fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
R7/5k2/4p3/2p1P1p1/2PrP1Pp/5p1K/5P2/8 w - - 3 40 | Ra3 | Is the move from e4 to h1 legal? | No | legality |
r5nr/ppp1q1k1/3pB1pn/1N1P4/2P1Pp2/8/PP1Q4/2KR3R w - - 0 21 | Qxf4 | Identify any Black knight outposts on the board. | e3, g3, h5 | outposts |
r1bq1r1k/1p2b2p/ppnp4/3Bp3/4P1p1/2PP4/PP1N1PPN/R2QR1K1 b - - 1 16 | Bg5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r5k1/pp2B2p/2q1b1p1/4p3/3nNr2/5P2/PP1Q2PP/R4R1K b - - 5 21 | Bd5 | What is the material balance in this position? | Equal | material |
2b1Q3/5Brk/p4R1p/1p4q1/3B2P1/bP2P3/2P5/7K w - - 3 39 | Bg6+ | Is the move from e8 to f6 legal? | No | legality |
2rq1rk1/pp1bppbp/3p1np1/4n3/3NP2P/1BN1BP2/PPPQ2P1/R3K2R w KQ - 3 12 | O-O-O | What piece is on e6? | Empty | occupancy |
3k4/3R3p/2P1p1p1/8/3P1p2/5P2/3rNKPP/8 b - - 0 37 | a7d7 | Is the Black king in check? | Yes | check |
r7/1ppq4/p1np1k1r/4pb1B/6N1/3P4/PPP2PP1/R2Q1RK1 b - - 2 20 | h2g4 | Is the Black king in check? | Yes | check |
r3rbk1/1bq2ppp/p1npp3/1p2n3/4PB1P/P1N2NQ1/1PP1BPP1/R2R2K1 w - - 1 17 | h5 | What piece is on h7? | Black Pawn | occupancy |
r2qk2r/1bpn1ppp/p3p3/1p1nP3/2pP4/2N2NP1/PP1Q1PBP/R3R1K1 w kq - 1 13 | Ne4 | Identify any Black knight outposts on the board. | d3 | outposts |
1nb1kbn1/1pp2pp1/8/p2pp3/P3PP1q/3P4/1PP1B1rP/RNBQK2R w KQ - 0 11 | d8h4 | Is the Black king in check? | No | check |
r1bq2k1/pppp1Bpp/1bn2n2/4p3/1P2P3/P1N2Q2/2PP1PPP/R1B1K2R b KQ - 0 10 | Kxf7 | Identify any Black knight outposts on the board. | None | outposts |
2r3k1/pp5p/3p2p1/3Pb3/5rB1/2N4P/P2B3K/2R5 w - - 0 31 | Bxc8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
6k1/1p4pp/p2p4/3qn3/8/6Q1/Pr4PP/5R1K w - - 0 28 | e6d5 | What is the material balance in this position? | Black is up 5 pawns of material | material |
2b1r1n1/r3qpbk/2p4p/2p2P1Q/2PpPB2/1P1P1N1P/2R5/6RK b - - 12 38 | Bf8 | Are there any open files in this position? | Yes: a, g | files |
3q1r1k/2r2np1/2B4p/p1QP1R2/1p2P2P/1P6/5N2/5KR1 b - - 4 48 | a4 | Does Black have any isolated pawns? | No | structure |
r7/5rpk/2qpp2p/1p5P/1P2n3/2P1NPP1/1R5N/1Q4K1 w - - 0 44 | Nd1 | What piece is on c8? | Empty | occupancy |
2rr2k1/1p3pp1/4p3/pN2PnPb/Pb2B2P/8/1P3B2/R4RK1 b - - 2 29 | Rc4 | What piece is on h1? | Empty | occupancy |
r3r1k1/pp3pbp/1qp1b1p1/2B5/2BP4/Q1n2N2/P4PPP/3R1K1R w - - 4 18 | Bxb6 | What piece is on d1? | White Rook | occupancy |
rnb1kb1r/p1pp1ppp/5n2/1B6/4Pp1q/8/PPPP2PP/RNBQ1KNR w kq - 1 6 | Nf3 | Identify any White knight outposts on the board. | None | outposts |
3r2k1/pp2qrpp/4b3/P2pPp2/2pP3P/Q1P3P1/1P3RB1/5RK1 w - - 5 30 | Qxe7 | What piece is on d4? | White Pawn | occupancy |
r1b1k2r/ppp1nppp/3p4/4P3/8/2N5/PPqQ2PP/R1B1KB1R b kq - 2 11 | d5d2 | What is the material balance in this position? | White is up 1 pawn of material | material |
1rbq1rk1/4bp1p/p2p4/3N1P1P/n2BP3/P4P2/1PPp4/1K1R4 w - - 0 25 | Rg1+ | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
1b2k3/p7/1pKP4/1P6/8/8/5N1p/8 b - - 7 10 | Kd8 | Identify any Black knight outposts on the board. | None | outposts |
8/5p2/3b1pk1/7p/3N3P/p2qP1P1/R4P1K/R7 w - - 18 53 | Nc2 | Does Black have any passed pawns? | Yes: a3 | structure |
1nkR4/p1p2ppp/1p2p3/4P3/4bP2/4B1P1/PPP1B2P/6K1 b - - 0 18 | Kxd8 | Is the Black king in check? | Yes | check |
r6r/p2knppq/np2p2p/3pP2P/b1pP2BN/P1P5/R1P2PP1/2BQK2R w K - 8 16 | Rh3 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
rnb2r1k/pp5p/2p5/4Q3/8/2P5/P1P2qPP/2KR2NR b - - 5 21 | Qf6 | Are there any open files in this position? | Yes: d, e, f | files |
3r1r1k/3P3p/1P3np1/8/3QBq2/1P5P/5PP1/4R1K1 b - - 0 41 | Rxd7 | Identify any Black knight outposts on the board. | None | outposts |
r2qr1k1/5pp1/p4n1p/1pbP1b2/7B/2Nn1B2/PP1Q1PPP/1N1R1RK1 b - - 1 18 | b4 | Does Black have any isolated pawns? | No | structure |
r2q3k/1b2bQpn/pp2N3/3n4/3P4/8/PP3PPP/R1B2RK1 b - - 0 17 | Qg8 | Identify any White knight outposts on the board. | e5 | outposts |
r5k1/2pb2pp/1q1p1p2/3Pp3/1pP1P2N/1P2P2P/r3R1PK/2RQ4 w - - 5 31 | Nf3 | Does Black have any passed pawns? | No | structure |
r1bq1rk1/pppn1ppn/3p3p/3Pp3/4P1PP/2N1QP2/PPP1N3/2KR1B1R w - - 1 13 | Ng3 | What is the material balance in this position? | Equal | material |
r1b4r/pp2k1pp/2pNp3/5p2/2P5/1P2P3/Pq3PPK/R2Q1R2 w - - 2 16 | f4 | What piece is on c4? | White Pawn | occupancy |
r4rk1/4ppbp/3p2p1/q1pPn3/4P3/2N3P1/PP3P1P/R1BQ1RK1 w - - 1 16 | Kg2 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
rnbqkbnr/ppppp1pp/8/5p2/8/3P1N2/PPP1PPPP/RNBQKB1R b KQkq - 0 2 | Nc6 | Does Black have any isolated pawns? | No | structure |
R1kr1b2/4p2Q/2p2p2/3q1pN1/1Pb2P2/2P4P/6PK/2B2R2 b - - 1 24 | a6a8 | Is the Black king in check? | Yes | check |
r1b2rk1/2pp1pp1/p2b1q1p/n3p3/P3P3/1p1P1N2/BPP2PPP/R1BQ1RK1 w - - 0 13 | Qe1 | What is the material balance in this position? | Equal | material |
2kr2r1/p2p2Bp/1p2p1p1/n1p1np2/P1P3P1/2P2P1P/4BP2/1R3RK1 w - - 5 20 | h8g8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1qkb1r/ppp2ppp/4pn2/3p1b2/3P1B2/2N1PN2/PPP2PPP/R2QKB1R b KQkq - 1 5 | a6 | Is the move from f8 to g1 legal? | No | legality |
8/2p5/2kb1p2/1pp5/1r4p1/1PK2NP1/2P4P/5R2 w - - 0 38 | Nd2 | Is the move from c3 to b2 legal? | Yes | legality |
4rrk1/5p1p/pp3Rp1/3B4/P1PP4/1P1bp1P1/R6P/6K1 w - - 0 29 | Ra1 | Identify any White knight outposts on the board. | d5 | outposts |
8/p1p3pp/8/1p1k4/6P1/2PK4/P1P4P/8 w - - 0 28 | c4+ | What is the material balance in this position? | Equal | material |
1r1r2k1/5p2/3p2pp/p1q5/8/1PP2P2/P2QR1PP/4R2K b - - 4 29 | d5 | Is the move from g8 to h7 legal? | Yes | legality |
r4rk1/2qbbppp/p2p1n2/1pnPp3/2p1P1P1/2P2N1P/PPB2P2/R1BQRNK1 w - - 1 16 | Ng3 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/pp2ppbp/5np1/2pp4/2PP3P/2N2N2/PP2PPP1/R1BQKB1R w KQkq - 0 6 | dxc5 | What is the material balance in this position? | Equal | material |
k2r3r/ppQ2ppp/5q2/1P6/8/B4P1b/P3NP1P/R1R3K1 w - - 1 22 | Qg3 | What piece is on a2? | White Pawn | occupancy |
6r1/1ppb2qk/3p1nr1/3P1p1p/1PP1pP2/4N1PP/1Q3R1K/3B2R1 w - - 7 34 | Rfg2 | Does Black have any isolated pawns? | Yes: h5 | structure |
6k1/6pp/8/3pP1P1/1p1N3P/pP6/Pr6/K1n5 b - - 1 34 | Nxa2 | Is the move from g7 to h2 legal? | No | legality |
2bq2k1/1pp2rpp/7r/p1b1p3/2P1Pp2/PPQ5/4BPPP/R1BR2K1 b - - 1 20 | Bd4 | Does White have any passed pawns? | No | structure |
r1bq1bk1/ppp1nr1p/3p1np1/2PPpp2/1PN1P3/B1N2P2/P3B1PP/R2Q1RK1 b - - 4 14 | f4 | What piece is on f8? | Black Bishop | occupancy |
r1bqkbnr/pp3ppp/2npp3/1N6/4PB2/8/PPP2PPP/RN1QKB1R b KQkq - 1 6 | Ne5 | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/ppp2ppp/3b4/3p1q2/3P1N2/1Q2B3/PPR2PPP/4R1K1 b - - 0 17 | Qxf4 | Identify any White knight outposts on the board. | None | outposts |
4r3/p1NR2p1/1p4kp/6b1/6QN/8/PP3PP1/3K3R b - - 1 29 | f3h4 | Is the Black king in check? | Yes | check |
r1bqkb1r/pppp1ppp/2n2n2/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4 | d6 | Does Black have any passed pawns? | No | structure |
r2qk1nr/p1pp1ppp/b1n5/2b5/4PpP1/1PN2N2/2PP3P/R1BQ1RK1 w kq - 3 10 | f8c5 | Is the White king in check? | Yes | check |
8/8/4p3/3p4/2pP1P2/2P2K2/1Q1k4/8 b - - 6 49 | b4b2 | Is the White king in check? | No | check |
r2r4/1p1bq2k/p2b2pp/3n1p2/3NpP2/1P2P1PB/PBR1Q2P/2R3K1 w - - 4 24 | a3 | Is the move from e2 to d2 legal? | Yes | legality |
5k1r/1p3p2/2b1pNrp/2q1P2N/3p1P1Q/pPP1R3/Pn4PK/4R3 w - - 0 38 | Rg3 | Does Black have any isolated pawns? | Yes: h6 | structure |
2bq1rk1/3n1p1p/6p1/4P3/1pp1nP1P/1P6/r5P1/1NNRKBQR b K - 1 22 | c3 | Does Black have any passed pawns? | No | structure |
8/8/1R6/4k2P/5pK1/8/2r3P1/8 w - - 5 48 | Kh3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qkb1r/ppp2ppp/8/3pP3/3pn1b1/1B3P2/PPPP2PP/RNBQ1RK1 b kq - 2 9 | d3 | Identify any Black knight outposts on the board. | None | outposts |
4k3/1p3pb1/p1p3p1/4n1Pr/4P3/1P3NB1/4K1B1/3R4 b - - 0 34 | Nd7 | Is the move from g7 to h2 legal? | No | legality |
r2qk2r/pp1b1ppp/2n1pn2/8/PbBNP3/2N1B3/1P3PPP/R2Q1RK1 w kq - 5 11 | f4 | Are there any open files in this position? | Yes: c, d | files |
7k/R7/1p4r1/8/8/1KP5/1P6/8 w - - 0 43 | Rb7 | Is the move from a7 to d8 legal? | No | legality |
r2r4/1p3pbk/2p1b1pp/4q3/Pp2P3/4B1PP/1P2RPB1/R1Q3K1 w - - 0 24 | f4 | Is the d-file open, semi-open, or closed? | open | files |
5rk1/1r1bppbp/2pp1np1/q7/3BP3/1BN2P2/PPPQ2PP/2KR3R b - - 4 14 | Rfb8 | Does Black have any passed pawns? | No | structure |
2r2rk1/1bqnnppp/p3p3/1p1pP2Q/5B1P/P1P3P1/NP3PB1/R3R1K1 b - - 0 17 | d4 | What is the material balance in this position? | Equal | material |
2r2rk1/1b3ppp/1q6/1p2P1P1/7P/1P6/PQ1N1b2/5RK1 w - - 0 30 | c5f2 | Is the White king in check? | Yes | check |
5r2/6bk/p2p4/3P2Q1/4bPNp/7P/3n1K2/8 b - - 1 42 | Bf5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/8/8/4B3/5P1N/2Q3PP/P1k2K2/8 b - - 9 43 | e1c3 | Is the White king in check? | No | check |
rn1k2r1/pp2R3/2p5/3p1Q1p/5Bnq/2N5/PPP3P1/5RK1 w - - 1 22 | Bc7+ | Is the move from c3 to e2 legal? | Yes | legality |
2R5/1r3p2/2bk1rp1/3p3p/1P1RB2P/2P2PK1/6P1/8 b - - 8 41 | Rb5 | What piece is on c3? | White Pawn | occupancy |
8/8/1p1k4/6p1/PP1K3P/4PP2/8/8 b - - 0 44 | gxh4 | Is the move from d6 to g1 legal? | No | legality |
6nk/pp3pp1/2p4p/8/2P5/5q2/P1Kr4/3R4 w - - 0 34 | e2d2 | Is the Black king in check? | No | check |
rnb2rk1/pp2p1bp/2pp1np1/q4p2/2PP4/1PN2NP1/P2BPPBP/R2Q1RK1 b Qq - 2 3 | Qc7 | What piece is on d6? | Black Pawn | occupancy |
r1bq1bk1/pp4n1/2n3B1/3p4/2pP4/2N2Q2/PP3PPP/R4RK1 b - - 1 17 | Be6 | Does Black have any passed pawns? | No | structure |
3rr3/pp2k3/2pRbnpp/8/2P5/1P3B1P/P4PP1/3R2K1 w - - 3 22 | c5 | Are there any open files in this position? | Yes: d, e | files |
1r4k1/2qnpp1p/p5p1/4pPP1/PrP5/1P5P/6B1/1R1Q1R1K b - - 0 29 | gxf5 | Is the White king in check? | No | check |
rn1q1k2/pb3p1p/1ppb1r2/8/3P3Q/4P2N/PP1B1P1P/2R1K2R b K - 1 18 | Nd7 | Does White have any isolated pawns? | Yes: h2 | structure |
2rq1r1k/3b1ppB/4p3/p1bpP3/1n3Q2/5N2/1PP1NPPP/3R1RK1 w - - 1 19 | Qg4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1bq3r/pppknQ2/7b/3B4/3Pp3/8/PPP2PPP/R1B1K2R w KQ - 1 13 | Be6+ | Are there any open files in this position? | No | files |
rnb1k2r/pp2pp1p/3p1np1/q1pP4/2P1P3/1QP5/P4PPP/R1B1KBNR w KQkq - 3 8 | Bd3 | Is the Black king in check? | No | check |
6k1/8/6KP/5PP1/8/8/8/8 b - - 0 50 | f4f5 | Identify any White knight outposts on the board. | e6, f6, g6, h6 | outposts |
rnbqk1nr/ppp2ppp/4p3/3pP3/1b1P4/2N5/PPP2PPP/R1BQKBNR b KQkq - 0 4 | b6 | Is the move from h7 to h5 legal? | Yes | legality |
r1b2rk1/ppqn1ppp/3bpn2/3p4/3PP3/3B1N2/PP1N1PPP/R1BQR1K1 b - - 0 10 | dxe4 | Is the move from c7 to d5 legal? | No | legality |
2r3k1/R6p/4bpp1/4p3/1P6/2P2P2/6PP/5BK1 w - - 0 42 | b5 | Is the move from b4 to h8 legal? | No | legality |
r4r1k/pbnq1ppp/np6/3p1NN1/5B2/6PB/Pb3P1P/R2QR1K1 b - - 1 18 | Qc6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3k2r/ppp1qpp1/2npbn1p/4p3/4P3/P1PBBN1P/1PP1QPP1/R3K2R w KQkq - 4 10 | O-O-O | Is the move from b2 to a5 legal? | No | legality |
5k2/pp3pp1/2b5/4P3/3r4/2Pp2B1/PP3K1P/8 w - - 0 32 | cxd4 | Identify any White knight outposts on the board. | d4, d6 | outposts |
6k1/4r1p1/p1pQ3p/8/P1P1p3/1P3q1n/1B3P1K/R4R2 b - - 1 32 | Nf4 | Identify any White knight outposts on the board. | a4, c4 | outposts |
k4b1r/p4Npp/B1p1p3/3P4/6q1/6B1/PP3P2/3R1RK1 b - - 0 22 | Bc5 | Identify any Black knight outposts on the board. | d5, f5 | outposts |
3rr1k1/p4p2/2pP4/6p1/2p5/3bP1B1/PR3PP1/2R3K1 b - - 1 28 | Rd7 | Does White have any passed pawns? | Yes: d6 | structure |
r1bqkb1r/1p3p1p/p1nppp2/8/2B1P3/2N2N2/PP3PPP/R2Q1RK1 w kq - 0 10 | Nd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk2r/ppp2ppp/3p1n2/4n3/1PP1p3/P1Q1P3/3P1PPP/R1B1KBNR b KQkq - 0 9 | b6 | What piece is on g3? | Empty | occupancy |
rnbqk2r/pp3ppp/2p1pn2/3p2B1/1bPP4/4PN2/PP3PPP/RN1QKB1R w KQkq - 1 6 | f8b4 | Is the Black king in check? | No | check |
2b2Q2/2rkn2p/3p2q1/4p3/P7/4P1P1/2P4P/RR4K1 b - - 0 25 | Qe4 | Is the b-file open, semi-open, or closed? | open | files |
6k1/pp2r1b1/4p1Q1/1q1pPP2/3P2p1/4BN2/1r6/6RK w - - 1 34 | f6 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2r3k1/2qn1p2/p2pr1pb/1p5p/3BP3/1P3NNP/PQ3PP1/1B1R2K1 w - - 9 31 | Ne2 | Identify any White knight outposts on the board. | d5 | outposts |
rnb1k1nr/pp3ppp/4p3/qBb5/4P3/2N2N2/PP1B1PPP/R2QK2R b KQkq - 4 10 | f1b5 | Is the White king in check? | No | check |
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