b - - 0 25","m":"h5e2 d1d8 f6f8 f1f8","r":577,"t":"backRankMate endgame mate mateIn2 short"},{"i":"tUkqu","f":"5r2/6kp/4B1p1/8/4prN1/1P6/6PP/R3R2K w - - 2 39","m":"e1e3 f4f1 a1f1 f8f1","r":428,"t":"backRankMate endgame mate mateIn2 short"},{"i":"tjjtd","f":"r5k1/ppp2ppp/6q1/3p1n2/3P4/P1N4P/1PP1QPP1/4R1K1 b - - 0 19","m":"f5d4 e2e8 a8e8 e1e8","r":483,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"tpjig","f":"2r1r2k/6pp/p1Pn1p2/1p1P4/8/1P6/P1P2qPP/RN3R1K w - - 0 22","m":"f1f2 e8e1 f2f1 e1f1","r":496,"t":"backRankMate endgame mate mateIn2 short"},{"i":"txehK","f":"8/pb3p1p/8/2p2k2/2P2pN1/5P2/PP2r1PP/3R3K w - - 1 28","m":"d1d7 e2e1","r":471,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ty5ko","f":"2kr1b1r/pp3ppp/4pB2/8/2p1B3/6Q1/P3NPPP/5qK1 w - - 0 18","m":"g1f1 d8d1","r":401,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"u3qhY","f":"2R5/5ppk/1p5p/rn6/P7/4P3/5PPP/6K1 w - - 1 41","m":"a4b5 a5a1 c8c1 a1c1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"u4VO0","f":"6k1/8/p1Np2p1/3Pp2p/4P3/2b5/r4PPP/1R4K1 w - - 0 27","m":"b1b7 a2a1 b7b1 a1b1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"u8Fqi","f":"r7/1b3kpp/3qpp2/1p6/2p1P3/4Q3/1P3PPP/3R2K1 w - - 0 35","m":"d1d6 a8a1 d6d1 a1d1 e3e1 d1e1","r":491,"t":"backRankMate endgame long mate mateIn3"},{"i":"uAxyx","f":"r2r2k1/pbp2ppp/1pn1p3/8/4P3/2N2B1P/PPPR2P1/2KR4 b - - 5 18","m":"c6e5 d2d8 a8d8 d1d8","r":495,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"uGsX3","f":"1rb1r1k1/p4pp1/4p2p/4N3/2p1QP2/P7/2P2PPP/1q3RK1 w - - 0 24","m":"f1b1 b8b1 e4e1 b1e1","r":424,"t":"backRankMate endgame mate mateIn2 short"},{"i":"uH4b1","f":"3r2k1/5ppp/4p3/pp2P3/2p2P1P/2P3P1/PP2R1Q1/1qr2NK1 b - - 0 30","m":"d8d1 g2a8 d1d8 a8d8","r":493,"t":"backRankMate endgame mate mateIn2 short"},{"i":"uJOqu","f":"2r3kb/p4p1p/Rp1np1pB/8/3P2N1/5R2/P4PPP/2r3K1 w - - 1 27","m":"h6c1 c8c1","r":470,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"uP842","f":"5q2/2pr2kp/2p1p1p1/8/8/6Q1/P5PP/5R1K w - - 0 32","m":"f1f8 d7d1 g3e1 d1e1 f8f1 e1f1","r":462,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"uQH5e","f":"4r1k1/p2R1ppp/1p3r2/2p1N3/Pn3PP1/1P5P/6B1/5K2 b - - 0 27","m":"e8e5 d7d8 e5e8 d8e8","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"uUh6E","f":"3r1r1k/2p1n1pp/8/pp6/4P3/P4P1B/1PQ2RPP/RN1q3K w - - 1 22","m":"c2d1 d8d1 f2f1 d1f1","r":458,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"uVTeE","f":"3r2k1/1p4pp/5p2/1R1r4/8/P3P3/5PPP/R5K1 w - - 0 28","m":"b5b7 d5d1 a1d1 d8d1","r":494,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"uYHOK","f":"r1bR2k1/5ppp/p1p5/2p5/8/5N2/PPP1rPPP/2K4R b - - 1 17","m":"e2e8 d8e8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"uaDs3","f":"4rrk1/ppp1q1pp/3p4/1Q1P1p2/5P2/2N3R1/Pn4PP/R6K w - - 2 26","m":"b5b2 e7e1 a1e1 e8e1","r":512,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"ubxFW","f":"2kr3r/ppp1b2p/2B3R1/7Q/8/2p5/P1P2PPP/R1Bq2K1 w - - 1 16","m":"h5d1 d8d1","r":447,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"uc8UG","f":"6k1/5ppp/4p3/p3Pn2/2R5/P1B3P1/5PKP/3r4 b - - 4 29","m":"d1c1 c4c8","r":466,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ucvJL","f":"3kn3/1p2Rr2/1ppP4/r6p/8/6B1/1P1R1PPP/6K1 w - - 0 31","m":"e7f7 a5a1 d2d1 a1d1","r":532,"t":"backRankMate endgame mate mateIn2 short"},{"i":"uf9Kh","f":"rn4k1/ppp2ppp/8/4N1q1/4b3/2P5/P1P2PPP/1K1R1B1R b - - 0 15","m":"g5e5 d1d8 e5e8 d8e8","r":400,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"uiltr","f":"6k1/p4ppp/2p1r3/4p3/4Q3/BP1b3P/P5P1/3R3K b - - 0 29","m":"d3e4 d1d8 e6e8 d8e8","r":482,"t":"backRankMate endgame mate mateIn2 short"},{"i":"uoY4j","f":"2r2rk1/pp2pp2/3p2p1/3B2Np/1Q2P1nP/8/PP6/K1q1R3 w - - 2 30","m":"e1c1 c8c1","r":467,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"uocMW","f":"r5k1/1p3Qpp/4p3/p3p3/3pP2P/3P4/Pq4P1/5RK1 b - - 1 22","m":"g8h8 f7f8 a8f8 f1f8","r":460,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"uwbIx","f":"2k1r3/pp6/2p1qQ2/3p4/3P4/8/PP3PPP/R5K1 w - - 5 27","m":"f6f3 e6e1 a1e1 e8e1","r":501,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"uxTba","f":"2r2Q1k/pp4pp/8/3p4/P3r1b1/1P4P1/2qN1RPP/1R5K b - - 2 29","m":"c8f8 f2f8","r":480,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"v0ZEy","f":"1r4k1/p4ppp/b2R4/2n1p3/P7/7P/P4PP1/6K1 b - - 0 24","m":"b8b6 d6d8","r":502,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"v0f0H","f":"1Q3rk1/5ppp/3R4/1pB1p3/4q3/8/P4PPP/3R2K1 b - - 0 21","m":"f8b8 d6d8 b8d8 d1d8","r":483,"t":"backRankMate endgame mate mateIn2 short"},{"i":"v0yma","f":"2kr3r/ppp1p1bp/1n2R1p1/8/2B5/P7/1PP2PPP/R1B3K1 w - - 1 16","m":"c4b3 d8d1 e6e1 d1e1","r":445,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"v4mY4","f":"r1b2rk1/p1p2ppp/2p2q2/8/8/3Q4/PPP2PPP/2KR2NR b - - 2 12","m":"f8d8 d3d8 f6d8 d1d8","r":489,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"v6UrB","f":"2k2r2/ppp1n2p/3pn3/8/4P1R1/2N1q3/PPP3PP/4R2K w - - 0 19","m":"e1e3 f8f1","r":488,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"v92vt","f":"6k1/p4ppp/2pp4/2p1r3/2P1P3/7P/P4PP1/1R4K1 b - - 1 24","m":"e5e4 b1b8 e4e8 b8e8","r":445,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"vAUAs","f":"4Qrk1/ppp2ppp/2np2q1/8/6b1/B1N5/PPP2PPP/2R1R1K1 b - - 0 18","m":"f8e8 e1e8","r":417,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"vBDPD","f":"4r2k/4q1bp/p1Q3p1/3P1p2/P7/4B3/1P3PPP/2R3K1 w - - 1 25","m":"e3c5 e7e1 c1e1 e8e1","r":556,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"vEFWA","f":"4rbk1/3R1ppp/p7/8/3B4/1P6/P3rPPP/5RK1 w - - 3 25","m":"f1c1 e2e1 c1e1 e8e1","r":475,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vENjG","f":"8/6pk/2p2p1p/5b2/3P4/6B1/r4PPP/2R3K1 w - - 2 31","m":"c1c6 a2a1 c6c1 a1c1","r":449,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vGZiY","f":"2k3rr/pp6/2p5/3p1pP1/5b2/3P1B2/PP2RPP1/4RK2 w - - 3 27","m":"g5g6 h8h1","r":516,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"vIeVK","f":"k3r3/ppQ4p/3Pq1p1/5p2/2R5/1P6/P5PP/7K w - - 2 37","m":"c4c1 e6e1 c1e1 e8e1","r":413,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"vJHjg","f":"6k1/5ppp/2p5/p5r1/3R4/2P2P1K/PP3P1P/4r3 b - - 2 25","m":"e1e6 d4d8 e6e8 d8e8","r":426,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"vMcZ3","f":"1k1r4/ppp3Qp/8/4P3/8/8/P2r1bPP/1Rq4K w - - 0 25","m":"b1c1 d2d1 c1d1 d8d1","r":530,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"vN9Zx","f":"5rk1/pp1b1r1p/4p1p1/6QR/8/P2B4/1P4PP/3R1q1K w - - 2 26","m":"d3f1 f7f1 d1f1 f8f1","r":496,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"vPQNZ","f":"6k1/pppr1ppp/2n3n1/1N6/8/1P2PB2/PRP2PPP/6K1 w - - 1 17","m":"f3c6 d7d1","r":420,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"vPTO2","f":"5R2/4n3/3rk3/p4n2/8/2p2Q2/P4PPP/6K1 w - - 14 51","m":"f3c3 d6d1 c3e1 d1e1","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vRGVS","f":"2q2rk1/2pbb1p1/p2p2n1/3Pp3/r5P1/3BBN1P/1PPQ4/2KR3R w - - 2 22","m":"d3g6 a4a1","r":568,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"vRSVJ","f":"r5k1/2r2ppp/8/8/p3Pq2/Pp1Q3P/1P3PP1/1B1R2K1 b - - 2 35","m":"a8c8 d3d8 c8d8 d1d8","r":535,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"vXyoD","f":"Q6k/1b2r1pp/1p4p1/3n4/1P1P4/4B3/1P3PPP/R5K1 b - - 6 25","m":"b7a8 a1a8 e7e8 a8e8","r":596,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vainu","f":"4r1k1/3p1ppp/5b2/2R5/8/2p1P2P/r5P1/2R3K1 b - - 0 26","m":"e8e3 c5c8 f6d8 c8d8 e3e8 d8e8","r":494,"t":"backRankMate endgame long mate mateIn3"},{"i":"veoBb","f":"8/7k/6pp/5Q2/3q4/P7/1P3PPP/2R3K1 w - - 0 35","m":"c1c8 d4d1","r":540,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ver8I","f":"4r1k1/4rp1p/p5B1/1p1p4/2n5/7Q/P4PPP/2Rq2K1 w - - 0 29","m":"c1d1 e7e1 d1e1 e8e1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vfQYI","f":"2r2r1k/2p3pp/p1N1p3/3n1p2/1P2P3/P4Q1P/3q2P1/4RR1K b - - 0 24","m":"f5e4 f3f8 c8f8 f1f8","r":516,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"vhClx","f":"k2Q3r/pp3ppp/8/4Pq1n/1n6/5N2/PPP1PPPP/2KR1B1R b - - 2 15","m":"h8d8 d1d8 f5c8 d8c8","r":474,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"vj8JG","f":"2rk1b1r/pp3Q1p/4q3/1b1pP3/8/P7/1P3PPP/nNB3KR w - - 0 18","m":"f7e6 c8c1","r":590,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"vkcob","f":"3r2k1/p4ppp/1p2p3/4n3/3R4/P7/1P2KPPP/2R1N3 b - - 0 21","m":"d8d4 c1c8 d4d8 c8d8","r":514,"t":"backRankMate endgame mate mateIn2 short"},{"i":"vr3Hk","f":"r1b1r2k/bpq3pp/p4p2/P2R4/1PB4P/2N3P1/2P1QP2/2KR4 b - - 0 24","m":"e8e2 d5d8 c7d8 d1d8 e2e8 d8e8","r":597,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"vrJA4","f":"r1R3k1/p4ppp/Qp6/4n3/8/P3B3/5PPK/3q4 b - - 1 27","m":"a8c8 a6c8 d1d8 c8d8","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"w6hN2","f":"3rQ2k/1pq3pp/p5n1/8/P5Pn/2N5/1PP2P2/4R1K1 b - - 1 25","m":"d8e8 e1e8 g6f8 e8f8","r":419,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wA3ph","f":"2b3k1/6pp/p2qp3/1p2np2/3Pp3/1P2P3/PQ2NPPP/6K1 w - - 0 22","m":"d4e5 d6d1","r":432,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wEAOE","f":"6k1/2p2ppp/4r3/1p2P3/1PbP4/2P5/5PPP/R5K1 b - - 2 27","m":"c7c6 a1a8 e6e8 a8e8","r":482,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wHD6E","f":"8/1b2p1k1/p2p1rp1/1p4Np/3bP2Q/1B6/PP4PP/4Rq1K w - - 12 28","m":"e1f1 f6f1","r":516,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"wHWRz","f":"2r2r1k/2q2ppp/p3N1b1/1pb1P3/8/P1P1BQ2/1P3RPP/5R1K b - - 0 26","m":"f7e6 f3f8 c5f8 f2f8 c8f8 f1f8","r":532,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"wHmLd","f":"6k1/1p3ppp/8/4Pp2/RPrp1P2/6P1/5K1P/8 b - - 0 28","m":"b7b5 a4a8 c4c8 a8c8","r":437,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"wIUhu","f":"6k1/2Nr3p/p5p1/2P5/P3r3/8/5PPP/4R1K1 w - - 0 34","m":"e1e4 d7d1 e4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wKRYH","f":"2k1r3/p2p4/2p5/3b3Q/1p6/5P2/PPP3PP/3Rq2K w - - 3 31","m":"d1e1 e8e1","r":495,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wMc0K","f":"1r1Q2k1/pp2rppp/4p3/8/1Rn2P2/2P2qP1/P4P1P/3R2K1 b - - 1 20","m":"b8d8 d1d8 e7e8 d8e8","r":550,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wMwr3","f":"5rk1/p7/6pp/1p4p1/2n5/2Q5/PP3qPP/3RR2K w - - 4 34","m":"e1f1 f2f1 d1f1 f8f1","r":595,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wPkdM","f":"2k5/ppp2prp/2n1b3/8/2p5/2B5/PQ3PPP/3rN1K1 w - - 0 18","m":"c3g7 d1e1","r":530,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"wR1sL","f":"4r1k1/1r2qppp/2R5/3P4/3Q4/8/PP3PPP/R5K1 w - - 7 25","m":"d5d6 e7e1 a1e1 e8e1","r":557,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"wWJrd","f":"6k1/7p/2p2Rp1/p3p3/8/8/Pr3PPP/6K1 w - - 0 30","m":"f6c6 b2b1 c6c1 b1c1","r":424,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"waAXA","f":"3rr1k1/p1p1qpp1/4N2p/3Q4/5B2/8/PPP2PPP/R3R1K1 w - - 1 18","m":"e6d8 e7e1 a1e1 e8e1","r":550,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"wbPiH","f":"4rr1k/7p/pp5R/7Q/1P6/3B4/4nRPP/q6K w - - 1 32","m":"f2f1 f8f1","r":478,"t":"backRankMate hangingPiece master mate mateIn1 middlegame oneMove"},{"i":"wbnv4","f":"4r3/p4kb1/1p6/6R1/2P2p2/1P1P4/P4PPP/3Rr1K1 w - - 1 36","m":"d1e1 e8e1","r":428,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wcEAa","f":"r3Q1k1/pp3ppq/2p2b2/8/3P2P1/B1P4p/PP3P1P/4RK2 b - - 2 25","m":"a8e8 e1e8","r":458,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wfGzD","f":"4r1k1/1R3ppp/r1Np1n2/3p4/2nP4/2P5/1P3PPP/R5K1 w - - 0 31","m":"a1a6 e8e1","r":404,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wfML1","f":"r1b1rQ1k/2p3np/3p2p1/1p1P2q1/1P2P3/3B3P/P5P1/2R2RK1 b - - 3 24","m":"e8f8 f1f8","r":400,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"wg6oS","f":"5r1k/p4qpp/8/2p2N2/4Q3/8/6PP/5R1K w - - 4 28","m":"f5e3 f7f1 e3f1 f8f1","r":450,"t":"backRankMate endgame mate mateIn2 short"},{"i":"whn3r","f":"r5k1/p4ppp/3R4/8/8/P4P2/r5PP/3R2K1 b - - 0 23","m":"a2a3 d6d8 a8d8 d1d8","r":518,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"wk8oh","f":"6k1/4rppp/2p5/1p1n1p2/R2P4/4P2P/5PP1/1R4K1 b - - 0 33","m":"b5a4 b1b8 e7e8 b8e8","r":458,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wl7dr","f":"3r4/2pr2k1/p1n1q1p1/1p5p/8/2P3Q1/PP3PPP/4R1K1 w - - 0 25","m":"e1e6 d7d1 e6e1 d1e1","r":535,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wlvdV","f":"3r2k1/pp3ppp/8/7P/8/nP3P2/P2R2BP/2R3K1 b - - 0 28","m":"d8d2 c1c8 d2d8 c8d8","r":410,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wntTQ","f":"8/r4pk1/2pb3p/1p2p1p1/8/2P3PB/6PP/3R3K w - - 0 49","m":"d1d6 a7a1 d6d1 a1d1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wojc9","f":"k1r5/p3p3/7p/1Q1Pp1p1/8/P7/5PPP/6K1 w - - 0 35","m":"b5d7 c8c1","r":501,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"wpmPk","f":"5r1k/p7/4P1Bp/3p4/8/8/P5PP/4Rq1K w - - 3 39","m":"e1f1 f8f1","r":417,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wsqNy","f":"3r4/7k/p5pp/1pp5/2P2q2/PP6/6PP/2Q4K w - - 0 36","m":"c1f4 d8d1 f4f1 d1f1","r":432,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"wst7u","f":"r3r2k/p1p2Rpp/1p6/8/3P4/1QP2N1n/PP4PP/4q2K w - - 0 24","m":"f3e1 e8e1 f7f1 e1f1","r":588,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wt88o","f":"r2r3k/2p3pp/p3p1p1/2p5/3qPQ2/PP1P4/2P3PP/3R1R1K b - - 4 26","m":"d8f8 f4f8 a8f8 f1f8","r":401,"t":"backRankMate endgame mate mateIn2 short"},{"i":"wtYtA","f":"1k2r3/1p3ppp/1Pn5/3r4/P7/1Q1p4/3R1PPP/3Rq1K1 w - - 3 27","m":"d1e1 e8e1","r":410,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"wu7lt","f":"r5k1/1p3p1p/4p1p1/8/2Pq1P2/1P6/6PP/3R3K w - - 0 29","m":"d1d4 a8a1 d4d1 a1d1","r":508,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"wwmM1","f":"2kr4/1pp5/p1p5/2q1P1pp/3PRp2/8/RP3PPP/6K1 w - - 0 24","m":"d4c5 d8d1 e4e1 d1e1","r":467,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"wxVGw","f":"r1b3k1/p3rppp/n1N5/1p6/2p1P3/2P5/P4PPP/2KR1B1R b - - 0 17","m":"e7e4 d1d8 e4e8 d8e8","r":449,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"wzByn","f":"r1bq2k1/ppp2ppp/3p4/2n1Q3/2P5/2N2B1P/PP4P1/3R1RK1 b - - 0 21","m":"d6e5 d1d8","r":539,"t":"backRankMate hangingPiece master mate mateIn1 middlegame oneMove"},{"i":"x45IV","f":"3r2k1/1p3ppb/4p2p/1P1BP3/1p1N4/1P4P1/r4P1P/2RR2K1 b - - 0 27","m":"d8d5 c1c8 d5d8 c8d8","r":532,"t":"backRankMate endgame mate mateIn2 short"},{"i":"x5ILX","f":"3n1r1k/1p3ppp/pP1N4/8/1P4Q1/8/6PP/2rRq2K w - - 2 31","m":"d1e1 c1e1","r":540,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"x5wOs","f":"2r4k/7p/6p1/1p4PP/p7/7Q/PPq5/1K5R w - - 0 30","m":"b1a1 c2c1 h1c1 c8c1","r":571,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"x6zKw","f":"5Q1k/6pp/p3n1r1/5R2/2pP4/q1P5/3B1RPP/6K1 b - - 0 36","m":"e6f8 f5f8 a3f8 f2f8","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"x9Ak7","f":"r4rk1/pQp1b1pp/3ppq2/8/8/1PP5/P5PP/RNB1R2K w - - 0 17","m":"c1b2 f6f1 e1f1 f8f1","r":542,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"xAcRV","f":"2r2Q1k/pp4pp/2ppB3/4p3/4P2q/3PB2P/PPP3P1/5RK1 b - - 0 18","m":"c8f8 f1f8","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"xAf9j","f":"3r1k1r/pp4pp/2p5/2b5/2Q3n1/2P2N2/PP4PP/R1B4K w - - 10 23","m":"c4g4 d8d1 f3e1 d1e1","r":472,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"xAxwl","f":"4n1k1/r2n1ppp/8/p1B3P1/8/2N4b/PPP2r2/2KRR2B b - - 4 20","m":"d7c5 e1e8","r":525,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"xCDpm","f":"4r1k1/p1p3pp/1p4n1/6N1/3r4/5P2/PPP2P1P/1K1R4 w - - 0 24","m":"d1d4 e8e1 d4d1 e1d1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xDjKu","f":"4rr1k/pp4p1/2pR3p/8/8/5B2/bP3PPP/R5K1 w - - 0 23","m":"a1a2 e8e1","r":401,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"xDllY","f":"r2r2k1/1b1q2P1/pnp1p2Q/5p2/2p2P2/3B1R2/PP4PP/R1B4K w - - 0 21","m":"d3c2 d7d1 c2d1 d8d1 f3f1 d1f1","r":519,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"xFHt9","f":"3r1n1r/p5k1/1p2pnpp/4q3/8/P6Q/1PP2PPP/3RR1K1 w - - 0 29","m":"e1e5 d8d1 e5e1 d1e1","r":507,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"xKIFb","f":"r5k1/1Rb2ppp/1pN1p3/1Ppp4/5P2/1PP5/5PPP/6K1 w - - 0 25","m":"b7c7 a8a1","r":405,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"xOTyT","f":"4r1k1/R4pr1/1q4p1/3pP2p/3P4/6R1/P2Q1PPP/6K1 w - - 1 32","m":"a7a5 b6b1 d2c1 b1c1","r":572,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xR2tB","f":"r1b3k1/1p3ppp/p4q2/4p3/3QR3/1P6/P2P1PPP/1R4K1 b - - 0 22","m":"e5d4 e4e8","r":410,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"xReWS","f":"3rn1k1/1pp3pp/p4pn1/5N2/8/2B4Q/PPP5/1K2q3 w - - 0 30","m":"c3e1 d8d1","r":406,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"xTeXB","f":"6k1/p5Np/1p4p1/4Rp2/8/P7/6PP/2r4K w - - 1 31","m":"e5e1 c1e1","r":465,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"xUQdh","f":"rnb1Q2k/p1p2qpp/1p1P4/1N6/8/8/PPP2PPP/R3R1K1 b - - 0 18","m":"f7e8 e1e8","r":481,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"xX7vZ","f":"4r1k1/4Qppp/8/8/8/5P2/P5P1/3R2K1 b - - 0 37","m":"e8e7 d1d8 e7e8 d8e8","r":438,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"xcdrG","f":"r2Q2k1/2pR1ppp/1bP1p3/1p2P3/6q1/P6P/5PP1/6K1 b - - 1 35","m":"a8d8 d7d8","r":400,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"xnVdH","f":"6k1/ppp2ppp/2b1p3/4P3/2P1p3/1P2P1P1/1r3r1P/K2R1B2 b - - 3 24","m":"b2b3 d1d8 c6e8 d8e8","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xnsa7","f":"8/pR6/3kr2Q/3p1pp1/8/3B4/P5PP/7K w - - 0 38","m":"h6g5 e6e1 d3f1 e1f1","r":422,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xolDD","f":"1k6/p1pr3p/1p3p2/P7/1q6/4P3/5PPP/1Q4K1 w - - 0 28","m":"b1b4 d7d1 b4e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"xqYJJ","f":"3r2k1/7p/2Q3p1/2P2p2/3rpB2/8/5PPP/2R3K1 w - - 0 38","m":"f4e5 d4d1 c1d1 d8d1","r":505,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xrVZx","f":"2Q5/p3r1kp/1p4p1/3P4/3b4/1P6/P4qPP/5R1K w - - 0 33","m":"f1f2 e7e1 f2f1 e1f1","r":579,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xtHXb","f":"Q3r2k/6pp/p2R1p2/1p6/1B2p2q/P1P4P/2P3P1/3R2K1 b - - 0 32","m":"e8a8 d6d8 a8d8 d1d8","r":553,"t":"backRankMate endgame mate mateIn2 short"},{"i":"xtgA7","f":"r3r2k/ppN2Qpp/8/4q3/7b/7P/PP4P1/R4R1K b - - 2 23","m":"e8f8 f7f8 a8f8 f1f8","r":553,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"xvaPR","f":"bq1r2k1/5ppp/1p2pb2/pP6/2P1NQ2/P2R4/6PP/3R2K1 b - - 2 32","m":"b8f4 d3d8 f6d8 d1d8","r":563,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"y5Nlq","f":"6k1/4Rpp1/7p/3p4/rp1P4/4B3/5PPP/6K1 w - - 0 33","m":"e7b7 a4a1 e3c1 a1c1","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"y8W5X","f":"5r1k/p1p2Qpp/1p6/8/8/5P2/PP4PP/4R1K1 b - - 1 27","m":"f8f7 e1e8 f7f8 e8f8","r":443,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"y8c6i","f":"4r1k1/p1pn1ppp/5n2/8/3P1q2/2P5/PP4PP/RN3R1K w - - 0 17","m":"f1f4 e8e1 f4f1 e1f1","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"yDP6M","f":"2kr3r/ppp4p/2n2Q2/4p3/2b5/2P5/PP3PPP/R2q2KR w - - 4 18","m":"a1d1 d8d1","r":498,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"yHawY","f":"4r1k1/pp3pb1/6pp/2r5/8/3RP2P/P4PPB/1R4K1 w - - 2 22","m":"b1b7 c5c1 d3d1 c1d1","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"yLZpv","f":"2r5/1p3k2/2p3R1/5p1p/p2P1R2/P1P5/1r3PPP/6K1 w - - 1 29","m":"g6g5 b2b1","r":484,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"yRJhp","f":"r1b3k1/ppp1r1pp/2pbqp1B/4N3/3P4/2P3Q1/PP3PPP/R3R1K1 w - - 2 18","m":"e5c6 e6e1 a1e1 e7e1","r":554,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"yRWfg","f":"r1br2k1/5ppp/p3p3/1p2R3/q1p2Q2/2P5/1BP2PPP/R5K1 w - - 0 21","m":"a1a4 d8d1 e5e1 d1e1","r":470,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ySQgf","f":"1k5r/ppp5/8/7Q/3P3K/2P2P1P/P5q1/8 b - - 13 44","m":"g2f3 h5h8 f3f8 h8f8","r":427,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"ySl2c","f":"1rb2rk1/p4p2/2p1p1BQ/3pP3/8/2P3R1/P1P2PPP/Rq4K1 w - - 1 19","m":"a1b1 b8b1 h6c1 b1c1","r":447,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"yUu09","f":"2r1Q2k/3r2pp/pBb2p2/P4P2/3P4/7P/6P1/4R1K1 b - - 6 35","m":"c8e8 e1e8","r":432,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"yVhbo","f":"r2qrk1Q/ppp1bpp1/3p2n1/6P1/5P2/2P1B3/PPP3P1/2K2B1R b - - 6 17","m":"g6h8 h1h8","r":514,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"yYgx1","f":"rn1r2k1/p3Rppp/1p6/5p2/1P1N4/B2P4/P4PPP/R5K1 b - - 3 17","m":"d8d4 e7e8","r":450,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ybAuO","f":"6k1/R4ppp/1p3n2/3p4/8/2rB1P1P/P4P1K/8 b - - 0 23","m":"c3d3 a7a8 f6e8 a8e8","r":530,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ybLxi","f":"rn3rk1/pb3ppp/1p2p1q1/1B6/8/2R1PN2/PP3PPP/3Q1RK1 b - - 4 15","m":"f8d8 d1d8","r":586,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"yeMNV","f":"3r2k1/3Q1ppp/1R6/4p3/3p4/7P/2P2PP1/6K1 b - - 0 30","m":"d8d7 b6b8 d7d8 b8d8","r":501,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ygnK7","f":"2r3k1/pq3ppp/1p2p3/4P3/1P1Q4/P1R4P/5PP1/6K1 b - - 0 26","m":"c8c3 d4d8","r":477,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"yhttQ","f":"3r2k1/p4ppp/4p3/1pR5/3R4/1P4P1/P4P1P/6K1 b - - 0 24","m":"d8d4 c5c8 d4d8 c8d8","r":406,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ykFvM","f":"r1b1Q1kr/pp3ppp/3p1n2/3P4/1P6/5B2/2P2PPP/q1B1R1K1 b - - 3 17","m":"f6e8 e1e8","r":479,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"yyCId","f":"5r1k/5Bpp/p7/8/2p4P/8/P4PP1/3R2K1 b - - 0 24","m":"f8f7 d1d8 f7f8 d8f8","r":476,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"yyLpA","f":"2q2r1k/2p3p1/p6p/2PPpr2/6Q1/P7/6PP/1R3R1K w - - 0 32","m":"g4e4 f5f1 b1f1 f8f1","r":402,"t":"backRankMate endgame mate mateIn2 short"},{"i":"z0AqD","f":"6k1/p1p2ppp/8/4N1P1/4b3/4B2P/2P1KP2/q2R4 b - - 0 30","m":"a1e5 d1d8 e5e8 d8e8","r":434,"t":"backRankMate endgame mate mateIn2 short"},{"i":"z1h6Z","f":"4Q1k1/pb3ppp/2q5/8/8/1PP5/P5PP/4R2K b - - 0 31","m":"c6e8 e1e8","r":479,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"z1iyZ","f":"4r1k1/p4pp1/3p3p/3P4/2P3Q1/1P6/P1N2PPP/q5K1 w - - 0 29","m":"c2a1 e8e1","r":470,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"z1qPS","f":"8/5p2/r7/1R1pk3/8/8/5PPP/2R3K1 w - - 1 44","m":"c1c5 a6a1 b5b1 a1b1 c5c1 b1c1","r":515,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"z2wyQ","f":"4r1k1/p2R1ppp/1p3qr1/8/4Q3/2N2P1P/PP3K2/3R4 b - - 10 31","m":"e8e4 d7d8 f6d8 d1d8 e4e8 d8e8","r":573,"t":"backRankMate endgame long mate mateIn3"},{"i":"z3oZi","f":"3r2k1/6pp/1p2p3/1Nb2p2/2P5/8/1R4PP/1R1r3K w - - 6 29","m":"b1d1 d8d1","r":540,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"z8bvf","f":"4R3/5pkp/p1p2p2/8/2r1p3/r3P3/5PPP/2R3K1 w - - 0 28","m":"c1c4 a3a1 c4c1 a1c1","r":457,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"z9eUH","f":"5r1k/ppp3p1/4Q2p/8/3P4/2P5/PP4PP/4Rq1K w - - 3 23","m":"e1f1 f8f1","r":429,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"zCG7u","f":"6k1/5pp1/2p1p2p/8/r1RPP3/8/2p2PPP/6K1 w - - 0 32","m":"c4c2 a4a1 c2c1 a1c1","r":481,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"zIIZ5","f":"4r1k1/p1p1qppp/1p6/3p4/PQnP4/2P5/1BP2PPP/1R1Rr1K1 w - - 1 20","m":"d1e1 e7e1 b1e1 e8e1","r":467,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"zPRw8","f":"6k1/5ppp/2b1p3/1pR5/8/2P4P/1r3PP1/6K1 b - - 1 28","m":"c6d5 c5c8","r":561,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"zQDBJ","f":"1rb2k1r/pp2pp1p/5bp1/1Bp1P3/5P2/5N2/PPP3PP/2KR3R b - - 0 14","m":"f6g7 d1d8","r":431,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"zQjdj","f":"1k5r/p1p3pp/Q1p2p2/5p2/1P6/2NrP3/R3NPPP/1q3K1R w - - 2 19","m":"c3b1 d3d1","r":455,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"zVTjT","f":"4r1k1/p4ppp/1p6/1Rn5/6N1/5PKP/r5P1/3R4 b - - 3 36","m":"e8e2 d1d8 e2e8 d8e8","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"zZH6i","f":"6k1/2R2ppb/1p3p1p/4P3/1P3P1N/4n2P/r5PK/3r4 b - - 2 30","m":"e3d5 c7c8","r":426,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"zgMqp","f":"3r1k2/1p4pb/p3R2p/1P1N4/PnP5/8/B5PP/7K w - - 1 30","m":"d5b4 d8d1 e6e1 d1e1","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"zh9Oc","f":"2r3k1/1R3ppp/p3p3/p1Rn4/3N4/P3P3/5PPP/6K1 b - - 0 24","m":"c8c5 b7b8 c5c8 b8c8","r":512,"t":"backRankMate endgame mate mateIn2 short"},{"i":"zoXJW","f":"r3r1k1/1p2qppp/1pp5/5P2/8/2P2Q2/PP3PPP/3R1RK1 w - - 0 19","m":"f1e1 e7e1 d1e1 e8e1","r":511,"t":"backRankMate endgame mate mateIn2 short"},{"i":"zqru5","f":"q2Q3k/6pp/p3R3/5P2/1pr3PP/2P2p2/PP3P2/4R1K1 b - - 0 31","m":"a8d8 e6e8 d8e8 e1e8","r":555,"t":"backRankMate endgame fork master mate mateIn2 queenRookEndgame short"},{"i":"zrMdz","f":"1k3Qr1/ppp4p/2q5/8/4n3/2P1P1P1/PP5P/RN3RK1 b - - 0 18","m":"g8f8 f1f8 c6e8 f8e8","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"zygAr","f":"5r1k/pp4p1/5qBp/3Qp3/8/8/P5PP/1R5K w - - 13 32","m":"g6c2 f6f1 b1f1 f8f1","r":421,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"04ky3","f":"k1Q4r/pp6/8/7p/2R5/1P5B/2P3KP/q7 b - - 2 42","m":"h8c8 c4c8","r":459,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"0550i","f":"2r3k1/p1pR1ppp/1p4b1/4r3/2P1P3/5B1P/P4KP1/3R4 b - - 3 26","m":"e5c5 d7d8 c8d8 d1d8","r":471,"t":"backRankMate endgame mate mateIn2 short"},{"i":"06hgM","f":"2r3k1/p4ppp/4p1n1/4P3/3r4/1P4B1/P4PPP/3R2K1 w - - 0 25","m":"d1d4 c8c1 d4d1 c1d1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"08FDm","f":"4r1k1/2p2ppp/3pq3/1Q6/2r5/2P5/P4PPP/R4RK1 w - - 3 23","m":"f1e1 e6e1 a1e1 e8e1","r":446,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0AGuG","f":"8/6pk/p6p/1p6/8/2Pq1P2/PP2r1PP/K2R4 w - - 0 38","m":"d1d3 e2e1 d3d1 e1d1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"0D7OO","f":"4q2k/6pp/2Qn4/1pB1p3/pP6/2P4P/P2r2P1/5RK1 b - - 3 35","m":"e8c6 f1f8","r":539,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"0Dr4B","f":"4r1k1/p3r1p1/2p4p/5pb1/4N3/P2P4/RP3PPP/3R2K1 w - - 0 26","m":"e4g5 e7e1 d1e1 e8e1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0E6At","f":"5rk1/pp4pp/8/2p1p3/2BpP3/6PP/Pr6/5RK1 b - - 3 25","m":"g8h8 f1f8","r":460,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"0Ihux","f":"4r1k1/1p3pb1/p5p1/2p2nBp/P7/2PR3Q/1P4PP/3Rq2K w - - 1 28","m":"d1e1 e8e1","r":475,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"0JEtL","f":"7k/p4pp1/2N4p/8/4B3/r3P3/1b3PPP/3R2K1 w - - 0 31","m":"d1d7 a3a1 e4b1 a1b1 d7d1 b1d1","r":465,"t":"backRankMate endgame long mate mateIn3"},{"i":"0NsWK","f":"1r6/5pk1/5b1p/4p1p1/P1n5/6B1/5PPP/2R3K1 w - - 0 30","m":"c1c4 b8b1 c4c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0PJcm","f":"1Qq2k1r/2p1ppb1/6p1/3R2p1/8/7P/PP3PP1/3R2K1 b - - 0 19","m":"c8b8 d5d8 b8d8 d1d8","r":452,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"0PmM4","f":"r1b1r1k1/5p1p/p2p2p1/2pP4/1pP2b2/1P3P2/RPB1NRPP/7K w - - 0 24","m":"e2f4 e8e1 f2f1 e1f1","r":461,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"0PneM","f":"6k1/3Q1ppp/3qp3/8/3P4/6P1/P3PP1P/1R4K1 b - - 0 27","m":"d6d7 b1b8 d7c8 b8c8","r":438,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"0QMHw","f":"5rk1/2p3p1/pp2q2p/8/1P6/2P5/P5PP/4R2K w - - 0 33","m":"e1e6 f8f1","r":420,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"0R9ix","f":"4r1k1/1p3ppp/p7/3R4/2P5/5N1P/Pq4P1/7K b - - 0 32","m":"e8e2 d5d8 e2e8 d8e8","r":504,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0Zryp","f":"4r2r/pR1QB1pp/5qk1/5p2/8/8/2P2PPP/4R1K1 w - - 1 24","m":"e7f6 e8e1","r":564,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"0a5Ij","f":"5rk1/1p4p1/p1PRnr2/7p/1P6/2P3N1/6PP/3R1q1K w - - 1 35","m":"g3f1 f6f1 d1f1 f8f1","r":473,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0bH0p","f":"6k1/5ppp/8/1p2Pb2/3p1P2/3P1Q2/q2R2PP/5K2 b - - 0 29","m":"a2d2 f3a8 f5c8 a8c8","r":512,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0hyjw","f":"3r2k1/5ppp/8/1p6/1P2P3/3p4/5PPP/2R2K2 b - - 1 24","m":"d8d4 c1c8 d4d8 c8d8","r":440,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"0jwFo","f":"1k6/2R4p/p1bP4/8/8/6B1/PPP3rP/1K6 w - - 4 39","m":"c7c6 g2g1 g3e1 g1e1","r":448,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0rOCm","f":"2kr3r/1p3p1p/p1p1p3/8/4B3/1R6/2P3PP/5R1K w - - 0 24","m":"f1f7 d8d1 f7f1 d1f1","r":515,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0slU9","f":"1k3r2/ppp3p1/2q5/4p2p/4P2P/2P2nP1/PP3R2/1K2R3 b - - 2 26","m":"f3e1 f2f8 c6e8 f8e8","r":456,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"0u0kc","f":"6k1/pp1Rbrpp/1qp1Q3/4p3/1P2P3/2N5/P1P2PPP/6K1 w - - 2 21","m":"d7e7 b6f2 g1h1 f2e1","r":568,"t":"backRankMate endgame mate mateIn2 short"},{"i":"0vqUu","f":"3rnrk1/p5pp/8/2p1Q3/3p4/1P1P4/PBP3PP/4Rq1K w - - 3 26","m":"e1f1 f8f1","r":454,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"0zqcw","f":"r4Q1k/4N1pp/1pN5/8/p5qP/1PP5/1P4P1/5RK1 b - - 0 31","m":"a8f8 f1f8","r":527,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"10Dho","f":"4r3/2pq1bpk/p2p1r1p/5pR1/1P3B1Q/4R3/1PP2PPP/6K1 w - - 6 24","m":"e3g3 e8e1","r":472,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"10uK1","f":"1r4k1/5pp1/7p/p7/8/4B3/5PPP/R5K1 w - - 0 36","m":"a1a5 b8b1 e3c1 b1c1","r":470,"t":"backRankMate endgame mate mateIn2 short"},{"i":"149PD","f":"4r1k1/5ppb/p6p/1p6/8/5N1P/PP3PP1/2R3K1 b - - 3 26","m":"e8e2 c1c8 e2e8 c8e8","r":559,"t":"backRankMate endgame mate mateIn2 short"},{"i":"14yWl","f":"6Rk/pb3ppp/1p6/8/P3p3/r3P3/5PPP/3R2K1 b - - 0 27","m":"h8g8 d1d8","r":486,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"16YOH","f":"r6k/pp4pp/1qp3b1/3n4/3b4/P5B1/1P2RPPP/1Q2R1K1 b - - 1 23","m":"g6b1 e2e8 a8e8 e1e8","r":548,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"16igW","f":"2r3k1/1pr2ppp/p3p3/3p1N2/P7/2P2P1P/1P2R1PK/4R3 b - - 0 24","m":"e6f5 e2e8 c8e8 e1e8","r":483,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"1Da4Y","f":"6k1/5p1p/6p1/2P1P3/2r5/8/5PPP/3R2K1 w - - 1 31","m":"d1d5 c4c1 d5d1 c1d1","r":410,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"1DaZb","f":"8/5p1k/pq2p1pp/4P3/8/P1p5/2Q2PPP/6K1 w - - 0 35","m":"c2c3 b6b1 c3c1 b1c1","r":528,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"1GAwu","f":"8/p1kr3p/1p6/2p1q3/8/B7/P5PP/4R2K w - - 0 33","m":"e1e5 d7d1 e5e1 d1e1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1Jn3y","f":"5r1k/pp4pp/2p3b1/2P1P3/2B4n/6r1/P1PR3K/8 b - - 2 30","m":"f8f3 d2d8 g6e8 d8e8 f3f8 e8f8","r":512,"t":"backRankMate endgame long mate mateIn3"},{"i":"1KaVP","f":"1R6/5ppk/r2p3p/8/2P1P3/3P4/5PPP/6K1 w - - 2 26","m":"b8b5 a6a1 b5b1 a1b1","r":458,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"1OxmV","f":"r3r1k1/pp3ppp/2n5/1N1p4/1P6/P7/1R1P1PPP/4R1K1 w - - 1 20","m":"b5c7 e8e1","r":408,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"1RTW4","f":"3r2k1/p1p1r1p1/1pR2n1p/8/3P4/1P3B2/5PPP/R5K1 w - - 1 26","m":"a1a7 e7e1","r":538,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"1S5c9","f":"r5k1/7p/2p3pQ/1p1p1p2/5P2/2q5/6PP/2R4K w - - 2 34","m":"c1c3 a8a1 c3c1 a1c1","r":479,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"1Vq8R","f":"3r2k1/1pp4p/1n4p1/1P6/p7/5N2/PBr2PPP/2R3K1 w - - 0 27","m":"c1c2 d8d1 f3e1 d1e1","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1WCRo","f":"2rk1r2/1pp5/1p1p1qp1/4n2p/8/5N1Q/P5PP/4RR1K w - - 0 27","m":"f3e5 f6f1 e1f1 f8f1","r":583,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"1WZTI","f":"r2r1k1Q/4bpp1/pp2q1n1/1b2p3/1P2P1p1/P3B1P1/3NBPK1/R6R b - - 5 29","m":"g6h8 h1h8","r":441,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"1bj6q","f":"6k1/pR3ppp/1n6/8/8/3P4/PP2rNPP/1K6 b - - 6 26","m":"e2f2 b7b8 b6c8 b8c8","r":538,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1e0sA","f":"5r1k/6pp/3p4/Q7/8/8/6PP/3R1q1K w - - 1 34","m":"d1f1 f8f1","r":454,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"1e5wR","f":"6k1/5ppb/7p/2rpPp1P/pR4P1/7q/2PN4/1B4K1 b - - 0 36","m":"f5g4 b4b8 c5c8 b8c8","r":552,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1f1zF","f":"8/5p1k/1N4p1/2q4p/4P3/5P2/4Q1PP/7K w - - 0 37","m":"b6d5 c5c1 e2d1 c1d1","r":539,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1hF7h","f":"6k1/p1r3p1/R3pb1p/p2p1p2/3P4/1P6/P4PPP/3R2K1 w - - 2 27","m":"d1d2 c7c1 d2d1 c1d1","r":500,"t":"backRankMate endgame mate mateIn2 short"},{"i":"1jLf2","f":"1k5r/ppp3Rp/5p2/4p3/4P3/2PP1P2/2PK2RP/q6Q b - - 3 27","m":"a1h1 g7g8 h8g8 g2g8","r":494,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"1jULP","f":"k1Q4r/pp3p2/8/4P3/5P2/6Pp/PP4bK/2R5 b - - 3 41","m":"h8c8 c1c8","r":400,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"1mLXe","f":"r1b2rk1/pp1n4/2pbp3/3pN1pQ/2PPp3/4P2R/PP1N2PP/R1B2q1K w - - 4 17","m":"d2f1 f8f1","r":480,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"1nf1X","f":"1k1Q1b1r/ppp1q1p1/2p3p1/4r1p1/6P1/5P2/PPP4P/2KR3R b - - 1 18","m":"e7d8 d1d8","r":464,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"1ygFH","f":"3r2k1/p4p2/1n2p2Q/1p2P1PP/2pr4/8/PPP5/1K3R1q w - - 0 30","m":"f1h1 d4d1 h1d1 d8d1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"22A7t","f":"q5k1/2p2ppp/3ppb2/8/3PQ3/1R2N1P1/1P1BPP1P/r3N1K1 b - - 0 26","m":"a8e4 b3b8 f6d8 b8d8","r":539,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"27aYo","f":"2k2r2/ppp1R3/3p2p1/8/3P4/2P5/PP4PP/4Rq1K w - - 5 31","m":"e1f1 f8f1","r":402,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"28Rbd","f":"3r1rk1/pR3ppp/1n1Q4/8/8/5N2/PPP2PPP/R1B3K1 w - - 1 18","m":"d6g3 d8d1 f3e1 d1e1","r":483,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"2CLtq","f":"4r1k1/5ppp/8/1P6/P2P4/5b1P/4R1r1/2R2K2 b - - 0 34","m":"e8e2 c1c8 e2e8 c8e8","r":416,"t":"backRankMate endgame mate mateIn2 short"},{"i":"2JHJr","f":"4R3/5p1p/2r2pk1/p7/8/8/2N2PPP/r5K1 w - - 1 37","m":"c2a1 c6c1 e8e1 c1e1","r":500,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"2KP4i","f":"4r1k1/p1q2p1p/1p4p1/4B3/8/P4Q2/6PP/7K w - - 0 29","m":"e5c7 e8e1 f3f1 e1f1","r":408,"t":"backRankMate endgame mate mateIn2 short"},{"i":"2KXOb","f":"3rr1k1/pp2Rppp/8/5bn1/2PP4/3Q1N2/P4PPP/4R1K1 b - - 0 20","m":"f5d3 e7e8 d8e8 e1e8","r":471,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"2MT8F","f":"4r1k1/p3qpp1/1p5p/3QB3/8/P4P2/6PP/2R1R2K w - - 1 30","m":"e5d6 e7e1 c1e1 e8e1","r":418,"t":"backRankMate endgame mate mateIn2 short"},{"i":"2MUyX","f":"8/3Pkp2/1b1R4/4r3/7p/8/PP5P/K7 w - - 0 49","m":"d6b6 e5e1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"2aVJA","f":"1r4k1/5p2/7p/2qB2p1/p4p2/7N/5PPP/2R3K1 w - - 0 32","m":"c1c5 b8b1 c5c1 b1c1","r":441,"t":"backRankMate endgame mate mateIn2 short"},{"i":"2dsnC","f":"6k1/2r2ppp/8/3p4/2bPpP2/2n1B1P1/1RN5/6K1 b - - 5 35","m":"c3d1 b2b8 c7c8 b8c8","r":453,"t":"backRankMate endgame mate mateIn2 short"},{"i":"2huFG","f":"3q3k/1p2r1pp/8/5p2/3Q2b1/3P2P1/Pr3PBP/2R2RK1 b - - 0 23","m":"d8d4 c1c8 d4d8 c8d8 e7e8 d8e8","r":415,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"2kR4W","f":"k1Rr4/pp1q2bp/6p1/1b6/8/1P1p1N2/P1Q2PPP/2R3K1 b - - 1 26","m":"d8c8 c2c8 d7c8 c1c8","r":453,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"2kYvW","f":"3r2k1/2p1Rppp/1p6/pPp5/8/8/1PP2PPP/6K1 w - - 0 23","m":"e7c7 d8d1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"2lR5T","f":"2R1r2k/p4Qpp/1p5q/3pp3/3Pb3/1P2P2P/P5P1/5RK1 b - - 0 30","m":"e8c8 f7f8 c8f8 f1f8","r":557,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"2u3VE","f":"3Q2k1/pp1r1ppp/4p3/4P3/5P2/1P2q3/P1r3PP/3RR2K b - - 1 24","m":"d7d8 d1d8","r":459,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"35jlz","f":"6k1/p2q1ppp/2Q5/8/8/1P6/P4PPP/2Rr2K1 w - - 1 27","m":"c1d1 d7d1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"38b01","f":"6k1/p4ppp/8/1p6/P7/1PPR4/4r1PP/6K1 b - - 0 27","m":"b5a4 d3d8 e2e8 d8e8","r":492,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"3EfNl","f":"2k1r3/ppp2p2/5n1p/3prPp1/2P5/1B3P2/PP1R2PP/R6K w - - 1 24","m":"c4d5 e5e1 a1e1 e8e1","r":431,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3Iixt","f":"2qr2k1/Qp3ppp/1R2p3/P2p4/3P4/8/5PPP/1Rr3K1 w - - 8 29","m":"b1c1 c8c1","r":466,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"3Je5j","f":"r7/2R2p1p/5p1k/3N4/1p6/8/1P3PPP/6K1 w - - 0 29","m":"d5b4 a8a1 c7c1 a1c1","r":540,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3MxiA","f":"r5k1/pppr1ppp/2n1p3/4n3/1PRP4/P3B2N/4RPPP/6K1 w - - 3 21","m":"d4e5 d7d1 e2e1 d1e1","r":463,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"3QzIC","f":"6k1/1b3pp1/1R5p/4pNn1/4P3/2r2P2/3N2PP/7K w - - 0 32","m":"b6b7 c3c1 d2f1 c1f1","r":597,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3S9Hp","f":"6k1/5ppp/3r4/1pR5/p1b5/P2p1P2/1P2RKPP/8 b - - 0 34","m":"d3e2 c5c8 d6d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3WCYe","f":"b5k1/5ppp/2qBp3/2P5/8/1Q2nP1P/6P1/5RK1 b - - 1 30","m":"e3f1 b3b8 c6c8 b8c8","r":504,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3Y5f0","f":"4k2r/pp2nppp/4b3/1B2P3/8/1PN1qP2/1PP3PP/1K1R3R b k - 3 16","m":"e8f8 d1d8","r":495,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"3gGsZ","f":"5Q1k/ppq1b1pp/8/4p3/6P1/2n1B3/P1P3PP/5RK1 b - - 3 22","m":"e7f8 f1f8","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"3gQTC","f":"8/5Rbk/p5qp/1p1Q2p1/8/2P1p1P1/PP4PP/7K w - - 0 36","m":"f7e7 g6b1 d5d1 b1d1","r":577,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3u43c","f":"r1bqr1k1/pp3ppp/2n5/3p4/P2P4/B1P3P1/5PBP/R2QR1K1 b - - 4 15","m":"d8a5 e1e8","r":572,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"3vtUU","f":"r1b1r2k/ppp3pp/2n5/8/1PPpQ3/P7/2P3PP/R1B2RK1 b - - 0 18","m":"e8e4 f1f8","r":468,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"3xIlE","f":"4r1k1/1p3ppp/p1p3b1/4r3/3Q4/8/P4NPP/R1q4K w - - 0 29","m":"a1c1 e5e1 c1e1 e8e1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"3zwVH","f":"r3Q1k1/5ppp/pq1P4/8/1pp2B2/3b2NP/PP4PK/R3R3 b - - 0 24","m":"a8e8 e1e8","r":415,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"42G2j","f":"3r1b1r/2p1k2p/p4N1p/1p2P3/P7/5N2/1RP2PPP/3R2K1 w - - 1 20","m":"f6e4 d8d1 f3e1 d1e1","r":400,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"43RQN","f":"6k1/p1p1rppp/8/8/2N3P1/2Pb2KP/P7/3R4 b - - 2 29","m":"d3c4 d1d8 e7e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"46hd5","f":"Q3r1k1/4nppp/p3p3/1pn1q1B1/8/P6P/1PPR1PP1/3R2K1 b - - 0 27","m":"e8a8 d2d8 a8d8 d1d8","r":572,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"4A9EF","f":"r2r2k1/p1q5/1p3p2/5N1p/4P1p1/4Q3/P4PPP/2R3K1 w - - 0 31","m":"c1c7 d8d1 e3e1 d1e1","r":442,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4EnjB","f":"4r2k/5pp1/4qn1p/1p1p4/1P3Qb1/P5R1/1B3PPP/3R2K1 w - - 14 28","m":"d1c1 e6e1 c1e1 e8e1","r":571,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"4JxYQ","f":"1r4k1/p4ppp/4pq2/2p5/2P2PP1/3KPQ1P/r3B3/1R6 b - - 3 32","m":"b8b1 f3a8 b1b8 a8b8 f6d8 b8d8","r":507,"t":"backRankMate endgame long mate mateIn3"},{"i":"4O88z","f":"6k1/p5pp/5p2/2P1p3/1P2R3/P1Br4/5PPP/6K1 w - - 1 27","m":"c3e5 d3d1 e4e1 d1e1","r":545,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4OQtL","f":"4r1k1/3R1ppp/8/p3Q1B1/4p3/7P/q4PP1/3R2K1 b - - 0 28","m":"e8e5 d7d8 e5e8 d8e8","r":567,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4S9ZJ","f":"5r1k/2p3pp/1pN5/6r1/5Q2/2P4P/PP3PP1/4R1K1 b - - 0 27","m":"f8f4 e1e8 f4f8 e8f8","r":502,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4XBKs","f":"r5k1/p4pp1/1q5p/2Rr4/2pP4/P1P5/3Q1PPP/6K1 w - - 0 25","m":"c5d5 b6b1 d2c1 b1c1","r":483,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4YZUH","f":"6r1/p4pk1/8/2r1p2R/8/8/6PP/4R2K w - - 0 33","m":"e1e5 c5c1 e5e1 c1e1","r":580,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"4ZXYt","f":"1k3r2/ppp5/3p4/1P6/3Pq3/2P3PR/P6K/5Q2 b - - 3 36","m":"f8f1 h3h8 f1f8 h8f8 e4e8 f8e8","r":490,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"4btKT","f":"2rr2k1/5pp1/1pp5/1p2R2p/1P4B1/P7/2P2RPP/1b5K w - - 0 30","m":"g4c8 d8d1 e5e1 d1e1 f2f1 e1f1","r":473,"t":"backRankMate endgame long mate mateIn3"},{"i":"4g3EK","f":"3r2k1/p4pp1/8/7B/1q1n4/7Q/PP4PP/R3r2K w - - 11 35","m":"a1e1 b4e1","r":514,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"4hOXs","f":"6k1/2p1rppp/p1n5/1p1R4/1B6/1P6/P4PPP/2K5 b - - 1 22","m":"c6b4 d5d8 e7e8 d8e8","r":499,"t":"backRankMate endgame mate mateIn2 short"},{"i":"4ij5t","f":"3r2k1/5ppp/1r6/8/4bPP1/4P2P/2pRNK2/2B5 b - - 2 35","m":"b6b1 d2d8","r":543,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"4j9Aj","f":"r3r1k1/1Nppqp1p/2pb2pB/p7/2b5/2P2Q1R/PP3PPP/3R2K1 w - - 18 22","m":"b7d6 e7e1 d1e1 e8e1","r":533,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"4m9kB","f":"4r1k1/ppp5/1n3p1Q/4q3/5p1N/2P5/PP3PPB/3R2K1 w - - 1 29","m":"h4g6 e5e1 d1e1 e8e1","r":576,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"4olKh","f":"k1nrr3/pp3ppp/2p1qb2/P2p4/4PB2/2N2Q2/1PP2PPP/R3R1K1 w - - 0 19","m":"e4d5 e6e1 a1e1 e8e1","r":595,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"4owzO","f":"Q5k1/5ppp/p4q2/8/3P4/3b1PP1/PP4KP/2r5 b - - 1 31","m":"c1c8 a8c8 f6d8 c8d8","r":473,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"4qzfV","f":"r4rk1/pp3ppp/8/8/P1q5/2P1Q1PP/1P2R1Kb/R7 b - - 2 29","m":"f8e8 e3e8 a8e8 e2e8","r":520,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"4waAo","f":"3r4/3q1pkp/5npN/p7/1p2bQ2/8/PP3PPP/1BR3K1 w - - 0 28","m":"b1e4 d7d1 c1d1 d8d1","r":563,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"4wwfg","f":"6k1/5pp1/p3q3/1p6/8/8/PPQ3PP/7K w - - 3 32","m":"b2b4 e6e1","r":436,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"58PWQ","f":"6k1/4rppp/8/8/pp6/1N6/5PPP/R5K1 b - - 0 40","m":"a4b3 a1a8 e7e8 a8e8","r":419,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5GwTU","f":"3r2k1/pb3ppp/1pp5/8/8/2PrRP2/PP3PKP/4R3 b - - 5 23","m":"d3d2 e3e8 d8e8 e1e8","r":428,"t":"backRankMate endgame mate mateIn2 short"},{"i":"5HWCv","f":"2r3k1/5ppb/8/5P2/2Q2BP1/2P2BK1/1r6/3R4 b - - 0 37","m":"c8c4 d1d8","r":437,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"5ImFa","f":"3r3r/1p3ppp/p1k5/2b5/8/1P1RP3/P4PPP/R1B3K1 w - - 1 20","m":"d3c3 d8d1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"5Kvrd","f":"1r3r1k/p5pp/3Q4/8/8/1P2P3/P5PP/4Rq1K w - - 5 33","m":"e1f1 f8f1","r":456,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"5PDYH","f":"3r3r/2k2ppp/2p2n2/4p3/4p3/2P5/P1P1bPPP/R1B1R1K1 w - - 0 17","m":"e1e2 d8d1 e2e1 d1e1","r":422,"t":"backRankMate endgame mate mateIn2 short"},{"i":"5PnIR","f":"r6k/6pp/N2p1r1b/1p3P2/1P2R3/2Pn4/7P/1B3RK1 b - - 2 32","m":"a8a6 e4e8 f6f8 e8f8","r":433,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"5Ps5p","f":"5k2/3r1ppp/p7/8/1Pp1q3/P7/2P2PPP/4R1K1 w - - 0 29","m":"e1e4 d7d1 e4e1 d1e1","r":490,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5QV1Z","f":"2r5/1b4bk/p5pp/1p1pP3/3q3N/1P6/P2Q1PPP/2R3K1 w - - 0 28","m":"d2d4 c8c1 d4d1 c1d1","r":498,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"5SwGY","f":"3rB2k/p1p1r1pp/1p1p4/6q1/8/P1N2Q2/1PP3PP/5RK1 b - - 2 22","m":"d8e8 f3f8 e8f8 f1f8","r":501,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"5TQg4","f":"5rk1/2N1Qp1p/pp1Pb1p1/2p5/2P5/2q5/P5PP/4R2K w - - 1 25","m":"c7e6 c3e1","r":595,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"5TTRb","f":"5bk1/3R1ppp/4p3/4P3/P7/1P2B3/1r3PPP/6K1 w - - 1 27","m":"d7b7 b2b1 e3c1 b1c1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"5UWUb","f":"r1b3k1/p4ppp/1ppR4/8/2B1r3/8/PPP2PPP/2K4R b - - 0 15","m":"e4c4 d6d8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"5VCPV","f":"4r2k/6pp/5p2/8/R7/4PP1P/6PK/8 b - - 0 38","m":"e8e3 a4a8 e3e8 a8e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5Vwic","f":"k2r3r/pp6/4p3/6p1/8/7N/PQ3PPP/1R1q2K1 w - - 3 26","m":"b1d1 d8d1","r":505,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"5ZFKE","f":"2rr2k1/p4ppp/4p3/bP6/4R3/8/3P1PPP/R5K1 w - - 0 25","m":"a1a5 c8c1 e4e1 c1e1","r":571,"t":"backRankMate endgame master mate mateIn2 rookEndgame short"},{"i":"5d9CQ","f":"4R3/kp6/7p/6p1/5p2/1PP5/P1r3PP/7K w - - 2 30","m":"c3c4 c2c1 e8e1 c1e1","r":411,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5gjP2","f":"r4Q1k/1b1p2pp/p7/3pq3/2P5/2N5/PP4PP/5RK1 b - - 3 23","m":"a8f8 f1f8","r":412,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"5i6yM","f":"5rk1/6pp/p3p1n1/2p5/P2p1r2/2P3Q1/1q4PP/1R2R2K w - - 0 25","m":"b1b2 f4f1 e1f1 f8f1","r":533,"t":"backRankMate endgame mate mateIn2 short"},{"i":"5iIjY","f":"5rk1/5ppp/p4n2/2p5/1q6/1P2Q2P/P5P1/3NR2K b - - 0 40","m":"f8e8 e3e8 f6e8 e1e8","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"5jy32","f":"3r2k1/4bpp1/p3N3/1pp1P3/8/6QP/PPPq1P2/2K3R1 w - - 1 31","m":"c1b1 d2d1 g1d1 d8d1","r":562,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"5kmhB","f":"2rr2k1/p2qbppp/1p2p3/8/4Q3/1P2P3/PB3PPP/R4RK1 w - - 3 18","m":"f1d1 d7d1 a1d1 d8d1","r":536,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"5lU7k","f":"8/7p/6pk/1p6/4p3/1P2qP2/r1P3PP/4R2K w - - 0 34","m":"e1e3 a2a1 e3e1 a1e1","r":518,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5o5iS","f":"6k1/4qp1p/3p2p1/p2P4/3P4/P7/2r2PPP/4R1K1 w - - 0 29","m":"e1e7 c2c1 e7e1 c1e1","r":568,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"5wJ9o","f":"r1b5/2pp3R/pk6/1p6/4Q3/5N2/PPP1PrP1/1K3B2 w - - 3 24","m":"e4a8 f2f1 f3e1 f1e1","r":443,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"5wvZJ","f":"3r1Q1k/p5pp/4p3/3pP1b1/1P1Pb3/Pq5P/1B3RPK/4N3 b - - 2 33","m":"d8f8 f2f8","r":434,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"5yYfL","f":"3r2k1/p4ppp/5n2/4P3/2p5/5N1P/P2R1PP1/6K1 b - - 0 29","m":"f6e4 d2d8","r":459,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"61q01","f":"r5k1/5ppp/8/3p1q2/3P4/1Q2P2P/R5P1/6K1 b - - 0 38","m":"a8a2 b3b8 f5c8 b8c8","r":504,"t":"backRankMate endgame mate mateIn2 short"},{"i":"64gJ6","f":"r4rk1/pR4p1/2p1b3/6pQ/2n1P3/1PN5/P1P3PP/3R1q1K w - - 3 23","m":"d1f1 f8f1","r":582,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"67uAF","f":"1k2q3/ppp2r2/6r1/4p2p/1P2B3/2PP4/P1Q3PP/5R1K w - - 0 33","m":"e4g6 f7f1","r":530,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"6FhPa","f":"2Q3rk/1p3Rpp/1p1p4/8/4q3/P6P/2P3P1/5R1K b - - 0 29","m":"g8c8 f7f8 c8f8 f1f8","r":552,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"6FlqQ","f":"2r3rk/pp4p1/6Qp/8/5P2/P7/6PP/3R3K w - - 2 38","m":"d1d7 c8c1 d7d1 c1d1","r":400,"t":"backRankMate endgame master mate mateIn2 queenRookEndgame short"},{"i":"6G4YC","f":"2Q5/5pk1/4p1pp/3q4/P7/4P3/5PPP/6K1 w - - 1 30","m":"a4a5 d5d1","r":550,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"6GIPO","f":"7k/3N2pp/8/2R3P1/2p2b1P/8/3r1P2/6K1 b - - 2 30","m":"d2d7 c5c8 d7d8 c8d8","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6Jz1I","f":"2rR2k1/1b3ppp/4p3/p6q/8/P4P2/1PP3PP/R2Q3K b - - 4 21","m":"c8d8 d1d8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6NmyJ","f":"1r4k1/p4pp1/3P3p/8/P7/8/5PPP/3R2K1 w - - 1 31","m":"d1d5 b8b1 d5d1 b1d1","r":535,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"6Og5g","f":"6k1/6p1/4Rn1p/3r4/1p3bP1/3B3P/PPP2B2/1K6 w - - 1 27","m":"d3c4 d5d1","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6PHHJ","f":"5r1k/pR4pp/8/2PN4/3Pn3/4P2P/PPr3P1/6K1 b - - 0 29","m":"f8f2 b7b8 f2f8 b8f8","r":471,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6PZMU","f":"4r1k1/pR1q1ppp/4p3/2r1n3/2P1B3/2P2QR1/P4PPP/6K1 w - - 2 25","m":"f3f4 d7d1","r":592,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6TUPT","f":"r4rk1/2pn2pp/p1nbp3/1p2p1N1/P2pP1Q1/2PP4/1P4PP/R1BR1q1K w - - 0 18","m":"d1f1 f8f1","r":493,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6UhpT","f":"4r1k1/pp1n1ppp/5n2/6B1/2pNr3/2P5/PP3PPP/R3R1K1 w - - 3 19","m":"g5f6 e4e1 a1e1 e8e1","r":591,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"6V4ux","f":"3r2k1/R4ppp/2pN4/1p6/4PP2/1PP5/P3K1Pn/8 b - - 1 31","m":"d8d6 a7a8 d6d8 a8d8","r":577,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6VooK","f":"1Q2r1k1/1p3ppp/6q1/p7/6b1/P2R2P1/1P2PPBP/3R2K1 b - - 0 23","m":"e8b8 d3d8 b8d8 d1d8","r":552,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6Ylmx","f":"r3Q1k1/2p2ppp/pq4b1/3n2B1/6P1/3P3P/PPP2P2/R3R1K1 b - - 1 19","m":"a8e8 e1e8","r":460,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6Yyh5","f":"4r1k1/p4p1p/5P1p/2b2R2/8/8/P3r1PP/2R4K w - - 0 29","m":"f5c5 e2e1 c1e1 e8e1","r":488,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"6bwpL","f":"1rbQ3k/p4ppp/8/2qrb3/8/1P6/P1P1B1PP/3R1R1K b - - 1 20","m":"d5d8 d1d8 c5f8 d8f8","r":559,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"6ccgt","f":"1rn5/4kpQ1/8/8/5p2/3B4/2P3PP/Rq5K w - - 1 33","m":"a1b1 b8b1 d3f1 b1f1","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"6e52h","f":"2br4/7p/2p2Qqk/2P5/1PP4N/P7/5PPP/6K1 w - - 1 34","m":"h4g6 d8d1","r":446,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6f4zo","f":"rn3rk1/ppp3pp/8/3p4/8/2N5/PP1P2PP/R1B1Qq1K w - - 2 15","m":"e1f1 f8f1","r":469,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6hFv1","f":"r5k1/1R3p2/3p1pp1/3P4/2r5/PR6/6PP/7K w - - 0 33","m":"b7d7 c4c1","r":426,"t":"backRankMate endgame master mate mateIn1 oneMove rookEndgame"},{"i":"6iYa3","f":"7k/6pp/8/3N1b2/2pR1p2/8/rP3PPP/6K1 w - - 0 29","m":"d5e7 a2a1 d4d1 a1d1","r":538,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"6nAhv","f":"7k/3R2pp/p3B3/5p2/1P6/K3n3/P1r2n2/2r5 b - - 5 38","m":"f2e4 d7d8","r":534,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6nsEC","f":"r3r1k1/p4p1p/1pp1q1pB/n3NnQ1/P2P1R2/2P5/5PPP/R5K1 w - - 12 29","m":"e5g4 e6e1 a1e1 e8e1","r":556,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"6o3b0","f":"rnb2r1k/ppp3pp/1b6/3QP3/3P4/N1P5/PP4PP/R4q1K w - - 5 17","m":"a1f1 f8f1","r":515,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"6pLhG","f":"2r3k1/1B1n1ppp/1p6/3p4/3P1B2/qPr2N2/5PPP/R5K1 w - - 0 23","m":"a1a3 c3c1 f4c1 c8c1 f3e1 c1e1","r":551,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"6poEF","f":"2r3k1/5ppp/4p3/1pQ1P3/2p5/8/Pr3PPP/R2R2K1 b - - 0 23","m":"c8c5 d1d8","r":440,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"6qOhA","f":"r4rk1/ppp3pR/6P1/6p1/6P1/8/PPP5/1K3q1R w - - 4 28","m":"h1f1 f8f1","r":431,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"6wxpM","f":"2rR2k1/5ppp/pPp1b3/8/2P5/8/6PP/3R2K1 b - - 2 27","m":"c8d8 d1d8","r":511,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"6xufN","f":"r5k1/ppBq1ppp/2p5/8/P7/6P1/4QP1P/4R1K1 b - - 0 28","m":"d7c7 e2e8 a8e8 e1e8","r":578,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"6xzhI","f":"4r1k1/1pp2p2/p2p1qbQ/8/1P6/P4R2/2P1rPPP/2R3K1 w - - 9 25","m":"f3f6 e2e1 c1e1 e8e1","r":537,"t":"backRankMate endgame mate mateIn2 short"},{"i":"71BUn","f":"b2r2k1/2q3pp/p3Q3/1p3p2/8/P1b2N2/1PP2PPP/4R1K1 b - - 0 22","m":"g8h8 e6e8 d8e8 e1e8","r":546,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"78r4x","f":"3r4/pp2rkp1/7p/8/R7/1P6/1Pn2PPP/3R2K1 w - - 0 24","m":"d1d8 e7e1","r":402,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"7A6Pb","f":"5rk1/pp3ppp/4b3/Q7/8/P1P5/4qPPP/1R4K1 b - - 1 23","m":"f8d8 a5d8","r":511,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"7AbGA","f":"1r6/5ppk/2p1pb1p/p1rp4/PP6/2P1R2R/4NPPP/6K1 w - - 0 28","m":"b4c5 b8b1 e2c1 b1c1 e3e1 c1e1","r":466,"t":"backRankMate endgame long mate mateIn3"},{"i":"7Ac43","f":"2kr3r/ppp3pp/2p2n2/4Q3/8/2N5/PPP2PPP/R1Bq2K1 w - - 1 19","m":"c3d1 d8d1 e5e1 d1e1","r":510,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7E3Cj","f":"5r1k/p3r1pp/bp6/1qpQ1p2/P1N5/2P5/3P1PPP/R1B3K1 w - - 0 22","m":"a4b5 e7e1","r":449,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7F2Bd","f":"3r1Q1k/6pp/4p3/1p2q3/2p2R2/6P1/r3PP1P/1R4K1 b - - 2 31","m":"d8f8 f4f8","r":432,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"7IebS","f":"2r2k2/pp4pQ/4q2p/3p4/8/1P6/P4PPP/b3R1K1 w - - 0 26","m":"e1e6 c8c1 e6e1 c1e1","r":526,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7LTbc","f":"1r2Q2k/p1p3pp/3b1p2/3p4/5P2/1P3PP1/P2q3P/4R2K b - - 4 26","m":"b8e8 e1e8 d6f8 e8f8","r":498,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7NHES","f":"r2kr3/4q1pQ/p2p4/2pb4/4P3/8/PP3PPP/3RR1K1 w - - 0 22","m":"e4d5 e7e1 d1e1 e8e1","r":590,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7NUUy","f":"3r2k1/pppq1pp1/7p/4r3/2P5/P1P5/1PQ2PPP/4R1K1 w - - 0 22","m":"e1e5 d7d1 c2d1 d8d1 e5e1 d1e1","r":458,"t":"backRankMate endgame long mate mateIn3"},{"i":"7PcvP","f":"r1b1r1k1/5ppp/p7/1pp1Q3/4P1P1/qP5P/P1B2P2/1K1R2NR b - - 0 21","m":"e8e5 d1d8 e5e8 d8e8","r":428,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7RdSE","f":"3r2k1/5ppp/2p1p3/8/1P1Q4/7P/5PP1/R5K1 b - - 0 22","m":"d8d4 a1a8 d4d8 a8d8","r":474,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"7Sdmg","f":"4rQ1k/p5pp/4r3/P2pP1q1/3P4/1PB4P/6N1/5RK1 b - - 2 32","m":"e8f8 f1f8","r":453,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"7YHfM","f":"6k1/p3bpp1/2n4p/Pq1Bp3/2N5/2PQ4/5PPP/6K1 w - - 4 33","m":"d3f3 b5b1 f3d1 b1d1","r":498,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7YRtR","f":"r4r2/pp4p1/2k5/2b3qp/2R5/2P1p1Q1/PBP3PP/3b3K w - - 0 25","m":"g3g5 f8f1","r":496,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7duss","f":"4r1k1/6pp/1p3p2/2pN4/5P2/P4R2/1PP3PP/7K w - - 1 32","m":"c2c4 e8e1 f3f1 e1f1","r":567,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7ekEY","f":"k1r5/1R6/3p4/P1r4p/6p1/8/5PPP/1R4K1 w - - 1 30","m":"a5a6 c5c1 b1c1 c8c1","r":472,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"7fXb2","f":"3r3k/7p/2R1r3/pp6/8/P7/1P3PPP/6K1 w - - 0 31","m":"c6e6 d8d1 e6e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"7fnqL","f":"3r3k/p7/1p4qp/7Q/3r1b2/8/PPP5/1K5R w - - 0 31","m":"h5g6 d4d1 h1d1 d8d1","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7jQjM","f":"r2rQ1k1/1p3ppp/p7/3q4/8/8/PPP1RPPP/4R1K1 b - - 3 21","m":"d8e8 e2e8 a8e8 e1e8","r":447,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"7nzK1","f":"1k1rQ3/ppp2p1p/nq6/3n4/5P2/3P2BB/PPP4P/R1K1R3 b - - 0 21","m":"d8e8 e1e8","r":461,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"7o3FB","f":"r6k/R4Rpp/8/8/8/1r4P1/5P1P/7K b - - 0 28","m":"a8a7 f7f8","r":490,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"7sODU","f":"r2R3k/ppp1QBpp/5n2/8/5b2/2N2q2/PPP4P/6K1 b - - 4 22","m":"a8d8 e7d8 f6e8 d8e8","r":576,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"7t2iT","f":"R4bk1/5ppp/2Pp4/4p3/2P5/1r3N2/5PPP/6K1 w - - 2 35","m":"c6c7 b3b1 f3e1 b1e1","r":463,"t":"backRankMate endgame mate mateIn2 short"},{"i":"7tgFo","f":"3r1b1r/pkp4p/b1p1Q1p1/8/2P3B1/BP6/P4RPP/RN1q3K w - - 1 22","m":"g4d1 d8d1 e6e1 d1e1 f2f1 e1f1","r":470,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"81CUc","f":"B5k1/5pp1/r3pn1p/8/2pP4/2P5/1P2RPPP/6K1 w - - 3 28","m":"a8f3 a6a1 e2e1 a1e1","r":424,"t":"backRankMate endgame mate mateIn2 short"},{"i":"875Bs","f":"2r4k/4bQp1/1p2N2p/p7/4P2P/8/PP4P1/K1q4R w - - 1 27","m":"h1c1 c8c1","r":417,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"8BLZw","f":"2r3k1/5pp1/2r1p2q/3n4/p2P3R/6Q1/P4PPP/R5K1 w - - 0 28","m":"h4h6 c6c1 a1c1 c8c1","r":548,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8DZR5","f":"4r1k1/p1p1bppp/5B2/8/3P4/2N5/P1r2PPP/R3R1K1 b - - 0 17","m":"e7f6 e1e8","r":499,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"8HgeS","f":"2r3k1/3R1ppp/p3pq2/1p6/1P3Q2/2PR4/1P4PP/6K1 b - - 0 27","m":"f6f4 d7d8 c8d8 d3d8","r":579,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"8JAYW","f":"5r1k/pQ4b1/6pp/8/3q4/5B2/P5PP/3r1R1K w - - 0 32","m":"f1d1 d4d1 f3d1 f8f1","r":581,"t":"backRankMate endgame master mate mateIn2 sacrifice short"},{"i":"8NYOE","f":"7k/2R3pp/1pp2r2/p1b5/3N1p2/2P4P/PP3PP1/6K1 b - - 3 32","m":"c5d4 c7c8 f6f8 c8f8","r":576,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8PBwR","f":"4k3/p7/3Q3p/3pP3/3P4/8/2p3PP/7K w - - 0 43","m":"e5e6 c2c1q","r":531,"t":"advancedPawn backRankMate endgame master mate mateIn1 oneMove promotion queenEndgame"},{"i":"8TKGm","f":"1rR3k1/5ppp/4p3/4P3/p2q4/P7/1P3P1P/2R2K2 b - - 1 31","m":"b8c8 c1c8 d4d8 c8d8","r":438,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"8WOEc","f":"rn3r1k/1p4pp/p3B3/4p3/1P2P3/P7/2P3PP/R1BQ1q1K w - - 1 18","m":"d1f1 f8f1","r":453,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8fPZv","f":"Q1r3k1/p3Rppp/1p1B4/8/2q5/8/P4PPP/4R1K1 b - - 0 27","m":"c8a8 e7e8 a8e8 e1e8","r":533,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8lwAF","f":"r2q1r1k/ppp2ppB/7n/6N1/2p2BbQ/8/PPP2PPP/RN4K1 w - - 1 16","m":"h7e4 d8d1","r":491,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"8sCvx","f":"2r3k1/1p3ppp/1b6/1Prp1p2/5q2/2P5/1B2QPPP/2R1R1K1 b - - 3 25","m":"c5c4 e2e8 c8e8 e1e8","r":439,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"8wLnl","f":"2kr2r1/ppp1n1Pp/4q3/8/2p5/8/PPP2PPP/RN2R1K1 w - - 0 17","m":"e1e6 d8d1 e6e1 d1e1","r":488,"t":"backRankMate endgame mate mateIn2 short"},{"i":"8zLHe","f":"r7/pp1n2pk/3Bp2p/3pP3/5Q2/2P2R2/P4PPP/1q4K1 w - - 17 29","m":"f4c1 b1c1","r":427,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"915Bq","f":"r5k1/pp3ppp/7r/2p5/4PN2/2P1n1Bq/PP1Q3P/3R1R1K b - - 12 26","m":"h3g3 d2d8 a8d8 d1d8","r":578,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"92X9s","f":"5rk1/1pp5/p2p3R/4n1p1/6P1/2P5/PPP1r3/1K2R3 w - - 0 27","m":"e1e2 f8f1 e2e1 f1e1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"97Hfd","f":"k2r4/pp6/3N4/2p1p3/2P4p/1P6/PBKP3r/6R1 b - - 1 30","m":"d8d6 g1g8 d6d8 g8d8","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"97TUt","f":"5r2/p2kb3/1p6/4p1QB/4b3/1NP1p3/PP5R/K7 w - - 0 43","m":"g5e5 f8f1 h5d1 f1d1 b3c1 d1c1","r":525,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"99dqJ","f":"r5k1/r1p2ppp/3p4/3RPP2/1p4P1/1P5P/2P5/2KR4 b - - 2 28","m":"d6e5 d5d8 a8d8 d1d8","r":480,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"9CAiG","f":"2kr3r/3q4/1Q6/2p5/5b2/8/PPP3PP/2KRR3 w - - 1 30","m":"c1b1 d7d1 e1d1 d8d1","r":425,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9CKAp","f":"2r3k1/pp4pp/5n2/3p4/3N4/8/PP3PPP/4R1K1 w - - 1 22","m":"e1e7 c8c1 e7e1 c1e1","r":579,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9ETa1","f":"rr4k1/2p1Rppp/6b1/2BP2P1/1P5P/1KP2P2/P2q4/4R3 b - - 8 31","m":"a8a2 e7e8 b8e8 e1e8","r":447,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9Lnyd","f":"2r3k1/p5pp/4p3/1R1pPp2/5P2/2rQ4/P5PP/7K w - - 0 25","m":"d3b1 c3c1 b1c1 c8c1","r":506,"t":"backRankMate endgame fork mate mateIn2 queenRookEndgame short"},{"i":"9SOLd","f":"r2Q1k1r/p1p1nppp/1p6/1Bb1P1q1/8/6B1/PPP1n1PP/1K1R3R b - - 2 16","m":"a8d8 d1d8","r":511,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"9TH9h","f":"6k1/5ppp/8/K1n5/P3B3/4rP2/7P/1R6 b - - 4 37","m":"c5e4 b1b8","r":522,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"9XDpM","f":"6k1/p4ppp/8/6b1/P2Pb3/r2BP1P1/7P/2RN2K1 b - - 2 29","m":"e4d3 c1c8 g5d8 c8d8","r":439,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9YLDz","f":"2r3k1/3nb1pp/3pp3/4p3/N3P3/1P2B3/P1r2PPP/R1R3K1 w - - 2 21","m":"e3b6 c2c1 a1c1 c8c1","r":563,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9bM3c","f":"7k/R5pp/4r3/5p2/P2p2n1/2P2PP1/4q3/2KR4 b - - 2 36","m":"g4e3 a7a8 e6e8 a8e8","r":596,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9bVat","f":"6k1/p5pp/8/5p2/P3p3/1PrrR3/5PPP/2R3K1 w - - 0 25","m":"c1c3 d3d1 e3e1 d1e1","r":519,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"9cBLm","f":"5k2/p4ppp/3p4/1p6/1P3N2/r7/2P1RPPP/6K1 w - - 0 27","m":"f4d5 a3a1 e2e1 a1e1","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9dyM1","f":"1k1r4/pp3R2/1n5p/2R1P1b1/1PP5/P7/6PP/7K w - - 3 28","m":"e5e6 d8d1 f7f1 d1f1","r":506,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9eUUK","f":"2r3k1/5ppp/p3p3/r2p4/P3n3/1RP5/2K1NPPP/R7 b - - 1 25","m":"c8c4 b3b8 c4c8 b8c8","r":446,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9fE5z","f":"r2r2k1/p3Nppp/b5n1/4p3/1Pq5/P4P2/2PQ1BPP/3RR1K1 b - - 0 22","m":"g6e7 d2d8 a8d8 d1d8","r":533,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"9fGea","f":"4r1k1/ppp2ppp/3r4/8/6P1/1P4P1/P1P1qP2/R1Q1R1K1 b - - 1 20","m":"e2g4 e1e8","r":497,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"9ipUQ","f":"6k1/p1r2ppp/2P1p1q1/8/2P1P3/5P2/6PP/RR4K1 b - - 1 25","m":"g6f6 b1b8 c7c8 b8c8 f6d8 c8d8","r":461,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"9qdvb","f":"8/4r3/1q1r2k1/2P2b1p/1P3pp1/5P2/PQ4PP/4R2K w - - 0 41","m":"e1e7 d6d1 e7e1 d1e1","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"9sbzl","f":"r1b3k1/pp3ppp/2p5/3q4/1n1P1PPP/1P2Q2N/1BP5/2K1R3 b - - 0 21","m":"c8g4 e3e8 a8e8 e1e8","r":497,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"9tEqa","f":"5r2/p3kr1p/1p6/2P1p3/8/8/P2R2PP/1R5K w - - 1 33","m":"c5b6 f7f1 b1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"9tvWm","f":"k7/p1Rr4/6p1/4B2p/P7/8/r4PPP/1R1q3K w - - 0 41","m":"b1d1 d7d1","r":595,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"9vcOD","f":"3Q2k1/pp3ppp/8/1q6/2r5/7P/P4PP1/4R1K1 b - - 1 27","m":"b5e8 e1e8","r":419,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"9xJSn","f":"6k1/p4ppp/1p2p3/3P4/2r5/5P2/P1r4P/1R2R2K b - - 0 25","m":"e6d5 e1e8","r":458,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"A1z3y","f":"1k1r1b1r/ppp2ppp/8/2q5/5P2/2N1Q1PB/PPP3K1/3R1R2 b - - 0 18","m":"c5e3 d1d8","r":573,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"A4lnH","f":"r3r1k1/1pq2ppp/p1n5/8/3Pp1b1/NPP2NbP/P2BQ1P1/4RRK1 b - - 2 20","m":"e4f3 e2e8 a8e8 e1e8","r":577,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"A4uQp","f":"5rk1/b3rq1p/p2p1Pp1/1p6/2n4Q/1BP5/PP4PP/3R1R1K w - - 0 32","m":"f6e7 f7f1 d1f1 f8f1","r":581,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"A6Tgj","f":"r5k1/p5pp/1p2Qp2/2p5/8/8/1qN3PP/4R1K1 b - - 1 27","m":"g8h8 e6e8 a8e8 e1e8","r":448,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"A9hWr","f":"Q4rk1/p4ppp/qp6/8/2p5/1PP4P/P2R1PP1/3R2K1 b - - 0 24","m":"f8a8 d2d8 a8d8 d1d8","r":449,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"AA5M5","f":"4R3/3r2kp/p7/1p6/4q3/P7/1P3PPP/6K1 w - - 0 37","m":"e8e4 d7d1 e4e1 d1e1","r":503,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AGq33","f":"Q5k1/p1p2ppp/1n6/8/8/B1P5/P1Pq1PPP/4R1K1 b - - 0 18","m":"b6a8 e1e8","r":421,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AI9Q6","f":"1r5k/6pp/2p5/p7/2PpR3/PP3rP1/6K1/4R3 b - - 1 32","m":"f3b3 e4e8 b8e8 e1e8","r":568,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AIyzi","f":"4r3/pk5p/3R2p1/1p6/4rp2/6BP/PP3PP1/2R3K1 w - - 0 30","m":"g3h2 e4e1 c1e1 e8e1","r":414,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AJPat","f":"4r1k1/p4ppp/1p6/8/1P6/P5P1/3R3P/5K2 b - - 0 34","m":"e8e3 d2d8 e3e8 d8e8","r":444,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AMC60","f":"5r1k/5Rpp/2p5/p7/P7/8/2P3PP/4R1K1 b - - 0 28","m":"f8f7 e1e8 f7f8 e8f8","r":413,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AMHSn","f":"4r1k1/5p1p/1R4p1/2p5/3b4/P3B3/1P2rPPP/1R4K1 w - - 3 32","m":"e3d4 e2e1 b1e1 e8e1","r":479,"t":"backRankMate endgame mate mateIn2 short"},{"i":"AOdnC","f":"3r2k1/2p2ppp/ppQ5/4P3/2Pr4/8/P4PPP/2R3K1 w - - 1 20","m":"c6c7 d4d1 c1d1 d8d1","r":591,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"AREtO","f":"3r2k1/5ppp/8/pRP5/1b6/1P4P1/6KP/8 b - - 0 29","m":"d8d5 b5b8 d5d8 b8d8","r":488,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ASvdV","f":"1R6/5pkp/4p1p1/8/r7/4P3/1b3PPP/6K1 w - - 0 34","m":"b8b2 a4a1 b2b1 a1b1","r":514,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ATB6o","f":"1k2r3/pP1b3R/P2P4/4B1p1/5p2/8/5PPP/6K1 w - - 1 41","m":"e5h8 e8e1","r":504,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AVPcF","f":"2rr3k/R4Q2/7p/2P2p2/1P6/4b3/6PP/R2q3K w - - 4 34","m":"a1d1 d8d1","r":409,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AY87w","f":"3r1Q1k/6pp/ppp3r1/4P3/2P5/PR1PB2b/6P1/5RK1 b - - 3 31","m":"d8f8 f1f8","r":486,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AggyV","f":"6k1/6p1/r1pR1p1p/4n3/4PP2/8/6PP/7K w - - 0 47","m":"f4e5 a6a1 d6d1 a1d1","r":459,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"AicFe","f":"2r2Q1k/6pp/p7/3nr3/q2bN3/P6P/2RB2B1/3K1R2 b - - 5 31","m":"c8f8 f1f8","r":472,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"AjbEO","f":"6k1/Q4pp1/4p2p/3pP3/P7/8/2q2PPP/Rr4K1 w - - 1 31","m":"a1b1 c2b1","r":519,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"AjxiM","f":"2r1r1k1/p4ppp/1p3n2/4qN2/2P5/8/P1Q2PPP/2R2RK1 w - - 0 20","m":"f1e1 e5e1 c1e1 e8e1","r":529,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Am4ko","f":"2r3k1/pq2npbp/1p2p1p1/8/4P3/1PNQ4/PB3PPP/3R2K1 b - - 2 22","m":"g8f8 d3d8 c8d8 d1d8","r":405,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"AmsMJ","f":"8/p1k3p1/7p/4r3/8/8/Pr3PPP/4R1K1 w - - 0 37","m":"e1e5 b2b1 e5e1 b1e1","r":516,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Ap9mM","f":"4r1k1/3R1pp1/p1n4p/1pQ1r3/q2N4/P7/1PP2PPP/3R2K1 w - - 0 24","m":"c5c6 e5e1 d1e1 e8e1","r":596,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"As6qT","f":"r1k1r3/2p5/p3q3/1p3p2/3P4/P1P2bQR/5PPP/R5K1 w - - 0 32","m":"g3f3 e6e1 a1e1 e8e1","r":543,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"AvsZt","f":"3r3k/p3R1p1/1p1PQp1p/4n3/2r5/5B2/P4PPP/6K1 w - - 0 31","m":"e6f5 c4c1 f3d1 c1d1","r":573,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Axklw","f":"3r3r/ppp1Rpk1/7p/6n1/7B/6R1/PPP2PPP/6K1 w - - 9 23","m":"h4g5 d8d1 e7e1 d1e1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"B0Mqa","f":"2Q3k1/n4ppp/3p4/3Pp1q1/Pr2P3/6PP/5P2/2R2BK1 b - - 2 31","m":"a7c8 c1c8 g5d8 c8d8","r":404,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"B0dfA","f":"5rk1/1p3rpp/1p6/n2N4/1Q1P4/2P5/PP4PP/R3Rq1K w - - 4 27","m":"e1f1 f7f1 a1f1 f8f1","r":436,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"B1d79","f":"4r2k/pp4pp/4Q3/5p2/3R4/8/PP3PPP/6K1 b - - 0 22","m":"e8e6 d4d8 e6e8 d8e8","r":425,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"B5g8Z","f":"2r4k/5Qp1/p1q3P1/8/1p5P/8/PP6/K2R4 w - - 5 36","m":"d1f1 c6c1 f1c1 c8c1","r":424,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"B76Ku","f":"r6k/7p/8/3b1p2/1P2pP2/R5R1/3P2PP/q6K w - - 0 38","m":"a3a1 a8a1","r":426,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"B8mFB","f":"r2b2k1/pb1q1ppp/1p1p4/3N4/8/4QN2/PPP2PPP/4R1K1 b - - 3 18","m":"b7d5 e3e8 d7e8 e1e8","r":572,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"BBqI7","f":"6k1/p2r1ppp/2R5/2p5/8/1P4P1/P2r1P1P/R5K1 b - - 1 26","m":"d2c2 c6c8 d7d8 c8d8","r":436,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"BD7H9","f":"8/2r3k1/5p2/3Q4/P2P4/4PN2/5PPP/6K1 w - - 3 31","m":"d5e4 c7c1 f3e1 c1e1","r":533,"t":"backRankMate endgame mate mateIn2 short"},{"i":"BRWw9","f":"3k4/1p3Rp1/3rP1Q1/pP2p3/2p5/P7/6PP/7K w - - 2 37","m":"g6g7 d6d1 f7f1 d1f1","r":498,"t":"backRankMate endgame master mate mateIn2 queenRookEndgame short"},{"i":"BTh2a","f":"6k1/4R1pp/2N1pn2/1bPp1p2/3P1P2/4r3/5NPP/6K1 w - - 1 29","m":"c6e5 e3e1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"BVfSP","f":"r2q1rk1/3bp1b1/p2p2p1/1ppn2Np/4P2Q/3P4/PPP3PP/R1B2R1K w - - 0 16","m":"e4d5 f8f1","r":478,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Ba6yP","f":"r2qk2r/4ppb1/6p1/pBp4p/Pp6/1P3P2/2PQ1NPP/2KR4 b kq - 1 21","m":"e8f8 d2d8 a8d8 d1d8","r":425,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"BbIlJ","f":"2r1rnk1/pp3pp1/2p2b2/3p4/3P1P2/2N3NR/PPQ3PP/R3q2K w - - 2 22","m":"a1e1 e8e1 g3f1 e1f1","r":539,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Bg2P7","f":"3qQ2k/6pp/pp3p2/8/P3R3/1P6/6PP/7K b - - 4 35","m":"d8e8 e4e8","r":486,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"Bit2t","f":"3r1rk1/1pp2ppp/p1p1b3/4P3/1R2Q3/P1q5/5PPP/2R3K1 w - - 0 25","m":"c1c3 d8d1 e4e1 d1e1","r":498,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Bk920","f":"4r1k1/1r3ppp/p7/5P2/4n3/4B2P/q4P2/2R1R1K1 b - - 0 27","m":"e8e5 c1c8 e5e8 c8e8","r":513,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"BnJIm","f":"3r1r2/7k/3p2pP/pp1P4/3q4/6P1/PPP4R/1K1R4 w - - 0 29","m":"d1d4 f8f1 d4d1 f1d1","r":400,"t":"backRankMate endgame master mate mateIn2 rookEndgame short"},{"i":"BtKS3","f":"r1b1Q1kr/ppp2ppp/3p1n2/8/1nN5/5B2/P4PPP/R3R1K1 b - - 3 18","m":"f6e8 e1e8","r":498,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"BtOh5","f":"2b2rk1/p5bp/3p2p1/2p2r2/4q3/1PN5/P1PB2PP/2R2R1K w - - 0 26","m":"c3e4 f5f1 c1f1 f8f1","r":470,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"BvQXi","f":"r4Q1k/p5pp/1ppN4/3p4/6P1/8/q1P4P/5RK1 b - - 2 25","m":"a8f8 f1f8","r":494,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Bx8Qd","f":"3rnr2/pQ3pkp/6p1/4p3/4P3/1P6/P4PPP/R2q2K1 w - - 0 22","m":"a1d1 d8d1","r":429,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"C02oY","f":"2Q2rk1/p2R1ppp/4p3/1B2q3/8/2b1BP2/PP3P1P/2KR4 b - - 0 19","m":"f8c8 d7d8 c8d8 d1d8","r":583,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"C4c57","f":"r5k1/5ppp/2p1b3/P2r4/5K2/4P3/2P3PP/1R5R b - - 0 25","m":"a8a5 b1b8 e6c8 b8c8 d5d8 c8d8","r":473,"t":"backRankMate endgame long mate mateIn3"},{"i":"C77xz","f":"rn2Q1kr/pp3ppp/2p2nq1/1B6/3P1B2/5N1b/PPP3P1/R3R1K1 b - - 3 17","m":"f6e8 e1e8","r":553,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"C7YAn","f":"3r1rk1/pp4pp/n1p1R3/8/8/2q2B2/P5PP/2RQ3K w - - 3 19","m":"c1c3 d8d1 f3d1 f8f1","r":431,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"C8GQB","f":"2r3k1/4ppbp/6p1/4P3/3P4/6B1/3q1PPP/3R2K1 w - - 0 29","m":"d1d2 c8c1 d2d1 c1d1","r":503,"t":"backRankMate endgame mate mateIn2 short"},{"i":"C9ha2","f":"4r1k1/4qp1p/p1p3pb/3p4/3P4/2N5/PP1Q1PPP/3R2K1 w - - 4 20","m":"d2c2 e7e1 d1e1 e8e1","r":555,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"CAvEl","f":"6k1/2pR1pp1/p1p5/7p/4P3/8/Prr2PPP/1R4K1 w - - 0 22","m":"b1b2 c2c1 d7d1 c1d1","r":596,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"CJ0iR","f":"5k2/pp3ppp/2p5/3r4/8/2P5/PP3PPP/4R1K1 w - - 2 24","m":"e1e2 d5d1 e2e1 d1e1","r":440,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"CKFJT","f":"r1b1r1k1/ppp2ppp/8/8/8/2P5/PP2BPPP/2KR3R b - - 2 16","m":"e8e2 d1d8 e2e8 d8e8","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CMmrE","f":"5Q1k/ppp3np/6p1/2qP4/8/2P5/PP1N2PP/5R1K b - - 0 24","m":"c5f8 f1f8","r":420,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CPnQ2","f":"4r1k1/4Nppp/p7/1p2pb2/8/P1P2B2/1P4PP/3R3K b - - 0 24","m":"e8e7 d1d8 e7e8 d8e8","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CSs4c","f":"r2Q1k1r/pp2nppp/8/2q1P3/7P/2N2b2/PP3PP1/2KR1B1R b - - 1 17","m":"a8d8 d1d8","r":418,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"CTAdE","f":"4r1k1/ppp1rpp1/5b1p/8/8/1B4R1/P1P3PP/5R1K w - - 8 23","m":"f1f6 e7e1 f6f1 e1f1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"CTeBa","f":"4R3/p5pk/1p4pp/3r4/8/5P2/P1P3PP/7K w - - 2 29","m":"e8e7 d5d1 e7e1 d1e1","r":566,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"CXMeL","f":"3Q1bk1/5ppp/4p3/4P3/1pb5/8/4rNPP/3N2K1 w - - 2 45","m":"d8c7 e2e1","r":572,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CXg2R","f":"6k1/5pp1/7p/4P3/3p1P2/rP6/6PP/1R5K w - - 0 31","m":"b1b2 a3a1 b2b1 a1b1","r":420,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"CaW5Y","f":"3rr1k1/pp3ppp/5n2/2pp2B1/3n2b1/1B1P1N2/PPP2PPP/RN2R1K1 w - - 0 13","m":"f3d4 e8e1","r":589,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"CbDZZ","f":"1rb4k/2p3pp/2n5/2B1p3/4Pq2/2PQ2PP/5P1K/3R4 b - - 0 29","m":"f4h6 d3d8 c6d8 d1d8","r":530,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"CbGKM","f":"r1b3k1/1p3ppp/pp1p1n2/3Q4/8/7P/PP3PP1/R1B1R1K1 b - - 0 17","m":"f6d5 e1e8","r":433,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CfveP","f":"r5k1/Q2p1ppp/1pb2q2/8/8/2N5/PPP2PPP/4R1K1 b - - 0 18","m":"a8a7 e1e8","r":482,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"CgqKH","f":"3r2k1/p1q2pnp/1pR1p1p1/4P3/4B1Q1/7P/PP2RPPB/3r2K1 w - - 1 26","m":"e2e1 d1e1","r":556,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"CkKaK","f":"4r1k1/p4ppp/1b6/4Q3/3p4/1P4P1/P4P1P/2R3K1 b - - 0 25","m":"e8e5 c1c8 b6d8 c8d8 e5e8 d8e8","r":487,"t":"backRankMate endgame long mate mateIn3"},{"i":"Cmhd8","f":"4R3/r4pkp/6p1/8/BP6/8/5PPP/6K1 w - - 3 40","m":"a4b3 a7a1 b3d1 a1d1 e8e1 d1e1","r":589,"t":"backRankMate endgame long mate mateIn3"},{"i":"CnMYp","f":"1r3rk1/p1n3p1/b3p3/6Q1/7R/8/PP4PP/2R2q1K w - - 2 26","m":"c1f1 f8f1","r":471,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"CpvLn","f":"r2r2k1/5pbp/p3p1p1/1pp5/3P4/2P2R2/PP3PPP/R1B3K1 w - - 0 20","m":"d4c5 d8d1","r":447,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Cvy4A","f":"2r3k1/pp3pp1/1nr4p/8/3PNP1P/6Q1/PP6/K1q1R1R1 w - - 5 28","m":"e1c1 c6c1 g1c1 c8c1","r":407,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"CwkoT","f":"3R4/2p2ppk/p6p/2P2b2/B1P5/r3B3/5PPP/6K1 w - - 2 30","m":"a4e8 a3a1 e3c1 a1c1 d8d1 c1d1","r":470,"t":"backRankMate endgame long mate mateIn3"},{"i":"CzzcI","f":"1k1r4/ppp2ppp/8/8/1P6/2PQ4/P5PP/4R2K b - - 0 32","m":"d8d3 e1e8 d3d8 e8d8","r":493,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"D0g3b","f":"r1br1k2/p1p1RB1p/1p4p1/8/8/2b5/PPP2PPP/R1B3K1 w - - 1 16","m":"b2c3 d8d1 e7e1 d1e1","r":506,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"D1NWl","f":"3r2k1/2R2ppp/1p2b3/p7/2Br4/8/PP3PPP/2R3K1 w - - 4 22","m":"c4e6 d4d1 c1d1 d8d1","r":521,"t":"backRankMate endgame mate mateIn2 short"},{"i":"D204b","f":"5r1k/1p1q2bp/p3pNp1/2p5/8/3P4/PPP3PP/5R1K w - - 0 25","m":"f6d7 f8f1","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"D2EOn","f":"1rR4k/6pp/4Q3/8/P7/7P/6P1/1qb4K b - - 4 40","m":"b8c8 e6c8","r":555,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"D2TY2","f":"2r2Q1k/1p4pp/p7/P1pPp3/2q5/8/1P4PP/5R1K b - - 3 32","m":"c8f8 f1f8","r":512,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"D73Rl","f":"r2q1rk1/pb4pp/1p2N1p1/3pp3/8/1PP5/PB4PP/R2Qb2K w - - 0 21","m":"e6d8 f8f1","r":497,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"D7Gg4","f":"4r1k1/pp4pp/2p2p2/P2p1b2/1Q3R2/8/1BB3PP/4q2K w - - 0 31","m":"b4e1 e8e1 f4f1 e1f1","r":550,"t":"backRankMate endgame mate mateIn2 short"},{"i":"D7LWb","f":"r5k1/pp1n1rb1/2b1p1pp/2ppPq2/8/2NP1NQ1/PPPBR1PP/4R2K w - - 4 20","m":"f3h4 f5f1 e1f1 f7f1","r":459,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"D8ItJ","f":"1r6/2p1bkp1/2B2pp1/3Pp3/4P3/n1P4R/P5PP/5R1K w - - 0 31","m":"f1f3 b8b1 f3f1 b1f1","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"D9a46","f":"r1b2rk1/pp3ppp/2pB1b2/2Pq1p2/3P4/5N2/PP2QPPP/R3R1K1 b - - 1 16","m":"f8d8 e2e8 d8e8 e1e8","r":543,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"DByZD","f":"2k5/p1p5/1p1p3p/3PPR2/Pr6/8/6PP/7K w - - 0 30","m":"e5e6 b4b1 f5f1 b1f1","r":478,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"DD6hL","f":"1R6/kpp5/3p3N/3N3B/2r5/p7/P4PPP/6K1 w - - 2 31","m":"b8c8 c4c1 h5d1 c1d1","r":507,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DEX5A","f":"r3n1k1/pp2qppp/4p3/8/1Q6/2N5/PPP2PPP/3rR1K1 w - - 0 17","m":"b4e7 d1e1","r":467,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"DHPL0","f":"3rkb1r/p1p1nppp/2p5/8/4R3/8/PPP2PPP/RNB3K1 w k - 0 12","m":"c1f4 d8d1 e4e1 d1e1","r":526,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"DI4U2","f":"2kr3r/pp4pp/2p2p2/4n3/1bP5/1P4P1/P3PPBP/R1B1K2R w KQ - 2 17","m":"e1f1 d8d1","r":525,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"DLSM5","f":"1k1Rr3/ppp4p/5np1/8/4p3/P6B/4K2P/3R4 b - - 3 29","m":"e8d8 d1d8","r":418,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"DRBG7","f":"6kr/p4rp1/3p1q1p/3Q4/8/8/PPP1R1PP/4R2K w - - 2 24","m":"e2e6 f6f1 e1f1 f7f1","r":505,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"DTvBN","f":"2r4k/pp4p1/7p/3Rp3/8/8/PP3PPP/6K1 w - - 1 26","m":"d5d2 c8c1 d2d1 c1d1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"DX4S4","f":"2r3k1/4p1bp/p2pR1pB/1p6/3P4/P7/1P3PPP/6K1 w - - 1 26","m":"h6g7 c8c1 e6e1 c1e1","r":565,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DYEPf","f":"2r5/pp3kpp/4b3/8/8/P1N3B1/1n2RPPP/6K1 w - - 0 22","m":"c3e4 c8c1 e2e1 c1e1","r":515,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Dh2Vg","f":"8/3R1pkp/p3p1p1/Pp2p3/1P2r3/8/3RNPPP/2r3K1 w - - 1 30","m":"e2c1 e4e1","r":409,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Dm2vj","f":"3Q3k/ppb3pp/8/8/8/2P2P1P/PP2rqP1/3R1N1K b - - 4 30","m":"c7d8 d1d8 e2e8 d8e8","r":447,"t":"backRankMate endgame mate mateIn2 short"},{"i":"DrOYc","f":"k2Q1r2/ppB5/5p1p/5Bp1/8/7P/PqP2bP1/3R3K b - - 1 29","m":"f8d8 d1d8","r":511,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Dz1PC","f":"1n1r1k2/7R/p5p1/1p3b2/1P6/P4N2/B4PPP/R2r2K1 w - - 1 25","m":"a1d1 d8d1 f3e1 d1e1","r":478,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"E06nZ","f":"8/p1p2Rpp/3k1n2/8/P7/1P1P1B2/2r2PPP/4R1K1 w - - 0 28","m":"e1e7 c2c1 f3d1 c1d1 e7e1 d1e1","r":460,"t":"backRankMate endgame long mate mateIn3"},{"i":"E1302","f":"2R2rk1/p2q1ppp/1p2p3/8/1P2n3/P3PN2/2Q2PPP/2R3K1 b - - 0 20","m":"f8c8 c2c8 d7c8 c1c8","r":422,"t":"backRankMate endgame mate mateIn2 short"},{"i":"E2r8f","f":"3Rr1k1/2p2ppb/1b5p/p4P2/6P1/P4N1P/1P3P2/3R2K1 b - - 2 31","m":"e8d8 d1d8","r":501,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"E5USF","f":"r1b1r1k1/p3q1pp/npp2p2/4B3/Q1PP4/2N5/PP3PPP/R3R1K1 w - - 0 17","m":"e5d6 e7e1 a1e1 e8e1","r":589,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"E71Jk","f":"2r4k/6pp/1p2Nr2/p1bP4/P1P1q3/8/1R4PP/4R2K w - - 0 33","m":"e1e4 f6f1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"EIQCJ","f":"r3r1k1/1p3pp1/pNp1q3/6p1/8/P4Q2/1P3PPP/3R2K1 w - - 2 26","m":"b6a8 e6e1 d1e1 e8e1","r":462,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"EImjl","f":"6k1/5ppp/p2R4/1p2p3/4P3/5N2/PP3PPP/2r3K1 w - - 1 22","m":"f3e1 c1e1","r":424,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"EJKXM","f":"5rk1/p5p1/8/4p3/7R/PpP5/1P4PP/3Q1q1K w - - 2 37","m":"d1f1 f8f1","r":419,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"EM9L5","f":"1k2B1nr/ppp2ppp/8/4b3/8/P1N2P2/1P3PPP/2KR4 b - - 3 18","m":"g8f6 d1d8","r":514,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ESYcV","f":"1r2rbk1/1p3p1p/pnb1p1p1/2pqP3/P5R1/N1PB3Q/1P3PPP/R1B3K1 w - - 4 20","m":"d3e4 d5d1","r":553,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ETSla","f":"2r4k/6pp/5p2/4p3/1R2P3/P7/2P3PP/6K1 b - - 0 31","m":"c8c2 b4b8 c2c8 b8c8","r":449,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"EWfQ6","f":"7k/5RR1/7p/pp6/8/1N5r/PPP5/1K6 w - - 0 36","m":"b3a5 h3h1 g7g1 h1g1 f7f1 g1f1","r":442,"t":"backRankMate endgame long mate mateIn3"},{"i":"EY1y0","f":"3rr1k1/p3qppp/1pp5/3p1n2/2P3Q1/1P5R/PB3PPP/R5K1 w - - 0 26","m":"g4f5 e7e1 a1e1 e8e1","r":441,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"EYrIy","f":"3r2k1/p3Qp2/6p1/8/8/2pR4/P1P2PPP/3q2K1 w - - 1 25","m":"d3d1 d8d1 e7e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"EYt4X","f":"Q4b1r/p1pqpkpp/5p2/8/8/4P3/PP3PPP/RNB3K1 w - - 1 18","m":"a8a7 d7d1","r":420,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"EZU5B","f":"2k4r/pppr1pp1/5n1p/4b3/6b1/N1P3Q1/PP3PPP/4R1K1 w - - 0 19","m":"e1e5 d7d1 e5e1 d1e1","r":423,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"EjHlJ","f":"3r2k1/p4ppp/1p6/8/8/2P1PQ2/5PPP/3q2K1 w - - 0 26","m":"f3d1 d8d1","r":444,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Em5P2","f":"2r5/3R4/kp1p4/pp2q3/2r2Bp1/1Q3p2/PP3P2/K6R w - - 6 42","m":"f4e5 c4c1 h1c1 c8c1","r":577,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Eq9sD","f":"3r2k1/p4ppp/Q3p3/8/2P2q2/5N1P/P4KP1/3R4 b - - 1 27","m":"d8d1 a6c8 d1d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ErOWO","f":"6k1/1p3ppp/p4n2/3p4/P2PpPP1/1P2B2P/1r3P2/2R3K1 b - - 4 25","m":"b2b3 c1c8 f6e8 c8e8","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Etoma","f":"3r4/6R1/1p2p2k/2n4p/6p1/8/1P4PP/5R1K w - - 7 35","m":"f1f7 d8d1 f7f1 d1f1","r":473,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ExDAp","f":"rQ4k1/5ppp/4p3/7q/2P3b1/2P1BN2/r3BPPP/1R2K2R b K - 7 24","m":"a8b8 b1b8","r":481,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"EyRV8","f":"6k1/3r2bp/2r5/4p3/P7/4R3/5PPP/3R2K1 w - - 0 35","m":"d1d7 c6c1 d7d1 c1d1 e3e1 d1e1","r":531,"t":"backRankMate endgame long mate mateIn3"},{"i":"EzJkB","f":"4r3/p2krppp/3p4/b7/3n1B2/1Q3N2/PPP3PP/3R3K w - - 4 23","m":"f3d4 e7e1 d1e1 e8e1","r":435,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"F1Azo","f":"4r1k1/pp4pp/2p5/3p1n2/2P5/P4P2/1Q4PP/R3q2K w - - 2 26","m":"a1e1 e8e1","r":420,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"F1rsg","f":"5k2/ppp4p/2q3p1/3b4/1PP5/1Q6/P5PP/7K w - - 0 31","m":"c4d5 c6c1 b3d1 c1d1","r":542,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"F4nNg","f":"2r3k1/5ppp/p3p3/P2p4/3P4/2R4P/6P1/1R4K1 b - - 0 31","m":"c8c3 b1b8 c3c8 b8c8","r":457,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"F4tRS","f":"3r1Q1k/p1p3pp/1pn5/4p3/1P2P3/2P2R2/P3q1PP/R6K b - - 2 22","m":"d8f8 f3f8","r":486,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"F8AEJ","f":"r3r1k1/ppp2ppp/5n2/8/2P5/8/PQ2BPPP/RN1q2K1 w - - 0 16","m":"e2d1 e8e1","r":493,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"FAGbs","f":"5r1k/pp4pp/q7/2p2Q2/8/1P2PP2/P5PP/3R1RK1 b - - 0 28","m":"f8f5 d1d8 f5f8 d8f8","r":443,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"FMM4M","f":"2R2nk1/3R3p/8/8/4P3/1r3P2/6PP/7K w - - 11 38","m":"d7d8 b3b1 c8c1 b1c1 d8d1 c1d1","r":426,"t":"backRankMate endgame long mate mateIn3"},{"i":"FQ1Si","f":"3q3k/p2Q2pp/5p2/2p1p3/7P/3P2B1/r1Pb1PP1/1R3RK1 b - - 0 23","m":"d8d7 b1b8 d7c8 b8c8","r":596,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FQQ8d","f":"3R4/ppB5/2p1r1p1/8/2k3N1/P2p4/1P4PP/6K1 w - - 2 35","m":"g4f2 e6e1","r":444,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"FSifv","f":"4rr1k/pp4pp/2p5/5N2/8/2P5/P4nP1/4R1K1 b - - 0 33","m":"f8f5 e1e8 f5f8 e8f8","r":459,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"FTX6K","f":"4rrk1/pp3p1p/2p3p1/3p4/8/3q2Q1/PP4PP/RNB4K w - - 0 19","m":"g3d3 e8e1 d3f1 e1f1","r":521,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"FWAO8","f":"5r1k/p1n2Rpp/8/8/8/4Q1P1/Pq5P/4R1K1 b - - 0 28","m":"f8f7 e3e8 c7e8 e1e8 f7f8 e8f8","r":401,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"FjydU","f":"2rr2k1/1Rp2pp1/p3p1b1/8/P4B2/b5Q1/B1n2PPP/1R1q2K1 w - - 4 30","m":"b1d1 d8d1","r":415,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"FkVwp","f":"2r3k1/5ppp/2Q1pq2/3p1n2/1P1P4/2P2N1P/5PP1/R5K1 b - - 2 23","m":"c8c6 a1a8 c6c8 a8c8 f6d8 c8d8","r":599,"t":"backRankMate endgame long mate mateIn3"},{"i":"FkjSz","f":"6k1/pr3ppp/p7/2r1n3/3P4/2P2P2/2K3PP/3RR3 b - - 0 22","m":"e5f3 e1e8","r":537,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"FqXFP","f":"7k/nB4p1/P2r3p/4p3/1P6/2r5/5PPP/3R2K1 w - - 0 35","m":"d1d6 c3c1 d6d1 c1d1","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FqtVz","f":"1k2Qbr1/ppp5/2n2B1p/3p2pb/3P4/2P2N1P/qP1N2P1/2K1R2n b - - 1 21","m":"h5e8 e1e8 c6d8 e8d8","r":540,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Fr74H","f":"4r1k1/4r3/8/pbPP2n1/7R/8/2B3PP/3R3K w - - 2 43","m":"d5d6 e7e1 d1e1 e8e1","r":579,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"FtFU4","f":"r1b1r1k1/5ppp/p2R4/1p6/2p1P3/P1P5/B1P2PPP/5RK1 b - - 0 17","m":"e8e4 d6d8 e4e8 d8e8","r":568,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FtG9c","f":"r3r1k1/pp4pp/1bp1qp2/3nN1B1/3P4/2P3Q1/PP3PPP/R3R1K1 w - - 0 18","m":"e5g4 e6e1 a1e1 e8e1","r":526,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"FtqPo","f":"8/R5Rp/b7/5k2/1nP5/BP6/3r1PPP/6K1 w - - 0 29","m":"a3b4 d2d1 b4e1 d1e1","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"FvDWR","f":"3r4/p7/kn6/2p2B2/8/1Q6/PB3PPP/6K1 w - - 4 35","m":"b3e6 d8d1 e6e1 d1e1","r":427,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"FxbIr","f":"5r1k/6pp/R7/2pBp3/p1Pb4/5P1P/5P1K/8 b - - 3 30","m":"f8f4 a6a8 f4f8 a8f8","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"G35sI","f":"6k1/5pp1/P4bp1/3p4/3P4/1r2P3/2Qq1PPP/6K1 w - - 0 32","m":"c2d2 b3b1 d2c1 b1c1","r":476,"t":"backRankMate endgame mate mateIn2 short"},{"i":"G3J4F","f":"q5k1/Q4ppp/6r1/1KR5/1P6/P2r4/5P1P/R7 b - - 27 48","m":"a8a7 c5c8 d3d8 c8d8","r":464,"t":"backRankMate endgame master mate mateIn2 queenRookEndgame short"},{"i":"GCh6m","f":"3qk2r/3ppp2/rp4pp/p1P5/PnP5/1P2PN1P/3N1PP1/Q4RK1 b k - 0 18","m":"b6c5 a1h8","r":561,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"GGaX1","f":"7k/1N4pp/2p2r2/p1P5/P7/3b3P/1P3bP1/3R3K b - - 1 31","m":"d3e4 d1d8 f6f8 d8f8","r":518,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GLSgQ","f":"5r1k/pQ6/2p4p/1nP5/4p3/1B6/PP4PP/2R2q1K w - - 3 30","m":"c1f1 f8f1","r":464,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"GNNS4","f":"Q1b3k1/p1p2ppp/5n2/4r3/8/2p5/PPP2PPP/R3q1KR w - - 2 17","m":"a1e1 e5e1","r":455,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"GPGzO","f":"2Q5/2P2ppk/4p2p/3p4/p1rP4/P4N2/5PPP/6K1 w - - 0 34","m":"c8b7 c4c1 f3e1 c1e1","r":418,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GPee2","f":"2r1r1k1/pp3ppp/8/8/5Q2/P3B3/1P1N1PPP/1q4K1 w - - 0 25","m":"d2b1 c8c1 e3c1 e8e1","r":579,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"GPgQZ","f":"1k1r1r2/1ppq2p1/p6p/4n3/1bBPQ3/5P1P/PPP5/1K1R3R w - - 0 19","m":"d4e5 d7d1 h1d1 d8d1","r":555,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"GVgqV","f":"Q2q2k1/1p3ppp/4p3/8/2P5/6P1/4PPBP/R5K1 b - - 0 27","m":"d8a8 a1a8","r":504,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"GZ3MF","f":"2k1r3/2p5/pp5p/4r1p1/PP1B1p2/2Pb4/5PPP/3RRK2 w - - 2 25","m":"f1g1 e5e1 d1e1 e8e1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"GZPTn","f":"r2Br1k1/ppp2ppp/3p4/3n4/8/2Q4P/PPP2PP1/R3R1K1 b - - 0 17","m":"d5c3 e1e8","r":466,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"GfAne","f":"6k1/5pp1/7p/1PB5/4P3/2r5/P2R1PPP/6K1 w - - 1 32","m":"c5d4 c3c1 d2d1 c1d1","r":471,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"GfTHx","f":"3r2k1/4Rppp/2q2r2/2pQ4/1p6/7P/PP3PP1/4R1K1 b - - 5 26","m":"c6d5 e7e8 d8e8 e1e8","r":494,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Gli4G","f":"r2q1b1r/pp5p/2n1bkp1/4p1N1/4p3/1B6/PPP2PPP/RNBQ2K1 w - - 2 15","m":"g5e6 d8d1","r":427,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"GmdIj","f":"7k/6p1/R2p3p/2r1pp2/1r6/1BP2N2/1P3PPP/6K1 w - - 0 27","m":"c3b4 c5c1 b3d1 c1d1 f3e1 d1e1","r":473,"t":"backRankMate endgame long mate mateIn3"},{"i":"Gnpfn","f":"3q1k1r/5P2/7p/p4QpN/Pb1r4/8/B4PPP/1R4K1 w - - 1 35","m":"f5g6 d4d1 b1d1 d8d1","r":508,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"GsETe","f":"rn4k1/1b3ppp/p2qp3/8/Np6/1N6/PPP2PPP/3RR1K1 b - - 0 17","m":"d6c6 d1d8 c6e8 d8e8","r":467,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"GwpoW","f":"2k5/ppp2r1p/6p1/3p1nB1/3P4/q1P4Q/P1P1R1PP/6K1 b - - 7 22","m":"c8b8 e2e8","r":559,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"GyFgk","f":"4r1k1/5p1p/p3q1p1/1p6/1P1Q4/P7/5PPP/2r2RK1 w - - 0 27","m":"f1c1 e6e1 c1e1 e8e1","r":585,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"H2TNU","f":"r5k1/1R3ppp/4r3/8/R3p1P1/4P1P1/PPP5/2K5 b - - 0 26","m":"a8a4 b7b8 e6e8 b8e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"H4ori","f":"4rr2/pp5p/6pk/3BQnp1/3B4/8/P1P2PPP/6K1 w - - 1 24","m":"e5c7 e8e1","r":468,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HBPek","f":"8/4p1kp/R2pP3/1n2r1p1/5p2/1B3P2/1PP3PP/7K w - - 1 35","m":"a6a5 e5e1","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HCTSy","f":"6k1/2r2pp1/1n2p1p1/p7/Pp1P4/1N6/1P1R1PPP/6K1 w - - 2 31","m":"b3a5 c7c1 d2d1 c1d1","r":517,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HDRoz","f":"3r2k1/p4p1p/8/2p2bb1/8/5B2/PP2NPPP/5K1R w - - 11 24","m":"h2h4 d8d1","r":544,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HFMRF","f":"1r5k/1pq3pp/4Rp2/5P2/p7/4Q2P/6P1/7K b - - 0 40","m":"b8d8 e6e8 d8e8 e3e8","r":597,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HH2fi","f":"2kr4/p1pq2p1/2p4p/4p3/8/1NP1R1P1/PP2Q2P/K7 w - - 2 26","m":"e3e5 d7d1 e2d1 d8d1 b3c1 d1c1","r":502,"t":"backRankMate endgame long mate mateIn3"},{"i":"HKWfM","f":"rn2r1k1/p1p2ppp/1p6/2nq4/3N2Q1/2P5/PP2bPPP/RN2R1K1 b - - 1 15","m":"e2g4 e1e8","r":404,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"HMqMl","f":"5rk1/6pp/4p3/p1PpR3/Pp1P4/1P1Q4/6PP/5q1K w - - 5 30","m":"d3f1 f8f1","r":412,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HNX61","f":"3r2k1/5pbp/p5p1/1p2p3/4N3/2P2NB1/5PPP/R5K1 w - - 0 24","m":"a1a6 d8d1 f3e1 d1e1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HQEpY","f":"5k2/p2pppbp/2p2np1/8/P4P2/2P5/4bPBP/1R4K1 b - - 1 19","m":"f6d5 b1b8","r":555,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HRmqJ","f":"2kr2nr/1pp1b2p/p1p2p2/5b2/3Q4/4BN2/PPP2PPP/RN4K1 w - - 2 14","m":"d4a7 d8d1 f3e1 d1e1","r":574,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"HT5nz","f":"rn4k1/ppp2ppp/5n2/4P3/2p5/8/PP1qNPPP/3R1RK1 b - - 1 14","m":"d2e2 d1d8 f6e8 d8e8","r":581,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HUwEE","f":"2kr4/ppp2ppp/5n2/8/7R/2P5/PP4PP/R2r3K w - - 3 21","m":"a1d1 d8d1","r":446,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HWQVm","f":"5r1k/1p4pp/2p3q1/p3Pp2/Pn2p2b/1P2P1P1/1B1QBPK1/3R4 b - - 1 27","m":"f8d8 d2d8 h4d8 d1d8 g6e8 d8e8","r":403,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"HZFJA","f":"6k1/2R2p1p/4p1p1/rNn5/4P3/5P2/6PP/7K w - - 0 39","m":"c7c5 a5a1 c5c1 a1c1","r":562,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HdiR1","f":"6k1/5ppb/pq2p2p/1pb1P2P/3R1BP1/2Q2P2/PP2B3/5K2 b - - 0 28","m":"c5d4 c3c8 b6d8 c8d8","r":464,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"He3i9","f":"1rb1r3/p4pk1/2pR1R1p/2N1p3/4p3/2P5/P1P2PPP/6K1 w - - 3 21","m":"c5e4 b8b1 d6d1 b1d1","r":558,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HeTFq","f":"5r2/pp5k/3N2pp/5r2/8/8/PP4PP/R3Rq1K w - - 2 28","m":"e1f1 f5f1 a1f1 f8f1","r":548,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HewDD","f":"6k1/5ppp/4pn2/1p1p1b2/1N1P4/1P2P1P1/rPnN1PBP/2R3K1 b - - 4 21","m":"c2b4 c1c8 f6e8 c8e8","r":486,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"HiL9y","f":"6k1/6b1/r6p/6p1/2NRPp2/8/5PPP/6K1 w - - 0 31","m":"d4d7 a6a1 d7d1 a1d1","r":549,"t":"backRankMate endgame mate mateIn2 short"},{"i":"HjRDV","f":"1r4k1/p4pbp/2p1p1p1/2NnP3/3P4/5B2/Pr3PPP/RR4K1 w - - 2 20","m":"f3d5 b2b1 a1b1 b8b1","r":508,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"HkAto","f":"r1Q4k/3N2pp/p6q/1p1p3r/3PpPb1/4P3/PPR3PP/5RK1 b - - 7 31","m":"a8c8 c2c8","r":526,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"HkCzc","f":"rnb1r1k1/ppp2ppp/8/8/4PP2/P1P5/2P3PP/R1BR2K1 b - - 0 13","m":"e8e4 d1d8 e4e8 d8e8","r":541,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"HmYhM","f":"2r3k1/1p3ppp/5b2/p2p4/3q1BP1/3nQ3/1P3PP1/3BR1K1 b - - 2 29","m":"d3f4 e3e8 c8e8 e1e8","r":557,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"Hnu74","f":"3q3k/1p3Rpp/p2pn3/1r1Nb2P/4P3/3P4/1P6/1K3R2 b - - 1 29","m":"e6g5 f7f8 d8f8 f1f8","r":595,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"HpfHz","f":"2kr3r/pp2bpp1/8/2pQ3p/8/8/PP3PPP/R1B3K1 w - - 0 17","m":"d5f7 d8d1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"HpfWj","f":"6k1/pQ3ppp/1p1nr1q1/8/3P1BP1/P6P/1P3PB1/2R3K1 b - - 0 27","m":"d6b7 c1c8 b7d8 c8d8 e6e8 d8e8","r":464,"t":"backRankMate endgame long mate mateIn3"},{"i":"HwPCr","f":"r1b3k1/pp3ppp/1q2pb2/8/N7/5N2/PP1Q1PPP/3R2K1 b - - 0 20","m":"b6b5 d2d8 f6d8 d1d8 b5e8 d8e8","r":540,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"I0rz6","f":"4r1k1/5ppp/rp2q3/p2pBp2/P2Q4/1P6/5PPP/R3R1K1 w - - 2 24","m":"e5g7 e6e1 a1e1 e8e1","r":496,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"I2XH2","f":"6k1/pBq2p1p/3rb1p1/8/8/P3Q3/5PPP/2R3K1 w - - 2 26","m":"c1c7 d6d1 e3e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"I2q2i","f":"r3r1k1/4qpbp/p2p2p1/1ppb4/1P2P3/P5B1/5PPP/RB1QR1K1 w - - 0 21","m":"e4d5 e7e1 d1e1 e8e1","r":489,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"I5jMn","f":"r1b1R2k/p5pp/1p3n2/8/3P4/8/PPP3PP/5RK1 b - - 1 20","m":"f6e8 f1f8","r":584,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"I7b4O","f":"2b1r1k1/6pn/p2Q1p1p/1p6/2p1q3/1P4B1/P1P1BPPP/R5K1 w - - 0 23","m":"e2f3 e4e1 a1e1 e8e1","r":480,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"I8sDI","f":"r4rk1/ppp2ppp/8/1N6/2Pp4/3P2P1/PP1KQn1q/R3R3 b - - 1 20","m":"f8e8 e2e8 a8e8 e1e8","r":488,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"I9jV0","f":"N6k/1p1r2pp/1pn5/6q1/1P4Q1/pBPP1b1P/P4P2/R3R1K1 b - - 2 34","m":"f3g4 e1e8","r":548,"t":"backRankMate master mate mateIn1 middlegame oneMove"},{"i":"IBTmk","f":"r2q1rk1/1p5p/3p2p1/p1p5/P1Pb2b1/1P1P4/6PP/1RBQ1R1K w - - 0 21","m":"d1g4 f8f1","r":587,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"IBbgx","f":"2r1r1k1/1p2bppp/p7/4QP2/3p4/1P5P/PBqP2P1/1R2R2K b - - 0 21","m":"e7f6 e5e8 c8e8 e1e8","r":533,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"IIvNp","f":"Q6k/6pp/8/3b4/8/K1P3P1/PP1q3P/5R2 b - - 0 32","m":"d5a8 f1f8","r":426,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"IJ8rT","f":"2r3k1/p4pp1/1p2p2p/8/1P6/P3P3/3R1PPP/R1r3K1 w - - 3 25","m":"a1c1 c8c1 d2d1 c1d1","r":423,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"IKuGh","f":"2r4k/2R3pp/1p1R1p2/1b2p3/4p3/P6P/1B3PP1/6K1 b - - 0 33","m":"c8c7 d6d8 b5e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ILEga","f":"2r3k1/2N2p1p/1p1p2p1/p2Pp3/P3P3/5N2/1P3PPP/6K1 w - - 1 30","m":"c7b5 c8c1 f3e1 c1e1","r":434,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ILm6z","f":"2r3k1/pp3p2/1n1q3p/4p3/7Q/P7/1P3PPP/3R2K1 w - - 3 27","m":"d1d6 c8c1 d6d1 c1d1","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IMYCV","f":"1br2rk1/ppq3pp/2p1B3/P1P5/3Pp3/5Q1P/2P3P1/R4RK1 b - - 0 24","m":"g8h8 f3f8 c8f8 f1f8","r":536,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"IP2nd","f":"7k/r5pp/3b4/3P4/6P1/N6P/2R2P2/6K1 b - - 2 45","m":"d6a3 c2c8 a3f8 c8f8","r":534,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IP30b","f":"6k1/5ppp/8/1R2p3/4Pn2/2Pr1B2/P4K2/8 b - - 2 32","m":"d3c3 b5b8 c3c8 b8c8","r":507,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IQ5ca","f":"4r2k/p1p4p/1p3q2/2p5/2P5/1P4P1/P5PP/5R1K w - - 0 30","m":"f1f6 e8e1 f6f1 e1f1","r":471,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"IQoyq","f":"1r4k1/5ppp/3p2N1/p7/3P4/P7/4qPPP/4R1K1 w - - 0 29","m":"e1e2 b8b1 e2e1 b1e1","r":421,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ISc9F","f":"3r2k1/p1p2ppp/1p6/1P6/P7/2q1P3/5PPP/2Q3K1 w - - 0 29","m":"c1c3 d8d1 c3e1 d1e1","r":406,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"IWiqA","f":"7k/1R4pp/6n1/2p5/8/2P3P1/2r4P/4NK2 b - - 0 35","m":"c2c3 b7b8 g6f8 b8f8","r":559,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IZwJb","f":"r5k1/2p2ppp/p4q2/1Q1Pp3/8/1P5P/1PP2PP1/R5K1 b - - 0 21","m":"a6b5 a1a8 f6d8 a8d8","r":492,"t":"backRankMate endgame hangingPiece mate mateIn2 queenRookEndgame short"},{"i":"InluL","f":"3r2k1/p4ppp/1p2b3/2p5/8/1Pb1BN2/P4PPP/2R3K1 w - - 0 21","m":"c1c3 d8d1 f3e1 d1e1","r":404,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IpQ12","f":"r4rk1/1p2b1pp/2p2p2/2P1p3/1q2N3/3P1Q2/5PPP/1R4K1 w - - 0 25","m":"b1b4 a8a1 b4b1 a1b1 f3d1 b1d1","r":481,"t":"backRankMate endgame long mate mateIn3"},{"i":"Iv9to","f":"3R1rk1/1q3ppp/p4b2/2p2P2/8/PPN1Q3/2P3bP/4R1K1 b - - 0 28","m":"f8d8 e3e8 d8e8 e1e8","r":453,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"Ivuyw","f":"1k1r4/1pp5/p4b1p/4p3/6p1/P1N5/1PP1RPPP/6K1 w - - 0 22","m":"c3e4 d8d1 e2e1 d1e1","r":437,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Iz0Fj","f":"r3Q2k/6pp/4Q1p1/1q6/3P4/7P/1p4PK/r3R1R1 b - - 0 38","m":"a8e8 e6e8 b5e8 e1e8","r":492,"t":"backRankMate endgame mate mateIn2 short"},{"i":"IzOv5","f":"k7/pp6/8/3R1p1p/5P2/8/PPr2P2/6K1 b - - 0 32","m":"c2b2 d5d8","r":426,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"J4j1R","f":"4r1k1/ppnbqp2/2p3pp/8/3P4/2P3Q1/P1B2PPP/R5K1 w - - 2 21","m":"g3c7 e7e1 a1e1 e8e1","r":466,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"JIQvC","f":"6k1/2q2ppp/4p3/3n4/2pP4/1p2P3/4BPPP/Q5K1 b - - 0 26","m":"c4c3 a1a8 c7b8 a8b8","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JISBU","f":"r2q1rk1/pQ3p1p/6p1/4Pn2/4p3/2N5/PP3PPP/R1B3K1 w - - 0 18","m":"c3e4 d8d1","r":436,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JM1OR","f":"r1b1k2r/pp2ppbp/6p1/8/B3n3/2N5/PK3PPP/R2R4 b kq - 5 16","m":"e8f8 d1d8","r":587,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JMq8Y","f":"r4rk1/p1pn2pp/1p1pp3/8/2PPQ3/P1P5/6PP/R1B1Rq1K w - - 2 17","m":"e1f1 f8f1","r":468,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JQQGs","f":"8/p1k3pp/2p5/1p2N3/8/4R1P1/PPPR4/1K3r2 w - - 1 27","m":"d2d1 f1d1","r":429,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"JREav","f":"4r2k/6pp/4Q3/5p2/3b4/8/1P4PP/R6K b - - 0 42","m":"e8e6 a1a8 e6e8 a8e8","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JV6Xv","f":"6k1/5pp1/6bp/2p4P/P1q1p1P1/2PpP3/3K1P2/1Q6 b - - 0 34","m":"g6h7 b1b8","r":485,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"JWEXr","f":"6k1/pr1N1ppp/2R1p3/3p4/1P1P2n1/r3P1P1/5P1P/5RK1 b - - 0 26","m":"b7d7 c6c8 d7d8 c8d8","r":457,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JckzQ","f":"r1b1r1k1/1p3p1p/p4Bp1/8/2p4Q/P1N5/1PP2PPP/R3q1K1 w - - 3 18","m":"a1e1 e8e1","r":436,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"JdzvM","f":"6k1/6pp/2p2p2/8/1P6/3n4/r4PPP/3R2K1 w - - 0 36","m":"d1d3 a2a1 d3d1 a1d1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"JgXrs","f":"6rk/pp5q/2n1r2p/2p2B2/7Q/1PP3R1/P4PPP/6K1 w - - 0 30","m":"f5h7 e6e1","r":482,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Jhw7q","f":"2bB3k/p1N4p/8/2qN1pp1/3bP3/P7/5PPP/3R2K1 w - - 2 31","m":"d1d4 c5c1 d4d1 c1d1","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JlCu2","f":"r1bk1Q1r/ppppn2p/1bn5/4q3/2BPP3/2P5/PP4PP/RN3RK1 b - - 2 13","m":"h8f8 f1f8","r":540,"t":"backRankMate mate mateIn1 oneMove opening"},{"i":"JqL33","f":"1k3R2/ppp5/8/2P5/4q3/P5PP/1B1r4/6K1 b - - 1 28","m":"d2d8 f8d8","r":478,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"JsPIH","f":"6k1/5ppp/4p3/2Np4/1p1P4/2pnP2P/R4PPK/2r5 b - - 5 34","m":"d3c5 a2a8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"JueLY","f":"3r4/1b3pk1/6pp/pPP1p3/8/P1R5/3r1PPP/1BR3K1 w - - 1 37","m":"c5c6 d2d1 c1d1 d8d1","r":456,"t":"backRankMate endgame mate mateIn2 short"},{"i":"JwxGP","f":"6k1/p4p1p/6p1/2R1p3/4P3/3r4/P4PPP/6K1 w - - 0 27","m":"c5e5 d3d1","r":416,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"JySiZ","f":"r5k1/1ppqRppp/1p1p2b1/3P4/2PN4/1P4P1/6BP/4R1K1 b - - 6 23","m":"d7g4 e7e8 a8e8 e1e8","r":481,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"K3iE3","f":"Q5k1/5ppp/3rb2b/4p3/4P2P/2P5/1q2BPP1/R5K1 b - - 1 26","m":"e6c8 a8c8 d6d8 c8d8","r":573,"t":"backRankMate hangingPiece master mate mateIn2 middlegame short"},{"i":"K6r6B","f":"3rr1k1/ppN3p1/2p1p1Np/4P1b1/1nP5/8/PP2RPPP/3R2K1 w - - 2 22","m":"c7e8 d8d1 e2e1 d1e1","r":484,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"KBWe8","f":"4r1k1/pp3ppp/8/5b2/5P2/1P5P/P3QPP1/3R2K1 b - - 0 25","m":"e8e2 d1d8 e2e8 d8e8","r":543,"t":"backRankMate endgame mate mateIn2 short"},{"i":"KFIDM","f":"r2R2k1/4Qppp/8/2p5/1p6/1P4qP/2P3P1/7K b - - 1 35","m":"a8d8 e7d8","r":593,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KG7Zb","f":"5bk1/1PB2ppp/2r5/p7/4P3/8/P4PPP/6K1 w - - 0 31","m":"b7b8q c6c1","r":503,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KHYJb","f":"Q2r2k1/2R2ppp/pp4q1/8/8/1P2P1B1/P4PPP/2R3K1 b - - 0 27","m":"d8a8 c7c8 a8c8 c1c8","r":462,"t":"backRankMate endgame mate mateIn2 short"},{"i":"KPnLc","f":"6k1/1BP2pp1/1P5p/1r6/p2p4/R2q4/5PPP/6K1 w - - 0 28","m":"a3d3 b5b1 d3d1 b1d1","r":459,"t":"backRankMate endgame mate mateIn2 short"},{"i":"KRh6j","f":"5r1k/4NNpp/b3p3/7n/8/6P1/Pr2PP1P/R2R2K1 b - - 0 21","m":"f8f7 d1d8 f7f8 d8f8","r":593,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"KWA9G","f":"2rr3k/pp4p1/4RbQp/2p5/2P5/1P6/P5PP/5R1K w - - 3 29","m":"f1f6 d8d1 e6e1 d1e1 f6f1 e1f1","r":445,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"KWISX","f":"2rR2k1/5ppb/2r4p/p4PnP/1p4P1/P1N1B3/1P6/3R2K1 b - - 1 33","m":"c8d8 d1d8","r":409,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"KYDAG","f":"5rk1/pR5p/5pp1/8/P7/1P6/1r4PP/4R2K w - - 0 33","m":"e1e7 b2b1 e7e1 b1e1","r":494,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Kc4jR","f":"1R6/4nk2/3r2p1/8/4P3/1q6/5PPP/6K1 w - - 0 31","m":"b8b3 d6d1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Kd35i","f":"2r3k1/5ppn/4p3/p7/8/4PN2/4RPPP/6K1 w - - 0 28","m":"f3d4 c8c1 e2e1 c1e1","r":434,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Kef8Y","f":"5rk1/pp1Q1ppp/8/3p4/3P4/6P1/qr2PPBP/R4K2 w - - 0 22","m":"a1a2 b2b1","r":514,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"KfheU","f":"5b2/1R5p/r4kp1/4p3/3P4/4PN2/5PPP/6K1 w - - 1 29","m":"f3e5 a6a1 b7b1 a1b1","r":457,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Kiro6","f":"r2Q2k1/5ppp/8/p7/8/1Pq1B3/Pb3PPP/3R2K1 b - - 2 25","m":"a8d8 d1d8","r":443,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"Km1mf","f":"3r2k1/pp3pp1/1p3n1p/4BB2/1q2P3/3r1Q2/P4PPP/1R1R2K1 w - - 0 21","m":"b1b4 d3d1 f3d1 d8d1","r":433,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"KoPEw","f":"6k1/4bppp/5n2/2rp4/Q2Np3/4P3/3N1PPP/1q4K1 w - - 0 24","m":"d2b1 c5c1 a4d1 c1d1","r":586,"t":"backRankMate endgame fork master mate mateIn2 short"},{"i":"KsxiK","f":"3r2k1/5ppp/p4b2/1p6/1P1r4/P5B1/2R2PPP/2R3K1 w - - 1 25","m":"c2a2 d4d1 c1d1 d8d1","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Ksxvt","f":"3r3k/1R4Rp/2p2n2/p7/6N1/b5P1/6PP/7K w - - 1 38","m":"g4f6 d8d1","r":420,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Kuz3u","f":"rn2k2r/pp2pp1p/1q1p2p1/2pP1b2/2P1P3/1P6/P2N1PPP/Q3KB1R b Kkq - 0 11","m":"f5d7 a1h8","r":565,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Kwyd0","f":"1r3rk1/5p1p/5Qp1/8/8/8/P4PPP/3R2K1 w - - 2 25","m":"d1d7 b8b1 d7d1 b1d1","r":542,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Kxra5","f":"4r1k1/1p3bp1/2p2n1p/p7/3N4/P2q4/1P4PP/R1B2Q1K w - - 6 27","m":"f1d3 e8e1 d3f1 e1f1","r":554,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"L2Rhj","f":"k2r4/pp2b1p1/8/1P1q4/K2P1p2/4P3/1PQB3r/R1R5 b - - 3 31","m":"f4e3 c2c8 d8c8 c1c8","r":537,"t":"backRankMate master mate mateIn2 middlegame sacrifice short"},{"i":"L2nPe","f":"2b2r1k/5Npp/pp5q/8/5P2/6P1/PP5P/R3R1K1 b - - 0 25","m":"f8f7 e1e8 f7f8 e8f8","r":445,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"L4xNV","f":"3r1rk1/1p3p2/6nQ/p1p2q2/8/8/P5PP/5R1K w - - 0 25","m":"f1f5 d8d1 f5f1 d1f1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"L5fnR","f":"r1bQ1rk1/p3nppp/8/4p3/8/2N5/PPP2PPP/2KR3R b - - 0 14","m":"f8d8 d1d8","r":503,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"L69R6","f":"Q4r1k/p5pp/5p2/5P2/2P5/1R6/2q2PP1/1R4K1 b - - 0 31","m":"f8a8 b3b8 a8b8 b1b8","r":458,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"L6IFz","f":"2kr3r/ppp2p2/2p5/2P4p/4n2p/2P5/PP3PPP/RN2R1K1 w - - 1 16","m":"e1e4 d8d1 e4e1 d1e1","r":416,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LBWkQ","f":"3r2k1/pp3ppp/4pR2/8/8/2q3Q1/PPP3PP/7K w - - 0 22","m":"g3c3 d8d1 c3e1 d1e1 f6f1 e1f1","r":448,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"LBbPB","f":"r1bqR2k/ppp2Qpp/2n5/8/3p4/1BnP1N2/P1P3PP/R1B3K1 b - - 0 14","m":"d8e8 f7e8","r":586,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"LChSi","f":"3r2k1/1p3p1p/pP2p1p1/P1p2b2/2P5/5N2/1q2QPPP/6K1 w - - 0 27","m":"e2b2 d8d1 f3e1 d1e1","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LDQWE","f":"6k1/p4ppp/1p2r3/1P6/P2PP3/r2n1P1P/2R3P1/6K1 b - - 1 28","m":"a3a4 c2c8 e6e8 c8e8","r":432,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LFEqN","f":"2r4k/3q1pp1/7p/1p6/8/3QR3/1P3PPP/6K1 w - - 2 30","m":"d3d7 c8c1 d7d1 c1d1 e3e1 d1e1","r":455,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"LFwiZ","f":"r5k1/pp2r2p/2p3p1/3p4/3P1Q2/P1P2B2/1P3PPP/1R2q1K1 w - - 1 25","m":"b1e1 e7e1","r":463,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LGmY9","f":"2k2r2/ppp5/2b1B3/2p3p1/4Pp2/2K2Pp1/PPPR2Pr/3R4 b - - 5 31","m":"c8b8 d2d8 f8d8 d1d8","r":531,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LGs73","f":"3r1rk1/pQ3pp1/7p/4p3/4P3/8/2P2qPP/5R1K w - - 0 32","m":"f1f2 d8d1 f2f1 d1f1","r":483,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"LHL8w","f":"r1b1r1k1/ppq2ppp/2p2p2/8/4nN2/5P1P/P1PQ2P1/R3R1K1 b - - 0 21","m":"e4d2 e1e8","r":544,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"LM9Nj","f":"r5k1/ppp2ppp/6r1/3q3n/3p4/P2P1N1P/1PP1QPP1/R3R1K1 b - - 7 19","m":"h5f4 e2e8 a8e8 e1e8","r":576,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"LMlix","f":"k1Qr4/pp5p/3r1pp1/1P6/4P3/2R2P2/q3BKPP/2R5 b - - 2 27","m":"d8c8 c3c8","r":439,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LSggz","f":"5r1k/pp4pp/2p5/4R3/1n5P/6P1/PP3QP1/6K1 b - - 0 29","m":"f8f2 e5e8 f2f8 e8f8","r":507,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LU2sO","f":"r5k1/3q1ppp/3pp3/3b4/1Q1P1P2/8/R1PK2PP/5R2 b - - 0 25","m":"a8a2 b4b8 d7c8 b8c8","r":543,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LUY9F","f":"6k1/5p1p/6p1/1P1P4/rpqR4/8/6PP/7K w - - 0 34","m":"d4c4 a4a1 c4c1 a1c1","r":475,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"LUvAM","f":"4r1k1/p4ppp/8/2r1p3/2PP4/6P1/P4PKP/R3R3 b - - 0 23","m":"e5d4 e1e8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"LVRwb","f":"6k1/5ppp/1b2p3/4P3/R7/8/2r3PP/3K4 b - - 6 36","m":"c2g2 a4a8 b6d8 a8d8","r":440,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LVute","f":"2r3k1/1bQ2ppp/1p3nq1/1Bp5/8/P3pP1P/6PB/3R2K1 b - - 4 28","m":"c8c7 d1d8 f6e8 d8e8","r":420,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"LXukR","f":"r1b2k2/p1p1q3/2pprpB1/6bQ/7P/5R2/PPP3P1/1K3R2 w - - 6 23","m":"h4g5 e6e1 f1e1 e7e1","r":535,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"LZo5m","f":"3r4/p4p2/4b1R1/1R2q3/P2kB3/2r2P2/4Q1PP/7K w - - 14 36","m":"b5e5 c3c1 e2d1 c1d1","r":599,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"LhUcw","f":"3r2k1/2p2ppp/p1p3b1/8/8/1r2B3/PP3PPP/RN4K1 w - - 0 19","m":"a2b3 d8d1","r":453,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Lku6u","f":"r5k1/5ppp/4p3/B2pP3/1PnP4/8/2R2PPP/6K1 w - - 3 30","m":"a5c7 a8a1 c2c1 a1c1","r":536,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LsKtm","f":"6r1/3kb1r1/2p1p2R/3pP3/p2P1p2/4B1P1/PP2R3/K7 w - - 0 39","m":"g3f4 g7g1 e3g1 g8g1 e2e1 g1e1","r":535,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"LuQ83","f":"k1Q5/pp2p1b1/4q1p1/7p/3P4/4P3/1P3PPP/2R3K1 b - - 0 25","m":"e6c8 c1c8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Lvcta","f":"5rk1/R5np/7B/2R5/3b4/2p5/6PP/6K1 w - - 4 37","m":"g1h1 f8f1","r":554,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"LwXNY","f":"6k1/Rpp2ppp/8/8/2P2bP1/2N4P/1P4K1/4r3 b - - 1 24","m":"b7b6 a7a8 e1e8 a8e8","r":408,"t":"backRankMate endgame mate mateIn2 short"},{"i":"LxnzS","f":"1k6/ppp5/3b4/8/3Pr3/2P4p/P7/1KB3R1 b - - 1 25","m":"h3h2 g1g8 d6f8 g8f8 e4e8 f8e8","r":468,"t":"backRankMate endgame long mate mateIn3"},{"i":"Lzn2p","f":"2r3k1/pp2bpp1/4p1n1/6PQ/3pNP2/1q1P4/2rB4/3RK2R b K - 1 30","m":"g8f8 h5h8 g6h8 h1h8","r":550,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"M5Qef","f":"2r1kbnr/p2p1ppp/Qp6/4p3/4N3/8/PP1BBPPP/K1q3NR w k - 1 16","m":"d2c1 c8c1","r":495,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"M8pdc","f":"r3rR1k/6pp/7b/2PNp1q1/4P2n/4pQ1P/4N1P1/5R1K b - - 2 34","m":"e8f8 f3f8 a8f8 f1f8","r":522,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"MHsSk","f":"1k2r3/ppp1Q2p/8/8/8/P7/1PP5/1K1R4 b - - 0 29","m":"e8e7 d1d8","r":416,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"MJQjH","f":"4Q1k1/1pp2ppr/p7/4R3/q4P2/2P4P/1P4PK/8 b - - 0 38","m":"a4e8 e5e8","r":406,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MJwic","f":"2kr1r2/1pp2p1p/1p3Q1B/1b2R3/8/2P5/PP4PP/3R3K w - - 0 23","m":"e5b5 d8d1 f6f1 d1f1","r":588,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"MKNdZ","f":"5rk1/ppp3bp/3p2p1/3Np3/6P1/1P5N/PBPP3P/2K2q1Q w - - 3 21","m":"h1f1 f8f1","r":449,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MRf4N","f":"r4rk1/ppp3p1/7p/2b2q1Q/3pN3/3P2R1/PP4PP/R6K w - - 1 19","m":"h5h6 f5f1 a1f1 f8f1","r":506,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"MSxlD","f":"r5k1/2R2ppp/1pp1p3/4P3/8/2P5/P1P2PPP/6K1 b - - 0 22","m":"a8a2 c7c8","r":500,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"MWf5D","f":"r5k1/pp3ppp/1b4r1/3p2q1/3N4/2P2P2/PP2Q1PP/4RR1K b - - 5 21","m":"g6h6 e2e8 a8e8 e1e8","r":534,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"MavJQ","f":"4r2k/qp2Q1pp/p1R5/5p2/PP1p4/3P2P1/4PP1P/3R2K1 b - - 0 26","m":"e8e7 c6c8 e7e8 c8e8","r":536,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"MelFO","f":"1r3Q1k/pr2b1pp/4p3/3pP3/b1pN4/2P1B3/qP3RPP/5RK1 b - - 9 26","m":"e7f8 f2f8 b8f8 f1f8","r":428,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Mg2OG","f":"4r2k/2p3p1/p7/7p/2R5/2N1r3/PP3NPP/3R2K1 w - - 0 25","m":"c4c7 e3e1 d1e1 e8e1","r":545,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MgjdY","f":"6k1/2q2p1p/4p1p1/pr1p1n2/P4B2/2P2Q2/2P2PPP/6K1 w - - 0 22","m":"f4c7 b5b1 f3d1 b1d1","r":502,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Mj1c8","f":"r1br4/p4kbp/2Q1p1p1/8/4p3/1Bq5/PPP2PPP/R1B3K1 w - - 0 18","m":"b2c3 d8d1","r":536,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Mjoux","f":"5rk1/p4pp1/b6p/3Bq3/P3p3/6R1/2r2PPP/R1Q3K1 w - - 0 21","m":"c1c2 e5a1 c2b1 a1b1","r":572,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"MlQVV","f":"1k2r3/ppp2R2/8/1n2B3/8/8/P5KP/8 b - - 0 43","m":"e8e5 f7f8 e5e8 f8e8","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"MlX4K","f":"1b2r2k/6pp/2p5/pPP3rq/7Q/P2P2B1/5P2/3RR1K1 b - - 4 35","m":"h5h4 e1e8","r":512,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"MnwmH","f":"4r3/1R3pkp/2p2np1/8/3B4/2P2B2/r4PPP/4R1K1 w - - 1 22","m":"e1e8 a2a1 b7b1 a1b1 f3d1 b1d1 e8e1 d1e1","r":552,"t":"backRankMate endgame mate mateIn4 veryLong"},{"i":"Mw44f","f":"4r3/ppkn1q2/2p5/8/6P1/8/PPP5/1K3Q2 w - - 0 30","m":"f1f7 e8e1","r":428,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"MzBUp","f":"3r2k1/2p2ppp/p7/2B5/8/2P5/P1b2PPP/4R1K1 w - - 0 19","m":"e1e7 d8d1 e7e1 d1e1","r":404,"t":"backRankMate endgame mate mateIn2 short"},{"i":"N5iS2","f":"1rb2Q1k/p5pp/2pbp3/P1pp4/6N1/1P1P3P/2q3P1/5R1K b - - 3 27","m":"d6f8 f1f8","r":483,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"N8epJ","f":"3r2k1/p4ppp/1p6/8/1N6/1Pb5/P4PPP/4R1K1 w - - 1 25","m":"e1d1 d8d1","r":460,"t":"backRankMate endgame hangingPiece master masterVsMaster mate mateIn1 oneMove"},{"i":"NBCab","f":"2r3k1/5p2/6pp/p7/3Bp3/1P6/P3nPPP/4R1K1 w - - 1 26","m":"e1e2 c8c1 e2e1 c1e1","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ND8mo","f":"7k/pp4p1/1b6/2pP4/8/P1P1r3/2R3PP/5R1K w - - 1 33","m":"f1f3 e3e1 f3f1 e1f1","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NEVtW","f":"r3r1k1/pp3p2/3q2p1/5pPp/3p1Q1P/3R4/PPP5/1K6 w - - 0 27","m":"f4d6 e8e1 d3d1 e1d1","r":473,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"NFUBq","f":"r6k/6pp/p2R1p2/p1p1p3/2P4q/3Q4/1P3P1P/6K1 b - - 1 30","m":"e5e4 d6d8 a8d8 d3d8","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NGvCf","f":"1k1r2nr/ppp3pp/2n1Q3/8/1b3NP1/7P/PP2PPB1/R2q1K1R w - - 2 18","m":"a1d1 d8d1","r":458,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"NKduO","f":"5rk1/1p2bppp/p3p3/4P3/2P2PQ1/3r1R2/P5PP/R2q3K w - - 1 28","m":"a1d1 d3d1 f3f1 d1f1","r":473,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NRPX8","f":"4r3/R5p1/5nkp/8/P2P3B/8/4rPPP/R5K1 w - - 0 26","m":"h4g3 e2e1 a1e1 e8e1","r":454,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NVNDI","f":"2r3k1/5ppp/8/R7/3b4/B7/5PPP/5K2 b - - 0 30","m":"c8c2 a5a8 c2c8 a8c8","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NaiEX","f":"N1r5/6pk/5p1p/8/4R3/8/P4PPP/R1q3K1 w - - 0 41","m":"a1c1 c8c1 e4e1 c1e1","r":460,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Nb7Tj","f":"3r2k1/5ppp/p7/1p6/4B3/6P1/PPP4P/1K1q3R w - - 2 27","m":"h1d1 d8d1","r":407,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"NeHLE","f":"4r1k1/ppR2ppb/7p/3p1P2/3P2P1/1P2R2P/P5K1/8 b - - 0 30","m":"e8e3 c7c8 e3e8 c8e8","r":556,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NftsJ","f":"3r1r1k/pp2p1bp/4n1p1/P7/5P2/8/QP3qPP/R1B2R1K w - - 1 23","m":"f1f2 d8d1 f2f1 d1f1","r":412,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"NhP25","f":"r5k1/Qbq1rppp/8/4p3/8/2P2P2/PP1R2PP/3R2K1 b - - 0 20","m":"a8a7 d2d8 c7d8 d1d8 e7e8 d8e8","r":400,"t":"backRankMate endgame long mate mateIn3"},{"i":"Nobvy","f":"8/ppp1k3/2p5/4Pbp1/4N3/5PB1/PPP5/1K1rR2r w - - 2 23","m":"e1d1 h1d1","r":483,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Nosp8","f":"3r3k/3q2pp/5n2/4pPB1/1Q6/2P5/5PPP/R5K1 w - - 1 23","m":"g5f6 d7d1 a1d1 d8d1","r":515,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"NpfxW","f":"5rk1/pQ2n1pp/4p3/3p4/8/8/PPP3PP/7K w - - 0 30","m":"b7e7 f8f1","r":427,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"Nqw35","f":"3rQ1k1/ppp2ppp/2p2q2/2P3n1/6b1/2P2N2/PP3PPP/RNB1R1K1 b - - 0 14","m":"d8e8 e1e8","r":553,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"NsqZq","f":"8/pk1r1pp1/2RBp3/4Pr2/P2P3p/1P2P3/6PP/2R2q1K w - - 7 29","m":"c1f1 f5f1","r":511,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"NxKU3","f":"6k1/5ppp/1R1nr3/1p3P2/1P6/6P1/5PKP/8 b - - 0 31","m":"d6f5 b6b8 e6e8 b8e8","r":545,"t":"backRankMate endgame mate mateIn2 short"},{"i":"NyH1q","f":"5k2/4ppbp/6p1/8/8/1b1BBP2/r1PK2PP/1R6 b - - 3 22","m":"b3d5 b1b8","r":459,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"O0ivo","f":"5r2/p1k1B1pp/2p5/4P3/3P4/P7/P5PP/Q4q1K w - - 7 26","m":"a1f1 f8f1","r":582,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"O25VG","f":"3r2k1/8/p1p1qPpp/1pP5/1P6/6B1/5PPP/4R1K1 w - - 0 32","m":"e1e6 d8d1 e6e1 d1e1","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"O3pv2","f":"5r1k/5Qpp/2Rp4/p3p1b1/4P3/2P3PP/1q3PK1/3R4 b - - 0 32","m":"f8f7 c6c8 g5d8 c8d8 f7f8 d8f8","r":591,"t":"backRankMate endgame long mate mateIn3"},{"i":"O55wU","f":"5r2/ppp2pkp/1b6/8/4N3/2Pr4/PP4PP/R1B2R1K w - - 2 26","m":"f1f3 d3d1 f3f1 d1f1","r":519,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"O7FAa","f":"8/5p1k/4p1pp/p7/3P4/1N6/rPQ2PPP/6K1 w - - 0 39","m":"b3c5 a2a1 c2b1 a1b1","r":436,"t":"backRankMate endgame mate mateIn2 short"},{"i":"O9fuh","f":"4Q2k/p1pq1bpp/3b2r1/8/8/2P5/PP2RPPP/4R1K1 b - - 0 25","m":"f7e8 e2e8 d7e8 e1e8 d6f8 e8f8","r":423,"t":"backRankMate endgame long mate mateIn3"},{"i":"OB8Iq","f":"2k1r3/2pbq3/7p/1p1pN1p1/p2P4/2P3Q1/P4PPP/1R4K1 w - - 2 31","m":"e5d7 e7e1 b1e1 e8e1","r":473,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"OC6vk","f":"6k1/5ppp/p1NR1nb1/2p5/2P5/1P3PP1/P4KP1/4r3 b - - 2 27","m":"e1a1 d6d8 f6e8 d8e8","r":521,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ODHSY","f":"r3r3/1p3kpQ/p1p1q2p/8/P2R4/7P/1P3PPB/5RK1 w - - 1 29","m":"f1d1 e6e1 d1e1 e8e1","r":515,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"OH7LD","f":"7k/6pp/p7/8/P7/4Q3/KR5P/2q5 b - - 0 46","m":"c1e3 b2b8 e3e8 b8e8","r":571,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"OHlq8","f":"4R3/p4rpk/5b1p/2np3B/8/6B1/P1r2PPP/6K1 w - - 2 26","m":"h5f7 c2c1 e8e1 c1e1","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OHnzE","f":"7k/p4Qpp/2p2r2/5p2/4p3/P3P1Pq/5P1P/1R3RK1 b - - 0 26","m":"f6f7 b1b8 f7f8 b8f8","r":518,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"OIt23","f":"2r5/8/5pk1/8/8/1P6/1R3PPP/6K1 w - - 1 37","m":"b3b4 c8c1","r":439,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"OJnTR","f":"2k4r/1bppR3/1p3n1p/p7/3n4/1P4P1/1KP2P1P/4R3 b - - 2 28","m":"f6d5 e7e8 h8e8 e1e8","r":456,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OJrfM","f":"2r3k1/5ppp/p1r1p3/1pB1P3/5P2/2PR4/P5PP/3R2K1 b - - 0 27","m":"c6c5 d3d8 c8d8 d1d8","r":439,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"OKJeu","f":"4r1k1/pp3ppp/5n2/3p4/1b1P4/5Q2/PP1B1PPP/RNq3K1 w - - 2 17","m":"d2c1 e8e1","r":434,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"OLObS","f":"3rr1k1/1pp1qpp1/p6p/3p4/3P4/P1N2B2/1PQ2PPP/2b2RK1 w - - 0 20","m":"f1c1 e7e1 c1e1 e8e1","r":569,"t":"backRankMate master mate mateIn2 middlegame sacrifice short"},{"i":"OLd1Q","f":"3r1rk1/pbq3pp/2p5/4Bp2/2P5/1B2Q3/P1P2PPP/3R2K1 w - - 7 21","m":"e5c7 d8d1 e3e1 d1e1","r":479,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"ONu3t","f":"r5k1/1N3ppp/1n2p3/3p4/5P2/8/6PP/1R5K w - - 0 32","m":"b1b6 a8a1 b6b1 a1b1","r":548,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OSYxF","f":"r1b1r1k1/ppp2ppp/8/8/4N2P/2P5/PPP3P1/2KR3R b - - 0 17","m":"e8e4 d1d8 e4e8 d8e8","r":438,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OjCAe","f":"k1Q3r1/pp5p/4pB2/3pPp1q/1P6/P5p1/8/1KR5 b - - 7 38","m":"g8c8 c1c8","r":452,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"Omeio","f":"4k1r1/ppp2pPp/2n5/8/1bb5/8/P1QrNPPP/5K1R w - - 4 18","m":"c2c4 d2d1","r":576,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"OpB7D","f":"3Q4/1N1n2p1/p3k3/1p4p1/2r1n3/8/PP6/K1q2R2 w - - 2 38","m":"f1c1 c4c1","r":450,"t":"backRankMate endgame master masterVsMaster mate mateIn1 oneMove"},{"i":"OtNj0","f":"6k1/R4ppp/p2r1n2/1p6/2p5/P6P/B1P2PP1/6K1 b - - 1 31","m":"f6e4 a7a8 d6d8 a8d8","r":525,"t":"backRankMate endgame mate mateIn2 short"},{"i":"OwKao","f":"r1b2rk1/1p4p1/4p2p/p2pN3/3p3Q/6R1/P5PP/1n1R1q1K w - - 2 26","m":"d1f1 f8f1","r":529,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"OzBYD","f":"Q5k1/1q3ppp/4p3/3pP3/8/2P2N2/5PPP/R5K1 b - - 0 28","m":"b7a8 a1a8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"OzMqu","f":"1r6/5k1p/p3pp2/8/8/8/P1p2PPP/2R3K1 w - - 1 33","m":"c1c2 b8b1 c2c1 b1c1","r":454,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"P5slw","f":"r1b2r1k/ppQp2pp/3b3q/8/6B1/2P1P1P1/PP1N3P/3R1RK1 b - - 0 18","m":"d6c7 f1f8","r":499,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"P6fOp","f":"5rk1/pppr1ppp/2n2q2/8/8/4Q1NP/PPP2PP1/R3R1K1 b - - 0 20","m":"f8d8 e3e8 d8e8 e1e8","r":550,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"P8hqD","f":"3r2k1/p1p2ppp/2p1p1n1/4P3/8/P1R1BN2/1qQ2PPP/6K1 w - - 0 22","m":"c2b2 d8d1 f3e1 d1e1","r":479,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PAlgb","f":"2r3k1/5ppp/3Rpb2/4P3/8/P1N1P3/1r4PP/3R2K1 b - - 0 23","m":"c8c3 d6d8 f6d8 d1d8","r":539,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"PBOsZ","f":"4r1k1/4qppp/p7/1p4b1/8/1PN2Q2/1PP2PPP/R2r2K1 w - - 0 21","m":"a1d1 e7e1 d1e1 e8e1","r":471,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"PCQNb","f":"r2q1bnr/pp3kp1/8/4p2p/4P3/2N3Q1/PP2nPPP/R1BR2K1 w - - 2 14","m":"c3e2 d8d1","r":421,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"PEIHu","f":"r4rk1/2p3pp/p1R5/2b1q3/4p1b1/3P2Q1/PPP3PP/RNB4K w - - 0 15","m":"g3e5 f8f1","r":558,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"PFSLI","f":"2r3k1/3nRN1p/p4pp1/1p6/8/8/PP3PPP/6K1 w - - 0 29","m":"e7d7 c8c1 d7d1 c1d1","r":420,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PJugj","f":"3r1rk1/7p/p5p1/2p1qp2/8/1P5Q/P1P3PP/4R2K w - - 0 28","m":"e1e5 d8d1 e5e1 d1e1","r":490,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"PO1em","f":"3rQ1k1/p4ppp/b1p5/5n2/1PP5/P1N5/6PP/4R2K b - - 1 22","m":"d8e8 e1e8","r":415,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"PSi5r","f":"4q2k/Rpp3pp/8/5p2/3P4/1PP1B3/1P3KPP/8 b - - 0 27","m":"e8c6 a7a8 c6e8 a8e8","r":556,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PVqlR","f":"3r2k1/ppp2pp1/7p/3rp2P/4q3/3P4/PPP2QP1/1K1R1R2 w - - 0 23","m":"d3e4 d5d1 f1d1 d8d1","r":455,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"PWmO6","f":"r2r2k1/pp3ppp/2p5/3N2q1/3P4/7P/PP2QPP1/R3R2K b - - 0 18","m":"d8d5 e2e8 a8e8 e1e8","r":533,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"PXqn0","f":"6k1/r4pbp/p1r3p1/1N3b2/5B2/8/PP1R1PPP/6K1 w - - 0 25","m":"b5a7 c6c1 d2d1 c1d1","r":428,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Pbche","f":"r2r2k1/pb3ppp/1p2p1q1/8/1P1n4/P4N2/3QBPPP/2RR3K b - - 1 18","m":"d4f3 d2d8 a8d8 d1d8","r":587,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"PfrjK","f":"3r3k/6pp/8/p1B4r/P2P1Q2/8/4q1PP/5R1K b - - 0 35","m":"d8e8 f4f8 e8f8 f1f8","r":582,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"PhTgS","f":"6k1/1p3ppp/4pn2/3r1b2/4pq2/r2P1N1P/4BPP1/2RR2K1 b - - 0 28","m":"e4d3 c1c8 d5d8 c8d8 f6e8 d8e8","r":576,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"PiV9P","f":"5rk1/ppp3p1/5q1p/2b1p3/4P3/2BP2Q1/PPP3PP/R5K1 w - - 4 19","m":"g1h1 f6f1 a1f1 f8f1","r":529,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"Piw6I","f":"3r2k1/pp3ppb/7p/2Nr4/3P2P1/4R2P/PP4P1/4R1K1 b - - 2 24","m":"d5d4 e3e8 d8e8 e1e8","r":539,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Pl3af","f":"2r1k3/4P1b1/p3b1pp/1p6/1N6/P7/1P3PPP/4R1K1 w - - 0 32","m":"e1e6 c8c1 e6e1 c1e1","r":435,"t":"backRankMate endgame mate mateIn2 short"},{"i":"PlesJ","f":"6k1/5pp1/8/p2Pb2p/p7/P7/2r2PPP/4R1K1 w - - 0 27","m":"e1e5 c2c1 e5e1 c1e1","r":433,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PtTre","f":"3rr2k/1p3RR1/2n5/p3p3/8/2P1PNB1/PP3PPP/6K1 w - - 7 27","m":"f3g5 d8d1","r":477,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"PvlYA","f":"3r2k1/4qp1p/6p1/8/8/8/5PPP/4R1K1 w - - 0 27","m":"e1e7 d8d1 e7e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"PxWnc","f":"3Q2k1/p1p2ppp/2p3q1/6b1/5Pb1/PPN5/1Bp4P/2K1R3 b - - 0 23","m":"g5d8 e1e8","r":551,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"PyCOR","f":"6k1/5pp1/2p1p2p/4P3/1Pr5/8/3r1PPP/2R3K1 w - - 0 28","m":"c1c4 d2d1","r":455,"t":"backRankMate endgame master mate mateIn1 oneMove rookEndgame"},{"i":"Q04xm","f":"2r2rk1/pn5p/4p1p1/3pR1B1/1P6/1Q6/P1P3PP/3R1q1K w - - 2 25","m":"d1f1 f8f1","r":522,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Q0GOr","f":"3r3r/p1Q3p1/5bkp/3N4/8/5N2/PP3PPP/6K1 w - - 3 23","m":"d5f6 d8d1 f3e1 d1e1","r":462,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Q4VNJ","f":"r4rk1/pb3ppp/1p2p1q1/8/8/1P1QP1N1/P4PPP/2RR2K1 b - - 3 20","m":"f8d8 d3d8 a8d8 d1d8","r":505,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Q6WC4","f":"3rr3/1k6/1pR2np1/5p2/1P1p4/P7/5PPP/4R1K1 w - - 1 27","m":"c6f6 e8e1","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"Q6lBS","f":"2rQ2k1/p4ppp/8/1N2q3/P3n3/8/6PP/3R2K1 b - - 3 33","m":"c8d8 d1d8 e5e8 d8e8","r":430,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QByFP","f":"2r2r2/5pk1/p5P1/q1p5/3bB3/7R/PPQ3PP/R3q2K w - - 0 27","m":"a1e1 a5e1","r":484,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"QEzX3","f":"8/5ppp/2r1p1k1/8/4N3/1P6/r4PPP/2R4K w - - 2 25","m":"c1c6 a2a1 c6c1 a1c1","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QLBsR","f":"3r4/Q7/2pq1k1p/4nbp1/8/P1N5/1PP2PPP/4R1K1 w - - 1 26","m":"e1d1 d6d1 c3d1 d8d1","r":433,"t":"backRankMate master masterVsMaster mate mateIn2 middlegame short"},{"i":"QOgUG","f":"5rk1/1b3p2/4p1p1/1pp3Np/r2PP2Q/1q6/3R1PPP/1R4K1 w - - 1 29","m":"b1b3 a4a1 b3b1 a1b1 d2d1 b1d1","r":509,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"QPpM7","f":"3r1r1k/5pb1/2p3pp/4P3/3q1Q2/P2B4/5PPP/R2R2K1 w - - 0 30","m":"d3e4 d4d1 a1d1 d8d1","r":504,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QPv2R","f":"4rr1k/ppN3pp/3p4/2q5/4b3/8/P4QPP/3R1RK1 b - - 8 27","m":"c5c7 f2f8 e8f8 f1f8","r":502,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QSt3k","f":"2r2rk1/p2R1ppp/4p3/B3N3/n2P4/4P3/5PPP/R5K1 w - - 1 21","m":"a1a4 c8c1 a5e1 c1e1","r":403,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QUD7V","f":"3r3k/4bp1p/p7/1pnrP3/3N2R1/8/PP3PPB/2R3K1 w - - 3 27","m":"d4f5 d5d1 c1d1 d8d1","r":555,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QXr3T","f":"4r1k1/ppp2ppp/8/8/1PP1n3/Q4B1P/P4qPK/4R3 b - - 1 24","m":"e4g3 e1e8","r":596,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"Qa8Zt","f":"3r3k/p3Q1p1/5q1p/1p6/8/8/PPP3PP/5R1K w - - 3 29","m":"f1f6 d8d1 e7e1 d1e1 f6f1 e1f1","r":431,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"QbJRH","f":"2k1r3/ppp2pp1/4r3/5b1p/2Pp4/1P1P4/P3BPPP/R3R1K1 w - - 3 18","m":"e2h5 e6e1 a1e1 e8e1","r":452,"t":"backRankMate endgame mate mateIn2 short"},{"i":"QeHOl","f":"r4rk1/pppb2p1/2nb3p/1B2p3/Q3R3/2P5/PP4PP/R1B2q1K w - - 2 16","m":"b5f1 f8f1","r":446,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"QiKnF","f":"3r2k1/pp3p1p/2p3p1/3r4/1P6/2b1P3/4NPPP/1qQ2K1R w - - 0 21","m":"c1b1 d5d1 b1d1 d8d1","r":577,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"QjyAK","f":"6k1/p1q2ppp/1p1r4/8/b3Q3/7P/5PP1/4R1K1 b - - 0 32","m":"a4c6 e4e8 c6e8 e1e8","r":596,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"QkoX4","f":"1k2r3/ppp2Qp1/5n1p/4r3/4N3/3P1B2/PPP2qPP/R6K w - - 11 23","m":"e4f2 e5e1 a1e1 e8e1","r":470,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"QmJaS","f":"8/p5kp/3Q2p1/8/8/8/PP3qPP/R3r2K w - - 1 25","m":"a1e1 f2e1","r":560,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"Qn5Qa","f":"7k/6p1/7p/1P6/p3q3/P7/3r2PP/4R2K w - - 0 43","m":"e1e4 d2d1 e4e1 d1e1","r":432,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Qp2AO","f":"k2r4/1p3p2/p1p4Q/6n1/P7/1P4P1/2P1PPB1/5K2 w - - 0 31","m":"h6g5 d8d1","r":405,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"R1Ge8","f":"5Q1k/pp4pp/2p5/8/2PP4/q7/P5PP/5R1K b - - 0 36","m":"a3f8 f1f8","r":454,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"R34nP","f":"3r2k1/p4pp1/1p5p/8/8/1P1r1N2/Pq3PPP/2QR2K1 w - - 2 23","m":"c1b2 d3d1 f3e1 d1e1","r":418,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"R4fcB","f":"3r4/pp3kp1/4p2p/4n3/8/P7/1P3PPP/4R1K1 w - - 0 21","m":"e1e5 d8d1 e5e1 d1e1","r":408,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"R76wd","f":"Q3r2k/p2n1p2/5p1p/8/1p1P3B/6R1/PP2qPPP/R5K1 w - - 3 33","m":"a8a7 e2e1 a1e1 e8e1","r":534,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"R8S60","f":"rn1r1Q1k/p5pp/3P4/p3P3/8/8/P5PP/1R3R1K b - - 2 29","m":"d8f8 f1f8","r":583,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"R9nsY","f":"r3R2k/pp3Qpp/8/2pp4/3q4/7P/PP4P1/7K b - - 1 24","m":"a8e8 f7e8","r":590,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"RAM0H","f":"2R2nk1/7p/3qr1p1/1p6/4QP2/1B6/rP4PP/7K w - - 0 30","m":"b3a2 d6d1 e4e1 d1e1","r":454,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RAv7W","f":"r2rQ1k1/p4ppp/1p6/2p4q/P1P5/1P2RpP1/2P2P1P/4R1K1 b - - 6 24","m":"d8e8 e3e8 a8e8 e1e8","r":458,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"RAxZm","f":"6k1/2R2pbp/2p2pp1/3p4/1P1P4/2P2N2/1r3PPP/6K1 w - - 0 22","m":"c7c6 b2b1 f3e1 b1e1","r":549,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RBXFS","f":"4r1k1/pp3p2/2p3p1/4r2n/8/2P5/PP3QR1/K3q2R w - - 10 35","m":"h1e1 e5e1 f2e1 e8e1","r":409,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RBrnt","f":"3rQ1k1/5ppp/2p5/3b4/8/P1P2qP1/2P2P1P/1R2R1K1 b - - 2 28","m":"d8e8 e1e8","r":497,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"RBzQV","f":"5r1k/ppq2Qpp/3R4/2P5/PP4n1/4p3/3R1PPP/6K1 b - - 0 31","m":"f8f7 d6d8 c7d8 d2d8 f7f8 d8f8","r":518,"t":"backRankMate endgame long mate mateIn3"},{"i":"RCys0","f":"3R3k/6pp/p3n3/1p6/6q1/4B1P1/PPP3K1/5R2 b - - 2 29","m":"e6d8 f1f8","r":439,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"REVNS","f":"rb4k1/pp3ppp/3q4/3p4/3P1B2/1PN3Pb/1P2QP2/4R1K1 b - - 1 27","m":"d6d8 e2e8 d8e8 e1e8","r":599,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"RGTdL","f":"r1b3k1/ppp2ppp/7q/4R3/2P3n1/6PP/PP4B1/R2Q2K1 b - - 2 19","m":"g4e5 d1d8","r":452,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"RSPJJ","f":"4r2k/pp3Q1p/6p1/3N4/8/8/PP3RPP/7K w - - 3 29","m":"d5f6 e8e1 f2f1 e1f1","r":455,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RTkSA","f":"1r1R1k2/p3ppbp/6p1/4P3/2p2P2/4nNP1/PPP4P/2KR4 b - - 3 28","m":"b8d8 d1d8","r":454,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"RVZCy","f":"3r3r/1k5p/p4p2/1p1q4/4N3/1PPB3Q/P4PPP/3R2K1 w - - 2 28","m":"d3c2 d5d1 c2d1 d8d1","r":426,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"RXG4z","f":"4r1k1/ppB2pp1/2npq2p/3N4/5Q2/8/PPP2PPP/R5K1 w - - 3 20","m":"f4d6 e6e1 a1e1 e8e1","r":599,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"RYp28","f":"4r1k1/p3rpp1/1p1p3p/n1pP4/2P3Q1/P1B5/2B2nPP/5R1K w - - 1 30","m":"f1f2 e7e1 c3e1 e8e1 f2f1 e1f1","r":504,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"RaIUk","f":"5rk1/1R3p1p/rpn1p1p1/4P3/3P4/8/1P3PPP/2R3K1 w - - 3 21","m":"c1c6 a6a1 c6c1 a1c1","r":540,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"RaMYz","f":"4r1k1/p4ppp/1p1R4/1N2Q3/8/6P1/P3PPKP/2q5 b - - 0 25","m":"e8e5 d6d8 e5e8 d8e8","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Rixbz","f":"8/2k3pB/5p2/4p3/1P6/1r6/5PPP/4N1K1 w - - 1 36","m":"e1c2 b3b1 c2e1 b1e1","r":529,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RjGLI","f":"r2r2k1/6pp/4R3/p1B5/P7/1pb5/5PPP/2R3K1 w - - 0 28","m":"c1c3 d8d1 e6e1 d1e1","r":424,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RjuId","f":"1r4k1/pp3ppp/4p3/2R5/8/2R2PP1/PP1r3P/4K3 b - - 4 31","m":"d2b2 c5c8 b8c8 c3c8","r":495,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Rq53V","f":"2q3k1/5ppp/3p4/1R6/2Q1P3/7P/5PP1/6K1 b - - 0 27","m":"c8c4 b5b8 c4c8 b8c8","r":533,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"RqfHM","f":"4r1k1/5ppp/2p5/Rb2P3/2r5/4PNK1/P5PP/8 b - - 0 22","m":"e8e6 a5a8 e6e8 a8e8","r":421,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RrveH","f":"2r3k1/p1R2ppp/4p3/8/5P2/2PR4/P5PP/6K1 b - - 0 27","m":"c8c7 d3d8","r":403,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"Ry2wL","f":"2r3k1/2pQ1ppp/p1p2b2/1p2p3/2q1P1P1/P1N5/1PP2P1P/3R2K1 b - - 0 18","m":"c8d8 d7d8 f6d8 d1d8","r":572,"t":"backRankMate endgame mate mateIn2 short"},{"i":"RyId2","f":"4Q2k/ppq3pp/2p3b1/8/8/1B6/PP3RPP/7K b - - 0 28","m":"g6e8 f2f8","r":414,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"S09dR","f":"R7/5kpp/2P5/1r6/2r5/5B2/5PPP/2R3K1 w - - 4 30","m":"c1c4 b5b1 c4c1 b1c1 f3d1 c1d1","r":448,"t":"backRankMate endgame long mate mateIn3"},{"i":"S4rjw","f":"5rk1/b6p/p2p1qpQ/1p2pP2/1Pp1P3/P2p4/2P3PP/R4R1K w - - 0 30","m":"f5g6 f6f1 a1f1 f8f1","r":451,"t":"backRankMate endgame mate mateIn2 short"},{"i":"S9WIj","f":"5Q1k/6pp/4n3/8/1P6/6P1/P1r1q1BP/5R1K b - - 2 32","m":"e6f8 f1f8","r":407,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SAs45","f":"3r1k2/p4p2/2pr1Np1/2pB2Pp/4P2P/8/PPP5/1K3R2 w - - 0 29","m":"d5c4 d6d1 f1d1 d8d1","r":415,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SBmh2","f":"3r4/1k6/1p1r1ppp/2R1p3/2P5/8/P4PPP/1R4K1 w - - 0 28","m":"c5b5 d6d1 b1d1 d8d1","r":546,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SCeOF","f":"6k1/5ppp/3p1n2/1P1Pp3/8/5N2/2R2PPP/r5K1 w - - 1 25","m":"f3e1 a1e1","r":474,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"SHMbA","f":"6k1/p3r1p1/1n1R4/3p2p1/8/r7/5PPP/4R1K1 w - - 0 28","m":"e1e7 a3a1 e7e1 a1e1","r":521,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SIt0D","f":"3r2k1/5ppp/p3b3/1p6/3r4/1P3B2/P4PPP/R2R2K1 w - - 2 22","m":"f3b7 d4d1 a1d1 d8d1","r":516,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SNWIV","f":"2r3k1/q4ppp/p7/1p2b3/1P2N3/P2RP2P/1BQ2PP1/6K1 b - - 0 24","m":"c8c2 d3d8","r":519,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SRjpb","f":"4r3/3R3p/1pN3k1/pn6/8/8/5PPP/6K1 w - - 2 36","m":"d7b7 e8e1","r":479,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SSduN","f":"r5k1/5ppp/1R6/4r3/1K6/1R6/P7/8 b - - 7 44","m":"a8a2 b6b8 e5e8 b8e8","r":425,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SVHrb","f":"3q2k1/5ppp/4p3/Q2n4/1B2N3/1P3P2/P3r1PP/6K1 b - - 0 29","m":"d5b4 a5d8","r":480,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"SVLz1","f":"6k1/R2p1ppp/p3p3/1p2Pn2/1P6/P5P1/5BKP/2r5 b - - 2 30","m":"c1c2 a7a8 c2c8 a8c8","r":436,"t":"backRankMate endgame mate mateIn2 short"},{"i":"SXvye","f":"3r2k1/p1p4p/1p3qp1/3r2P1/8/5P2/PPP2Q2/1K5R w - - 0 29","m":"g5f6 d5d1 h1d1 d8d1","r":550,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Sa99R","f":"r5k1/1B4p1/pp2pr1p/7Q/8/8/P5PP/3R1q1K w - - 2 29","m":"d1f1 f6f1","r":416,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SdEb0","f":"r5k1/6pp/2p2rb1/p1PpRpn1/Pp1P4/1N1B1PqP/1PQ3P1/3KR3 b - - 10 29","m":"g5f7 e5e8 a8e8 e1e8","r":400,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"SdcY7","f":"6k1/1p3pp1/1n2p2p/4P3/r2P4/2P5/5PPP/1R4K1 w - - 0 24","m":"b1b6 a4a1 b6b1 a1b1","r":458,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"SetoJ","f":"1r4k1/5ppp/4p3/p7/8/1R5P/PPR3P1/1K2n3 b - - 3 27","m":"b8b3 c2c8","r":543,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"SfWwM","f":"1r2r1k1/2q1bppp/p2p4/1p6/3N1p2/8/PPP1Q1PP/1K1RR3 b - - 3 22","m":"e7f6 e2e8 b8e8 e1e8","r":539,"t":"backRankMate master masterVsMaster mate mateIn2 middlegame short"},{"i":"SgaFG","f":"2r3k1/R4ppp/2R1p3/3p4/5P2/6P1/4r2P/6K1 b - - 4 32","m":"c8c6 a7a8 c6c8 a8c8","r":425,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Spvqv","f":"3k3r/2Rnp1bp/5pp1/2pPp3/b1P1P1Q1/4B3/1r3PPP/R5K1 w - - 0 25","m":"a1a4 b2b1 e3c1 b1c1 g4d1 c1d1","r":430,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"StnJT","f":"6k1/R4ppp/8/2r5/1r4n1/8/2bK2PP/2R5 b - - 7 32","m":"g4h2 a7a8 b4b8 a8b8 c5c8 b8c8","r":490,"t":"backRankMate endgame long mate mateIn3"},{"i":"Sumqr","f":"2Q3kr/p3nppp/4p3/1B2qnP1/8/B7/2P4P/3R1R1K b - - 0 26","m":"e7c8 d1d8","r":541,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"SvniF","f":"6k1/5ppp/2r5/4P3/2P2P2/4P3/pR2K1PP/8 b - - 0 39","m":"a2a1q b2b8 c6c8 b8c8","r":414,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"T3MAo","f":"6k1/1p4p1/p3p3/4P2p/1P1r4/P3b3/6PP/4R2K w - - 0 27","m":"e1e3 d4d1 e3e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"T4Zak","f":"5rk1/4q3/pp1p3p/2pP1NpB/QPP5/P7/6PP/2R1r2K w - - 1 29","m":"c1e1 e7e1","r":423,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"T5X9l","f":"8/rk3p1p/2p1p1p1/5b2/3B4/2R1P3/5PPP/R5K1 w - - 2 37","m":"d4c5 a7a1 c3c1 a1c1","r":463,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"TCiLU","f":"r4rk1/p2b2pp/1b3q2/1p1pp3/1P1N1P2/2B5/P2Q2PP/R4R1K w - - 0 26","m":"f4e5 f6f1 a1f1 f8f1","r":542,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TIcQl","f":"4r2k/pp3Rpp/8/4Q3/8/7P/6PK/8 b - - 0 34","m":"e8e5 f7f8","r":452,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"TLdkT","f":"r1b3k1/4Rppp/8/2p5/1p6/3P4/1P3PPP/2R3K1 w - - 0 25","m":"c1c5 a8a1 c5c1 a1c1 e7e1 c1e1","r":520,"t":"backRankMate endgame long mate mateIn3"},{"i":"TOv4D","f":"6k1/5ppp/3p4/2p5/2P5/1r5P/R5P1/7K b - - 0 39","m":"b3b4 a2a8 b4b8 a8b8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"TPSnB","f":"r5k1/5ppp/p7/1pBq4/8/8/PbP1QPP1/4RK2 b - - 1 24","m":"g8h8 e2e8 a8e8 e1e8","r":438,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"TRemu","f":"2r3k1/5ppp/2r1p3/3pP3/2b1NP2/6P1/PPPR3P/2KR4 b - - 0 22","m":"d5e4 d2d8 c8d8 d1d8","r":431,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TS1Cs","f":"1r4k1/4bppp/3p4/Q1pP4/3pP3/P2P2B1/5PPP/Rq4K1 w - - 1 26","m":"a1b1 b8b1 a5e1 b1e1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TeOrl","f":"6k1/1p3pp1/3p3p/2p1r3/R7/2P5/PP1r1PPP/4R1K1 w - - 0 26","m":"e1e5 d2d1 e5e1 d1e1","r":521,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"TesNr","f":"3rr1k1/5p1p/1R2p1pB/p7/B1b5/2P5/5PPP/6K1 w - - 1 29","m":"a4e8 d8d1","r":528,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Tf3UY","f":"6k1/2p2p1p/3p1P2/p2Pr2p/Np6/8/PP6/K1R5 w - - 1 38","m":"c1c7 e5e1 c7c1 e1c1","r":456,"t":"backRankMate endgame mate mateIn2 short"},{"i":"TflYx","f":"5r2/p5kp/4prp1/2Np4/1p1n4/2PP3Q/PP4PP/2R1q2K w - - 0 22","m":"c1e1 f6f1 e1f1 f8f1","r":566,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Tj9s7","f":"k2R3r/pp2Q1p1/8/2p4q/6p1/6P1/PPP2P2/4R1K1 b - - 6 28","m":"h8d8 e7d8","r":540,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"TkHZm","f":"r1b3k1/p4ppp/2p1p3/8/2B5/1P6/PbPrNPPP/3RR1K1 b - - 5 18","m":"d2c2 d1d8","r":549,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"TktzW","f":"6k1/5pp1/4p2p/3p4/1RrP4/r1P5/2R2PPP/6K1 w - - 0 31","m":"b4c4 a3a1 c2c1 a1c1","r":439,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"TmSc7","f":"6k1/1p3pp1/p2p3p/2r1p3/P3P3/1Q6/3R1PPP/6K1 w - - 0 27","m":"b3b7 c5c1 d2d1 c1d1","r":451,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Tn1Kj","f":"1k3r1r/ppp5/3p2q1/4n2p/4QR2/P1P1P1P1/1P4NP/5RK1 b - - 2 23","m":"g6e4 f4f8 h8f8 f1f8","r":581,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"TnAZn","f":"r4rk1/p1p2ppp/2p2q2/5b2/2PP4/3BQ3/Pb1B1PPP/4R1K1 b - - 1 16","m":"f8e8 e3e8 a8e8 e1e8","r":502,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Tpi90","f":"2r3k1/5pp1/pp2p2p/3pP3/8/P3P3/1P3PPP/3R2K1 w - - 0 24","m":"d1d2 c8c1 d2d1 c1d1","r":438,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Tq5MJ","f":"2r3k1/p4pp1/4p2p/3p4/8/1q6/6PP/3Q3K w - - 0 29","m":"d1b3 c8c1 b3d1 c1d1","r":403,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"TsSVQ","f":"r1b2r2/ppk4p/2pb4/4n1p1/4PB2/1B6/PPP3PP/RN3R1K w - - 0 16","m":"f4g3 f8f1","r":499,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"TxGk3","f":"r4rk1/ppp1R1pp/2p5/6N1/3b4/1P6/1P4PP/RbB4K w - - 0 18","m":"a1b1 f8f1","r":479,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"TyrSv","f":"5rk1/p4ppp/1p6/4P3/6Q1/2q2P2/P5PP/4R2K w - - 0 29","m":"e5e6 c3e1","r":430,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"U5DPZ","f":"RR3rk1/5ppp/2B1p3/8/8/7P/2Pn1PP1/6K1 b - - 4 29","m":"f8b8 a8b8","r":484,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"U7MIq","f":"3r1r2/Qp2qkp1/8/4p2p/4n3/2P5/PP3PPP/R1B1R1K1 w - - 1 19","m":"e1e4 d8d1 e4e1 d1e1","r":485,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"U8PO1","f":"3r1r2/pq2N1kp/5pp1/2p5/8/8/4RPPP/1R4K1 w - - 0 28","m":"b1b7 d8d1 e2e1 d1e1","r":490,"t":"backRankMate endgame mate mateIn2 short"},{"i":"U8RXp","f":"r1b3kr/p2p1ppp/1pqB1n2/n3Q3/8/5N2/P4PPP/3RR1K1 b - - 7 20","m":"a5c4 e5e8 f6e8 e1e8","r":427,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"UB9OT","f":"2r5/p3kn1p/5p2/3rp1p1/8/4P1B1/P4PPP/3R2K1 w - - 0 27","m":"d1d5 c8c1 d5d1 c1d1","r":403,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UFekz","f":"6k1/8/4q1p1/3p4/7p/P4P2/2r3PP/4R2K w - - 0 38","m":"e1e6 c2c1 e6e1 c1e1","r":471,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"UGgGt","f":"3r2k1/1p6/2p4p/p3BB2/2P5/1Pb5/P4PPP/6K1 w - - 0 28","m":"e5c3 d8d1 c3e1 d1e1","r":429,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UQc1q","f":"r5k1/pp3ppp/n7/3P4/2Q1N3/q2PBbP1/Pr3P1n/2R1K1R1 b - - 3 20","m":"a6b4 c4c8 a8c8 c1c8","r":528,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"USh5X","f":"2r3k1/pp3p1p/6p1/3R4/8/5P2/PP4PP/7K w - - 1 23","m":"d5d2 c8c1 d2d1 c1d1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"UVX0o","f":"1r4k1/5ppp/2B5/R3p1b1/8/p7/1P3PPP/6K1 w - - 0 25","m":"b2a3 b8b1","r":476,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"UaE9z","f":"r1r5/pp4k1/5p2/3N2p1/3P4/7q/PP6/K6Q w - - 0 42","m":"h1h3 c8c1","r":418,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"UbdjK","f":"2kr3r/p1p3pp/b1p5/4b3/8/2P5/PP3PPP/RN2R1K1 w - - 0 17","m":"e1e5 d8d1 e5e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UdwVX","f":"3q2k1/5pp1/7p/8/P5P1/1P3Q2/6PP/7K w - - 0 48","m":"f3c6 d8d1","r":520,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"UiH8A","f":"3r2k1/2p3pp/2n5/pp2p3/7P/2P1QPBq/PP6/K6R w - - 1 24","m":"h1h3 d8d1 e3c1 d1c1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"UkPH8","f":"5rk1/pq3ppp/4p3/3p4/3P4/P1Q1P3/5PPP/2R3K1 b - - 1 24","m":"f8c8 c3c8 b7c8 c1c8","r":472,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Unxp8","f":"2r3k1/5ppb/p1q4p/4p2P/1P1pP3/1R3P2/PP2rP2/K3Q2R w - - 0 36","m":"e1e2 c6c1 h1c1 c8c1","r":526,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"UoSiz","f":"5rk1/6pp/p7/1p1q4/7P/1P4P1/PP6/K2R4 w - - 0 30","m":"d1d5 f8f1 d5d1 f1d1","r":435,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Uqa5U","f":"Q5k1/1q3ppp/3p4/3Pb3/8/4P3/R5PP/6K1 b - - 0 32","m":"b7a8 a2a8","r":424,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"UxeZM","f":"5r1k/6p1/p6p/1p6/4Q3/8/PP4PP/R4q1K w - - 1 30","m":"a1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"UzZ0f","f":"8/4rk1r/8/1Q6/p4p2/5P2/PPP5/1K2q1R1 w - - 1 41","m":"g1e1 e7e1","r":491,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"V0120","f":"1r4k1/5ppp/3pp3/R7/3P4/4P3/1r3PPP/5RK1 w - - 0 31","m":"f1a1 b2b1 a1b1 b8b1","r":415,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"V2fKy","f":"5r1k/2p3pp/1pN5/4P3/1Pp5/2Q5/2Pp2PP/3R1q1K w - - 6 32","m":"d1f1 f8f1","r":461,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"V4YuX","f":"Q3r2k/6pp/pq6/1p6/5R2/4P3/PP1B2PP/5RK1 b - - 0 25","m":"e8a8 f4f8 a8f8 f1f8","r":523,"t":"backRankMate endgame mate mateIn2 short"},{"i":"V5EeQ","f":"6k1/5ppp/R1p5/2N5/8/2P4P/1r1r1PP1/6K1 b - - 0 26","m":"d2f2 a6a8 b2b8 a8b8","r":503,"t":"backRankMate endgame mate mateIn2 short"},{"i":"V6MYv","f":"2r1r1k1/p1p2ppp/1p3b2/8/1P2R3/P5BP/2P2PP1/4R1K1 b - - 0 22","m":"c7c5 e4e8 c8e8 e1e8","r":519,"t":"backRankMate endgame mate mateIn2 short"},{"i":"V6SPZ","f":"3r2k1/2r2pp1/1pQ2n1p/p3N3/8/4P2P/P4PPB/6K1 w - - 0 32","m":"c6c7 d8d1","r":442,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"VAvJ6","f":"8/1p2kr2/pb2n3/6p1/4Q3/2P5/PP4PP/6K1 w - - 3 35","m":"g1h1 f7f1","r":503,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"VCVbd","f":"6k1/p4ppp/1pnrp3/8/8/4B3/PP3PPP/2R3K1 b - - 1 28","m":"c6b4 c1c8 d6d8 c8d8","r":488,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VEqcK","f":"2kr4/pp3ppp/5b2/2p5/4r3/P7/1P3PPP/1RB1R1K1 w - - 0 20","m":"e1e4 d8d1 e4e1 d1e1","r":442,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VHksT","f":"1r4k1/5ppp/8/rRNp4/3P3q/4QP2/6PP/4R1K1 b - - 0 33","m":"a5b5 e3e8 b8e8 e1e8","r":473,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"VMeWY","f":"r5k1/ppb2ppp/2p2qn1/8/3P4/2P2N1P/PP2QPP1/4R1K1 b - - 0 21","m":"g6f4 e2e8 a8e8 e1e8","r":492,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"VOAEt","f":"2r2k2/1p1qN1pp/p3Q3/6N1/8/6P1/PP4PP/7K w - - 0 27","m":"e6d7 c8c1 d7d1 c1d1","r":427,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VRnYJ","f":"r4r1k/pp3ppp/3pB3/2p5/4P2q/2PP1Q2/PP3RP1/R5K1 b - - 0 24","m":"f7e6 f3f8 a8f8 f2f8","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VTGqn","f":"8/3nr1k1/b1p1q1p1/1p2Np2/p4Q2/2P5/P4PPP/3BR1K1 w - - 1 29","m":"e5f3 e6e1 f3e1 e7e1","r":596,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"VTcKR","f":"6k1/p1p2p1p/1p4p1/1b1P4/8/1B4R1/PP4PP/2q1r1QK w - - 5 28","m":"g1e1 c1e1","r":456,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"VTf4M","f":"3r2k1/pp2Qpp1/7p/5p2/2N5/1P6/P4PPP/2Rq2K1 w - - 1 24","m":"c1d1 d8d1 e7e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VTloI","f":"1b1r2k1/p3Rppp/4b3/1P6/P7/2pP4/5PPP/2B2K2 b - - 0 34","m":"d8d3 e7e8","r":456,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"VYwwP","f":"2rr2k1/qb1RNppp/p5n1/1p2p3/4P3/P3P1PP/3QN1B1/3R2K1 b - - 2 25","m":"g6e7 d7d8 c8d8 d2d8","r":543,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Vcmm2","f":"6k1/ppr2pp1/5p1p/3P4/8/8/PP2qPPP/3Q3K w - - 0 24","m":"d1e2 c7c1 e2d1 c1d1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Vf2SZ","f":"1k1r4/2p2p1p/1p1r3p/8/4P2N/R1P5/5PPP/1R4K1 w - - 3 32","m":"b1a1 d6d1 a1d1 d8d1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VgpSd","f":"2r3k1/3R1ppp/4p3/p3P3/P4P2/8/1Pr3PP/1K1R4 b - - 1 25","m":"c2g2 d7d8 c8d8 d1d8","r":439,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Vif24","f":"1r4k1/R4ppp/8/1P3p2/8/4P2P/5PPK/8 b - - 0 32","m":"b8b5 a7a8 b5b8 a8b8","r":443,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"VizTW","f":"4r1k1/pp2qppp/8/2pn4/6Q1/2PP2N1/PP3PPP/R5K1 w - - 4 23","m":"g3f5 e7e1 a1e1 e8e1","r":485,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"Vjtql","f":"4r1k1/p2R1ppb/7p/1p5P/1Pn3B1/4P1B1/6P1/6K1 b - - 0 31","m":"e8e3 d7d8 e3e8 d8e8","r":421,"t":"backRankMate endgame mate mateIn2 short"},{"i":"VrbqS","f":"4rnk1/pp2q2p/2p2pp1/8/3P4/P1PQ1b2/5PPP/1BR3K1 w - - 0 25","m":"d3f3 e7e1 c1e1 e8e1","r":532,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"VwWmz","f":"3r1rk1/p3n1pp/1pp2p2/8/4BB2/P3P3/b1P2PPP/1R1R2K1 w - - 0 16","m":"b1b2 d8d1","r":447,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"W7Uve","f":"2krr3/1pp1q2p/pn4p1/3P1b2/4N3/1B3Q2/PP3PPP/3RR1K1 w - - 1 21","m":"e4c3 e7e1 d1e1 e8e1","r":598,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"W9WRY","f":"2rR2k1/5ppp/1Q6/4n3/4P3/BP3PqP/P5P1/7K b - - 2 27","m":"c8d8 b6d8","r":458,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"WABKC","f":"2b4k/4q1pp/p2bp3/1p2Np2/1P2n3/P3P3/1BQ1BPPP/6K1 b - - 3 22","m":"d6e5 c2c8 e7d8 c8d8","r":517,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"WBdO9","f":"3rQ1k1/p4ppp/1r3q2/2p5/1b6/1PN2NP1/P2P3P/B2KR3 b - - 1 25","m":"d8e8 e1e8","r":468,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"WCdU1","f":"6k1/4rppp/p4b2/5b2/1P1p4/P2N1BP1/3B1K1P/2R5 b - - 5 32","m":"f5d3 c1c8 e7e8 c8e8","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WDaSc","f":"3r4/1k4p1/3r3p/P1p5/3N4/4B3/1PP2PPP/R5K1 w - - 0 28","m":"d4b5 d6d1 a1d1 d8d1","r":416,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WFzT0","f":"3Q1nk1/5p1p/6p1/8/4P3/1r6/5PPP/2R3K1 w - - 0 30","m":"c1c8 b3b1 c8c1 b1c1 d8d1 c1d1","r":567,"t":"backRankMate endgame long mate mateIn3"},{"i":"WIDT6","f":"8/1b5k/1p1R2pp/p1n1p3/P1P5/1P2qP2/2Q3PP/1B4K1 w - - 1 35","m":"g1h1 e3e1","r":536,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"WIRwB","f":"4r1k1/pp4pp/2p2p2/1P1p4/P7/3R4/5PPP/3Rr1K1 w - - 1 26","m":"d1e1 e8e1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"WKgbp","f":"1k6/ppp5/5R2/4pB1p/5bpN/P7/1PPr4/5K2 b - - 2 31","m":"f4g3 f6f8 d2d8 f8d8","r":480,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WPRO6","f":"7r/pkp5/5P2/3np1p1/1p2P3/8/PP3P2/K2R4 w - - 0 28","m":"d1d5 h8h1 d5d1 h1d1","r":578,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"WS7qy","f":"3r2k1/1p3p1p/p5p1/3r4/8/1R6/P4PPP/q3Q1K1 w - - 0 24","m":"e1a1 d5d1 a1d1 d8d1","r":479,"t":"backRankMate endgame fork mate mateIn2 queenRookEndgame short"},{"i":"WTVix","f":"2r1k3/1p1n1pQN/p1r1p2p/4P3/5P2/1P6/P5PP/q3R2K w - - 0 26","m":"e1a1 c6c1 a1c1 c8c1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WVIZ7","f":"2kr3r/ppp5/2p3p1/2b2p1p/4bP2/2P4B/PP4PP/R1B1R2K w - - 0 17","m":"e1e4 d8d1 e4e1 d1e1","r":515,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"WVsF4","f":"8/p4pkp/8/8/1N6/8/Pr3PPP/3R2K1 w - - 2 27","m":"d1d4 b2b1 d4d1 b1d1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"WWOzn","f":"3r1rk1/p5pp/1p3p2/2n1p3/PQ6/4P2P/q4PPB/R2R2K1 w - - 1 26","m":"a1a2 d8d1 b4e1 d1e1","r":462,"t":"backRankMate hangingPiece mate mateIn2 middlegame short"},{"i":"WZSVK","f":"5Q1k/6pp/6n1/2p1p3/2R1P3/5R1P/q4PP1/1r3BK1 b - - 0 39","m":"g6f8 f3f8","r":492,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"WbiNm","f":"4r1k1/p1p2ppp/1bN5/8/8/2P2PK1/PP5P/3R4 b - - 2 23","m":"e8e2 d1d8 e2e8 d8e8","r":492,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Wcjm7","f":"2kr2r1/R4p2/6p1/2p1p2p/1pP1P3/8/1P4PP/5R1K w - - 1 33","m":"f1f7 d8d1 f7f1 d1f1","r":466,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"WeJNz","f":"3r2k1/2p2pp1/5n1p/8/P7/b6N/5PPP/1Q1q2K1 w - - 0 30","m":"b1d1 d8d1","r":454,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"WgvyW","f":"r3r3/pp3knQ/1q1p2p1/3N4/8/3p4/PP4PP/1RB4K w - - 2 25","m":"d5b6 e8e1","r":486,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"WiAnt","f":"3rr1k1/p3Rppp/2p5/5p2/8/PPpP4/2P3PP/4R1K1 b - - 3 23","m":"a7a5 e7e8 d8e8 e1e8","r":516,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"WrSOH","f":"4r1k1/1p2rpp1/p6p/8/3P4/8/P2R1PPP/3R2K1 w - - 3 21","m":"d4d5 e7e1 d1e1 e8e1","r":462,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"X0Fyi","f":"8/5Rpp/1pk5/8/P7/1P6/1r3PPP/4R1K1 w - - 1 28","m":"e1e3 b2b1 e3e1 b1e1","r":408,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"X1wje","f":"3r2k1/1q3ppp/p3pb2/1p1n4/1Pr1P3/R1P3B1/2Q2PPP/1N1R2K1 b - - 0 20","m":"d5e7 d1d8","r":557,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"X2Jvb","f":"3r1k2/1p4b1/6p1/1P3p2/1P2p3/1n2R3/3N1PPP/6K1 w - - 0 29","m":"d2b3 d8d1 e3e1 d1e1","r":422,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"X3Qm7","f":"6k1/5ppp/p3p3/5qPP/1p3P2/5Q2/PPR5/K7 b - - 0 29","m":"f5c2 f3a8 c2c8 a8c8","r":449,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"X4bOU","f":"2r3k1/p3qpbp/1p2pnp1/6N1/3P4/BB2P2Q/P4PPP/6K1 w - - 4 23","m":"a3e7 c8c1 b3d1 c1d1","r":404,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"X6XyA","f":"r2qr1k1/1p3ppb/p1p2B1p/3pQ3/8/2NP4/PPP2PPP/4RBK1 b - - 0 20","m":"d8f6 e5e8 a8e8 e1e8","r":550,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"X89s2","f":"6k1/p7/1rp5/4r1p1/5p2/P1n5/P4PPB/4R1K1 w - - 0 32","m":"e1e5 b6b1 e5e1 b1e1","r":516,"t":"backRankMate endgame mate mateIn2 short"},{"i":"X8Izp","f":"4r1k1/3br1p1/2p4p/1pQp1p2/PP6/5B2/5PPP/q1R3K1 w - - 0 25","m":"c1a1 e7e1 a1e1 e8e1","r":509,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XAWZj","f":"6k1/pp3pp1/2p4p/5Pb1/2B1Q3/q1N5/P1P3PP/7K w - - 3 30","m":"c4b3 a3c1 c3d1 c1d1 e4e1 d1e1","r":490,"t":"backRankMate endgame long mate mateIn3"},{"i":"XApN0","f":"4r3/6kr/b1P1qn1p/pN1R2p1/5p2/8/1QB2PPP/1R4K1 w - - 1 46","m":"b5c7 e6e1 b1e1 e8e1","r":569,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"XHKzQ","f":"4r1k1/5ppp/8/p1p5/1qP3P1/3P1K1P/4RPB1/4R3 b - - 8 36","m":"e8d8 e2e8 d8e8 e1e8","r":449,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XI1mV","f":"5rk1/6bp/p5p1/1p2p3/4Q3/3B4/PP4PP/5q1K w - - 0 24","m":"d3f1 f8f1","r":485,"t":"backRankMate endgame master masterVsMaster mate mateIn1 oneMove"},{"i":"XLAaT","f":"3r3k/pppr2pp/5p2/8/8/P3R2P/1PP3P1/4R2K b - - 4 22","m":"d7d2 e3e8 d8e8 e1e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XTbgS","f":"r1b2r1k/1p4pp/2pp4/p3pp2/P3P3/2PPP3/BP4PP/R3KR2 b Q - 1 17","m":"f5e4 f1f8","r":408,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"XV3DS","f":"r1bq2k1/ppp2ppp/8/3p4/1B2QPn1/7P/PPP3P1/2KR1BNR b - - 0 13","m":"d5e4 d1d8","r":498,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"XVUx4","f":"3r1Q1k/6pp/1p6/p1p3q1/2B5/6P1/PPP5/1K3R2 b - - 1 23","m":"d8f8 f1f8","r":447,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"XWG96","f":"r1b1r1k1/1p3ppp/p1p5/6P1/4Q2P/4B3/PPP5/2KR3R b - - 0 19","m":"e8e4 d1d8 e4e8 d8e8","r":450,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XgCpY","f":"2rr2k1/p2q2p1/1p2pn2/2P2p1Q/2R5/P3P3/1P3PPP/1BR3K1 w - - 1 26","m":"h5g6 d7d1 c1d1 d8d1","r":493,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"XkL4H","f":"4r1k1/4Rppp/2R1p3/8/8/4B1P1/5PKP/r7 b - - 2 29","m":"e8e7 c6c8 e7e8 c8e8","r":464,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XkkIA","f":"4rQ1k/p3b1pp/2p1B3/8/P2q4/5RPK/8/5R2 b - - 1 36","m":"e7f8 f3f8 e8f8 f1f8","r":440,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Xm36i","f":"3r2k1/5p1p/2Q1p1p1/8/3r4/2P5/5PPP/1q2R1K1 w - - 0 29","m":"e1b1 d4d1 b1d1 d8d1","r":547,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Xo4Cd","f":"2r3k1/4Rppp/p7/1p3P2/8/P7/1P4PP/R1q4K w - - 0 26","m":"a1c1 c8c1 e7e1 c1e1","r":401,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"XoBsm","f":"2r3k1/p4ppb/1p3n1p/4p3/2P3PP/1B4K1/P7/3R4 b - - 0 32","m":"c8c7 d1d8 f6e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Xowdx","f":"3r2k1/1p1r1p1p/p4ppb/8/2N5/1P3Q2/P4PPP/3q1RK1 w - - 0 28","m":"f1d1 d7d1 f3d1 d8d1","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Xp6on","f":"3r2k1/2Rrppbp/p3b1p1/1N4N1/8/1P6/1PP2PPP/R5K1 w - - 1 20","m":"g5e6 d7d1 a1d1 d8d1","r":479,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Xt0q1","f":"rn2r1k1/p4ppp/1p6/2p1N3/8/6P1/PP3PKP/RN1R4 b - - 0 17","m":"e8e5 d1d8 e5e8 d8e8","r":515,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XtYIv","f":"4r2k/1p1R4/p1p2p1p/2P5/1P3R2/P7/6PP/7K w - - 1 42","m":"f4f6 e8e1 f6f1 e1f1","r":429,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Xtymq","f":"r4Q1k/p2n2pp/1p6/4P1q1/3p1R2/8/PPP3PP/5RK1 b - - 2 24","m":"d7f8 f4f8 a8f8 f1f8","r":414,"t":"backRankMate endgame mate mateIn2 short"},{"i":"XuOMI","f":"r2kr3/pp3R1B/2pb4/3p4/3P4/2N5/PPP3R1/1K6 w - - 1 29","m":"h7f5 e8e1 c3d1 e1d1","r":475,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"XvQ7J","f":"r5k1/5ppp/p1p5/3pR3/1P1P4/P2q1PQr/7P/4R2K b - - 0 29","m":"h3g3 e5e8 a8e8 e1e8","r":436,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"XvUYr","f":"5rk1/4Q2p/4pr2/p1P5/Pp1p2p1/1P6/6PP/2qR3K w - - 0 33","m":"d1c1 f6f1 c1f1 f8f1","r":430,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"Xweto","f":"3r3k/pp1r3B/n1p5/6P1/5P2/2N1b3/PPP3Q1/2K5 w - - 1 30","m":"c1b1 d7d1 c3d1 d8d1","r":496,"t":"backRankMate master mate mateIn2 middlegame sacrifice short"},{"i":"XywoR","f":"3r4/5k2/ppQqp3/5p2/4pP2/6P1/PPP5/1K5R w - - 5 32","m":"c6c3 d6d1 h1d1 d8d1","r":502,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"Y0A9p","f":"2b2rk1/2Q4p/3p2pb/2pP4/2P1p3/8/R3B1PP/5q1K w - - 0 38","m":"e2f1 f8f1","r":461,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Y1ifo","f":"r1b1r1k1/pp2qppp/2p5/8/N7/1Q3n2/PP3PPP/R2BR1K1 w - - 2 20","m":"d1f3 e7e1 a1e1 e8e1","r":462,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Y2GYr","f":"6k1/p2q1ppp/2p1p3/2p5/8/2bP4/PRPQ1PPP/6K1 b - - 0 18","m":"c3d2 b2b8 d7c8 b8c8","r":440,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Y4AUH","f":"r4r1k/ppq3pp/2p2n2/3pbRB1/8/P2P1Q1P/1PP1N1P1/5R1K b - - 9 20","m":"f6d7 f5f8 d7f8 f3f8 a8f8 f1f8","r":561,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"Y4TXf","f":"6k1/pp3p2/6p1/3p1PB1/3b4/5Q2/PP2r1PP/2q4K w - - 0 34","m":"g5c1 e2e1 f3f1 e1f1","r":519,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"Y4iiG","f":"4r1k1/ppBQ2pp/8/3P4/3b4/8/PP4PP/R3q2K w - - 8 29","m":"a1e1 e8e1","r":452,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Y5TT8","f":"2r5/p5pp/2NRR3/1p6/k7/8/P4PPP/6K1 w - - 1 38","m":"c6a7 c8c1 d6d1 c1d1 e6e1 d1e1","r":512,"t":"backRankMate endgame long mate mateIn3"},{"i":"Y64Vq","f":"1k3r2/ppp5/3p4/8/4P3/P2P3R/1P3R1p/1K6 b - - 0 34","m":"f8f2 h3h8 f2f8 h8f8","r":450,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Y90BJ","f":"r2r4/pp2q3/6k1/2Q1p1n1/2B3b1/8/PPP5/1K1R4 w - - 0 29","m":"c5e7 d8d1","r":517,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Y9THV","f":"2r2Q1k/6pp/1p1N4/p2p4/P2P4/q3P3/6PP/5RK1 b - - 2 37","m":"c8f8 f1f8","r":440,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"YADGT","f":"2r1r2k/pp4pp/5qp1/2QP4/6P1/5N1P/P4PK1/2B1R3 b - - 0 30","m":"c8c5 e1e8 f6f8 e8f8","r":536,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"YDps6","f":"2r3k1/5pp1/4p2p/1p2P3/1Q6/PP6/5PPP/1Rq3K1 w - - 6 31","m":"b1c1 c8c1 b4e1 c1e1","r":426,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"YKHv6","f":"r2Q1k1r/4nppp/1pp5/p7/4P2q/2N5/PPP2PPP/2KR1R2 b - - 4 15","m":"a8d8 d1d8","r":477,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"YKVds","f":"2r3k1/1b3ppp/p3pn2/1pQ1p3/4P3/PB3P1P/1P2N1P1/3R2K1 b - - 0 23","m":"c8c5 d1d8 f6e8 d8e8","r":526,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YLLJl","f":"5r2/ppk5/4p3/3r4/5Rp1/1P6/P1P3PP/7K w - - 0 29","m":"f4f8 d5d1 f8f1 d1f1","r":486,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"YOfbB","f":"8/1R4p1/2p1B1kp/1pP1Pp2/1P6/6P1/P4rPP/1Q3q1K w - - 1 42","m":"b1f1 f2f1","r":412,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"YRgSr","f":"3r2k1/2R2ppp/p2q4/2p5/8/1P6/P1P2PPP/2Q3K1 w - - 2 29","m":"c7a7 d6d1 c1d1 d8d1","r":579,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YXNkP","f":"5rk1/7p/p7/1p2Q2p/5q2/P7/6PP/3R3K w - - 2 37","m":"e5h5 f4f1 d1f1 f8f1","r":531,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"YXgfx","f":"8/5pbk/4P1pq/1R3n1p/P2N4/1P4Q1/6PP/7K w - - 1 55","m":"d4f5 h6c1 g3e1 c1e1","r":526,"t":"backRankMate endgame mate mateIn2 short"},{"i":"YZQVG","f":"1r4k1/5pp1/4p2p/8/2PR1P2/8/P1R3PP/7K w - - 3 30","m":"c4c5 b8b1 c2c1 b1c1 d4d1 c1d1","r":444,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"Ya6Zf","f":"k5r1/pp6/2p5/7p/2PP1Bq1/6R1/P1P1Q1PP/6K1 b - - 2 31","m":"g4e2 g3g8 e2e8 g8e8","r":497,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"YaLHz","f":"3q2k1/5ppp/1pr5/8/1P1R4/P5P1/5P1P/3R2K1 b - - 0 27","m":"d8b8 d4d8 b8d8 d1d8","r":504,"t":"backRankMate endgame fork mate mateIn2 queenRookEndgame short"},{"i":"Ycr4h","f":"7k/p5q1/1p4p1/2pr1p2/8/1P1QP3/P4PPP/6K1 w - - 0 26","m":"d3d5 g7a1 d5d1 a1d1","r":534,"t":"backRankMate endgame mate mateIn2 queenEndgame short"},{"i":"YdqCt","f":"1k1rr3/p1p5/1n3p1Q/8/3P4/2P5/P2N1PPP/1q4K1 w - - 0 27","m":"d2b1 e8e1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"YitLJ","f":"3r3k/5Rpp/4B3/p1R5/2P5/2b5/P4PPP/6K1 w - - 2 31","m":"c5c7 d8d1","r":400,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Yiyun","f":"2r1R1k1/ppp2ppp/8/5b2/5r2/6N1/PPP2PPP/4R1K1 b - - 1 19","m":"c8e8 e1e8","r":506,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Ynkm4","f":"8/5pk1/6p1/3R3p/3qp3/P3P3/1r3PPP/6K1 w - - 0 32","m":"d5d4 b2b1 d4d1 b1d1","r":542,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Yqzop","f":"8/5kBp/6p1/8/8/2NN4/5PPP/r5K1 w - - 1 40","m":"c3d1 a1d1 d3e1 d1e1","r":525,"t":"backRankMate endgame fork hangingPiece mate mateIn2 short"},{"i":"YrTLB","f":"5r1k/6pp/2p1R3/p7/5P2/7P/P1P3PK/8 b - - 0 26","m":"f8f4 e6e8 f4f8 e8f8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"YroLm","f":"7k/p3N1pp/1pr5/4n3/4r3/2Q4P/PP4P1/5R1K b - - 0 35","m":"c6c3 f1f8","r":550,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"YrpOg","f":"6k1/p4ppp/1p2p3/8/1P1P4/P3qP2/2Q3PP/6K1 w - - 0 33","m":"g1h1 e3e1","r":484,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"YsBr6","f":"4r1k1/pp2r2p/2b3p1/2Pp4/3q1p2/5B2/P2Q1PPP/1R4K1 w - - 0 28","m":"d2d4 e7e1 b1e1 e8e1","r":565,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Yuo8S","f":"3r2k1/5p2/2p3pQ/6N1/3q4/8/6PP/1R4K1 w - - 3 29","m":"g1h1 d4d1 b1d1 d8d1","r":555,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"YykQ6","f":"1k3Q2/ppp1q3/8/2p1p1r1/P1B1P3/2PP1R2/1P5r/2K3R1 b - - 0 27","m":"e7f8 f3f8","r":507,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"Z1RXk","f":"5r2/pp4R1/2p5/4p3/3kP3/2N4R/PPP5/1K6 w - - 7 28","m":"g7b7 f8f1 c3d1 f1d1","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Z3xGu","f":"3r2k1/pp3ppp/2p2q2/8/3P4/1P5P/P3QPP1/4R1K1 b - - 0 25","m":"f6d4 e2e8 d8e8 e1e8","r":460,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"Z4WKL","f":"1r5k/p1p1B1pp/3p4/3Pp3/4P3/8/5qPP/5R1K w - - 0 25","m":"f1f2 b8b1 f2f1 b1f1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Z50SZ","f":"3r4/pp3pkp/3q2p1/2p5/8/1P2PQ2/P4PPP/2R3K1 w - - 0 24","m":"c1d1 d6d1 f3d1 d8d1","r":486,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Z5mWr","f":"1k6/ppp2p1p/b7/1q2P3/1Q2N3/1R1r4/5PPP/R5K1 b - - 0 28","m":"d3b3 b4f8 b5e8 f8e8","r":596,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZA88Q","f":"1k3r2/ppp2q2/8/3Pp3/2PnN1Q1/4b2B/PP4PP/R6K w - - 3 24","m":"d5d6 f7f1 a1f1 f8f1","r":513,"t":"backRankMate master mate mateIn2 middlegame sacrifice short"},{"i":"ZJTvC","f":"5rk1/5ppb/2R1p2p/4P3/8/4B2P/1r3PP1/2R3K1 b - - 0 23","m":"f8b8 c6c8 b8c8 c1c8","r":428,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZMKdR","f":"3rr1k1/6p1/2n2p1p/p3p3/8/2P1P1Q1/1B2RPPP/1R1q2K1 w - - 4 28","m":"b1d1 d8d1 e2e1 d1e1","r":529,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZMZUZ","f":"4r1k1/1b2qp1p/P5p1/3r4/2p2Q2/2Pp1n2/1P3PPP/R2BR1K1 w - - 0 25","m":"d1f3 e7e1 a1e1 e8e1","r":565,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZPQoT","f":"5r1k/3b2pp/1p1q4/3P4/1pQ5/1P3PP1/P1R1P2P/6K1 b - - 0 28","m":"f8c8 c4c8 d7c8 c2c8 d6d8 c8d8","r":542,"t":"backRankMate endgame long mate mateIn3"},{"i":"ZQw3r","f":"rn2r1k1/5ppp/8/pp2R3/4P3/6P1/PPP2PB1/3R2K1 b - - 0 22","m":"e8e5 d1d8 e5e8 d8e8","r":434,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZRgnN","f":"2r3k1/3N2p1/4Rp1p/1p1p4/p2n4/8/1B3PPP/6K1 w - - 0 38","m":"b2d4 c8c1 e6e1 c1e1","r":503,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZU9so","f":"3rr3/p1p2k2/1pq2np1/3Pp2p/4P2Q/P1P2R2/5PPP/1RB3K1 w - - 4 22","m":"d5c6 d8d1","r":420,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"ZVhYA","f":"5r1k/r1p3pp/p7/P1p5/8/2P2RNP/1P3P2/4R1K1 b - - 0 27","m":"f8f3 e1e8 f3f8 e8f8","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZZUtF","f":"3q3k/1p3Q2/p5pp/4P3/4B3/1P2P3/P2r1PPP/R5K1 w - - 1 32","m":"f7g6 d2d1 a1d1 d8d1","r":552,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZbHt3","f":"4R1rk/p5pp/4Q3/2p5/3b4/3P2PP/P1PqB1K1/8 b - - 6 32","m":"g8e8 e6e8","r":489,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ZbgNG","f":"rnb1r1k1/pp3ppp/5N2/3P4/2B5/8/Pq3PPP/R2QR1K1 b - - 1 17","m":"b2f6 e1e8","r":577,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"Zcnp3","f":"4r1k1/2B2ppp/p7/3P4/1p1P4/8/P1b2PPP/2R3K1 w - - 0 24","m":"c1c2 e8e1","r":537,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ZdWmX","f":"2r3k1/1p3pp1/1p5p/8/8/P2R1P2/1P4PP/7K w - - 1 30","m":"d3d2 c8c1 d2d1 c1d1","r":419,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Zep21","f":"3R2k1/5ppp/8/p5q1/P7/8/6PP/3R2K1 b - - 0 36","m":"g5d8 d1d8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"ZfWXI","f":"r5k1/1bq2ppp/4p3/1P1p4/3N4/4P3/5PPP/2R3K1 w - - 0 31","m":"c1c7 a8a1 c7c1 a1c1","r":576,"t":"backRankMate endgame mate mateIn2 short"},{"i":"Zhw94","f":"4q2k/p5pp/1p4b1/8/3P4/P1P4P/4Q1P1/5RK1 b - - 0 29","m":"e8e2 f1f8","r":442,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"ZiLF5","f":"4r1k1/5ppp/8/3R4/1p3P2/4p2P/1P4P1/5K2 b - - 1 27","m":"e8e4 d5d8 e4e8 d8e8","r":427,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"Ziz23","f":"1k1r4/1b1q1p2/1pp3p1/b3p2p/P1B1P3/4Q3/4NPPP/1RRr2K1 w - - 10 26","m":"c1d1 d7d1 b1d1 d8d1","r":420,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ZjG3e","f":"6k1/5pp1/4p2p/5b2/3P2P1/pP3PQ1/P1r1q2P/R5K1 b - - 2 34","m":"f5h7 g3b8 c2c8 b8c8","r":406,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZqpkN","f":"4r1k1/p2q1ppp/1p6/3p4/3P4/P1Q1P2P/5PP1/2R3K1 b - - 0 22","m":"e8c8 c3c8 d7c8 c1c8","r":437,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ZrBM1","f":"r2r2k1/pp2bppp/4p3/1b1PN3/8/8/PP3PPP/R1BR2K1 w - - 1 18","m":"d5e6 d8d1","r":443,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"ZuTKd","f":"r1b1k2r/pp1ppp1p/6p1/8/3q4/3B2P1/P1Q1KPP1/2R5 b kq - 0 22","m":"d4f6 c2c8 a8c8 c1c8","r":550,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"Zylti","f":"2kn1b1r/Rppb1q1p/3p4/7Q/4PB2/3B4/2P3PP/5R1K b - - 0 18","m":"f7h5 a7a8","r":499,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"Zyoej","f":"1q4k1/pb3ppp/4pn2/2p5/5Q2/2N5/PPP2PPP/3R2K1 b - - 0 19","m":"b8f4 d1d8 f6e8 d8e8","r":422,"t":"backRankMate endgame mate mateIn2 short"},{"i":"a0G5m","f":"6k1/p5p1/1p2pp1p/2r5/8/1P1q2B1/P4PPP/3R2K1 w - - 0 29","m":"d1d3 c5c1 d3d1 c1d1","r":447,"t":"backRankMate endgame mate mateIn2 short"},{"i":"a8d59","f":"6k1/p1rQ1ppp/1p6/8/4p3/4P1P1/P6K/2R5 b - - 0 27","m":"c7d7 c1c8 d7d8 c8d8","r":403,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"a91KL","f":"1k1r4/ppp2pp1/8/8/2P2P1p/PP2R1nP/1N1R2PK/8 b - - 0 25","m":"d8d2 e3e8 d2d8 e8d8","r":519,"t":"backRankMate endgame mate mateIn2 short"},{"i":"aC6Ed","f":"2r3k1/1B1nQppp/4p3/1P6/P1r5/8/5PPP/q4RK1 w - - 0 27","m":"f1a1 c4c1 a1c1 c8c1","r":442,"t":"backRankMate endgame mate mateIn2 short"},{"i":"aFoTA","f":"2r1k2r/5p2/p5p1/1p1qBbP1/4n2p/1P5P/PP4QR/K2R4 w k - 0 25","m":"d1d5 c8c1","r":509,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"aIFbE","f":"1r4k1/q4ppp/p3p3/1B1bPn2/3P4/2Q2N2/5PPP/R5K1 b - - 0 28","m":"b8b5 c3c8","r":446,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"aKpKU","f":"1k1nr3/2p5/1p6/pQ1p4/3P4/2PR2Pp/PP5P/K3rR2 w - - 1 40","m":"f1e1 e8e1 d3d1 e1d1","r":408,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"aUD7u","f":"8/p3pk2/3nNr2/1p2Qp2/2r5/8/P4PPP/3R2K1 w - - 10 35","m":"d1d6 c4c1 d6d1 c1d1 e5e1 d1e1","r":550,"t":"backRankMate endgame long master mate mateIn3"},{"i":"aXuOZ","f":"r2r2k1/p4ppp/1p2p3/4P3/2b1p3/2P5/P2N1PPP/R1B3K1 w - - 0 18","m":"d2c4 d8d1","r":511,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"aYrq1","f":"k1Q4r/pp6/5n2/3qppr1/5R2/1P2P1Pp/PB5P/2R3K1 b - - 3 32","m":"h8c8 c1c8","r":568,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"abPJO","f":"1r3rk1/1p4pp/p1p1R3/3p4/1Q6/8/PP4PP/4Rq1K w - - 2 27","m":"e1f1 f8f1","r":505,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"ac7kH","f":"3r2k1/p4p1p/4p1p1/1p2P3/4N3/P7/6PP/3r1R1K w - - 1 34","m":"f1d1 d8d1","r":436,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ahV21","f":"r1Q1n1k1/p3Rppp/2p3q1/3p4/8/2N4P/PPP2PP1/4R1K1 b - - 0 22","m":"a8c8 e7e8 c8e8 e1e8","r":478,"t":"backRankMate endgame mate mateIn2 short"},{"i":"apqYZ","f":"1k3bnr/pp3ppp/4p3/8/4bB2/8/BP1KNPPP/2R5 b - - 3 17","m":"b8a8 c1c8","r":482,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"aqHO0","f":"r4Q1k/2B3pp/2n1p3/1p4q1/4P3/P2PP2P/3N2P1/5RK1 b - - 6 26","m":"a8f8 f1f8","r":414,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"arVSh","f":"r1R3kr/pp3ppp/4p3/1B1pP3/3P1P2/P7/1P1K2PP/2R5 b - - 10 23","m":"a8c8 c1c8","r":541,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"avYSX","f":"2R5/r5kp/4ppp1/3nB3/1P1P4/4PN2/1P3PPP/6K1 w - - 0 25","m":"e5d6 a7a1 c8c1 a1c1 f3e1 c1e1","r":535,"t":"backRankMate endgame long mate mateIn3"},{"i":"avo6v","f":"4r1k1/p4ppp/1b4q1/8/3Pp3/2B2QP1/PP3P1P/2R1R1K1 b - - 0 25","m":"e4f3 e1e8","r":484,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"axALL","f":"r2Q2k1/2p2ppp/p4r2/1p6/2P1P3/2P3qP/P1B2PP1/3R1K1R b - - 1 24","m":"a8d8 d1d8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"axooM","f":"3r4/Rp3kp1/1n5p/8/2P1r3/1P6/1P3PPP/4R1K1 w - - 0 26","m":"e1e4 d8d1 e4e1 d1e1","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ay9Sv","f":"6k1/pp3rp1/5n1p/2P5/Q7/N1P5/PBbr1PPP/6K1 w - - 1 25","m":"a3c2 d2d1 c2e1 d1e1","r":438,"t":"backRankMate endgame mate mateIn2 short"},{"i":"b0oIA","f":"R6k/6pp/p4p2/8/1p6/6P1/PP2rP1P/6K1 b - - 4 35","m":"e2e8 a8e8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove rookEndgame"},{"i":"b0uXr","f":"2r3k1/R4p1p/3n2p1/7n/8/BPr5/P4PPP/R5K1 w - - 0 21","m":"a3d6 c3c1 a1c1 c8c1","r":546,"t":"backRankMate endgame mate mateIn2 short"},{"i":"b22UG","f":"2r2Q1k/1bqn2pp/p3p3/1p1pP3/3B2B1/PP6/2r2RPP/1N3R1K b - - 0 32","m":"d7f8 f2f8 c8f8 f1f8","r":473,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"b598o","f":"r3r3/1pp4k/p2p3p/3bq3/PP2P3/7Q/2P2PPP/R3R1K1 w - - 0 23","m":"e4d5 e5e1 a1e1 e8e1","r":497,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bAh0k","f":"r2qB2k/ppp3pp/8/4P3/6n1/2N1Q3/PP4PP/R4RK1 b - - 0 17","m":"g4e3 f1f8","r":414,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"bF1m7","f":"1r4k1/5ppp/3p4/3N1n2/8/2R1P3/3r1PPP/2R3K1 b - - 0 30","m":"d2d5 c3c8 b8c8 c1c8","r":507,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bJH2o","f":"2r3k1/3q1pp1/1Q2p2p/P2pP3/3b4/5N2/2r2PPP/1RB3K1 w - - 0 28","m":"f3d4 c2c1 b1c1 c8c1","r":558,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"bJnrR","f":"3r4/p5kp/1p2p1p1/2p2p2/8/1NP5/PP3PPP/4R1K1 w - - 0 26","m":"e1e6 d8d1 e6e1 d1e1","r":535,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bOgys","f":"2r3k1/pB2qppp/1p2p3/8/2PQ1P2/1P6/P4P1P/3R2K1 b - - 0 24","m":"e7b7 d4d8 c8d8 d1d8","r":561,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"bQBZx","f":"r2qrk2/1p3pp1/2p3n1/3n2P1/2QP2P1/pP3P2/P2N3R/1K5R b - - 0 26","m":"d8e7 h2h8 g6h8 h1h8","r":566,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"bRCcI","f":"2r5/pp1k2pp/3P4/3B1b2/8/8/PP1R1P1P/1K6 w - - 3 29","m":"b1a1 c8c1","r":445,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"bRd4w","f":"2r4k/2N2ppp/8/R1BP4/4n3/7P/5PPK/1r6 b - - 0 35","m":"c8c7 a5a8 b1b8 a8b8 c7c8 b8c8","r":487,"t":"backRankMate endgame long mate mateIn3"},{"i":"bSNvo","f":"2rR2k1/p1Q2ppp/bp6/4p3/P3P3/4nP2/6PP/7K b - - 4 36","m":"c8d8 c7d8","r":556,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"bVEN6","f":"1k1r4/ppp2ppp/2p3b1/6P1/1B5P/3P4/2P2K2/4R3 b - - 0 29","m":"d8d4 e1e8 d4d8 e8d8","r":499,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bX5bS","f":"q3kbnr/3n1ppp/p3p3/1p6/2p5/2N3P1/PP1PPP1P/R1BQK2R w KQk - 0 10","m":"a2a4 a8h1","r":497,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"bXAxJ","f":"3r1rk1/ppnq1pb1/2p2np1/4pPB1/1PN1P3/2P2R1Q/P1B3PP/R6K w - - 7 24","m":"a1d1 d7d1 c2d1 d8d1 f3f1 d1f1","r":592,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"baR32","f":"2k4r/1pp5/p3q3/P2r1p1p/1Q4p1/2P5/1P3PPP/4R1K1 w - - 0 25","m":"e1e6 d5d1 e6e1 d1e1","r":551,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"bb7WI","f":"4r3/8/2k1r2p/1p6/4N3/2bP1R2/5PPP/R5K1 w - - 0 27","m":"e4c3 e6e1 a1e1 e8e1","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bkev0","f":"1r6/3k1pp1/p3p2p/3pP3/P1nP4/2r5/R4PPP/2R3K1 w - - 0 34","m":"c1c3 b8b1 c3c1 b1c1","r":457,"t":"backRankMate endgame mate mateIn2 short"},{"i":"blX40","f":"5r2/1p3rkp/p5p1/2Pp4/1P6/P7/2B3PP/3Qq2K w - - 0 35","m":"d1e1 f7f1 e1f1 f8f1","r":526,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"blt8F","f":"2r3k1/p4ppp/1p3n2/8/1PR1P3/PQ6/5PPP/2q3K1 w - - 6 24","m":"c4c1 c8c1 b3d1 c1d1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bnIMg","f":"3r2k1/p1R2ppp/1b6/3N4/1nP5/5N2/P4PPP/6K1 w - - 3 23","m":"d5b6 d8d1 f3e1 d1e1","r":468,"t":"backRankMate endgame mate mateIn2 short"},{"i":"buZmN","f":"8/2r5/5R2/1k3B1p/1P4p1/1P6/6PP/7K w - - 1 40","m":"f5g6 c7c1 f6f1 c1f1","r":503,"t":"backRankMate endgame mate mateIn2 short"},{"i":"bvzWD","f":"4r1k1/ppp3pp/5r2/1b2N3/5B2/2P5/PP3RPP/R2B3K w - - 3 26","m":"e5g4 e8e1 f2f1 e1f1","r":422,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cEtJt","f":"2r3k1/R4ppp/4p1b1/3pP3/3P4/5P1P/6P1/2b1NK2 b - - 2 30","m":"c8c4 a7a8 c4c8 a8c8","r":498,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cF1tp","f":"6k1/p7/1p2np1p/8/8/2r5/P4PPP/4R1K1 w - - 0 23","m":"e1e6 c3c1 e6e1 c1e1","r":431,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"cFnz7","f":"r4rk1/pbpn2pp/1p6/3pP3/1P1Pp3/PQ2P2R/3N2PP/R1B2q1K w - - 6 20","m":"d2f1 f8f1","r":436,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"cGZC8","f":"2r3k1/1q3pp1/p6p/8/3P4/4PN2/P4PPP/1R4K1 w - - 0 25","m":"b1b7 c8c1 f3e1 c1e1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cIlWM","f":"2Q2rk1/p4ppp/1p3qb1/3PR3/2B5/8/PP3PPP/4R1K1 b - - 0 20","m":"f8c8 e5e8 c8e8 e1e8","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cJoHt","f":"4r3/5p1k/4q1p1/1Q6/p2p3p/3R1B1P/P4PPB/2R3K1 w - - 3 35","m":"a2a3 e6e1 c1e1 e8e1","r":400,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"cLKVO","f":"3r1rk1/pp3ppp/2p5/7n/4P1Q1/2N2R2/PPP3PP/3q3K w - - 10 20","m":"c3d1 d8d1 f3f1 d1f1","r":465,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cM2Xw","f":"6k1/P2r1pp1/rR5p/8/8/8/5PPP/3R2K1 w - - 0 33","m":"d1d7 a6a1 b6b1 a1b1 d7d1 b1d1","r":558,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"cMYgq","f":"5rk1/ppp3p1/7p/3pP3/3B1r2/8/PP4PP/R4R1K w - - 0 24","m":"d4c3 f4f1 a1f1 f8f1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cRCBo","f":"3bQ2k/2p3pp/1p1p4/7q/3P4/2P4P/PP3rP1/4R1NK b - - 1 24","m":"h5e8 e1e8 f2f8 e8f8","r":482,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"cactY","f":"2kr2nQ/ppp4p/2p2b2/5b2/8/2N1R3/PP3PPP/R1Bq2K1 w - - 3 17","m":"c3d1 d8d1 e3e1 d1e1","r":429,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cbSNB","f":"2r3r1/pk6/1p3p1p/4pn2/3p4/P2P1NB1/Q4PPP/1Rq3K1 w - - 10 32","m":"b1c1 c8c1 f3e1 c1e1","r":496,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"cmQLy","f":"3r2k1/5pp1/p6p/8/4P2P/1R3PnN/PpPr2P1/1K2R3 w - - 7 27","m":"b3b2 d2d1 e1d1 d8d1","r":557,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cpJpR","f":"6k1/5ppp/p1p1p3/1PP1P3/2n2P2/4P3/5KPP/R1Br4 b - - 2 24","m":"a6b5 a1a8 d1d8 a8d8","r":558,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cw0Id","f":"4r3/p4p1k/1p1P3p/6p1/2P5/1P1R4/P3rPPP/R5K1 w - - 1 29","m":"d6d7 e2e1 a1e1 e8e1","r":489,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"cwefu","f":"8/1pp1k3/p3b3/4p3/P6N/2Pr4/1P4PP/4R2K w - - 0 31","m":"e1e5 d3d1 e5e1 d1e1","r":508,"t":"backRankMate endgame mate mateIn2 short"},{"i":"cwhZC","f":"6k1/5pp1/2p4p/2B5/2rPp3/4b3/6PP/4R2K w - - 0 43","m":"e1e3 c4c1 e3e1 c1e1","r":511,"t":"backRankMate endgame mate mateIn2 short"},{"i":"czKh4","f":"6k1/1p3r2/5r1p/p7/2P5/8/PP2q1PP/R3R2K w - - 0 30","m":"e1e2 f6f1 a1f1 f7f1","r":467,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"czNn3","f":"6k1/pp3p1p/6b1/3pr3/Q7/2P5/PP6/K3q2R w - - 4 34","m":"h1e1 e5e1 a4d1 e1d1","r":548,"t":"backRankMate endgame mate mateIn2 short"},{"i":"czQ6M","f":"r2R3k/1p2Q1pp/5pq1/4b3/2B5/8/PP3PPP/6K1 b - - 11 27","m":"a8d8 e7d8 g6e8 d8e8","r":537,"t":"backRankMate endgame mate mateIn2 short"},{"i":"d0Qqg","f":"r1bq1Q1k/ppp3pp/8/4p3/8/2PPn3/PP4PP/RN3RK1 b - - 2 14","m":"d8f8 f1f8","r":431,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"d4aRR","f":"6k1/6pp/5p2/rP6/2R5/8/5PPP/6K1 w - - 0 33","m":"c4b4 a5a1 b4b1 a1b1","r":410,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"d5aPT","f":"rn4k1/pp1r1ppp/3q4/8/5P2/1P6/1P1BPPBP/2RR2K1 b - - 0 18","m":"d6g6 c1c8 d7d8 c8d8","r":457,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dDbn7","f":"4r2k/ppp1q1pp/6r1/4b3/3pP2P/3P1QPB/PP5K/R4R2 b - - 3 24","m":"e7h4 f3f8 e8f8 f1f8","r":472,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"dDjeb","f":"4r1k1/Qb2qppp/2p5/5n2/8/2N2N2/PP3PPP/3R2K1 w - - 1 23","m":"d1e1 e7e1 f3e1 e8e1","r":485,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dLecC","f":"4Qn1k/1p4b1/p3B3/2r5/P6p/8/1P3qPP/5R1K w - - 6 32","m":"f1f2 c5c1 f2f1 c1f1","r":484,"t":"backRankMate endgame master masterVsMaster mate mateIn2 short"},{"i":"dPHTa","f":"6k1/5pPp/p1p5/8/8/8/Pr3PPP/2R3K1 w - - 0 22","m":"c1c6 b2b1 c6c1 b1c1","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dPc38","f":"2r3k1/p4ppp/1n6/3p4/3R4/1P2R3/r3NPKP/8 b - - 1 29","m":"c8c2 e3e8","r":505,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"dRjGt","f":"r5k1/2P2p2/6p1/2N5/3R4/8/5PPP/6K1 w - - 1 46","m":"d4d7 a8a1 d7d1 a1d1","r":493,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dTaU7","f":"2r3k1/2r2ppp/p7/1p3n2/4pN2/2P1Q2P/PP1R2P1/3R2K1 b - - 0 32","m":"f5e3 d2d8 c8d8 d1d8","r":443,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dU3d8","f":"r3rbk1/ppB2ppp/2n5/2P5/8/5R2/PP2B1PP/R2q3K w - - 0 16","m":"e2d1 e8e1 f3f1 e1f1","r":569,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dUkAJ","f":"4r1k1/p3Qppp/8/2p5/5P2/4p2P/PPP4P/2KR4 b - - 0 20","m":"e8e7 d1d8 e7e8 d8e8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dVhcQ","f":"5Q1k/ppr3pp/1q3r2/2N5/1P1P4/P3P3/6PP/5RK1 b - - 0 31","m":"f6f8 f1f8","r":411,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"dWyai","f":"5r1k/6pp/1q6/5R2/1p2p3/4r2P/P5P1/2R4K b - - 0 32","m":"f8f5 c1c8 b6d8 c8d8 f5f8 d8f8","r":457,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"dXFZA","f":"r3r1k1/ppp2ppp/4qb2/4Nb2/3P1B2/2P3Q1/P4PPP/R3R1K1 w - - 13 19","m":"e5g4 e6e1 a1e1 e8e1","r":509,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"damu2","f":"8/pp3R2/2npN1pk/7p/8/2P5/PP1r2PP/7K w - - 4 26","m":"f7f8 d2d1 f8f1 d1f1","r":562,"t":"backRankMate endgame mate mateIn2 short"},{"i":"daoQX","f":"r2Q2kr/p4ppp/1p2pn2/1N6/6P1/P4q2/1PP2P1P/2KR3R b - - 4 17","m":"a8d8 d1d8 f6e8 d8e8","r":422,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dcnCz","f":"3r2k1/5p2/2R3p1/2p1n2p/2N5/b7/2P2PPP/6K1 w - - 1 24","m":"c4e5 d8d1","r":435,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"dhJ8h","f":"2r3k1/1pq2pbp/6p1/p3p3/4Q3/BP2P3/P4PPP/2r2RK1 w - - 0 23","m":"f1c1 c7c1 a3c1 c8c1","r":443,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"diwhA","f":"r4r1k/2q2ppp/p2pN3/6b1/1p2P3/7P/PP2NQP1/4RRK1 b - - 0 21","m":"f7e6 f2f8 a8f8 f1f8","r":514,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"dkNcn","f":"1r4k1/5p1p/R3p1p1/p3P3/B1p5/1PP5/5PPP/6K1 w - - 0 28","m":"b3c4 b8b1 a4d1 b1d1","r":435,"t":"backRankMate endgame mate mateIn2 short"},{"i":"dmVE6","f":"1k1r4/pppB1p2/6p1/q3p1P1/4P3/5P2/3P3R/3RK3 b - - 0 32","m":"d8d7 h2h8 d7d8 h8d8","r":536,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"dnGgo","f":"N1bQ1k1r/p3nppp/1pn5/4P3/4P3/5N2/q1P2PPP/3RKB1R b K - 2 15","m":"c6d8 d1d8","r":452,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"dnThY","f":"5r1k/ppR1R2p/6p1/8/3b4/6N1/PP4PP/5r1K w - - 10 27","m":"g3f1 f8f1","r":492,"t":"backRankMate endgame master masterVsMaster mate mateIn1 oneMove"},{"i":"dpbib","f":"3r2k1/R1p2ppp/P7/4p3/4P3/3P4/r6P/6K1 b - - 0 28","m":"d8d3 a7a8 d3d8 a8d8","r":545,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dtefn","f":"7k/6pp/8/p7/1R1P4/4P1P1/R1r2PKP/2r5 b - - 0 35","m":"c2a2 b4b8 c1c8 b8c8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dvBkA","f":"3r2k1/p4ppp/1p6/3P4/8/1P3P2/P4P1P/2R2K2 b - - 0 25","m":"d8d5 c1c8 d5d8 c8d8","r":400,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"dvx1W","f":"3r1Q1k/6pp/1p6/p7/P3P3/1P1P4/4q1PP/5R1K b - - 2 31","m":"d8f8 f1f8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"e1enL","f":"3r2k1/pp2pp2/6pp/3r4/4q3/1QP5/PP3PPP/4R1K1 w - - 0 23","m":"e1e4 d5d1 b3d1 d8d1 e4e1 d1e1","r":403,"t":"backRankMate endgame long mate mateIn3 queenRookEndgame"},{"i":"eCM9P","f":"8/p6k/6p1/2p2b1p/1pP2r2/1P6/PB1q2PP/3R3K w - - 0 32","m":"d1d2 f4f1","r":482,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"eD01q","f":"1k4r1/ppp5/2nb2Q1/7p/4R2B/2P3P1/PP3P2/6K1 b - - 0 29","m":"g8g6 e4e8 c6d8 e8d8","r":415,"t":"backRankMate endgame mate mateIn2 short"},{"i":"eDUwm","f":"r4rk1/3b2np/p3p1p1/1p1p4/1P6/P1NQ2R1/6PP/RB3q1K w - - 2 24","m":"d3f1 f8f1","r":483,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"eFGiG","f":"5n2/5bk1/5N1R/1rP1Pp2/5P2/4P3/5RPp/7K w - - 3 52","m":"h6h2 b5b1 f2f1 b1f1","r":516,"t":"backRankMate endgame mate mateIn2 short"},{"i":"eGdTD","f":"3r3k/6p1/7p/1p6/1P1r1Q2/P6P/5PP1/R5K1 w - - 5 31","m":"f4h2 d4d1 a1d1 d8d1","r":461,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"eOZTp","f":"3r2k1/5ppp/4p3/8/4Q3/5P2/P5PP/2Rr3K w - - 1 32","m":"c1d1 d8d1 e4e1 d1e1","r":443,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"ePCbz","f":"3r1k2/pQp2pbp/2Brn1p1/3Np3/8/8/PPP2PPP/R5K1 w - - 13 26","m":"d5c7 d6d1 a1d1 d8d1","r":575,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eQTh6","f":"3qr1k1/pp2bppp/6b1/2pn4/6P1/3P1N1P/PPP1QP2/4RRK1 b - - 4 19","m":"e7f6 e2e8 d8e8 e1e8","r":454,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eXUMP","f":"5rk1/1p4pp/2n1pr2/p1pp4/P7/NPPP2R1/1B4PP/R2Q1q1K w - - 6 25","m":"d1f1 f6f1 a1f1 f8f1","r":418,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eaJXU","f":"3r2k1/5ppp/p2R4/1pR1p3/4P3/8/PP3PPP/6K1 b - - 0 26","m":"d8d6 c5c8 d6d8 c8d8","r":400,"t":"backRankMate endgame master mate mateIn2 rookEndgame short"},{"i":"ebJ1b","f":"3r2k1/pB3p1p/6p1/4n1Q1/2b5/4P3/5PPP/R2q2K1 w - - 5 27","m":"a1d1 d8d1","r":492,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ee7Dm","f":"5bk1/q6p/1p1p4/1PpP1p2/1pP1p2p/1P2P2P/5PPB/3Q2K1 w - - 0 32","m":"d1h5 a7a1 h5d1 a1d1","r":531,"t":"backRankMate endgame mate mateIn2 short"},{"i":"ehalc","f":"2Q3kr/pN3ppp/8/8/1P6/Pq3NPb/4r2P/R1R3K1 b - - 1 24","m":"h3c8 c1c8 e2e8 c8e8","r":458,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"eltEZ","f":"1Q6/4rk1p/1p2r1p1/2p5/3p4/8/5PPP/q4RK1 w - - 0 39","m":"f1a1 e6e1 a1e1 e7e1","r":546,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"euyAR","f":"2r3k1/pp3ppp/8/3rN3/1P6/8/P4PPP/3R2K1 w - - 0 26","m":"d1d5 c8c1 d5d1 c1d1","r":400,"t":"backRankMate endgame master mate mateIn2 short"},{"i":"ewar1","f":"3r1k2/4Npp1/p4p1p/1p3q2/2p5/P3PN2/Q4PPP/3R2K1 w - - 6 32","m":"e7f5 d8d1 f3e1 d1e1","r":500,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"eyMVg","f":"4rbk1/p1q2ppp/1p1p4/2pPr3/2P5/P3BQ2/1P3PPP/3RR1K1 w - - 3 20","m":"e3f4 e5e1 d1e1 e8e1","r":541,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ezwI7","f":"1r6/5Rpk/4p2p/P1Rn4/3P4/P7/5PPP/7K w - - 3 37","m":"a5a6 b8b1 c5c1 b1c1","r":536,"t":"backRankMate endgame mate mateIn2 short"},{"i":"f09jd","f":"r1b3k1/p4ppp/1p2pb2/8/4P3/2N2P2/PP4PP/3R2K1 b - - 0 16","m":"f6c3 d1d8","r":444,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"f1pW6","f":"r5k1/5ppp/p1p1p3/3r1P2/P7/1PqPQ3/2P3PP/4RR1K b - - 0 23","m":"e6f5 e3e8 a8e8 e1e8","r":583,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"f3RAJ","f":"4r1k1/p3Qppp/Pp6/4P3/8/3n1N2/5PPP/2R3K1 b - - 0 26","m":"e8e7 c1c8 e7e8 c8e8","r":556,"t":"backRankMate endgame mate mateIn2 short"},{"i":"f565O","f":"5r1k/p2n3p/6p1/2p5/P2P4/B1P1p3/1Q4PP/4Rq1K w - - 2 26","m":"e1f1 f8f1","r":425,"t":"backRankMate endgame master masterVsMaster mate mateIn1 oneMove"},{"i":"fArbA","f":"1r4k1/p4Npp/2p1p2n/2P3q1/3P4/Pr2P2b/5QP1/R2N1RK1 b - - 0 24","m":"h6f7 f2f7 g8h8 f7f8 b8f8 f1f8","r":597,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"fBRa8","f":"1r3Q1k/1Pp3pp/3p2p1/8/3N2P1/8/PP3RK1/4q3 b - - 17 35","m":"b8f8 f2f8","r":404,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fFpoS","f":"2r3k1/7p/6p1/p2n4/3Bp3/P7/5PPP/4R1K1 w - - 2 30","m":"e1e4 c8c1 e4e1 c1e1","r":542,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fGgjv","f":"8/2p3kp/P2pB1p1/3P4/8/2r5/1Q3RPP/2q4K w - - 1 34","m":"b2c1 c3c1 f2f1 c1f1","r":421,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fIpT2","f":"3q1rk1/p3b1pp/np2p3/3pPp1Q/3N1P2/6R1/PP3rPP/R1B4K w - - 2 18","m":"d4e6 f2f1","r":593,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"fJVTW","f":"8/4kppp/2r1p3/1R6/pP6/4P3/5PPP/6K1 w - - 0 35","m":"b5a5 c6c1","r":446,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"fLlS3","f":"1r4k1/4bp1p/4p1p1/2P5/qP6/P3PN2/Q4PPP/3R2K1 w - - 6 34","m":"f3e5 a4d1","r":501,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"fOotF","f":"5r2/pp4nk/8/2p1N2p/4P2P/2P5/PP1q2P1/K2R4 w - - 0 32","m":"d1d2 f8f1 d2d1 f1d1","r":444,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fOxZZ","f":"5rk1/3R1ppp/p1r1p3/1p6/8/P1P5/1P3PPP/3R2K1 b - - 0 23","m":"f8c8 d7d8 c8d8 d1d8","r":504,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"fVdPa","f":"2r5/6pp/p4p2/5k2/1R6/4PN2/5PPP/6K1 w - - 0 29","m":"b4a4 c8c1 f3e1 c1e1","r":471,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fY4kF","f":"1q1R2k1/p3Qppp/1pr5/8/2P5/P6P/5PP1/7K b - - 1 33","m":"b8d8 e7d8","r":510,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"fZk1o","f":"1RQ2rk1/5ppp/4p3/p3P3/5P2/3q4/5KPP/8 b - - 3 32","m":"f8c8 b8c8 d3d8 c8d8","r":445,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"ff4a8","f":"2r4k/1R4p1/p6p/3n4/P1rB4/4P3/5PPP/R5K1 w - - 3 37","m":"b7g7 c4c1 a1c1 c8c1","r":466,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fjLgs","f":"2R3k1/5ppp/p2rb3/8/3p4/Pp1P4/1P3PPP/4R1K1 b - - 1 29","m":"e6c8 e1e8","r":420,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fm1t7","f":"1r1r2k1/1b3ppp/p3p3/1p2n3/3RN3/P7/1PP1BPPP/3R2K1 b - - 3 20","m":"b7e4 d4d8 b8d8 d1d8","r":415,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"fnkkn","f":"2b1N3/4r3/1k2r1p1/2pQ4/PpPp4/1P6/5PPP/R5K1 w - - 5 31","m":"e8c7 e6e1 a1e1 e7e1","r":544,"t":"backRankMate endgame mate mateIn2 short"},{"i":"foosS","f":"r4rk1/p2Q3p/2pb2p1/4p1p1/4P3/2N4P/PPP3P1/1K3q1R w - - 0 20","m":"h1f1 f8f1 c3d1 f1d1","r":551,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fsCyw","f":"r1b2k1r/ppq1nppp/2P1p3/1N6/8/8/P2Q1PPP/3RK2R b K - 9 17","m":"c7b6 d2d8 b6d8 d1d8","r":547,"t":"backRankMate master mate mateIn2 middlegame short"},{"i":"ftdOi","f":"4rrk1/6pp/2p5/pbRpP3/8/1Q6/PP4PP/4Rq1K w - - 1 31","m":"e1f1 f8f1","r":486,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"fuBqT","f":"r4rk1/5ppp/2p2b2/2B5/3p4/3P1P2/1Pp1RP1P/4R1K1 b - - 0 24","m":"f8e8 e2e8 a8e8 e1e8","r":499,"t":"backRankMate endgame mate mateIn2 short"},{"i":"fvEao","f":"3q2k1/5ppp/p1p5/2Q1p3/8/2P5/PP3PPP/6K1 w - - 0 25","m":"c5c6 d8d1","r":435,"t":"backRankMate endgame mate mateIn1 oneMove queenEndgame"},{"i":"fvidF","f":"8/2R4p/p1Bk2p1/2r1pp2/3b4/1P1R4/P5PP/7K w - - 6 44","m":"c7h7 c5c1 d3d1 c1d1","r":454,"t":"backRankMate endgame fork mate mateIn2 short"},{"i":"fxMwh","f":"2r3k1/5p2/p6p/3pq1p1/3P4/P7/5PPP/4R1K1 w - - 0 30","m":"e1e5 c8c1 e5e1 c1e1","r":590,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"fyXad","f":"r4rk1/ppp2ppp/2n2q2/8/3P4/2P4P/P2NQPP1/R3R1K1 b - - 0 16","m":"f8e8 e2e8 a8e8 e1e8","r":463,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"g0Hsk","f":"1k4rr/pppR1p2/5p2/b7/4Nn2/2P2B2/PP4P1/3R2K1 b - - 1 27","m":"h8h6 d7d8 g8d8 d1d8","r":529,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"g0XEQ","f":"6k1/2B2ppb/5b1p/1R3P1P/2K3P1/1pR5/1r4B1/4r3 b - - 0 41","m":"f6c3 b5b8 e1e8 b8e8","r":527,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"g2GNm","f":"3r1rk1/1pp2p1p/p4p2/8/4B3/1n6/PP3PPP/R1B3K1 w - - 1 22","m":"a2b3 d8d1","r":429,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"g5LRn","f":"4n1k1/4pp1p/6p1/2N5/1p6/rP2P3/5PPP/3R2K1 w - - 3 27","m":"d1d4 a3a1 d4d1 a1d1","r":475,"t":"backRankMate endgame mate mateIn2 short"},{"i":"g6dpT","f":"2r3k1/1pr2ppp/p3p3/4P3/4bP2/1N4P1/PP1R3P/K2R4 b - - 2 26","m":"e4c2 d2d8 c8d8 d1d8","r":487,"t":"backRankMate endgame mate mateIn2 short"},{"i":"g7VqM","f":"3rr1k1/2p2pp1/p6p/4N3/1n2P3/7P/1P2qPPQ/4R1K1 w - - 0 24","m":"e1e2 d8d1 e2e1 d1e1","r":439,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gAlF3","f":"3rR2k/p5pp/1p3p2/8/Q6P/3p1P2/PPr2qP1/3R3K b - - 7 39","m":"d8e8 a4e8","r":490,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"gBoxS","f":"r5k1/1pp2pp1/7p/1p6/P1N5/2PR4/1P3PPP/6K1 w - - 0 22","m":"a4b5 a8a1 d3d1 a1d1","r":483,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gEip8","f":"4r2k/p5pp/1pQBp1q1/3pP3/3P4/2P4P/P5PK/8 b - - 0 27","m":"g6e4 c6e8","r":411,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"gF6uW","f":"5rk1/pp4p1/2p4p/6b1/P1P1p3/4P1R1/1BPP4/2K2r1R w - - 1 23","m":"h1f1 f8f1","r":469,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gK6Ce","f":"2r4k/5ppp/p1pR2b1/2p1p1n1/2P5/P6P/1P3PP1/3R2K1 b - - 3 25","m":"g5e4 d6d8 c8d8 d1d8","r":496,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gMIt4","f":"4r1k1/p3rp1p/5p2/3Q4/8/8/P4PPP/Rq4K1 w - - 0 22","m":"a1b1 e7e1 b1e1 e8e1","r":400,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"gMab7","f":"3rQ2k/p5pp/3q4/n1p5/8/5P1P/P5P1/4R2K b - - 4 32","m":"d8e8 e1e8 d6f8 e8f8","r":489,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gMp3A","f":"5r2/pp5k/1b6/8/6R1/4P3/1P4PP/3R1r1K w - - 2 32","m":"d1f1 f8f1","r":457,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gNvgS","f":"1r6/p2N1k2/b1p3pQ/3pp3/8/2P5/P5PP/1q1R3K w - - 4 30","m":"d1b1 b8b1 h6c1 b1c1","r":510,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gQAir","f":"6k1/2P2ppp/8/8/8/6P1/2K4P/1r6 b - - 4 44","m":"b1b7 c7c8q","r":478,"t":"advancedPawn backRankMate endgame mate mateIn1 oneMove promotion"},{"i":"gULYk","f":"6k1/5ppp/1R6/8/3p4/8/b4PPP/2r2BK1 b - - 1 33","m":"a2c4 b6b8","r":499,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gUUNB","f":"4rb1r/Q1p2k1p/3p1Pp1/4q3/1P6/4B3/P4PPP/2R1R1K1 w - - 2 19","m":"e3d4 e5e1 c1e1 e8e1","r":509,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"gYo6w","f":"Bn4k1/p1N2ppp/bp6/8/3b4/3P4/PP4PP/R1B1rRK1 w - - 0 18","m":"g1h1 e1f1","r":506,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"gayKX","f":"1k1Q2q1/ppp4p/8/8/8/2N2r2/PPP2P1P/3R1R1K b - - 3 21","m":"g8d8 d1d8","r":438,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gcSmU","f":"6k1/p4pp1/4bn1p/3pN3/2pP4/q1P1P3/P1B2PPP/Qr4K1 w - - 0 24","m":"c2b1 a3c1","r":591,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"gf7Em","f":"1rrR2k1/5ppb/p6p/4p2q/4P3/1NN2P2/PP1Q2P1/1K1R4 b - - 1 29","m":"c8d8 d2d8 b8d8 d1d8","r":434,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"ggpuR","f":"5bk1/7p/6p1/Bp2p3/p3qp2/P1Pr4/1Qb2PPP/4R1K1 w - - 0 31","m":"e1e4 d3d1 e4e1 d1e1","r":423,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gjK0i","f":"6k1/p4ppp/8/4P3/5P2/PR6/1Pr2qPP/1K4NR b - - 5 26","m":"f2g2 b3b8 c2c8 b8c8","r":426,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gn68B","f":"1r2r1k1/1p3ppp/p2q1n2/8/2p2P2/6Q1/PP3PPP/R1BR2K1 w - - 0 18","m":"d1d6 e8e1","r":578,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"gnUtZ","f":"3r2k1/pp2r1bp/5pp1/8/8/6B1/PPP2PPP/4R1K1 w - - 0 20","m":"e1e7 d8d1 e7e1 d1e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"goVBg","f":"4br1k/p5pp/4P3/3B4/P5r1/1PN1b1P1/6KP/2R2R2 b - - 1 27","m":"e3c1 f1f8","r":506,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"gqEy9","f":"2R4k/p5pp/3r1p2/5q2/3P1p2/5N1P/PP3PP1/2R3K1 b - - 1 30","m":"d6d8 c8d8","r":400,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"grd8c","f":"8/5ppk/1pR2b2/pr6/1P1P4/P3P3/5PPP/6K1 w - - 0 27","m":"b4a5 b5b1 c6c1 b1c1","r":547,"t":"backRankMate endgame mate mateIn2 short"},{"i":"gzIJd","f":"r1b1r1k1/ppp2ppp/8/4N3/8/4P3/PP2BPPP/3R1RK1 b - - 0 14","m":"e8e5 d1d8 e5e8 d8e8","r":543,"t":"backRankMate endgame mate mateIn2 short"},{"i":"h2XYq","f":"1k1r4/ppp4R/5p2/3Q4/8/P2P4/KPP4P/4r3 b - - 0 23","m":"d8d5 h7h8 e1e8 h8e8 d5d8 e8d8","r":456,"t":"backRankMate endgame long mate mateIn3 rookEndgame"},{"i":"h2eM5","f":"1k3br1/ppp2ppp/3rb3/8/2N2N2/1P6/P4PPP/R3R1K1 b - - 0 19","m":"e6c4 e1e8 d6d8 e8d8","r":552,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"h4hFs","f":"6k1/5ppp/8/3pPn2/4bP2/P4B2/1R3KPP/2r5 b - - 4 33","m":"e4d3 b2b8 c1c8 b8c8","r":411,"t":"backRankMate endgame mate mateIn2 short"},{"i":"h8BZX","f":"r5k1/p1p2pp1/b1r4p/4P3/8/4R3/q4PPP/Q5K1 w - - 0 26","m":"a1a2 c6c1 e3e1 c1e1","r":412,"t":"backRankMate endgame mate mateIn2 short"},{"i":"h8ymM","f":"1k6/1pp4R/7p/6p1/8/7P/r5PK/8 b - - 1 42","m":"a2a7 h7h8","r":489,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"},{"i":"hDXK6","f":"r4rk1/pp1nR2p/2p3p1/8/8/1Pp4Q/P1P3PP/R4q1K w - - 2 22","m":"a1f1 f8f1","r":578,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hG2PL","f":"2Q1b1k1/1p3ppp/4p3/pq2P3/3P4/4B3/3N1PPP/6K1 w - - 0 29","m":"d2c4 b5b1 e3c1 b1c1","r":458,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hHj4K","f":"3r3r/k2q4/2p5/2P2p1p/5Q2/2P5/P4PPB/1n3RK1 w - - 0 31","m":"f1b1 d7d1 b1d1 d8d1","r":456,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"hKEA5","f":"1r4k1/p4ppp/5n2/4q3/2pN4/2P2Q2/P4PPP/4R1K1 w - - 2 22","m":"e1e5 b8b1 f3d1 b1d1 e5e1 d1e1","r":574,"t":"backRankMate endgame long mate mateIn3"},{"i":"hKd2R","f":"r4Q1k/1p4pp/1Pp3r1/p1qp4/P7/8/5RPP/5R1K b - - 5 35","m":"a8f8 f2f8 c5f8 f1f8","r":545,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"hMYFe","f":"4qQ1k/1b4pp/4B3/3nP3/1p1B4/1P5P/2P3P1/5R1K b - - 0 40","m":"e8f8 f1f8","r":440,"t":"backRankMate endgame master mate mateIn1 oneMove"},{"i":"hNU9m","f":"6k1/2q2ppp/4p3/1p6/4n1P1/1B6/1PP3Q1/4K3 b - - 1 36","m":"e4g5 g2a8 c7b8 a8b8","r":407,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hNtMh","f":"1nRr2k1/4nppp/pq2p3/1p6/1B6/P3P1P1/1P1Q1PBP/3R2K1 b - - 0 27","m":"e7c8 d2d8 b6d8 d1d8","r":520,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"hTMZs","f":"3rQ1k1/5npp/8/1B6/2P5/5P2/P2q1P1P/4R2K b - - 6 29","m":"d8e8 e1e8","r":562,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hTldr","f":"6k1/5ppp/1p2pqb1/pP6/P2b2P1/B5NP/2rQ1nBK/2R5 b - - 5 32","m":"c2d2 c1c8 f6d8 c8d8","r":419,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"hXYmY","f":"8/R3R3/1ppr3p/8/P1k5/2P5/5PPP/6K1 w - - 3 31","m":"e7e3 d6d1 e3e1 d1e1","r":424,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"hZ7vN","f":"4r3/ppp4k/2nq2bp/5N2/6Q1/2P5/P4PPP/6K1 w - - 2 27","m":"f5d6 e8e1","r":487,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ha8Ff","f":"1Q6/3p1ppk/2p4p/4NP2/4P3/2q5/6PP/1Rn4K w - - 1 32","m":"e5f7 c3e1","r":429,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hgWMd","f":"2r3k1/np3ppp/5b2/3p1P2/1P1P4/1NRB4/P5P1/4R1K1 b - - 0 26","m":"c8c3 e1e8","r":402,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hiqdV","f":"3r2k1/1p3ppp/p7/8/4p3/1P2n1P1/1P1Q3P/1BR4K b - - 0 35","m":"d8d2 c1c8 d2d8 c8d8","r":470,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hk8lw","f":"6k1/5pp1/3p2bp/1p6/1P4P1/2P1RPKP/r6N/8 b - - 6 33","m":"g6h7 e3e8","r":413,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"hkAaA","f":"4r2k/6pp/2QR2q1/4p3/P5BP/6P1/6K1/8 b - - 0 38","m":"g6g4 c6e8","r":476,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove"},{"i":"hpzVr","f":"6k1/5ppp/8/8/8/5P1P/R1p3PK/8 b - - 0 42","m":"c2c1q a2a8 c1c8 a8c8","r":438,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"hrQgU","f":"r3Q2k/pp1n2pp/2p5/8/3P3q/1B6/PPP2P1P/R3R1K1 b - - 0 20","m":"a8e8 e1e8 d7f8 e8f8","r":469,"t":"backRankMate endgame mate mateIn2 short"},{"i":"hrWDy","f":"1k1r3r/pp5p/2p1p3/7N/n7/2P5/P1P2PPP/1R1R2K1 w - - 2 20","m":"b1b3 d8d1","r":450,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"hrbGF","f":"3r2k1/5ppp/p2R4/2R5/1P2pP2/P7/5P1P/6K1 b - - 0 27","m":"d8d6 c5c8 d6d8 c8d8","r":420,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"hs8VG","f":"6k1/5ppp/2P1p3/4P3/2r5/5N1P/r5P1/1R4K1 b - - 0 27","m":"c4c6 b1b8 c6c8 b8c8","r":401,"t":"backRankMate endgame mate mateIn2 short"},{"i":"huKGC","f":"4r1k1/pp2Bppp/4p3/3pP3/3P4/P2b1N2/1P3PPP/2R3K1 b - - 0 21","m":"e8e7 c1c8 e7e8 c8e8","r":547,"t":"backRankMate endgame mate mateIn2 short"},{"i":"i08ly","f":"2r3k1/5p2/p5pp/1p6/1P2P3/P2q1P2/6PP/3R3K w - - 0 35","m":"d1d3 c8c1 d3d1 c1d1","r":427,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"i0puS","f":"1r1r2k1/p4ppp/6q1/2pp4/4P3/2P2P2/PP1Q2PP/3R1RK1 b - - 0 19","m":"d5e4 d2d8 b8d8 d1d8","r":531,"t":"backRankMate endgame mate mateIn2 short"},{"i":"i4Zd6","f":"6Q1/6p1/4prkp/8/p7/P7/5rPP/3q2RK w - - 0 38","m":"g1d1 f2f1 d1f1 f6f1","r":539,"t":"backRankMate endgame master mate mateIn2 queenRookEndgame short"},{"i":"i4xPb","f":"6k1/4np2/4p1p1/P3P1Np/P1r5/3p4/3R1PPP/6K1 w - - 0 31","m":"d2d3 c4c1 d3d1 c1d1","r":496,"t":"backRankMate endgame mate mateIn2 short"},{"i":"i57Hd","f":"4r2k/4r1pp/8/p1p5/Pp3p1Q/1P3P2/2bR2PP/R3q2K w - - 1 40","m":"h4e1 e7e1 a1e1 e8e1","r":400,"t":"backRankMate endgame mate mateIn2 short"},{"i":"i6kA1","f":"4r3/6pk/p6p/1p3q2/8/2P5/PP4PP/5R1K w - - 0 30","m":"f1f5 e8e1 f5f1 e1f1","r":479,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"i7yGb","f":"r2r2k1/1pp1Qpp1/p6p/8/8/7R/PP3PPP/2Rq2K1 w - - 1 24","m":"c1d1 d8d1 e7e1 d1e1","r":418,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"iGyZz","f":"4r3/1p3nk1/3pr1p1/5q2/p4P1p/3Q2R1/P1P3PP/3R3K w - - 0 32","m":"d3f5 e6e1 d1e1 e8e1","r":425,"t":"backRankMate endgame mate mateIn2 short"},{"i":"iIAEI","f":"r5k1/1p3ppp/p1p5/6q1/4PPn1/2NQ2K1/PP4P1/3R4 b - - 0 20","m":"g5g6 d3d8 a8d8 d1d8","r":497,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"iITBN","f":"4r2k/p4qbp/2p4p/3p1p2/Q7/2N5/PPP3PP/4R2K w - - 0 22","m":"a4c6 e8e1","r":585,"t":"backRankMate endgame hangingPiece mate mateIn1 oneMove"},{"i":"iOKy6","f":"1R2nr1k/p4Qpp/q7/8/8/7P/5PP1/1R5K b - - 0 34","m":"f8f7 b8e8 f7f8 e8f8","r":532,"t":"backRankMate endgame hangingPiece mate mateIn2 short"},{"i":"iPLwY","f":"4rQ1k/2p3pp/p7/3P4/1p4qn/2N5/PPP3PP/5R1K b - - 2 25","m":"e8f8 f1f8","r":403,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"iRDHJ","f":"1r1k3r/R4ppp/2nNp3/2QpPn2/3P4/5N2/2P2PPP/6K1 w - - 1 21","m":"c5c6 b8b1 f3e1 b1e1","r":524,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"iRoLh","f":"1R6/5pkr/3p1pnp/p1rB1P1Q/q1P3R1/8/P4PPP/6K1 w - - 6 28","m":"d5f7 a4d1","r":498,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"iSuCZ","f":"4rQ1k/p5pp/1p6/8/8/P1P1q3/1P4PP/3R1R1K b - - 2 26","m":"e8f8 f1f8","r":504,"t":"backRankMate endgame mate mateIn1 oneMove queenRookEndgame"},{"i":"iZvrn","f":"2rr3k/1p5p/p2p1ppP/3P4/5P2/6Q1/PPq2PR1/K5R1 w - - 3 32","m":"f2f3 c2c1 g1c1 c8c1","r":521,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"ichkr","f":"4r3/2nk4/2p5/1p1p4/p1pQ4/8/PP6/K3qR2 w - - 4 44","m":"f1e1 e8e1 d4d1 e1d1","r":524,"t":"backRankMate endgame mate mateIn2 short"},{"i":"if8XG","f":"5Q1k/1pp3pp/p2b4/6q1/1P6/P3r1P1/2P2R1P/R5K1 b - - 2 29","m":"d6f8 f2f8","r":506,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ilBF1","f":"6k1/5ppb/4p2p/3pP3/p1nP1K1P/6P1/2n2P2/1R6 b - - 3 42","m":"a4a3 b1b8","r":447,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ioNV6","f":"6k1/2p2ppp/2P5/r7/8/5P2/3r2PP/3R3K w - - 0 29","m":"d1d2 a5a1 d2d1 a1d1","r":419,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"ipkga","f":"2R5/5p1k/5Ppp/3p4/1p4q1/1P6/6PP/3R3K w - - 4 39","m":"c8c2 g4d1","r":568,"t":"backRankMate endgame hangingPiece master mate mateIn1 oneMove queenRookEndgame"},{"i":"itHab","f":"2k2r2/pbppn1pr/1p1N4/4b2p/4P3/5Q2/P1P2PPP/1R3RK1 b - - 2 19","m":"e5d6 f3f8","r":434,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"iwjYj","f":"4r1k1/pb5p/5pp1/2p5/2Pp4/1P1P1P1Q/P5PP/R3q2K w - - 3 27","m":"a1e1 e8e1","r":575,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"ixCvR","f":"3Qr1k1/1p3pp1/p3q2p/5b2/8/8/PBPR1PPP/3R2K1 w - - 1 20","m":"d8d4 e6e1 d1e1 e8e1","r":577,"t":"backRankMate mate mateIn2 middlegame sacrifice short"},{"i":"j0IxQ","f":"3r2k1/1p3ppp/4p3/p7/5P2/PQ3R2/1P4PP/3q3K w - - 2 28","m":"b3d1 d8d1 f3f1 d1f1","r":448,"t":"backRankMate endgame mate mateIn2 short"},{"i":"j9elT","f":"5rk1/5rpp/p3p3/4P3/1P1pN3/3Q4/2P3PP/3R1q1K w - - 1 31","m":"d1f1 f7f1 d3f1 f8f1","r":488,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jB379","f":"6k1/5ppp/R3pq2/8/1P1Q4/8/5PP1/7K b - - 0 28","m":"f6d4 a6a8 d4d8 a8d8","r":524,"t":"backRankMate endgame mate mateIn2 queenRookEndgame short"},{"i":"jDCFW","f":"r1b3k1/p1p1rppp/1np5/4P3/8/2N5/PP2BPPP/2KR3R b - - 1 16","m":"e7e5 d1d8 e5e8 d8e8","r":493,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"jKl5z","f":"2r3k1/5ppp/2q1p3/p3P3/Pp1Q4/1P3P2/2R3PP/3R3K b - - 0 31","m":"c6c2 d4d8 c8d8 d1d8","r":532,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"jMZwI","f":"2r3k1/4b1p1/p3Pp1p/1p6/8/P7/1q1RQ1PP/7K w - - 0 32","m":"d2b2 c8c1 e2d1 c1d1","r":513,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jSc5u","f":"6k1/1p3ppp/8/p7/1n6/1N2P2P/PPbrBKP1/2R5 b - - 2 23","m":"c2b3 c1c8 d2d8 c8d8","r":433,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jZCLN","f":"8/1p6/p4kp1/7p/8/2rr1N1R/P4PPP/2R3K1 w - - 0 31","m":"c1c3 d3d1 f3e1 d1e1","r":484,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jZcJO","f":"3r3r/8/1R1pk1p1/p2Rp3/1p2P3/5P2/PPP3P1/2K5 w - - 4 26","m":"c1b1 h8h1 d5d1 h1d1","r":592,"t":"backRankMate endgame mate mateIn2 rookEndgame short"},{"i":"jbiDv","f":"6k1/R4pp1/2p1p1bp/2NpPn2/3r4/6N1/5PPP/6K1 w - - 4 26","m":"g3f5 d4d1","r":503,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"je9GX","f":"3r2k1/pp3pn1/4p3/2b1P2Q/3r4/P5R1/1P4PP/R6K w - - 1 28","m":"h5h6 d4d1 a1d1 d8d1","r":554,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"jg5oC","f":"6k1/p4ppp/2p5/2pp4/6b1/2bP1N1P/P1P1rPP1/1R3NK1 b - - 0 18","m":"g4f3 b1b8 e2e8 b8e8","r":570,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jnM6f","f":"6k1/pppr2p1/3qP1pp/8/2p2PP1/5Q1P/PPP2B2/1K4R1 w - - 2 28","m":"f3b7 d6d1 g1d1 d7d1","r":463,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"jnNC6","f":"6k1/7p/4p1p1/p2r2P1/1p6/8/PP6/K1Qq4 w - - 2 41","m":"c1d1 d5d1","r":434,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"jqgCj","f":"4r1k1/6pp/p7/1p6/2b5/5PQ1/5NPP/3Rq1K1 w - - 1 33","m":"d1e1 e8e1","r":499,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"jueyB","f":"r3r1k1/1p3ppp/p3p1b1/3P3n/1nBP3q/P1N1Q2P/1P3PP1/2R1R1K1 b - - 0 19","m":"e6d5 e3e8 a8e8 e1e8","r":409,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"jukeP","f":"5rk1/5ppp/p3b3/1pr5/8/5PP1/P2RBK1P/3R4 b - - 1 29","m":"f8c8 d2d8 c8d8 d1d8","r":408,"t":"backRankMate endgame mate mateIn2 short"},{"i":"jx0MC","f":"r3r1k1/3qQppp/p1p2n2/2pp4/8/3P4/PPP2PPP/RNB1R1K1 w - - 1 14","m":"e7d7 e8e1","r":567,"t":"backRankMate hangingPiece mate mateIn1 middlegame oneMove"},{"i":"jxZHx","f":"1k2R2r/ppp2Q2/1b6/1P4p1/2P3Bn/6qP/P4PP1/5RK1 b - - 1 27","m":"h8e8 f7e8","r":466,"t":"backRankMate mate mateIn1 middlegame oneMove"},{"i":"jySNW","f":"8/7p/2k1r3/BR4p1/P7/2P5/1P3PPP/6K1 w - - 0 38","m":"a5b4 e6e1","r":492,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"jzAEL","f":"r6k/p3brpp/5p2/2pN4/3p4/2Pb4/PP1B2PP/R3R1K1 b - - 3 24","m":"e7d8 e1e8 f7f8 e8f8","r":452,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"jzXPf","f":"4r1k1/p1Nn2pp/1p4p1/1q2r3/1P6/P7/2Q2PPP/3RR1K1 w - - 0 28","m":"c7b5 e5e1 d1e1 e8e1","r":402,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"k1gLt","f":"3rQ1k1/1p3ppp/p2B4/2P5/8/2P4P/P1q2PP1/4R1K1 b - - 2 30","m":"d8e8 e1e8","r":567,"t":"backRankMate endgame mate mateIn1 oneMove"},{"i":"k4g4p","f":"6k1/p1r2ppp/1p6/3p4/2Q5/7P/1P3PP1/4RK2 b - - 0 27","m":"d5c4 e1e8","r":400,"t":"backRankMate endgame mate mateIn1 oneMove rookEndgame"}] |