fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2Q5/8/8/6Kp/8/1k4P1/p6P/8 b - - 0 64 | a1=Q | Does Black have any isolated pawns? | Yes: a2, h5 | structure |
r3k2r/pbqnbppp/1p1ppn2/6B1/2NP4/2PB1N2/PP2QPPP/R4RK1 b kq - 5 11 | O-O | What is the material balance in this position? | Equal | material |
r2qr1k1/1b3ppp/2n1pb2/1pPp4/1p1P4/B4NP1/P2Q1PBP/2RR2K1 w - - 0 20 | Bxb4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/8/2b2p2/2k2p1p/p1P2P1p/P2K2P1/1N6/8 w - - 0 44 | gxh4 | Is the Black king in check? | No | check |
rnbqr1k1/1pp2pp1/7p/pP1Pp3/3b4/P1NP1Q1N/2PB1PPP/R3K2R b KQ - 0 12 | Nd7 | Does White have any isolated pawns? | No | structure |
2b1r1k1/6pp/pn6/2pp2P1/P4q2/1P4N1/2P3BP/5RK1 w - - 0 28 | Rxf4 | Are there any open files in this position? | Yes: e, f | files |
2r5/r2k1n2/2p1p1p1/p1P2pP1/P1p2P2/2K1PB2/1R6/1R6 w - - 0 43 | Rh2 | What piece is on b2? | White Rook | occupancy |
r3k1qQ/1pp1n2p/p1np4/4pP2/PP2P3/2P5/6PP/2B2RK1 w - - 1 21 | Qf6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2r2k1/qp3ppp/1np1p3/p4b2/P2P2NP/2P5/1P1QBPP1/R4RK1 w - - 1 23 | Ne5 | Identify any White knight outposts on the board. | None | outposts |
r2q1rk1/p1pp2pp/1pn5/3N4/1bPpPp2/6P1/PPQN1PKP/R4R2 w - - 0 15 | Nxf4 | Is the move from e4 to d4 legal? | No | legality |
r1bqkb1r/ppp1pppp/2n5/1B1nP1B1/8/8/PPP2PPP/RN1QK1NR b KQkq - 2 6 | Bf5 | Is the move from c8 to d7 legal? | Yes | legality |
1Q6/3q1bpk/2pBnp1p/ppp5/4P3/P4PNP/1PP3PK/8 w - - 6 31 | f4 | What is the material balance in this position? | Equal | material |
3r1rk1/p1p4p/8/1PP1pb1q/2P1NpPb/3N1P2/P3Q3/1RB2RK1 b - g3 0 24 | fxg3 | Identify any Black knight outposts on the board. | None | outposts |
r1qk1nQ1/pb1pb2r/5p2/1p1P4/1p6/P5P1/5PBP/R1BR2K1 b - - 0 24 | d6 | Does Black have any passed pawns? | No | structure |
r4rk1/5pp1/p7/1p2q1p1/8/1P6/P4PPP/R3R1K1 w - - 0 24 | Rxe5 | Are there any open files in this position? | Yes: c, d, e | files |
rnb2rk1/pp2bppp/4pn2/1N1q4/3p4/2P1BN2/PP3PPP/R2QKB1R w KQ - 2 9 | Nfxd4 | Is the move from c3 to c4 legal? | Yes | legality |
8/1rq2p1k/2R3p1/3Pp1bn/1BN1P2p/2P2P1P/Q5P1/6K1 b - - 2 53 | Qb8 | Identify any White knight outposts on the board. | b4, c6 | outposts |
8/8/Q3n1k1/1P5p/4PPp1/1P3qP1/P3R2P/5K2 w - - 5 37 | d3f3 | Is the White king in check? | Yes | check |
r5k1/pb3pp1/2rBp2p/2Rn4/8/q3PN2/3Q1PPP/1B3RK1 b - - 0 22 | Rxc5 | Is the Black king in check? | No | check |
4q3/1R3pk1/3Qp1pp/2Ppb3/2rP4/6P1/5PKP/8 w - - 0 37 | Qxe5+ | What piece is on b8? | Empty | occupancy |
6k1/5p2/2R1n3/3p3p/3Pr1pq/4P1PN/5P1P/Q5K1 b - - 0 29 | Qxh3 | Is the move from e4 to b6 legal? | No | legality |
r4bnr/1p1b1kp1/pqn1p2p/2ppP3/3P4/3B4/PPP2PPP/RNBQ1RK1 w - - 0 10 | Qf3+ | Is the move from d3 to e4 legal? | Yes | legality |
4rrk1/3q2p1/Rb5p/1p1pBp2/2pn1P1P/1P2RQP1/5PK1/3B4 w - - 0 30 | Qh5 | Is the Black king in check? | No | check |
7r/ppp1k1pp/1b3p2/8/8/3K2PB/Pr5P/RN5R w - - 2 20 | Re1+ | Identify any Black knight outposts on the board. | e5 | outposts |
r2qk2r/pp1nbpp1/2p1pn1p/7P/3P1B2/3Q1NN1/PPP2PP1/2KR3R w kq - 2 13 | Ne5 | Does White have any passed pawns? | No | structure |
8/pk2N2p/1pb5/8/5B2/8/P1n2PrP/3R1K2 w - - 2 29 | Nxc6 | Identify any White knight outposts on the board. | None | outposts |
r2q1Bk1/1b1p1p1p/p5p1/3p2N1/2p1P2P/2b5/P4PP1/3Q1RK1 w - - 0 20 | a1c3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
4nB2/p2k2p1/1p2p2p/4K2P/2P3P1/1P6/P7/8 w - - 1 35 | b4 | Does Black have any isolated pawns? | Yes: e6 | structure |
1B4R1/8/pk2r1pK/3n1p1p/7P/5PP1/P7/8 b - - 14 51 | Ne7 | Does Black have any passed pawns? | No | structure |
3r2k1/pp3rp1/2p5/8/1Q1P4/1P4P1/1qPKN1P1/2R4R w - - 1 40 | a8d8 | What is the material balance in this position? | White is up 4 pawns of material | material |
3r4/2Qn1p2/1p1P1qpk/1P5p/P4p2/5B2/5PP1/3R2K1 b - - 0 38 | g5 | Does White have any isolated pawns? | Yes: d6 | structure |
rn1qk1r1/ppp2pPp/4b3/8/1bp5/2N5/PB2QPPP/R4KNR b q - 2 11 | Rxg7 | Is the Black king in check? | No | check |
2kr3r/ppp1n1pp/3q1p2/3p1N2/3P4/2P2N2/PP3PPP/R2QK2R b KQ - 0 15 | Nxf5 | Does Black have any isolated pawns? | No | structure |
8/8/6n1/4n3/6Pk/7P/4K3/8 w - - 5 69 | Kd2 | Are there any open files in this position? | Yes: a, b, c, d, e, f | files |
6k1/5p1p/2B1p1p1/p7/P7/2b2P1P/5P2/6K1 w - - 0 29 | g7c3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qkb1r/1b3pp1/p2ppn1p/1p6/3BPP2/2N1Q3/PPP3PP/2KR1B1R b kq - 2 12 | Qc7 | Does Black have any isolated pawns? | No | structure |
8/r3Bpkp/4q1p1/8/5Q1K/8/8/8 w - - 0 2 | Qh6+ | Does Black have any passed pawns? | Yes: f7, g6, h7 | structure |
3q1rk1/r2nbpp1/p3p1p1/np1p4/NP1P4/2QBPPB1/P5PP/2R2RK1 b - - 0 18 | Nc4 | What piece is on f8? | Black Rook | occupancy |
3R1rk1/pp3qp1/4p2p/1b2Pp1P/2r2B2/2P2Q2/P4PP1/3R2K1 b - - 13 25 | Be8 | What piece is on c4? | Black Rook | occupancy |
4Q3/kp4p1/p7/4P3/1b1r4/1P4P1/P1r4P/5RK1 w - - 5 28 | b8a7 | What is the material balance in this position? | White is up 3 pawns of material | material |
2b4r/1pN2kpp/4pp2/p7/1n1Q4/1K1n4/P2Pq1BP/R1B3R1 w - - 6 25 | Ba3 | What piece is on g5? | Empty | occupancy |
2bq2k1/2pn2p1/r1p1p2p/p7/2Pp4/1P3QNP/P2B1PP1/R5K1 w - - 0 23 | Re1 | Identify any Black knight outposts on the board. | None | outposts |
4k3/5p2/6p1/6P1/8/P7/1K6/8 b - - 0 8 | Ke7 | What piece is on f6? | Empty | occupancy |
2r3k1/pn2q2p/br1pp3/1p1p2p1/PP1Pp3/2P1P1P1/3N1P1P/R1Q1RBK1 b - - 1 20 | Nd8 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r1bQ1qk1/pp5p/2p5/8/4p3/8/PPP3PP/R5K1 w - - 4 23 | Qg5+ | What piece is on f4? | Empty | occupancy |
3n4/p2P1k2/8/2N1R2p/6p1/2K2pP1/5r1P/8 w - - 0 47 | Re8 | Is the move from g3 to h6 legal? | No | legality |
2r2nk1/R1B2pp1/4pn1p/1B1p4/3P2PP/2b1PN2/5P2/6K1 w - - 7 29 | Ne5 | Identify any Black knight outposts on the board. | None | outposts |
1k6/4QB2/5p2/4b3/1P6/P6P/2rq2P1/6RK b - - 2 50 | Rc1 | What piece is on f8? | Empty | occupancy |
r7/ppp4p/1bp1k3/4pp2/8/BPP5/P2N1prP/R2K3R w - - 0 22 | Rf1 | Identify any Black knight outposts on the board. | e4, f4 | outposts |
8/4R3/2p4p/p5p1/P1P3k1/1PnP1P2/6KP/8 b - - 0 36 | f2f3 | Is the White king in check? | No | check |
r1bk1bnr/pp1np1p1/1qp1p2p/7Q/3P4/3B4/PPPB1PPP/R3K1NR w KQ - 2 10 | Ba5 | Is the move from f2 to f3 legal? | Yes | legality |
rn1qkb1r/pbp1pppp/1p6/3n4/3P4/2N5/PPQ1PPPP/R1B1KBNR w KQkq - 0 6 | Nf3 | Are there any open files in this position? | No | files |
2rr1k2/p4p1p/1p4p1/nR1p4/3P3P/2P2B2/P4PP1/2R3K1 b - - 5 22 | Nc6 | Are there any open files in this position? | Yes: e | files |
r4r1k/1b2bpp1/p3p3/1p1qP3/2pP4/P1B1QN2/1P3PPP/3RR1K1 w - - 2 23 | c8b7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1k2r/1pq2ppp/p2ppn2/2b5/2PBP3/2N5/PPB2PPP/R2QK2R w KQkq - 0 11 | O-O | What is the material balance in this position? | Equal | material |
r3k2r/1pqb1ppp/p2ppn2/2b5/2PBP3/2N5/PPB2PPP/R2Q1RK1 w kq - 2 12 | Na4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rn1q1rk1/pp2ppbp/2p1bnp1/8/3P4/2PB1NNP/PP3PP1/R1BQ1RK1 b - - 4 10 | Bd5 | Does Black have any isolated pawns? | No | structure |
r1bqkb1r/pppp1ppp/5n2/4p3/3nP3/2NB1N2/PPPP1PPP/R1BQK2R b KQkq - 7 5 | Nc6 | What piece is on h1? | White Rook | occupancy |
r2r2k1/p1q1bppp/1n2pn2/B1p5/2NP4/5BP1/PQ2PP1P/2RR2K1 b - - 0 18 | Nxc4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
8/P7/5p2/4kPp1/R2p2P1/4r3/3K4/8 b - - 2 52 | e2d2 | Identify any Black knight outposts on the board. | c3, e3 | outposts |
r6r/pp1bkpp1/2n1p2p/3pP2P/5P2/3B1N1R/PPP3P1/R3K3 b Q - 5 18 | Nb4 | Identify any Black knight outposts on the board. | None | outposts |
1r1q1rk1/4bpp1/p2p1nn1/1ppP3p/P3PPNP/6P1/1PBN4/R1BQR1K1 b - - 0 20 | Nxg4 | Is the move from a6 to a5 legal? | Yes | legality |
r1bq2k1/p1pp1ppp/1p1B4/8/8/8/PbP2PPP/RN2QBK1 w - - 0 15 | Bxc7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1k1nr/ppp2ppp/2n1N3/3Np3/1b2P3/3P4/PPP2PPP/R1BQ1RK1 b kq - 0 9 | g5e6 | What is the material balance in this position? | White is up 7 pawns of material | material |
r3kn1r/p2qbp2/1p2p3/3pPp2/PPbN1P1p/2P1BN1P/6P1/R2RQ1K1 w kq - 3 21 | b5 | What piece is on h1? | Empty | occupancy |
7k/pp5p/8/3Pbp2/8/6KP/P2B1P2/8 w - - 2 35 | Bf4 | Is the move from d2 to b1 legal? | No | legality |
rn3rk1/p3bppp/1qp1pn2/8/1p2P3/1P2N1P1/PB2QPBP/R4RK1 w - - 2 16 | Nc4 | What piece is on c5? | Empty | occupancy |
r1bq1rk1/1p1n2pp/p2p4/3Ppp2/2P5/Q1N2P2/PP2B1PP/2R2RK1 b - - 0 16 | Rf6 | What is the material balance in this position? | Equal | material |
5rk1/2p2p1p/r1q2n2/p1p1p1p1/Q1P1P3/P1N2P2/6PP/1R3RK1 b - - 1 19 | Nd7 | Is the Black king in check? | No | check |
r4bk1/1q3pp1/2n4p/2pR4/5B2/1PP3N1/2Q2PPP/6K1 b - - 0 29 | Nb4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
rnbqk1nr/ppppppbp/6p1/8/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - 2 3 | f5 | Identify any White knight outposts on the board. | None | outposts |
rnb1k2r/pp2bppp/2p5/3B2B1/8/5N2/PPP2PPP/R3K2R w KQkq - 0 11 | Bc4 | Is the move from f3 to d4 legal? | Yes | legality |
1r6/pb4kp/1p1q2p1/3p1PP1/3Pr3/4NQ2/PP6/4RRK1 w - - 1 31 | f6+ | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r3r1k1/pp3ppp/2p1pn2/q7/1b1P3Q/2NB1R1P/PPP3P1/R5K1 w - - 0 15 | Rxf6 | Identify any Black knight outposts on the board. | None | outposts |
1r2b1k1/1r2npp1/7p/3p4/3N4/1P3N1P/3R1PP1/2R3K1 b - - 0 26 | Ng6 | What piece is on g2? | White Pawn | occupancy |
7r/1p2kp2/p1npbp2/2q1p2p/4P3/1P1B4/P1PQ2PP/4RR1K b - - 5 6 | h4 | Is the move from e7 to e8 legal? | Yes | legality |
8/2n5/5k2/7K/7P/2B3P1/8/8 b - - 4 59 | Kf7 | Is the Black king in check? | Yes | check |
r2qr1k1/p1p2ppp/1p1p1nn1/5N2/3PP3/P1P1PQ2/B2B2PP/5RK1 w - - 7 19 | e5 | Identify any Black knight outposts on the board. | a5 | outposts |
r1bqnrk1/ppp1n2p/3p2p1/2PPp3/1PN1N3/8/P3BPPP/2RQ1RK1 b - - 0 14 | Nf5 | Does Black have any isolated pawns? | No | structure |
r3k2r/ppp1qppp/2n1bn2/3P4/1bP5/8/PP1BBPPP/RN1QK1NR b KQkq - 0 8 | Nxd5 | Does White have any passed pawns? | No | structure |
8/6p1/4K1k1/4p3/4Pb2/5P1P/8/8 w - - 3 67 | g3f4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
k4q2/1R2b1p1/7p/p6P/4B3/8/PP3PP1/1KB5 w - - 0 40 | Rb5+ | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/8/8/1p6/1K4k1/5p2/4bB2 b - - 19 107 | c4b3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
6k1/1p3pq1/2p1p3/p2rP1p1/3P2P1/PP2Q1K1/5P2/3R4 w - - 0 39 | Rh1 | Identify any Black knight outposts on the board. | None | outposts |
rn2r1k1/pp3Pbp/1q1p2p1/1Np3B1/2B5/8/PP3PPP/R4RK1 b - - 0 19 | Kf8 | Does White have any passed pawns? | Yes: f7 | structure |
1rbq1rk1/4bp1p/p2p4/3N1P1P/n2BP3/P4P2/1PPp4/1K1R4 w - - 0 25 | Rg1+ | Does White have any isolated pawns? | Yes: h5 | structure |
r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 3 | Nf3 | What piece is on d5? | Empty | occupancy |
rq3rk1/pb3ppp/1pn1p2n/3P4/8/NPN5/P1P1BPPP/R2Q1RK1 b - - 0 13 | Rd8 | What piece is on h7? | Black Pawn | occupancy |
8/6k1/4p3/4q1Pp/1p6/6PK/2Q5/8 w - - 1 55 | Kh4 | Does White have any passed pawns? | Yes: g5 | structure |
r2q1rk1/ppp1npbp/2npb1p1/3N4/4PP2/4Q3/PPPB2PP/2KR1BNR w - - 3 10 | Bc3 | Are there any open files in this position? | No | files |
6k1/ppq1bpp1/1np4p/4p1B1/P3P1b1/1BN2N2/1PP2PPP/3Q2K1 b - - 0 18 | hxg5 | Identify any White knight outposts on the board. | None | outposts |
2r1r1k1/pp1b1ppp/1qnb1n2/2ppP3/5PP1/2PBPQ1P/PP1NNB2/1R2K2R b K - 0 19 | Rxe5 | Does Black have any isolated pawns? | No | structure |
8/1R3K2/6P1/8/3b4/2n5/2k5/8 b - - 28 89 | Be5 | What piece is on d4? | Black Bishop | occupancy |
4b1k1/PB3pp1/2p1p3/5n1p/2P2P1P/2R3P1/3r2r1/R4K2 b - - 0 36 | Nh6 | What piece is on f4? | White Pawn | occupancy |
r1b1kb1r/4pppp/pqp2n2/3p4/3P1B2/2N5/PP2PPPP/R2QKB1R w KQkq - 0 9 | f3 | What is the material balance in this position? | Equal | material |
2r1r2k/4P1p1/2P2p1p/1B3N1P/pp2P3/6P1/P4P2/6K1 b - - 1 41 | b3 | What piece is on h3? | Empty | occupancy |
r3k2r/ppp2p2/2b4p/4N1p1/8/2P3P1/P1P3PP/R2R2K1 b kq - 0 17 | Ba4 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/2p2ppp/p1Pp4/3p4/3P2q1/B3P3/3NBPPN/R2Q1RK1 b - - 1 21 | f3h2 | Identify any Black knight outposts on the board. | b5 | outposts |
5rk1/pp4pp/4p2r/4R1Q1/3n4/2q4B/P1P2PPP/5RK1 b - - 0 1 | Rxh3 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
rnbq1rk1/pp2bppp/5n2/2p5/5P2/3P1N2/PP2B1PP/RNBQ1RK1 w - - 5 10 | e8g8 | Identify any Black knight outposts on the board. | d4 | outposts |
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