| [{"i":"cpg2A","f":"3r2k1/p4Ppp/1p6/4R3/4Q3/1P5P/q4PPK/3r4 b - - 0 27","m":"g8f7 e4f5 f7g8 f5e6 g8h8 e6e8 d8e8 e5e8","r":2344,"t":"backRankMate endgame mate mateIn4 sacrifice veryLong"},{"i":"PkrSD","f":"r3kb1r/1pp2ppp/p7/3QN1n1/6P1/2q4P/P1P2P2/1K1RR3 b kq - 3 23","m":"f8e7 d5d7 e8f8 d7d8 a8d8 d1d8 e7d8 e5d7 f8g8 e1e8","r":2336,"t":"backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"zg0w4","f":"r5k1/BR4pp/2p5/4b3/Q7/p5PP/5P1K/4q3 b - - 0 37","m":"a8a7 a4b3 g8h8 b7b8 e5b8 b3b8 e1e8 b8e8","r":2246,"t":"backRankMate endgame mate mateIn4 sacrifice veryLong"},{"i":"oVnMA","f":"5rk1/5Ppp/5r2/1p6/p7/P1p2Q2/1q4PP/4RR1K b - - 0 33","m":"f8f7 e1e8 f7f8 f3d5 g8h8 e8f8 f6f8 f1f8","r":2208,"t":"backRankMate deflection endgame mate mateIn4 veryLong xRayAttack"},{"i":"nYqvN","f":"r1b3k1/1p2bppp/p1n1q3/6r1/8/1P1Q4/PB3PPP/3RR1K1 b - - 3 19","m":"e6g6 d3d8 c6d8 d1d8 e7f8 d8f8 g8f8 b2a3 g5c5 a3c5 g6d6 c5d6 f8g8 e1e8","r":2210,"t":"attraction backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"tMA2Y","f":"r5k1/p3R1pp/1p3p2/2pp1r2/3B2qP/P1P1Q3/2P3P1/R5K1 b - - 2 27","m":"c5d4 e3e6 g8h8 e7e8 a8e8 e6e8","r":2289,"t":"backRankMate endgame long mate mateIn3"},{"i":"zSX6L","f":"2r1r3/1p4pp/p4pk1/7P/PB1QpqP1/1P3b2/5P2/4R1K1 b - - 0 30","m":"g6f7 d4d5 e8e6 d5d7 e6e7 d7e7 f7g8 e7e6 g8h8 e6c8","r":2210,"t":"backRankMate fork mate mateIn5 middlegame veryLong"},{"i":"NFfs7","f":"r3rk2/pp3ppp/6q1/2NP2Bn/Q1P2p2/7P/PP4P1/R3R1K1 b - - 0 23","m":"g6g5 a4e8 a8e8 c5d7 f8g8 e1e8","r":2225,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"OiFeW","f":"2kr1R2/p1p3pp/2p5/4P3/3P4/PQP1q3/P4nPP/1R5K w - - 1 24","m":"h1g1 f2d1 f8f2 e3f2 g1h1 f2e1","r":2336,"t":"backRankMate discoveredAttack endgame long mate mateIn3"},{"i":"dH2Zz","f":"4k3/2p1rr2/4p3/3pR2Q/3P1qp1/8/P4PPP/4R1K1 w - - 1 38","m":"e5e6 f4f2 g1h1 f2e1 e6e1 e7e1","r":2296,"t":"backRankMate endgame long mate mateIn3 xRayAttack"},{"i":"RaCgU","f":"2kr2r1/pp2Rp1Q/2p5/8/q7/3p2PP/1PnB1P2/5K2 b - - 3 23","m":"d8e8 h7f5 c8b8 f5e5 b8a8 e7e8 g8e8 e5e8","r":2215,"t":"backRankMate mate mateIn4 middlegame veryLong"},{"i":"GPHxY","f":"1qR1nrk1/5ppp/1b1p4/1b1P1N2/1P2PP2/6QP/6B1/7K b - - 1 29","m":"b8a7 g3g7 e8g7 f5h6 g8h8 c8f8","r":2343,"t":"backRankMate deflection long master mate mateIn3 middlegame sacrifice"},{"i":"TZ7Fh","f":"r3k2r/1pp1ppb1/pnn5/5Q1p/8/2P2N1P/1P3PPB/qNKRR3 b kq - 2 19","m":"b6c4 e1e7 c6e7 f5d7 e8f8 d7d8 a8d8 d1d8","r":2281,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"xkzN9","f":"2r5/2q3k1/5bp1/p4b2/4p3/3N1QR1/PPr5/1KB4R w - - 0 35","m":"f3f5 c2b2 c1b2 c7c2 b1a1 f6b2 d3b2 c2c1 h1c1 c8c1","r":2277,"t":"backRankMate clearance mate mateIn5 middlegame sacrifice veryLong"},{"i":"YUcoA","f":"2kr1b1N/pp4p1/2p4p/8/2Pnn3/N7/PPP2PPP/R1B2RK1 w - - 0 17","m":"b2b3 d4e2 g1h1 e4f2 f1f2 d8d1 f2f1 d1f1","r":2235,"t":"backRankMate deflection mate mateIn4 middlegame sacrifice veryLong"},{"i":"nLhRO","f":"1k6/1p2Q2p/pNb5/4P3/q2p4/4P3/PP3rP1/1KR2B2 w - - 0 35","m":"e3d4 a4c2 c1c2 f2f1 c2c1 c6e4 b1a1 f1c1","r":2230,"t":"backRankMate deflection mate mateIn4 middlegame sacrifice veryLong"},{"i":"gMDof","f":"2r4k/3n1Qbp/1q4p1/p1R5/1p1Np3/1P2P3/PB4PP/5RK1 b - - 0 28","m":"d7c5 d4e6 c5e6 b2g7 e6g7 f7f8 c8f8 f1f8","r":2346,"t":"backRankMate discoveredAttack mate mateIn4 middlegame sacrifice veryLong"},{"i":"2jzHy","f":"3rr1k1/p4ppp/8/1P3Q2/q7/3N4/PP1B1PPP/RN2K2R w KQ - 5 21","m":"e1f1 a4d1 d3e1 d1e2 f1g1 e2e1 d2e1 e8e1","r":2202,"t":"backRankMate deflection mate mateIn4 middlegame sacrifice veryLong"},{"i":"xsJtr","f":"5r1k/ppp1q1p1/6Qp/6b1/8/1PBP4/1PP3PP/5RK1 w - - 1 22","m":"f1e1 e7e3 e1e3 g5e3 g1h1 f8f1","r":2308,"t":"backRankMate collinearMove endgame long mate mateIn3 sacrifice"},{"i":"O2ox1","f":"6k1/2PNbppp/8/BN6/P2Pnn2/5P2/2r3PP/5RK1 w - - 1 29","m":"d7b6 f4e2 g1h1 e4f2 f1f2 c2c1 a5e1 c1e1 f2f1 e1f1","r":2276,"t":"backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"AFBX1","f":"3r1k2/p5bQ/3N4/1pp1P1Np/5nq1/8/PPP3P1/2K2R2 w - - 5 30","m":"d6f5 g4d1 f1d1 f4e2 c1b1 d8d1","r":2219,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"d74w1","f":"5rk1/2R3pp/p2N1p2/n2p1N2/8/1p4BP/5PPK/q7 b - - 1 36","m":"b3b2 f5e7 g8h8 d6f7 f8f7 c7c8 f7f8 c8f8","r":2304,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"jnQjs","f":"4Qrk1/pp4p1/8/3r4/4p1P1/8/PPP1Bq2/R1K4R w - - 2 28","m":"e8g6 f2f4 c1b1 f4f1 h1f1 f8f1 e2d1 f1d1","r":2310,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"oIt2U","f":"r3r1k1/3b1p1p/5Q2/5P1P/p2p4/P2B4/1qP5/3K2R1 b - - 5 30","m":"g8f8 f6d6 e8e7 d6h6 f8e8 g1g8","r":2248,"t":"backRankMate fork long mate mateIn3 middlegame"},{"i":"BWB2K","f":"3Rnrk1/1p3ppp/2p5/5NQ1/8/1b4P1/5P1P/4qBK1 b - - 5 28","m":"b3c4 g5g7 e8g7 f5h6 g8h8 d8f8","r":2250,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"UsVRf","f":"2rr2k1/5ppp/ppqBp3/2Pb4/5QP1/7P/PP6/2R2RK1 b - - 1 25","m":"b6c5 f4f7 g8h8 d6f8 d8f8 f7f8 c8f8 f1f8","r":2370,"t":"backRankMate mate mateIn4 middlegame veryLong"},{"i":"HPczy","f":"1k1r3r/p4BR1/2p4p/4p3/4Pn1n/2N1Qq2/PPP5/2KR4 w - - 0 25","m":"e3c5 f3d1 c3d1 f4e2 c1b1 d8d1","r":2280,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"ygZg7","f":"k2rr3/pp3Rpp/2p5/5Q2/1b1qNB2/8/PP4PP/R6K w - - 9 20","m":"e4c3 d4d1 a1d1 d8d1 c3d1 e8e1","r":2203,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"OAxbA","f":"2b2rk1/2R1Q1pp/4p3/5p2/1p3q2/7P/B2r2P1/4R2K b - - 5 35","m":"f4g3 e7f7 f8f7 c7c8 d2d8 c8d8 f7f8 a2e6 g8h8 d8f8","r":2313,"t":"backRankMate deflection mate mateIn5 middlegame sacrifice veryLong"},{"i":"G6AMU","f":"4r2k/pR2P1pp/8/1B3p2/Q2n1q2/8/P1r2PPP/5RK1 w - - 0 23","m":"b5e8 d4e2 g1h1 f4f2 f1f2 c2c1 a4d1 c1d1 f2f1 d1f1","r":2359,"t":"backRankMate deflection mate mateIn5 middlegame sacrifice veryLong"},{"i":"k7XO7","f":"2r2k2/4Q1pp/p7/1p3p2/3p4/1Pq4P/P1P5/2K1Rn2 b - - 3 32","m":"f8g8 e7e6 g8f8 e6f5 f8g8 f5e6 g8h8 e6e8 c8e8 e1e8","r":2363,"t":"backRankMate endgame fork mate mateIn5 sacrifice veryLong"},{"i":"kl1aP","f":"2r2rk1/1b4pp/p3Q3/4N3/2Pp4/1Pn5/q4PPP/2R1R1K1 b - - 3 28","m":"g8h8 e5f7 f8f7 e6c8 b7c8 e1e8 f7f8 e8f8","r":2346,"t":"backRankMate clearance deflection fork mate mateIn4 middlegame sacrifice veryLong"},{"i":"YUyat","f":"6k1/6pp/Q1p1R3/3p3b/3P4/5r2/PPP1K1qP/4R3 w - - 2 33","m":"e2d1 f3d3 d1c1 g2d2 c1b1 d2d1 e1d1 d3d1","r":2235,"t":"backRankMate doubleCheck endgame mate mateIn4 sacrifice veryLong"},{"i":"76dkM","f":"5rk1/1p3Ppp/p7/3R2b1/8/3Q4/Pq1r1PPP/4R1K1 b - - 0 23","m":"f8f7 d5d8 g5d8 e1e8 f7f8 d3c4 d2d5 c4d5 g8h8 e8f8","r":2323,"t":"backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"fJnu8","f":"r2q3k/ppp2Qpp/2n1P1p1/5b2/3P4/B1P5/P1P3PP/5RK1 b - - 0 18","m":"f5c2 a3f8 d8f8 f7f8 a8f8 f1f8","r":2265,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"l2lne","f":"1nkr4/ppp2R1p/3p4/PP2p3/2B1P1p1/2P3q1/6Q1/6K1 b - - 1 26","m":"g3c3 g2g4 b8d7 g4d7 d8d7 f7f8 d7d8 c4e6 c8b8 f8d8","r":2320,"t":"backRankMate deflection endgame mate mateIn5 sacrifice veryLong"},{"i":"Bc9kz","f":"r5k1/pp4pp/3Q2p1/3N4/3nP1P1/8/PqP4P/5R1K b - - 0 26","m":"b2b5 d6f8 a8f8 d5e7 g8h8 f1f8","r":2274,"t":"backRankMate deflection endgame long mate mateIn3 sacrifice"},{"i":"CQ9SI","f":"5k2/pppR1ppp/8/8/1PPB4/P7/5KPP/2b1r3 b - - 0 31","m":"e1e7 d7d8 e7e8 d4c5 f8g8 d8e8","r":2205,"t":"backRankMate deflection endgame long mate mateIn3"},{"i":"n2OGH","f":"2r3k1/2RNq1pp/2Q2p2/8/3P4/4P2P/3r1PP1/6K1 b - - 0 28","m":"c8c7 c6d5 g8h8 d5a8 c7c8 a8c8 e7d8 c8d8","r":2249,"t":"backRankMate endgame mate mateIn4 veryLong"},{"i":"LULT7","f":"rr2n2k/p2nQ1pp/q7/2pPpN2/4P3/2P5/P5PP/R4RK1 b - - 1 21","m":"d7f6 e7f8 f6g8 f8g8 h8g8 f5e7 g8h8 f1f8","r":2248,"t":"attraction backRankMate master mate mateIn4 middlegame sacrifice veryLong"},{"i":"QbiGO","f":"4B3/pQ3pkp/4p1p1/3p4/3b1q2/8/P1r2PPP/4RRK1 w - - 6 26","m":"e1e3 f4f2 f1f2 c2c1 f2f1 d4e3 g1h1 c1f1","r":2330,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"Ranv1","f":"5r1k/3PN1pp/p7/4p3/1p1nP3/6Q1/P3q1PP/4R1K1 w - - 6 28","m":"g3h4 e2f1 e1f1 d4e2 g1h1 f8f1","r":2201,"t":"backRankMate deflection endgame long mate mateIn3 sacrifice"},{"i":"YHEV0","f":"5rk1/Q2R1ppp/2q1p3/8/8/6PP/Pr3R2/6K1 b - - 1 25","m":"f8a8 d7d8 a8d8 a7f7 g8h8 f7f8 d8f8 f2f8","r":2204,"t":"backRankMate discoveredAttack endgame mate mateIn4 sacrifice veryLong"},{"i":"fPlAU","f":"8/6pk/3Q1p1p/p2Pp3/2q1P3/P4P2/2r3PP/1R4K1 w - - 2 30","m":"d6e6 c4c5 g1h1 c2c1 b1c1 c5c1","r":2237,"t":"backRankMate endgame long mate mateIn3"},{"i":"TM1z4","f":"5r2/pp6/1k5p/8/3Q2B1/6PK/q4r1P/5R2 b - - 3 39","m":"b6c7 d4c5 c7b8 c5d6 b8a8 d6f8 f2f8 f1f8","r":2202,"t":"backRankMate endgame mate mateIn4 veryLong xRayAttack"},{"i":"zktIt","f":"5nk1/p1qbrp2/7Q/2pp2N1/8/6R1/PPP3PP/6K1 b - - 6 27","m":"f8g6 h6h7 g8f8 h7h8 g6h8 g5h7 f8e8 g3g8","r":2331,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"8T8Jo","f":"r6k/1b3Rpp/p1q1n3/1p2P3/5N2/P5Q1/1PPr2PP/R6K b - - 3 24","m":"a8f8 g3g7 e6g7 f7f8","r":2225,"t":"backRankMate deflection mate mateIn2 middlegame sacrifice short"},{"i":"krFv2","f":"3r1r1k/4N1p1/p2Q3p/1p6/8/8/PPq2PPP/3R1RK1 w - - 7 31","m":"d6a3 c2f2 g1h1 f2f1 d1f1 f8f1","r":2208,"t":"backRankMate deflection long mate mateIn3 middlegame"},{"i":"LMxBJ","f":"r6r/2Q1kppp/4p3/8/3PP3/5P2/1P1q1P1P/1KR5 b - - 2 26","m":"e7f6 c7e5 f6e7 c1c7 e7e8 e5b5 e8f8 b5c5 f8g8 c7c8 a8c8 c5c8","r":2262,"t":"backRankMate endgame mate mateIn5 veryLong"},{"i":"NpQAF","f":"5rk1/1p1R1ppp/2p1pb2/p1P5/Pq6/1B3Q1P/1P3PP1/6K1 b - - 1 22","m":"f6b2 f3f7 f8f7 d7d8 f7f8 b3e6 g8h8 d8f8","r":2219,"t":"backRankMate deflection endgame mate mateIn4 sacrifice veryLong"},{"i":"2xYdM","f":"2k3r1/pp2R3/2p2Q2/3p4/1P1P3n/2NK1P2/P1P3q1/R5r1 b - - 2 31","m":"g1a1 f6e6 c8b8 e6e5 b8a8 e7e8 g8e8 e5e8","r":2324,"t":"backRankMate master mate mateIn4 middlegame veryLong"},{"i":"6hv5P","f":"1r5k/1P4pp/2q4b/p3Q3/P2p1P1P/4p1PK/8/1R6 b - - 5 44","m":"b8b7 e5b8 b7b8 b1b8 c6c8 b8c8","r":2240,"t":"backRankMate endgame long mate mateIn3 sacrifice xRayAttack"},{"i":"KvvV4","f":"1q4k1/1b2r1pp/1p6/p4Q2/3p1R2/2P1p2P/PP5K/5R2 b - - 1 38","m":"e7e8 f5f7 g8h8 f7e8 b8e8 f4f8 e8f8 f1f8","r":2382,"t":"backRankMate clearance endgame fork mate mateIn4 sacrifice veryLong"},{"i":"Sx6ZG","f":"3r1r1k/4R1pp/8/8/Q7/2n3B1/P3qPPP/5RK1 w - - 3 29","m":"a4a7 d8d1 e7e2 c3e2 g1h1 d1f1","r":2322,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"4HLyi","f":"r3b1k1/p5pp/2p1n1r1/5Bq1/3P4/5Q2/PPP3PP/4RR1K b - - 0 23","m":"e6d4 e1e8 a8e8 f5e6 d4e6 f3f7 g8h8 f7e8 e6f8 f1f8","r":2306,"t":"backRankMate clearance fork mate mateIn5 middlegame sacrifice veryLong"},{"i":"JPXmX","f":"1Q6/pb1k1q2/1p1Bp3/2p3P1/2P5/8/PP1pnPP1/1K1R4 w - - 8 40","m":"d1d2 f7h7 g5g6 b7e4 b1a1 h7h1 d2d1 h1d1","r":2288,"t":"backRankMate endgame mate mateIn4 veryLong"},{"i":"Xn2z1","f":"3r2k1/p3R1pp/1p3p2/1P6/2P5/P2q1bPP/3B1P1K/4Q3 b - - 6 33","m":"d3d2 e1e6 g8h8 e7e8 d8e8 e6e8","r":2206,"t":"backRankMate endgame long master mate mateIn3"},{"i":"kaiJd","f":"2r2r2/pp3pk1/4b1p1/2qpNn2/5P2/3Q1R2/PP1B2PP/R6K w - - 2 20","m":"a1c1 f5g3 f3g3 c5c1 d2c1 c8c1 d3d1 c1d1","r":2241,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"HUXpx","f":"2r3k1/1p3ppp/p5n1/5N2/1B1p1bQ1/P6P/1Pq3P1/4R2K b - - 2 25","m":"c2b2 f5e7 g6e7 g4c8 e7c8 e1e8","r":2380,"t":"backRankMate discoveredAttack fork long mate mateIn3 middlegame sacrifice"},{"i":"q2EZE","f":"2r2r1k/pp3ppp/8/3p4/Q2pn3/2B1q3/PP2P1PP/1K1R1B1R w - - 0 17","m":"c3d4 e3c1 d1c1 e4d2 b1a1 c8c1","r":2263,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"KqnMR","f":"5r1k/pQp3pp/8/8/3R4/P1P2P2/1P2rRPP/2q3K1 w - - 5 27","m":"f2f1 c1e3 g1h1 e3f2 f1f2 e2e1 f2f1 e1f1","r":2357,"t":"backRankMate endgame mate mateIn4 sacrifice veryLong"},{"i":"uTbfL","f":"3r1rk1/1p3Rpp/p3p1n1/4q3/b1BN4/6P1/P4Q1P/5R1K b - - 0 23","m":"e5d4 f7f8 g6f8 f2f7 g8h8 f7f8 d8f8 f1f8","r":2382,"t":"backRankMate clearance deflection mate mateIn4 middlegame pin veryLong"},{"i":"dQE7P","f":"4r2k/1p4pp/p7/1b1Q4/4N3/qP3P2/P2R2PP/6K1 w - - 3 34","m":"e4g5 a3c1 d2d1 c1e3 g1h1 e3e1 d1e1 e8e1","r":2275,"t":"backRankMate endgame mate mateIn4 sacrifice veryLong"},{"i":"PHKi3","f":"r5k1/6pp/p2Q2n1/1p1N3q/6n1/8/PPP3PP/5R1K b - - 0 25","m":"g6e5 d6f8 a8f8 d5e7 g8h8 f1f8","r":2362,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"NNaDi","f":"2Q5/5rbk/p2pn1p1/6P1/1q2P3/2N5/1PP3PP/3R2K1 w - - 0 27","m":"c8e6 b4d4 d1d4 g7d4 g1h1 f7f1","r":2202,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"kKys0","f":"r1b1r3/pp3k2/2pQ3p/5p2/2P2pn1/4q1B1/PP4PP/1BR2R1K w - - 0 24","m":"g3f4 g4f2 f1f2 e3c1 f4c1 e8e1 f2f1 e1f1","r":2315,"t":"backRankMate clearance deflection fork mate mateIn4 middlegame sacrifice veryLong"},{"i":"WhsO7","f":"3B3k/6pp/p5b1/2pBp3/3qPn1P/1Q6/PP6/2K2R2 w - - 3 34","m":"b3b8 d4e3 c1b1 e3d3 b1a1 d3f1","r":2290,"t":"backRankMate fork long mate mateIn3 middlegame"},{"i":"5H0cH","f":"6k1/2qp1ppp/3nr3/1ppQ4/p4B2/P2P4/1PP2KPP/4R3 b - - 5 22","m":"e6f6 d5a8 c7c8 a8c8 d6c8 e1e8","r":2240,"t":"backRankMate endgame long mate mateIn3"},{"i":"IOQPb","f":"5rk1/5ppp/4p3/p2NNn2/1p3R2/4Q2P/PP3PPK/2r5 b - - 0 29","m":"f5e3 d5e7 g8h8 e5g6 f7g6 f4f8","r":2249,"t":"backRankMate endgame long mate mateIn3"},{"i":"Lp08K","f":"2r4k/p1r3pp/b3Q3/2ppN3/5P2/q1P3P1/2PK3P/3RR3 b - - 1 27","m":"d5d4 e5f7 c7f7 e6c8 a6c8 e1e8 f7f8 e8f8","r":2237,"t":"backRankMate clearance deflection fork mate mateIn4 middlegame sacrifice veryLong"},{"i":"uF0Nn","f":"3k3r/ppp3R1/8/3Pp3/q1P1P3/P7/1P6/1K4Q1 b - - 2 35","m":"a4c4 g1g5 d8c8 g5g4 c8b8 g7g8 h8g8 g4g8","r":2224,"t":"backRankMate endgame mate mateIn4 veryLong"},{"i":"WzfGJ","f":"r5k1/p1p3pp/2N3r1/3p4/3Pq3/7P/P2B1P1P/2Q1R1K1 w - - 3 21","m":"g1f1 e4d3 e1e2 d3h3 f1e1 g6g1","r":2274,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"L4Fwp","f":"r2k3r/pppn1Q2/7p/3Nb1p1/4qp2/1P5P/P1P3PK/R2R4 b - - 0 20","m":"h8f8 f7e7 d8c8 e7f8 d7f8 d5e7 c8b8 d1d8","r":2308,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"2pEgX","f":"6k1/p1p3pp/1n4q1/8/6n1/2PpQ3/PP4PP/RN5K w - - 1 23","m":"e3f3 g6h6 f3g4 h6c1 g4d1 c1d1","r":2270,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"ba1E1","f":"3r2k1/rpR3pp/p7/P4p1Q/8/5pP1/3q1P1P/5BK1 b - - 0 31","m":"d8f8 h5f7 f8f7 c7c8 f7f8 f1c4 d2d5 c4d5 g8h8 c8f8","r":2206,"t":"backRankMate endgame mate mateIn5 sacrifice veryLong"},{"i":"pQnSP","f":"1rb2rk1/2R2ppp/pq6/3B4/1p3Q2/P7/1PP2PPP/2KR4 b - - 0 20","m":"b4a3 f4f7 f8f7 d5f7 g8h8 d1d8","r":2203,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"Zh0ey","f":"1R3rk1/3R1ppp/p3p3/3Nbn2/8/P2Q1B2/5qPP/7K b - - 0 25","m":"f8b8 d7d8 b8d8 d5e7 f5e7 d3d8","r":2378,"t":"backRankMate discoveredAttack long mate mateIn3 middlegame sacrifice"},{"i":"yWM17","f":"2krr3/2pq1pp1/1p6/p1p4p/4n3/6QP/PPP1BPPB/R3K2R w KQ - 0 19","m":"g3f3 d7d2 e1f1 d2d1 a1d1 d8d1 e2d1 e4d2 f1g1 e8e1","r":2228,"t":"backRankMate fork mate mateIn5 middlegame sacrifice veryLong"},{"i":"1a4D8","f":"4R3/1Q3ppk/p6p/8/4N1q1/8/PP3PP1/3r2NK w - - 1 37","m":"b7b8 g4h5 b8h2 d1g1 h1g1 h5d1","r":2233,"t":"attraction backRankMate endgame long mate mateIn3 pin sacrifice"},{"i":"oq7MJ","f":"7k/4b2p/4Q1p1/1P2N3/4P2q/8/2r3PP/5RK1 w - - 5 41","m":"e5f3 h4f2 f1f2 c2c1 f3e1 c1e1 f2f1 e7c5 g1h1 e1f1","r":2276,"t":"backRankMate deflection endgame master mate mateIn5 sacrifice veryLong"},{"i":"zyWOC","f":"4rk2/1p1b1p1p/pQ6/3p1p2/5P2/2rB2R1/q5PP/1R4K1 b - - 5 27","m":"c3d3 b6d6 e8e7 d6h6 f8e8 g3g8","r":2284,"t":"backRankMate fork long mate mateIn3 middlegame"},{"i":"THn7q","f":"4r1k1/p2Q1R1p/1p4p1/2p1qn2/2P1N2P/8/PP2n1P1/5R1K b - - 11 27","m":"e5e4 f7g7 f5g7 d7f7 g8h8 f7f8 e8f8 f1f8","r":2283,"t":"backRankMate clearance mate mateIn4 middlegame sacrifice veryLong"},{"i":"E6sa5","f":"r1b1kq2/pppp3p/6p1/2b1N2Q/2B5/8/PPPP1nPP/RNB2RK1 w q - 0 11","m":"h5h7 f2d3 f1f2 f8f2 g1h1 f2e1","r":2297,"t":"backRankMate discoveredAttack discoveredCheck long mate mateIn3 opening"},{"i":"dvkD6","f":"2r5/1q4Pk/1p5p/3Q3N/3nn3/Pp6/1P3rPP/2RR2K1 w - - 0 28","m":"d5b7 d4e2 g1h1 f2f1 d1f1 e4f2 f1f2 c8c1 f2f1 c1f1","r":2237,"t":"backRankMate deflection fork mate mateIn5 middlegame sacrifice veryLong"},{"i":"TdH3X","f":"6k1/pp3ppp/4pP2/8/2P1p3/4Q2P/Pq1rBP2/5RK1 b - - 0 21","m":"d2e2 e3g3 b2f6 g3b8 f6d8 b8d8","r":2342,"t":"backRankMate endgame long mate mateIn3 pin"},{"i":"BtVKY","f":"4r1k1/6pp/p3pn2/1pB1Q3/1P6/5bPq/3R4/1B4K1 b - - 1 30","m":"f6g4 e5e6 e8e6 d2d8 e6e8 b1a2 f3d5 a2d5 g8h8 d8e8","r":2296,"t":"backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"g8E6h","f":"2r2rk1/5ppp/p7/1pq4P/4PpP1/3PbQ1N/PP6/1K1R3R w - - 5 31","m":"h3f4 c5c2 b1a1 e3c1 d1c1 c2c1 h1c1 c8c1","r":2237,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"WS38i","f":"r4rk1/pp4pp/2b5/3Np2q/1Q1pP3/P6P/1P1B1nP1/R4RK1 b - - 3 22","m":"f2e4 b4f8 a8f8 d5e7 g8h8 f1f8","r":2361,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"QmQmG","f":"2kr4/ppp2p1q/6r1/2QNP3/3n4/5n2/PPP2R2/2KR4 b - - 3 26","m":"d4e6 c5c7 e6c7 d5e7 c8b8 d1d8","r":2367,"t":"backRankMate deflection discoveredAttack fork long mate mateIn3 middlegame sacrifice"},{"i":"xP84q","f":"1k1q3r/pp2b3/5N2/3pPQ2/7r/1P5P/P5K1/2R3N1 b - - 0 32","m":"d8a5 f5c8 h8c8 f6d7 b8a8 c1c8","r":2284,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"UUSjK","f":"rk4N1/ppp2pPp/7q/5b2/2p5/8/PPP2PPP/3RR1K1 b - - 0 20","m":"h6g7 e1e8 f5c8 e8c8 b8c8 g8e7 c8b8 d1d8","r":2281,"t":"attraction backRankMate endgame mate mateIn4 sacrifice veryLong"},{"i":"d4pXN","f":"rn3r2/pppk1B1p/5Qp1/2q5/8/1P5P/P4PP1/3R2K1 b - - 8 21","m":"d7c8 f6e6 b8d7 e6d7 c8b8 d7d8 f8d8 d1d8","r":2273,"t":"backRankMate mate mateIn4 middlegame veryLong"},{"i":"2ufXl","f":"5rk1/p5pp/4p3/2P1P3/2qp1B2/1Rn5/PQ4PP/4R1K1 w - - 1 28","m":"f4d2 c4f1 e1f1 c3e2 g1h1 f8f1","r":2239,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"bDX3R","f":"r5k1/qbP1Rrpp/1p1n1p2/pP6/P2P4/1Q6/5PPP/R5K1 b - - 3 27","m":"a8e8 b3f7 d6f7 e7e8","r":2226,"t":"backRankMate mate mateIn2 middlegame short"},{"i":"qyskv","f":"2kr3r/Rpp1ppb1/2n4p/6p1/2P5/3bBQP1/2qN1PBP/5RK1 b - - 0 17","m":"d3f1 a7a8 c8d7 f3d5 d7e8 d5c6 b7c6 g2c6 e8f8 a8d8","r":2355,"t":"backRankMate deflection mate mateIn5 middlegame sacrifice veryLong"},{"i":"GOzq5","f":"r2q3k/1bNp1Rpp/p3n3/1p2p3/6Q1/P7/1PP3PP/5RK1 b - - 3 24","m":"d8c7 g4g7 e6g7 f7f8 a8f8 f1f8","r":2233,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"K5ETy","f":"7Q/p3kppp/4pq2/3pb3/8/2N5/P1r2PPP/R4RK1 w - - 0 18","m":"a1c1 f6f2 f1f2 c2c1 c3d1 c1d1 f2f1 e5d4 g1h1 d1f1","r":2264,"t":"backRankMate deflection fork mate mateIn5 middlegame sacrifice veryLong"},{"i":"o5zGZ","f":"r5k1/1ppqR1pp/3p4/p2P2B1/P2b4/1Q6/1P3rPP/RN4K1 w - - 0 17","m":"e7d7 f2f4 b3e3 d4e3 g1h1 f4f1","r":2386,"t":"backRankMate discoveredAttack discoveredCheck long mate mateIn3 middlegame"},{"i":"bU8vJ","f":"r3k1nr/1R2ppb1/6np/3Q4/8/q3PB2/5PP1/5RK1 b kq - 0 21","m":"a8d8 d5d7 d8d7 b7b8 d7d8 f3c6 e8f8 b8d8","r":2352,"t":"backRankMate collinearMove deflection mate mateIn4 middlegame sacrifice veryLong"},{"i":"Ob4dN","f":"1k3r2/1pp5/p6p/2bN4/P1P5/3P2PQ/4qr1P/R4R1K w - - 1 31","m":"d5f4 e2f3 h3g2 f3g2 f4g2 f2f1 a1f1 f8f1","r":2224,"t":"backRankMate mate mateIn4 middlegame veryLong"},{"i":"BG2KL","f":"5q2/p5RQ/kppp4/4p2P/4P3/1BPP4/PP2Kr2/7R w - - 0 32","m":"e2d1 f8f3 d1c1 f3e3 c1b1 e3d3 b1a1 f2f1 h1f1 d3f1 b3d1 f1d1","r":2333,"t":"backRankMate endgame exposedKing fork mate mateIn5 veryLong"},{"i":"l16uJ","f":"8/pp4k1/2p3p1/8/Q4nBP/2P5/PP1q1r2/1K4R1 w - - 7 30","m":"a4b4 d2d3 b1a1 f2f1 g1f1 d3f1 g4d1 f1d1","r":2221,"t":"backRankMate endgame mate mateIn4 veryLong"},{"i":"2GF2L","f":"8/p2RQ1pp/5r1k/1pP1p3/8/3B4/PPP3qP/1K5R w - - 0 26","m":"d3e4 g2h1 e4h1 f6f1 d7d1 f1d1","r":2242,"t":"backRankMate endgame fork long mate mateIn3 sacrifice"},{"i":"PC7VB","f":"5rkr/pp4p1/4p1Q1/3p3p/3qnN2/8/P1PB1RPP/5R1K w - - 3 31","m":"f4e6 e4f2 f1f2 d4a1 d2c1 a1c1 f2f1 f8f1","r":2366,"t":"backRankMate mate mateIn4 middlegame veryLong"},{"i":"hXmyj","f":"r5k1/pp4pp/4Q3/4R3/8/1P6/P2q1rPP/4R2K b - - 0 24","m":"g8f8 e5f5 f2f5 e6f5 f8g8 f5e6 g8h8 e6e8 a8e8 e1e8","r":2227,"t":"backRankMate endgame mate mateIn5 sacrifice veryLong"},{"i":"gNrb7","f":"7r/R4p2/3Pp1p1/p1P1Pq1p/Qrk5/8/5PPP/R5K1 w - - 7 35","m":"a4a5 f5b1 a1b1 b4b1 a5e1 b1e1","r":2327,"t":"backRankMate endgame long mate mateIn3 sacrifice"},{"i":"i4Re7","f":"8/ppkB4/2p1P2p/6pQ/1b6/4q1N1/PPP3rP/1K1R4 w - - 0 27","m":"h5h6 e3d2 d1d2 g2g1 g3f1 g1f1 d2d1 f1d1","r":2236,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"ZD7eW","f":"3rk2r/pQp1qppp/1P3n2/8/1P1n4/P1N5/4BPPP/R1B1K2R w KQk - 1 15","m":"b6a7 e7e2 c3e2 d4c2 e1f1 d8d1","r":2336,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"pARXA","f":"1k1r3r/ppp2ppp/8/1Q2p3/2P1Pn2/1N3q2/PPP2P1P/2KR3R w - - 2 18","m":"b3c5 f3d1 h1d1 f4e2 c1b1 d8d1","r":2370,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"b2Msc","f":"2r2r1k/p4Qpp/8/8/2p1R3/2P5/Pq3PPP/4R1K1 w - - 2 24","m":"e4e8 c8e8 f7e8 b2f2 g1h1 h7h6 e8f8 f2f8","r":2258,"t":"backRankMate crushing endgame quietMove veryLong"},{"i":"KBeL6","f":"1k1r1r2/ppp1b1p1/4B2p/8/4P1nP/2P5/PP4PR/R1B3K1 w - - 5 24","m":"e6g4 d8d1 g4d1 e7c5 c1e3 c5e3 g1h1 f8f1","r":2361,"t":"backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"QxNFt","f":"5rk1/p4rp1/4Q3/3p4/5q2/1P3NR1/2P3PP/4R1K1 w - - 3 27","m":"f3e5 f4f2 g1h1 f2e1","r":2215,"t":"backRankMate fork mate mateIn2 middlegame short"},{"i":"RH3Sn","f":"r4rk1/1p1R2pp/p4p2/4b2Q/4P3/3B4/1qP3PP/5R1K b - - 1 28","m":"a8d8 h5f7 f8f7 d7d8 f7f8 d3c4 g8h8 d8f8","r":2253,"t":"backRankMate deflection mate mateIn4 middlegame sacrifice veryLong"},{"i":"TZzq9","f":"4r2k/6pp/3Q4/2p2Pp1/3b2P1/1R2p3/6KP/4r3 b - - 0 35","m":"e3e2 b3b8 e1g1 g2h3 g1g3 h2g3 e2e1q d6f8 e8f8 b8f8","r":2219,"t":"backRankMate endgame mate mateIn5 veryLong xRayAttack"},{"i":"xss9y","f":"5b1k/1R4pp/1QB1p3/4Pq2/5r2/8/3r1PPP/5RK1 w - - 10 33","m":"c6d7 f4f2 b6f2 f5f2 f1f2 d2d1 f2f1 f8c5 g1h1 d1f1","r":2237,"t":"backRankMate deflection mate mateIn5 middlegame sacrifice veryLong"},{"i":"sgTaO","f":"3rr1k1/pp3ppp/8/2b1R2n/2Bn4/2N5/PP3PPP/R1B3K1 w - - 4 17","m":"e5c5 e8e1 c4f1 d4e2 c3e2 e1f1 g1f1 d8d1","r":2239,"t":"attraction backRankMate mate mateIn4 middlegame sacrifice veryLong"},{"i":"1nx31","f":"1n1r1r1k/p5pp/3RQb2/1qp1N3/8/8/P4PPP/3R2K1 b - - 0 28","m":"d8d6 e5f7 f8f7 e6c8 f6d8 c8d8 d6d8 d1d8 b5e8 d8e8 f7f8 e8f8","r":2205,"t":"backRankMate fork mate mateIn5 middlegame sacrifice veryLong xRayAttack"},{"i":"7YZF2","f":"2q1r1k1/5ppp/2pB2n1/1p6/3P4/1Q2R3/rP4PP/5RK1 b - - 5 28","m":"e8e3 b3f7 g8h8 d6f8 c8f8 f7f8 g6f8 f1f8","r":2230,"t":"backRankMate fork mate mateIn4 middlegame veryLong"},{"i":"t7fDZ","f":"r1b3k1/p5pp/4p3/1pQNn3/7P/6q1/P1P1B1P1/5RK1 b - - 0 21","m":"c8b7 c5f8 a8f8 d5e7 g8h8 f1f8","r":2240,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"OOMxT","f":"5rk1/Q4p2/1p6/6q1/6Pp/5R2/P1r2PPB/1R4K1 w - - 1 30","m":"a7a4 g5c1 b1c1 c2c1 a4d1 c1d1","r":2216,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"o3oeF","f":"5rk1/2p2rpp/R2P4/4p3/4Pq2/PP6/4Q1PP/2R3K1 w - - 1 36","m":"e2c4 f4e3 g1h1 e3c1 c4c1 f7f1 c1f1 f8f1","r":2291,"t":"backRankMate endgame fork mate mateIn4 sacrifice veryLong"},{"i":"wVpo1","f":"6rk/pn4r1/4R2p/2pPp3/1PPq4/P6P/3N3K/1Q6 b - - 7 39","m":"g7g1 e6h6 h8g7 b1h7 g7f8 h6f6 f8e8 f6e6 e8d8 h7e7 d8c8 e6c6 c8b8 e7c7 b8a8 c7c8 g8c8 c6c8","r":2279,"t":"backRankMate exposedKing fork mate mateIn5 middlegame sacrifice veryLong"},{"i":"h3Uur","f":"6k1/3n1R1p/2p2p2/2b4N/3r1B2/1P6/1P4PP/5RK1 w - - 0 27","m":"f7d7 d4d1 d7d4 c5d4 f4e3 d4e3 g1h1 d1f1","r":2333,"t":"backRankMate collinearMove discoveredAttack discoveredCheck endgame mate mateIn4 pin veryLong"},{"i":"imh96","f":"2r3k1/5p1p/2q1p1pP/2R1P1P1/2pP3n/1pP5/1P1BQ2K/8 b - - 2 36","m":"c6b7 e2e4 b7d7 c5c8 d7c8 e4h4","r":2342,"t":"backRankMate crushing endgame long sacrifice"},{"i":"QAIWK","f":"2r2k1r/3Q1ppp/b3p2n/p3P3/Bb2Nn2/1PN1q3/6PP/1KRR4 b - - 6 22","m":"b4c3 d7d6 f8g8 d6d8 c8d8 d1d8","r":2263,"t":"backRankMate long mate mateIn3 middlegame sacrifice"},{"i":"qnSkK","f":"2r2rk1/1p3ppp/p5n1/3p1NQ1/P3pR2/1q2P2P/6P1/5RK1 b - - 1 29","m":"b3a4 g5g6 f7g6 f5e7 g8h8 f4f8 c8f8 f1f8","r":2273,"t":"backRankMate deflection discoveredAttack fork mate mateIn4 middlegame sacrifice veryLong"},{"i":"1D4hb","f":"r5k1/3RNRpp/4pb2/1qP1Np2/8/7P/p4PP1/6K1 b - - 1 36","m":"g8h8 f7f8 a8f8 e5f7 f8f7 d7d8 b5e8 d8e8 f7f8 e8f8","r":2340,"t":"backRankMate mate mateIn5 middlegame sacrifice veryLong"},{"i":"4VfQN","f":"7k/3Q2bp/5qp1/2pB4/8/8/Pr4PP/4R1K1 w - - 1 27","m":"e1f1 f6f2 f1f2 b2b1 f2f1 g7d4 g1h1 b1f1","r":2210,"t":"backRankMate collinearMove deflection endgame mate mateIn4 sacrifice veryLong"},{"i":"T6Om6","f":"rn1q1Bk1/pp5p/2p1n1p1/4P3/8/5Q2/PbP2RP1/RN4K1 b - - 0 19","m":"b2a1 f3f7 g8h8 f8g7 e6g7 f7f8 d8f8 f2f8","r":2211,"t":"backRankMate clearance fork mate mateIn4 middlegame sacrifice veryLong"},{"i":"kYO9K","f":"8/2B1rk2/2Q4p/3p1q2/5p2/8/5pPP/2R3K1 w - - 0 34","m":"g1f1 f5d3 f1f2 e7e2 f2g1 d3e3 g1h1 e2e1 c1e1 e3e1","r":2204,"t":"backRankMate endgame mate mateIn5 veryLong"},{"i":"bkQlQ","f":"r4rk1/6pp/p1N5/2QP1p2/Pp2P3/1P1P2qb/5RP1/2N3K1 b - - 2 26","m":"f5e4 c5f8 a8f8 c6e7 g8h8 f2f8","r":2261,"t":"backRankMate deflection long mate mateIn3 middlegame sacrifice"},{"i":"ELhFG","f":"3r2k1/1b4pp/p3R3/1pq1p3/4P1Q1/3r2PB/PP5P/5R1K b - - 3 27","m":"c5e3 e6e8 d8e8 g4e6 e8e6 h3e6 g8h8 f1f8","r":2313,"t":"backRankMate clearance mate mateIn4 middlegame sacrifice veryLong"},{"i":"q9TV2","f":"r1bRRrk1/1p1n2pp/p1p5/8/8/q1P1Q3/P1P2PPP/1K6 b - - 5 19","m":"f8e8 e3e6 g8h8 e6e8 d7f8 e8f8 a3f8 d8f8","r":2246,"t":"backRankMate collinearMove mate mateIn4 middlegame pin veryLong"},{"i":"MiE0B","f":"5rk1/pp4b1/n1pp3p/6pn/2PPB3/PQN1NrPb/1P3q1P/2BRR2K w - - 4 24","m":"b3c2 h3g2 e3g2 f2f1 e1f1 f3f1 d1f1 f8f1","r":2201,"t":"backRankMate master mate mateIn4 middlegame sacrifice veryLong"},{"i":"nUlX1","f":"3r2k1/ppQ1Rppp/5n2/8/3q4/8/P4RPP/6K1 b - - 3 28","m":"f6g4 e7e8 d8e8 c7f7 g8h8 f7e8","r":2333,"t":"attraction backRankMate discoveredAttack endgame fork long mate mateIn3 sacrifice"},{"i":"npIPN","f":"4r1k1/3R2pp/b2Bp3/p4p1r/Pp6/1Bb1R3/5P1P/3K4 b - - 1 34","m":"a6c8 e3e6 e8e6 b3e6 g8h8 d7d8","r":2221,"t":"backRankMate long mate mateIn3 middlegame"},{"i":"Dz0rn","f":"8/p2kp2Q/p5p1/8/1P2P3/P1q2P2/2Pr2PP/R5K1 w - - 1 28","m":"a1c1 c3d4 g1h1 d2d1 c1d1 d4d1","r":2384,"t":"backRankMate endgame long mate mateIn3"},{"i":"BInB4","f":"7k/p4Rrp/1p2nQ2/8/7K/5PP1/PP5P/5q2 b - - 4 30","m":"f1g2 f6g7 e6g7 f7f8","r":2337,"t":"backRankMate endgame mate mateIn2 sacrifice short"},{"i":"ojRX1","f":"5r1k/2Q3p1/3p3p/3Bp3/2Pn1nq1/3P4/3N1PPP/3R1RK1 w - - 3 34","m":"c7d6 f4h3 g1h1 h3f2 f1f2 g4d1 d2f1 d1f1 f2f1 f8f1","r":2324,"t":"backRankMate deflection fork mate mateIn5 middlegame pin veryLong xRayAttack"},{"i":"dOnVQ","f":"8/pp1R4/1kp4p/8/1P1P1n2/P2n4/2r3PP/B4RK1 w - - 4 28","m":"d4d5 f4e2 g1h1 d3f2 f1f2 c2c1 f2f1 c1f1","r":2338,"t":"backRankMate endgame fork mate mateIn4 sacrifice veryLong"}] |