fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bqkbnr/pp3ppp/2B1p3/2ppP3/8/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 5 | b5c6 | Is the Black king in check? | Yes | check |
r1bqk2r/pp1p1ppp/2p5/7n/3PP1n1/2NB2K1/PPP3PP/R1BQ3R w kq - 2 10 | Kxg4 | Are there any open files in this position? | No | files |
1r3k1r/p5pp/4R3/4B3/1pp1PP1P/6PB/3R1K2/1q6 b - - 0 40 | Re8 | Is the d-file open, semi-open, or closed? | open | files |
2r3k1/5p1p/1pP3p1/1P6/4P3/1K3P2/P5PP/2n4R w - - 0 32 | d3c1 | Is the White king in check? | Yes | check |
1r1k3r/3bb2p/p2ppR2/qp6/3QP3/P1N5/1PP1B1PP/1K1R4 b - - 0 20 | b4 | Is the White king in check? | No | check |
8/4k3/2p4R/pr2p1p1/4r2p/PPK5/B4RPP/3b4 w - - 0 39 | b4 | Does Black have any isolated pawns? | Yes: a5, c6, e5 | structure |
2r2rk1/4Qppp/2p5/4p3/1n4P1/PP5P/2R5/2K3q1 w - - 5 35 | d4g1 | Is the White king in check? | Yes | check |
8/2p2k2/1p2n2R/1P2P1p1/4K3/8/8/8 b - - 7 48 | g4 | Is the White king in check? | No | check |
6k1/8/1R5K/5P1P/8/8/8/6r1 b - - 8 75 | Kf7 | Is the move from g1 to g5 legal? | Yes | legality |
8/R7/4pk2/1p3pp1/2bP1K2/8/P5PP/8 w - - 0 38 | g7g5 | Is the White king in check? | Yes | check |
r1b1k2r/ppp2ppp/2n1p3/8/2NP4/4P1P1/PP1K1PBP/R6R b kq - 0 13 | Ne7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
2r1rbk1/5pp1/p6p/1p2N1q1/1P1R4/PN5P/Q4P1K/4R3 b - - 2 30 | Qf5 | Is the move from f7 to f6 legal? | Yes | legality |
8/1N6/5k2/p1pP2p1/P1P2p2/4pP1P/1bK5/8 b - - 6 43 | Ba3 | Does Black have any passed pawns? | Yes: e3 | structure |
1rqr4/p4pk1/1p5p/2pn4/8/P5P1/1PQ1PPBP/3R2K1 w - - 0 24 | Bxd5 | Is the move from g2 to e4 legal? | Yes | legality |
1r6/4k1p1/p2Np1b1/1p1pn2p/7P/P5RB/6P1/3R2K1 b - - 1 32 | Kxd6 | Is the White king in check? | No | check |
5rk1/P1Q2ppp/1n6/1r4q1/2pPB3/2P1P2b/5PPP/RR4K1 b - - 2 23 | Rxb1+ | Identify any White knight outposts on the board. | c5 | outposts |
rnbq1rk1/ppp2ppp/3b1n2/6B1/8/2N2N2/PPP1PPPP/R2QKB1R b KQ - 5 6 | g1f3 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r1q1rk1/p4p1p/3Pb1p1/bpp5/5PP1/2P2B2/PB1Q3P/4RRK1 w - - 1 21 | f5 | What is the material balance in this position? | Equal | material |
2r4k/2p3pp/p4p2/8/5P2/2Q5/5qPP/4R2K w - - 2 41 | h3 | Is the move from c3 to f4 legal? | No | legality |
b1rqnbkr/p4pp1/1p2p2p/n2p3P/2P3Q1/1P3N2/P3PPP1/BNR2BKR w KQkq - 1 9 | Nbd2 | Does Black have any isolated pawns? | No | structure |
2r5/4kppp/p1rp1n2/Rp2p3/1P2P3/2N2P2/1PPRK1PP/8 w - - 5 25 | Kd1 | What is the material balance in this position? | Equal | material |
3r3r/p1pk1ppp/Q1R4n/4pq2/8/B4N2/P4PPP/1R4K1 w - - 1 20 | Rxc7+ | What piece is on e5? | Black Pawn | occupancy |
8/5pk1/6p1/p2Q3p/P6P/2q3P1/5PK1/8 b - - 0 46 | Qc7 | Is the move from f7 to f6 legal? | Yes | legality |
r5k1/2pq1r2/np1p2pb/p1PPp2p/1P2Pp2/P1N3PP/3NQPK1/1R3R2 b - - 0 25 | dxc5 | What piece is on h5? | Black Pawn | occupancy |
4r1k1/5pp1/1p5p/p1bB3P/P1Pp3R/3P2P1/4qPK1/3Q4 w - - 6 34 | Qh1 | Does White have any isolated pawns? | Yes: a4 | structure |
1K5n/7P/1p1k4/p1p4B/P1P2p2/1P6/8/8 w - - 15 76 | Kb7 | What piece is on g1? | Empty | occupancy |
r1b5/1pk2Np1/p3pp1p/3p4/PP6/1BP4P/6P1/R3K2n b Q - 1 23 | Ng3 | What piece is on d2? | Empty | occupancy |
1q2r2k/3n1ppp/3P1n2/4pP2/r1N5/p1P3Q1/B4P1P/3RR1K1 w - - 4 31 | Nxe5 | Does White have any passed pawns? | Yes: c3, d6 | structure |
r3r1k1/3b1p1p/1q3npQ/pp1P4/3N4/1PP1NP2/1P5P/R2R2K1 b - - 0 22 | Re5 | What piece is on f6? | Black Knight | occupancy |
r4k2/pp1b1p1Q/3p2n1/5p2/4P3/1P6/2P1N3/1K6 w - - 0 28 | Nf4 | Is the move from h7 to h5 legal? | Yes | legality |
r3kb1r/1p3ppp/p2pp3/4n2n/4P2q/1BN1BP2/PP2QP1P/R2R2K1 w kq - 1 14 | Kh1 | Are there any open files in this position? | Yes: c | files |
8/5k2/2R1N2p/3r1pp1/P2P1n2/5P1P/5PK1/8 w - - 3 43 | e2f4 | Is the White king in check? | Yes | check |
6k1/2q4p/3p2p1/2pP4/4BR2/1p4P1/7P/5K2 w - - 0 34 | b4b3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rnbqk2r/ppppp1bp/5np1/6B1/3PN3/3B4/PPP2PPP/R2QK1NR b KQkq - 2 6 | O-O | Is the move from f6 to g8 legal? | Yes | legality |
1q2r2k/1p5p/1bpp1p2/p1nPpP1Q/P1P1P3/2N4P/1P3P1K/6R1 w - - 2 28 | Qf7 | Identify any Black knight outposts on the board. | None | outposts |
6k1/2p2p2/1p6/p7/P2Nr1pp/2P3P1/7K/R7 b - - 0 34 | h3 | Are there any open files in this position? | Yes: d, e | files |
r1b2rk1/pp1n1p1p/6p1/q5B1/2pPQ3/2P2N2/P4PPP/R4RK1 b - - 0 15 | Qxc3 | What piece is on c4? | Black Pawn | occupancy |
r3r1k1/1pq2ppp/p4n2/8/P1p1PbP1/2Pb1P2/QB1N3P/2KR2NR b - - 2 24 | b5 | Does White have any isolated pawns? | Yes: a4, c3 | structure |
rqr3k1/1bnnbpp1/1p2p2p/p1ppP3/2PP3P/1P2NNP1/PBQ2PB1/3RR1K1 b - - 1 17 | b5 | Is the move from d7 to f8 legal? | Yes | legality |
r3kb1r/pp1npppp/1n6/1Pp5/8/Nb1P2P1/3NPPBP/R1B2RK1 b kq - 2 14 | Bd5 | Does Black have any isolated pawns? | No | structure |
3r1rk1/1q5p/pBbbPppQ/1p3p2/7R/2N5/PPPR2PP/7K b - - 3 26 | Bf4 | Identify any Black knight outposts on the board. | e4, e5 | outposts |
8/p7/5p1p/6p1/1PK3P1/1Bp2P1P/1kP5/1n6 w - - 1 55 | Kd3 | What piece is on d6? | Empty | occupancy |
r6k/p1p2rpp/3b4/3q4/5P2/1P2PKP1/P1PP1R1P/R1B5 w - - 5 23 | e6d5 | Is the White king in check? | Yes | check |
2r2k2/1p1nr1bQ/p3pqBp/3p4/3P1p2/5N2/PP2RPPP/4R1K1 w - - 7 27 | h4 | Does White have any isolated pawns? | Yes: d4 | structure |
r1bq1rk1/pppnbpp1/4pn1p/3p4/2PP1B2/2N1PN2/PP3PPP/R2QKB1R w KQ - 1 8 | g4 | What piece is on e2? | Empty | occupancy |
r3k2r/2q1npp1/1pn1p2p/1QppP2P/3P1B2/P1P2N2/2P2PP1/R4RK1 b kq - 0 16 | Ra5 | Does White have any isolated pawns? | Yes: a3 | structure |
8/5R2/3Np1k1/5p1p/5P2/5r2/3K4/8 w - - 6 51 | f6g6 | What is the material balance in this position? | White is up 1 pawn of material | material |
5k2/6p1/1R3pPp/p1r5/P2p2P1/8/1P3PK1/8 b - - 0 39 | d3 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/bp3ppp/p1pp1nn1/4p3/PPBPP3/2P2N2/3N1PPP/R1BQR1K1 w - - 0 12 | h3 | Is the Black king in check? | No | check |
1r3k2/5p2/3r2pp/1pRPN3/p2K4/8/PP3PPP/8 w - - 1 27 | f4 | What piece is on e6? | Empty | occupancy |
8/1k1nNPR1/8/8/4K3/p7/5rp1/8 w - - 2 66 | f8=Q | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr1b2/pppnq2p/2n1ppp1/3p4/6P1/1PBPP2P/P1P1Q3/RN2KBNR w KQ - 2 12 | e8c8 | What is the material balance in this position? | White is up 7 pawns of material | material |
r1b2rk1/ppq1npp1/4p1np/2ppP2Q/3P4/P1PBBN2/2P2PPP/R3K2R b KQ - 1 13 | c4 | Identify any Black knight outposts on the board. | None | outposts |
8/pr1b3k/3q1r2/2pp1pR1/5P2/P3Q3/4B1PP/2R4K b - - 1 39 | Rb8 | Is the move from f6 to a6 legal? | No | legality |
2r4r/pp1bk2p/4p2p/1P1pPn2/P5B1/3R4/6PP/1N3RK1 b - - 0 23 | Nh4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1qkb1r/pp2pp1p/2p2np1/5b2/7Q/1BN1pP2/PPPP2PP/R1B1K1NR w KQkq - 0 8 | dxe3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3n1k2/5ppp/3p3b/1P1NpQ2/4P2P/q2B4/3r1PP1/5RK1 b - - 2 30 | Ke8 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
1r2rbk1/5pp1/3p2np/1pP1Pq2/8/1Q2BN1P/1P3PP1/R1R3K1 b - - 0 22 | dxc5 | Is the move from f5 to c4 legal? | No | legality |
r1bqkb1r/pp3ppp/2nppn2/1N6/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7 | Bf4 | Does White have any isolated pawns? | No | structure |
2r4r/R3nk2/4b3/2p1P1p1/4PB2/2N5/PPP3PP/5RK1 w - - 0 20 | h6g5 | What is the material balance in this position? | White is up 5 pawns of material | material |
2bq1rk1/2p2pbp/r1p2np1/p1Pp4/Q2P4/2N2N2/PP3PPP/R1B2RK1 w - - 2 14 | Re1 | What is the material balance in this position? | Equal | material |
2rqkb2/1p3p1p/p2p1p2/3N2r1/P2nPR2/2NB2Pb/1PP4P/R2Q2K1 b - - 0 17 | f5 | What piece is on f6? | Black Pawn | occupancy |
r1bq1rk1/ppp1ppbp/3p1np1/3Pn3/2P1P3/2N2NP1/PP3P1P/R1BQKB1R w KQ - 1 8 | Nxe5 | Are there any open files in this position? | No | files |
r2qk2r/pb1nbppp/1p2p3/2pn2N1/2NP4/2PBB3/PP2Q1PP/R4RK1 b kq - 1 12 | Nxe3 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
6k1/1N4pp/1n2p3/1p6/3P4/2r2P2/6PP/1R4K1 b - - 1 29 | Nd5 | Does Black have any isolated pawns? | Yes: b5, e6 | structure |
r5k1/6bp/4p1p1/1N1n4/P3pp2/1P5P/3B1PP1/2r1R1K1 w - - 0 26 | Bxc1 | Is the White king in check? | No | check |
8/1pq2Pk1/8/p1b3p1/3p1P2/PQ1N4/1P2P3/1K6 w - - 1 53 | Qd5 | What piece is on a4? | Empty | occupancy |
r2q3r/pp1n2k1/2p1b3/3pP1bp/3N2p1/3B2Q1/PPP3P1/1K1R3R b - - 5 22 | Qe7 | What is the material balance in this position? | Black is up 4 pawns of material | material |
8/1r6/5pkp/1p1R3p/2p5/2P5/1P4PK/8 w - - 2 46 | Kg3 | Identify any Black knight outposts on the board. | e5, g4, g5 | outposts |
5r1k/p2B2pp/4Q3/2bPq3/2P5/r5P1/P3p1KP/R3R3 b - - 4 29 | Rf2+ | Is the move from c5 to g1 legal? | Yes | legality |
4r1k1/6pp/p7/1pppb3/4b3/1P3P2/P2K2PP/3RN2R b - - 4 28 | Bf4+ | Identify any Black knight outposts on the board. | d4 | outposts |
4kr2/5p1p/p3p1b1/2np2P1/8/8/P1PNB1P1/1K1R4 b - - 1 27 | Ke7 | Are there any open files in this position? | Yes: b | files |
r2qrbk1/1b1n1pp1/5n1p/1ppppN2/1P2P2N/PB1P3P/5PP1/R1BQR1K1 w - - 0 21 | Re3 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r2q1r1k/pbp2pb1/1p2pN1n/7Q/3nNP2/3B4/PPP5/R1B1K2R b KQ - 1 19 | f1d3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7r/pQ6/3Pp1kp/2p1nq2/4R3/2b5/P4PPP/3R2K1 b - - 7 29 | Bd4 | Identify any Black knight outposts on the board. | d4, d5 | outposts |
rn4k1/pppb1ppp/8/3P4/2BP4/2N1n3/PP2NqP1/R2QR2K w - - 0 16 | Nf4 | Is the move from a1 to c1 legal? | Yes | legality |
6k1/6p1/1p4b1/1B5p/P1p5/4R1PP/2r5/6K1 w - - 0 45 | Kf1 | Is the d-file open, semi-open, or closed? | open | files |
r4rk1/2p2q1p/p1Pp1bp1/P3pb2/1P1nN3/2NB4/5PPP/2RQ1RK1 w - - 1 21 | f4 | Identify any White knight outposts on the board. | a5 | outposts |
2kr4/ppp2p2/5p1p/1NP1n3/1P5N/P7/5PPP/R2r2K1 w - - 1 21 | d2d1 | Is the White king in check? | Yes | check |
5rk1/1ppn1ppp/1n3q2/r2Pp3/p1P1P3/2Q2PBP/P3BP2/K2R3R b - - 2 23 | Rc5 | What piece is on d7? | Black Knight | occupancy |
2k1r2r/pppb2p1/7p/3p1p1n/PP6/3B1P2/2P2BPP/R4R1K w - - 2 23 | Bxa7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/8/1k5b/3K3P/2P5/1N6/P7/8 b - - 2 160 | Kb7 | Is the move from b6 to a6 legal? | Yes | legality |
r3k2r/pp3n1p/2pp1q2/2b1p3/2B1P1bP/2NP2P1/PPP1K2n/R1B2Q1R w kq - 9 18 | f3h2 | Is the Black king in check? | No | check |
r3k2r/pp1b1pbp/1q1pp3/2pPnp2/2P5/2NBP3/PPQ1NPPP/1R3RK1 w kq - 4 14 | f4 | Is the move from f2 to c6 legal? | No | legality |
r1b2rk1/1pp1pp1p/B3q1pB/8/8/2p1QN2/2P2PPP/2KR3R b - - 1 16 | Qxe3+ | What piece is on h2? | White Pawn | occupancy |
r1bq1b1r/ppp2kpp/2n5/3pp3/4N3/5N2/PPPP1PPP/R1BQK2R w KQ - 0 7 | Neg5+ | Is the move from a1 to b1 legal? | Yes | legality |
2r1k3/pnp2ppp/8/3R4/1PP5/6P1/P4P1P/6K1 b - - 2 28 | Nd8 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/8/8/2p1k3/pbPp2Pp/7P/P3KN2/8 b - - 7 132 | Ba3 | Identify any White knight outposts on the board. | f5, h5 | outposts |
r1bqk2r/pppn1ppp/4pn2/3p2B1/1bPP4/2N1P3/PP3PPP/R2QKBNR w KQkq - 1 6 | cxd5 | Does Black have any passed pawns? | No | structure |
2q1r1k1/R2n1pb1/6p1/1pP2b2/3B3p/1BP4P/3N1QP1/6K1 w - - 4 35 | Nf3 | What piece is on b5? | Black Pawn | occupancy |
8/1pp1k3/5p1p/1p1Pp3/1Pn3P1/2P1N3/rP5P/1R2K3 w - - 3 35 | Nf5+ | Does White have any passed pawns? | No | structure |
5R2/4k3/1p4pQ/3P1B2/1p6/8/r3q2P/6K1 w - - 1 36 | d6+ | Identify any Black knight outposts on the board. | a3, a5, c3, f5, h5 | outposts |
3r2k1/1p3pb1/4r1p1/2B3P1/p2PP3/Pb1B4/1P2NK2/R7 w - - 1 31 | Ke3 | Does Black have any isolated pawns? | No | structure |
r4q2/1rp4k/3p1bp1/1NnPp2p/p1P1P3/P3R2B/1PQ2P1P/R5K1 w - - 0 25 | Rf3 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
rn1qk2r/p2pbppp/bp2p3/8/3PN3/3B1N2/PPP2PPP/R2QK2R w KQkq - 2 10 | d5 | Are there any open files in this position? | No | files |
2k3r1/1p3K1p/p1n3r1/2N3p1/2P1B1Pb/2N1P2P/P1P5/1R1R4 b - - 2 30 | R8g7+ | What piece is on a6? | Black Pawn | occupancy |
r1q2r2/pb3p1n/1p5k/1Bnp4/3Pp2B/P1P1P2N/3KQP1P/6R1 w - - 2 22 | Bg3 | Does White have any passed pawns? | Yes: h2 | structure |
rn2k2r/pp3pp1/2p1bn2/q2P4/1b1Pp3/1PN3P1/PBQ1P1BP/R3NRK1 b kq - 0 13 | Nxd5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
1r3rk1/5ppp/1q1pb3/4n3/1p2PQ2/2p4P/1PP1NPP1/1B1R1RK1 w - - 0 21 | bxc3 | Are there any open files in this position? | Yes: a | files |
2kr3r/1pp3pp/2b1p3/Q2nPp2/1qNP4/5N2/5PPP/R1R3K1 w - - 0 26 | Ng5 | Does Black have any isolated pawns? | No | structure |
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