fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bq1rk1/pp2nppp/3p1n2/2pPp3/2P5/2PBPP2/P2N2PP/R1BQ1RK1 b - - 0 11 | Bf5 | Is the move from f6 to e4 legal? | Yes | legality |
7K/6P1/8/6k1/3q4/8/8/5Q2 w - - 0 1 | Qg1+ | Does White have any isolated pawns? | Yes: g7 | structure |
r2qk2r/pp1nbppp/2p1p1bn/3pP3/3P2P1/1NP2N1P/PP2BP2/R1BQ1RK1 b kq - 0 11 | O-O | Does Black have any passed pawns? | No | structure |
r5k1/5p1p/1B2p3/P7/1P3b2/2P5/2K4p/4R3 b - - 0 33 | e5 | What piece is on c3? | White Pawn | occupancy |
5rk1/5ppp/4pn2/3p4/1Q1P4/PN2P3/2q2PPP/5RK1 b - - 0 22 | Ne4 | Does White have any isolated pawns? | Yes: a3 | structure |
r2q1rk1/1p1bbppp/p1np1n2/4p1B1/4P3/1BN2N2/PP2QPPP/2RR2K1 b - - 1 15 | Bg4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3r1k1/3bppbp/pn1p2p1/1p1P2B1/2pPP3/P1N2PP1/1P1R3P/1K3B1R b - - 0 17 | a5 | Does Black have any passed pawns? | No | structure |
r1bqk1nr/1p1p1p1p/p2Q2p1/2p5/4P3/8/PPP1BPPP/R1B1K2R b KQkq - 0 11 | Qe7 | Is the White king in check? | No | check |
3r1r1k/pp2qppb/2pb3p/4n3/7P/1QP1B1N1/PP2BPP1/3R1RK1 w - - 7 19 | Bxa7 | Does Black have any isolated pawns? | No | structure |
8/p1p2k2/1p3r2/5p2/P1P4p/4P2P/2K2P2/6R1 w - - 0 37 | Rg5 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
r2q1r1k/pp4b1/3pPn1p/3Pp1p1/1PPn4/3BB2Q/P5PP/1R3RK1 b - - 2 23 | e4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
2r5/pbr3kp/6p1/1p6/4PB2/PB1P4/6PP/5RK1 w - - 5 33 | Be6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
6R1/3N1k2/8/r5P1/4K3/8/8/8 w - - 8 66 | Nf6 | Identify any White knight outposts on the board. | f6, h6 | outposts |
r3r1k1/pppb1ppp/3p1q2/2b5/2P2Pn1/1PNQP1P1/P5BP/R1B1R1K1 w - - 7 16 | h3 | Does Black have any passed pawns? | No | structure |
5rk1/p3bpp1/4p3/1q1pP2Q/2r4P/P5R1/5PP1/2B1R1K1 w - - 4 25 | Bg5 | Does Black have any passed pawns? | Yes: d5 | structure |
8/7b/K1k1p3/2Bp2q1/4p3/P7/P4Q2/8 w - - 0 1 | Qf8 | What piece is on e4? | Black Pawn | occupancy |
8/8/7R/1p6/1KP1r2p/5k1P/5P2/8 w - - 0 58 | Rf6+ | Is the Black king in check? | No | check |
8/1r4k1/R4p1p/1p3P2/2r5/8/P1P3PP/5R1K w - - 1 33 | Rf3 | Is the move from a6 to c6 legal? | Yes | legality |
r4r1k/5p1p/pq1p1Pp1/2p3Q1/B1n1PR2/7P/pP4P1/1R5K w - - 0 31 | Qh6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2r2r1k/p2bqp2/1p2pn2/6Q1/3p4/3B4/PPP2PPP/R3R1K1 w - - 2 20 | Re4 | Does White have any isolated pawns? | No | structure |
r1r3k1/1p1bpp1p/p2p2p1/3P4/P1P5/bP1BBP2/3K2PP/1R5R w - - 3 19 | h4 | What piece is on g8? | Black King | occupancy |
8/4q1k1/1Q5p/2n5/4P3/p5PP/6BK/8 b - - 0 48 | Nd3 | Identify any White knight outposts on the board. | d5, f4, f5, h4 | outposts |
r7/pp2Bk2/2p2Q2/3P1p2/8/8/PPP3PP/4R1K1 b - - 2 25 | g5f6 | Is the Black king in check? | Yes | check |
r2qk2r/2p2ppp/p1n1n3/1p1pP3/8/1NP2P2/PPB2P1P/R1b1Q1RK w kq - 0 17 | Nxc1 | Is the move from f2 to e4 legal? | No | legality |
rnbqk2r/pp3pbp/3p1np1/2p1p3/4P3/2P2N1P/PPBP1PP1/RNBQK2R w KQkq - 0 7 | d3 | What piece is on e7? | Empty | occupancy |
r4rk1/pp1bq1bp/n2p4/2pPp1p1/2P1P1pP/2N3B1/PPQ2PP1/R3KN1R w KQ - 0 17 | Ne3 | What piece is on a6? | Black Knight | occupancy |
3r4/6r1/2p1pQbk/2P4p/p2P4/P7/5P2/7K w - - 2 50 | Qxd8 | Is the b-file open, semi-open, or closed? | open | files |
1k6/p6P/1p2p3/4p1p1/2P1Kn2/1P6/P7/8 b - - 2 37 | Ng6 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
8/1k6/3Q2K1/7P/8/B7/8/8 w - - 1 55 | c8b7 | What is the material balance in this position? | White is up 13 pawns of material | material |
4r3/8/3b4/p2bpB1k/2p3R1/8/P6K/8 b - - 5 43 | g1h2 | What is the material balance in this position? | Black is up 5 pawns of material | material |
8/8/5r2/3R4/6k1/2P1P1p1/PP6/6K1 b - - 3 50 | Rf2 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1b1kbnr/ppp3pp/2p5/4Np1Q/3qP3/8/PPPP1PPP/RNB1K2R b KQkq - 2 6 | d1h5 | Is the Black king in check? | Yes | check |
r3r1k1/2p2ppp/p2b4/np6/4N3/P4N2/RPP2PPP/2BR2K1 b - - 0 17 | Rxe4 | What is the material balance in this position? | White is up 3 pawns of material | material |
1r1q1rk1/p4ppp/3B2n1/1ppB4/6P1/2P4P/PP3b2/R2QR1K1 w - - 0 19 | h4f2 | Is the Black king in check? | No | check |
3r2k1/4bpp1/p3p1b1/2p1P2p/NqPBP3/1P2Q3/P4KPP/3R4 w - - 0 3 | Bxc5 | What piece is on c7? | Empty | occupancy |
r3k2r/pp2bppp/2n5/4Pp2/8/1q3B2/P1P2PPP/RN3RK1 w kq - 0 15 | axb3 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r1b1k2r/1p1p1p1p/1pn1p3/6n1/3P4/4P3/PP1N1PPP/R3KB1R w KQkq - 0 13 | h4 | Does Black have any isolated pawns? | Yes: b6, b7, h7 | structure |
8/p7/1p3r2/7N/5kP1/3p3P/PP1K4/8 b - - 7 52 | g3h5 | Is the Black king in check? | Yes | check |
r1bq1rk1/pp2bppp/2n2n2/3p4/3N4/3Q2P1/PP2PPBP/RNB2RK1 w - - 0 10 | Nc3 | Is the move from d3 to g6 legal? | Yes | legality |
8/5p2/pk2p1pp/1n2P3/1PK2PPP/5B2/8/8 w - - 5 5 | Be4 | Is the move from f3 to h1 legal? | Yes | legality |
r1bqk1nr/pppp1ppp/2n5/2b1p3/2B1P3/2P2N2/P2P1PPP/RNBQ1RK1 b kq - 2 6 | e1g1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn5r/1bqkb1p1/pp1ppnQ1/4P3/5P1p/1P1B4/PBP3PP/RN3RK1 w - - 2 15 | exf6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1b1kbr1/1p1n4/pq2pn2/4p3/2B3pB/2N5/PPPQ2PP/2KRR3 b q - 3 21 | Rh8 | Identify any Black knight outposts on the board. | None | outposts |
r1b1kb1r/ppqn1ppp/3pp3/4P3/3P1B2/1QP2N2/P4PPP/R3KB1R b KQkq - 4 10 | Be7 | What is the material balance in this position? | Equal | material |
r4b1r/pp1k1pp1/2n2n1p/2p2qN1/5P1P/1PNpP1P1/PB6/R2Q1RK1 w - - 0 20 | e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3B1b1r/3rn1pp/k1Rp1p2/3Pp3/4P3/N4P1P/5P2/1R4K1 b - - 1 29 | b6d8 | Is the White king in check? | No | check |
r1b1kbnr/pp3ppp/1qn1p3/2ppP3/3P4/P1P2N2/1P3PPP/RNBQKB1R b KQkq - 0 6 | Nge7 | Is the c-file open, semi-open, or closed? | closed | files |
2R5/1p2r1pk/7p/1Pp5/8/4p2P/4K1P1/8 b - - 0 41 | a4b5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2qk3/1p1bb3/1n1p1p1B/PPpPpP1p/4P1nP/2N2Br1/1NKQ4/R4R2 b q - 1 24 | Kf7 | What piece is on e7? | Black Bishop | occupancy |
8/8/7K/p7/Q7/2R2k2/7P/8 b - - 2 58 | c8c3 | Is the Black king in check? | Yes | check |
r3r3/pp1k1p1P/4q1p1/1B1pPp2/7Q/P7/1PP5/1K2RR2 b - - 4 32 | Kc7 | Is the Black king in check? | Yes | check |
Q2nk1nr/p4ppp/3qp3/3pN3/3P4/2P5/PP2bPPP/RN2K2R b KQk - 0 12 | Qc7 | Is the move from d6 to d7 legal? | Yes | legality |
5rk1/R3Rpp1/pr5p/4P3/6PP/6K1/5P2/8 b - - 2 38 | Rc6 | Is the White king in check? | No | check |
8/5Nk1/8/5R2/P2N3B/6P1/3K3P/8 w - - 1 39 | g6g7 | What is the material balance in this position? | White is up 17 pawns of material | material |
3r4/7p/1p1k1pp1/p1p5/4BP2/P5P1/RP2PK1P/3rB3 b - - 0 28 | c4 | Are there any open files in this position? | Yes: d | files |
r5k1/p1p3pp/8/3p4/3P4/2P1q2P/PP4K1/RN3Q2 b - - 0 19 | Rf8 | Does Black have any passed pawns? | No | structure |
r2qk2r/pb2bppp/1p2p3/1BppP3/3P4/P7/1PP2PPP/R1BQK2R b KQkq - 1 11 | f1b5 | Is the Black king in check? | Yes | check |
8/1R6/1pp1p1r1/4P3/5k2/8/4r3/1K5R b - - 6 54 | b5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3r2k1/2p1brpp/p1nqp3/1p2p1N1/nP1pP3/PN1P4/2PBQPPP/R1R3K1 b - - 9 21 | Rf6 | Is the move from f7 to f2 legal? | Yes | legality |
r2qk1nr/ppp2ppp/1bnp4/4p3/1PB1P1b1/2PP1N2/P4PPP/RNBQK2R w KQkq - 1 7 | a4 | What piece is on a1? | White Rook | occupancy |
N5nr/p2kbppp/2np4/4p3/8/4PN2/PP1P1PPP/R1B2RK1 w - - 1 13 | f8e7 | What is the material balance in this position? | White is up 6 pawns of material | material |
r2q1rk1/2p1bppp/p1n1b3/1p1pP3/4n3/2P2N2/PPBN1PPP/R1BQ1RK1 b - - 4 11 | f5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
5rk1/p1q1ppb1/2bp2p1/1p5p/3BPNnP/2Q2P2/PPP5/1K1R3R b - - 1 20 | e5 | Is the move from c7 to a7 legal? | No | legality |
rn2kb1r/pb1p1ppp/4p3/qppP4/4n2B/2P1PN2/PP3PPP/RN1QKB1R w KQkq - 0 8 | dxe6 | Are there any open files in this position? | No | files |
2r1r3/3nb2p/p2p1n2/2qP4/1p3k2/6Q1/PPP3PP/2KR4 b - - 1 27 | Ke4 | Is the Black king in check? | Yes | check |
1q2b1k1/p3bpp1/B3p1n1/1N5n/4P2p/4BPP1/1P1Q1K1P/6R1 b - - 0 26 | Bxb5 | What piece is on g1? | White Rook | occupancy |
3k4/ppp1bpp1/4r3/2p1Pn2/2P1NBP1/1P6/P4PK1/4R3 b - - 0 23 | Nd4 | What piece is on g1? | Empty | occupancy |
r2r3k/pp3p2/1qpR3p/4pQ2/7R/1Pp1b3/P1P2PPP/1K6 w - - 2 23 | Rdxh6+ | Identify any Black knight outposts on the board. | None | outposts |
5k2/4n1pp/3p4/1p1Ppp2/rP2P3/1R1P1BP1/7P/6K1 b - - 2 30 | g5 | Does Black have any passed pawns? | No | structure |
r3kbnr/pp1n1ppp/2p1p3/3p4/2P3b1/1q1PBNP1/PP2PPBP/RN2K2R w KQkq - 0 8 | axb3 | Identify any White knight outposts on the board. | None | outposts |
1r1qr1k1/p2b1ppp/1p2p3/2pP1n2/P1P5/2P3P1/5PBP/2BQRRK1 b - - 2 20 | Qf6 | What is the material balance in this position? | Equal | material |
r3r1k1/1p2qpp1/p2p2p1/2p1nb2/1bP5/1P2PN2/PBQ1BPPP/R2R2K1 w - - 2 19 | e4 | Is the Black king in check? | No | check |
r1b2rk1/3p1pPp/pq6/1p1Q4/2p2P2/1BP5/P1P3PP/R4R1K b - - 2 18 | Kxg7 | Identify any White knight outposts on the board. | None | outposts |
r1b3k1/pp3pP1/4p3/8/2Prp2P/8/PP3P2/2R1KB1R w K - 0 19 | Rg1 | Is the move from f2 to f3 legal? | Yes | legality |
6k1/5pp1/2p5/2rp3P/R7/P7/5PP1/6K1 w - - 0 35 | g4 | Does White have any isolated pawns? | Yes: a3 | structure |
7r/1b1r1pk1/2p3qp/1p2PRpQ/2p5/2N5/1P4PP/5RK1 w - - 1 28 | Qg4 | Is the Black king in check? | No | check |
2kr1b1r/1pp3pp/p7/3pBP2/8/5P2/PPP4P/2KR3R w - - 0 17 | f4 | Is the move from f3 to e7 legal? | No | legality |
4n3/bp1k1pp1/7p/P4N2/1Bb5/2N2P1P/6PK/8 b - - 4 37 | Ke6 | Does White have any isolated pawns? | Yes: a5 | structure |
3r4/4k3/8/1p1rPp1p/1R2p2P/6P1/5P2/2R1K3 w - - 0 36 | Rcb1 | What piece is on d5? | Black Rook | occupancy |
rn1qkb1r/pp1bp1pp/4Nn2/1B6/Np6/8/P1PP1PPP/R1BQK2R b KQkq - 0 10 | Qa5 | Is the White king in check? | No | check |
8/7p/6k1/1p6/1BpK3P/2P5/2b5/8 b - - 1 38 | c5b4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnQ3nr/pp3N1p/2pb4/3q2pk/8/4B2K/P4PPP/6NR b - - 1 20 | Nf6 | Does Black have any passed pawns? | Yes: c6 | structure |
2k3r1/1p6/p3p2Q/3q1p2/3P4/P1B2nP1/1P3K1P/3R4 b - - 2 30 | Ng5 | What piece is on c1? | Empty | occupancy |
r1b2r1k/8/p1p1pbQ1/4B3/3P4/PqN5/1P5P/5RK1 w - - 1 28 | Rxf6 | Does White have any passed pawns? | Yes: h2 | structure |
8/6k1/5p1p/r4K2/4P1P1/8/8/8 w - - 0 44 | a3a5 | Is the Black king in check? | No | check |
r2q1rk1/3nbppp/bp2pn2/pN1P4/2Pp4/1P4P1/P1QN1PBP/R1B2RK1 b - - 1 13 | exd5 | What piece is on b3? | White Pawn | occupancy |
4r2k/1p1q1ppb/p2p3p/3NnP2/6P1/1P5P/P2Q3K/R4R2 w - - 2 27 | Kg3 | What is the material balance in this position? | White is up 1 pawn of material | material |
bn1k1b1r/5p2/4pq1p/1B2N3/3P3p/8/1P3PPP/3QK2R w K - 0 17 | Qa4 | Are there any open files in this position? | Yes: a, c | files |
r6k/ppqb1B2/4p1Q1/2p5/3P4/2N5/PPP3PP/R5K1 w - - 1 21 | Qh6# | Does White have any passed pawns? | Yes: g2, h2 | structure |
r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1B3N2/PPPPQPPP/RNB1K2R w KQkq - 2 7 | a4 | Is the move from h1 to g3 legal? | No | legality |
8/3pRbpk/1r5p/8/p7/R6P/1P3PP1/6K1 b - - 1 39 | Be6 | Are there any open files in this position? | Yes: c, e | files |
rn1q1brk/2p2Qpp/pp6/7R/8/1P4P1/PBP2P1P/4R1K1 b - - 2 23 | Qd6 | Is the move from a8 to e5 legal? | No | legality |
r5r1/5p1Q/p1k1b3/1p1p1p2/2qB1P2/2P5/P5PP/R3R2K w - - 3 25 | Qh4 | What piece is on a4? | Empty | occupancy |
8/p2rkp1p/4p3/2R5/5P2/P7/KPR3Pr/8 b - - 0 34 | Kf6 | Is the move from h2 to h3 legal? | Yes | legality |
1Rr3k1/3q2pp/4p3/4P3/8/R2b4/3N1PPP/4Q1K1 b - - 0 34 | b1b8 | What is the material balance in this position? | White is up 6 pawns of material | material |
r1b2rk1/4q2p/1p1bpp2/p4p2/7Q/3B1N2/PPP2PPP/R4RK1 b - - 1 19 | Bb7 | Does White have any isolated pawns? | No | structure |
2q3k1/p4pp1/1nr5/4P3/P1pBQ3/6P1/3r1P1P/1RR3K1 b - - 0 32 | c3 | Does White have any isolated pawns? | Yes: a4 | structure |
6k1/5p1p/4p3/p7/r7/1pR2PP1/1P2K2P/8 b - - 1 35 | Rb4 | Does White have any passed pawns? | No | structure |
3r1rk1/1bq2p1p/pp1p1np1/4n3/P2NP3/2N2B2/1PP2QPP/4RR1K b - - 1 20 | Nfg4 | Is the move from g8 to g7 legal? | Yes | legality |
5rk1/p5pp/2N1pn2/7r/Np6/4BPn1/P5P1/R2R2K1 w - - 3 23 | Ne7+ | Identify any Black knight outposts on the board. | a3, c3, d5 | outposts |
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