fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/p7/3P2p1/2P2b2/8/8/P2KpkP1/4N3 b - - 3 38 | Bd7 | What is the material balance in this position? | White is up 1 pawn of material | material |
3rr1k1/pbq1bp1p/5np1/2Np4/N1p5/1P2PP2/PB2Q1PP/2RR2K1 b - - 1 22 | Bc6 | Does Black have any isolated pawns? | Yes: a7 | structure |
6k1/1p4Pp/2b5/1p1p3p/4r2P/2PN1rR1/P2K1P2/R7 b - - 9 31 | Rf7 | Are there any open files in this position? | Yes: e | files |
rnbqk2r/4bppp/p2ppn2/1p6/P2NP3/8/1PP2PPP/RNBQRBK1 b kq - 0 9 | b4 | Is the move from d8 to c7 legal? | Yes | legality |
rnbq1r1k/pp4pp/2pbpn2/3p1p2/2PP4/2NBPP2/PPQBN1PP/R3K2R b KQ - 2 9 | a6 | Are there any open files in this position? | No | files |
r2r2k1/1qp1nppp/p7/8/3R4/P4N1P/1PQ2PP1/5RK1 w - - 1 23 | Re1 | Is the move from b2 to c8 legal? | No | legality |
1r1q2k1/2p3pp/pb2br2/1P1p4/3P4/8/1PBQ1PPP/R1B2RK1 b - - 0 17 | axb5 | Identify any Black knight outposts on the board. | b5 | outposts |
r3r1k1/1pq2bpp/n1p2p2/p3n3/2P1R3/B2P1NP1/P3P1BP/2RQ2K1 b - - 2 20 | Nd7 | Are there any open files in this position? | No | files |
b4rk1/5r1p/2ppq1pQ/2b1p3/1pP1PPN1/7P/P5P1/B1R2R1K w - - 1 27 | f5 | Is the White king in check? | No | check |
r2q1rk1/pp2ppbp/2p3pn/3n4/3PN3/2PB1Q1P/PP3PP1/R1B1R1K1 w - - 1 14 | Bd2 | Is the Black king in check? | No | check |
rn2kb1r/pb3ppp/4p3/qBp5/4n2B/2P1PN2/PP3PPP/RN1QK2R b KQkq - 0 9 | Bc6 | What piece is on f7? | Black Pawn | occupancy |
r3q1k1/1p6/p1bpp2Q/P1n3P1/1n6/2N5/1PP3PP/5R1K w - - 2 29 | Rf6 | Identify any White knight outposts on the board. | h6 | outposts |
r1b2r1k/ppp3pB/3p1q2/3Pn3/1b6/4P1P1/PPQPKN1P/R1B4R w - - 3 16 | Rf1 | Does Black have any isolated pawns? | Yes: g7 | structure |
1k1rr3/1p3pp1/2p4p/2qp4/5PQ1/P7/1RP3PP/R4K2 b - - 5 25 | b1b2 | Identify any Black knight outposts on the board. | c4 | outposts |
r1bqrbk1/ppn2ppp/2p2n2/3p4/2PP4/1P1BNN2/PB3PPP/R2Q1RK1 w - - 7 14 | Ne5 | Is the White king in check? | No | check |
6k1/Qp2q3/4p1pp/PP1pP3/8/8/R3K1PP/1Nr5 b - - 2 27 | Qc7 | What is the material balance in this position? | White is up 3 pawns of material | material |
4b3/p2qk3/1p1r1p1Q/2p1p3/2P4P/8/PPB5/1K2R3 w - - 0 33 | h5 | Is the Black king in check? | No | check |
r1q2r2/pp3p1k/4p1pb/4P3/2p4Q/8/PP3PPP/R3RNK1 b - - 1 20 | Kg7 | Is the move from c8 to c7 legal? | Yes | legality |
6k1/3q2p1/3bp2p/3p1r2/1p1Pp3/1P1bQ1PP/3B1rB1/1N2R1RK b - - 0 28 | Kh7 | What piece is on f6? | Empty | occupancy |
3Q1q2/5pk1/1p2pnpp/p3N3/n1P2P2/4P1PP/6BK/8 w - - 1 37 | Qc7 | What piece is on b3? | Empty | occupancy |
r6k/pp1nBrpp/2pP4/8/1q6/1B1P1P2/P1P1Q2P/1K1R3n w - - 0 20 | Rxh1 | Identify any Black knight outposts on the board. | None | outposts |
r1bqk2r/ppp1bppp/2n5/8/3P4/2N2N2/PP3PPP/R1BQ1RK1 w kq - 2 11 | d5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
2kr1b1r/p4p1p/1pp1b3/2pNPp2/2Pn1P2/4B3/PP3KPP/3R1B1R w - - 0 20 | Nf6 | What piece is on b8? | Empty | occupancy |
1n1qk2r/r4ppp/pp1ppb2/8/2P5/2NQ1bP1/PP2PPBP/R2R2K1 w k - 0 13 | exf3 | What piece is on e8? | Black King | occupancy |
2rq1rk1/p2nbp1p/bp3np1/2pp1Q2/2PP4/1P3NP1/PB1N1PBP/R4RK1 w - - 0 14 | Qh3 | What is the material balance in this position? | Equal | material |
2R5/5k2/8/3pp1p1/4b1Pp/3nP2P/4Q2K/r7 w - - 4 70 | Rf8+ | What piece is on g4? | White Pawn | occupancy |
r1bq1r2/pp4k1/3p1p2/2pN1Pp1/2P1P1Np/5Q2/P5PP/5RK1 w - - 2 24 | Qe3 | Is the move from g4 to e1 legal? | No | legality |
4b3/8/6p1/p1p1kp1p/2P1p2P/P1K1P1P1/5P2/3B4 w - - 2 56 | Bc2 | Is the Black king in check? | No | check |
r4rk1/ppp1qppp/2n1bn2/1B6/3P4/2B2N2/PPP2PPP/R2Q1RK1 b - - 4 10 | e1g1 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/pp3kp1/3bp3/3p1n2/8/2N4r/PPPB4/5RK1 b - - 1 25 | Rh2 | What piece is on a3? | Empty | occupancy |
r5k1/1b4p1/p1q2n1p/3p4/2pQ1P2/2P2N2/PP4PP/R3R2K w - - 1 25 | e4f6 | What is the material balance in this position? | White is up 3 pawns of material | material |
r2qkb1r/pQ3ppp/2p1pn2/3pNb2/1nP5/6P1/PP1PPPBP/RNB1K2R b KQkq - 2 8 | Nd7 | What piece is on d3? | Empty | occupancy |
4rrk1/p4p1p/3b1Bp1/2p5/4P3/1P4Pq/P1Q2P1P/2R2NK1 w - - 1 24 | Ne3 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
8/4R2p/1p3Ppk/8/r5p1/3BKbP1/7P/8 b - - 2 52 | Bd5 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
r7/3n1p1p/1p1pk3/p2Np1P1/RPr1P2p/5P2/1PP1K3/R7 w - - 3 27 | c3 | Identify any White knight outposts on the board. | f6, h6 | outposts |
r2q1rk1/1p2bppp/pn1pb3/4n1P1/4PB1P/1NN5/PPPQB3/R3K2R w KQ - 1 15 | O-O-O | What piece is on f6? | Empty | occupancy |
r3kbnr/ppp2p1p/3P2p1/4p1q1/2B1P3/5Q1P/PPP3P1/RN3K1R w kq - 1 13 | dxc7 | Is the move from c4 to e2 legal? | Yes | legality |
2n1B3/1k6/1p4p1/pKp2p1p/P4P1P/2P3P1/1P6/8 w - - 12 51 | Bxg6 | Does White have any isolated pawns? | No | structure |
3k3r/3b1ppp/2p5/2QpP3/8/1qP5/5PPP/1N3RK1 w - - 3 19 | Nd2 | Identify any Black knight outposts on the board. | c4 | outposts |
8/rb1q1pk1/2p1npp1/p4B1p/3P1P1P/P7/1P2QP2/R3R1K1 b - - 2 24 | gxf5 | Is the move from b7 to g7 legal? | No | legality |
8/8/1bp5/p2pk2N/P4P1R/1PK5/5r2/8 b - - 0 46 | Kd6 | Does Black have any passed pawns? | Yes: d5 | structure |
r1b2r1k/1p4bp/p1nRBp1q/5P2/4pP2/6Q1/PPPB3P/2K1R3 b - - 5 24 | Ne7 | Does White have any passed pawns? | No | structure |
8/8/4k1K1/8/3B4/5bPP/8/8 b - - 2 2 | Bg2 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/2p2ppp/p1np4/bP2p2P/4P3/B1P2N2/3PN1P1/R2K3R b - - 0 16 | a4b5 | What is the material balance in this position? | Black is up 7 pawns of material | material |
1rb1qrk1/b1p2ppp/p1np4/Pp1B4/3Pn3/4BN1P/1P3PP1/RN1Q1RK1 w - - 2 15 | Re1 | What piece is on e6? | Empty | occupancy |
r1bqkbnr/pppp1ppp/2n5/8/3QP3/8/PPP2PPP/RNB1KBNR w KQkq - 1 4 | Qe3 | Is the move from g1 to e2 legal? | Yes | legality |
3r4/kp2q2p/pp2nrpB/2p2p1P/4P3/1P1P2PQ/1PP2R2/1K5R w - - 8 28 | Qh4 | Is the White king in check? | No | check |
rnbqkbnr/pp3ppp/4p3/2p5/2pPP3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 5 | d5 | What piece is on a1? | White Rook | occupancy |
8/3n1pk1/4p3/2r3pp/8/3B2PP/4PP2/R4K2 w - - 6 35 | f4 | Is the move from h3 to a4 legal? | No | legality |
2r1k2r/2qnb1p1/4QpP1/2P5/1B1P4/5N2/3N1P2/4K1R1 b k - 0 30 | Kd8 | Are there any open files in this position? | Yes: a, b, e, h | files |
r1bq1rk1/2pnbppp/p2p1n2/1p2p3/4P3/1BPP1N1P/PP3PP1/RNBQR1K1 w - - 1 11 | Nbd2 | Is the Black king in check? | No | check |
r1bqkb1r/pp1pnppp/2n1p3/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 3 5 | a6 | What piece is on h6? | Empty | occupancy |
rn1qkb1r/ppp1pppp/4bn2/8/Q1p1P3/2N2N2/PP1P1PPP/R1B1KB1R b KQkq - 4 5 | d1a4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qk2r/2p1bppp/p1n1b3/P2pP3/1p2n3/1B3N2/1PP2PPP/RNBQ1RK1 w kq - 1 11 | Ba4 | What piece is on e2? | Empty | occupancy |
r1bq1b1r/pppk3p/2n1p1B1/3pP1pQ/8/8/PPPN1PPP/R1B1K2R w KQ - 1 11 | f4 | Is the White king in check? | No | check |
1r1qk1r1/pppb1p1p/4pn1Q/8/8/B4NP1/p3KPBP/R2R4 b - - 0 17 | c5 | Identify any White knight outposts on the board. | h4 | outposts |
r4rk1/5p1p/pb4PQ/3P1bP1/1p2pq2/3B4/PPP5/1K2R2R b - - 0 25 | Bxg6 | Is the move from h7 to f3 legal? | No | legality |
r3r1k1/pqp3pp/1p1p4/8/2P5/4P1P1/PP1Q3P/R4RK1 b - - 0 25 | Re7 | What piece is on d2? | White Queen | occupancy |
r3kr2/7p/p5p1/2pnP3/8/4P2P/P3BKP1/R1R5 w q - 0 24 | Bf3 | Is the Black king in check? | No | check |
r2q2k1/1ppn1pp1/p2prn1p/1P2p3/P3P3/2PPPN2/2QN2PP/R4RK1 w - - 2 15 | d4 | What piece is on f3? | White Knight | occupancy |
1b1r1rk1/p4ppp/1p3pn1/3N1N2/5P2/8/PPP3PP/1K1R3R w - - 1 22 | g3 | Is the d-file open, semi-open, or closed? | open | files |
r4k1q/p3p3/3n4/2pP1pNp/Q3pP2/4P3/6R1/6K1 b - - 3 39 | Re8 | Identify any White knight outposts on the board. | c6, e6 | outposts |
r4rk1/pp2ppbp/1q3np1/3p1b2/1PBP1B2/P1N1PN1P/5PP1/R2Q1RK1 b - - 0 13 | dxc4 | Does Black have any isolated pawns? | No | structure |
rnbqkb1r/p3pppp/1p3n2/2Pp4/3P4/8/PP3PPP/RNBQKBNR w KQkq - 0 6 | b4 | Is the move from g2 to g3 legal? | Yes | legality |
4r3/r2k1pp1/p3p1bp/1pB1Pq2/3P4/1Q4P1/PP3K1P/2R4R w - - 3 24 | Qf3 | Is the White king in check? | Yes | check |
8/8/6kp/r2p4/5PP1/3R2KP/8/8 w - - 1 52 | Kh4 | Is the move from d3 to c2 legal? | No | legality |
r7/3R2k1/4P3/4K3/8/8/8/8 b - - 12 7 | Kg6 | Are there any open files in this position? | Yes: a, b, c, d, f, g, h | files |
8/p7/1p1pk1p1/4p2p/2P2pbP/2NK4/P7/5R2 b - - 1 33 | Kd7 | Does White have any passed pawns? | No | structure |
1r6/p3k1b1/1p2p1pp/2p1p3/2P1N3/4P3/PP2KPPP/3R4 w - - 0 1 | Rd3 | Does Black have any isolated pawns? | Yes: e5, e6 | structure |
r4rk1/2qnb1pp/pp3p2/3b4/P1BB1P2/6Q1/1PP3PP/3R1RK1 w - - 0 19 | Bxd5+ | Does White have any passed pawns? | No | structure |
6k1/1R3pp1/1p5p/3nB3/8/5PK1/2r3PP/8 b - - 5 35 | f2g3 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
1r4k1/1p3p2/p1p2Qp1/7p/2P4P/2B3P1/PP4B1/2q1r1K1 w - - 0 31 | Kh2 | What is the material balance in this position? | Black is up 5 pawns of material | material |
1k6/pPb4q/1n3Bp1/1Q6/4N3/1B2PP2/PP2K1r1/8 w - - 3 34 | Kd3 | What piece is on b5? | White Queen | occupancy |
r2qr1k1/1bp1bppp/ppn5/3pP1P1/7P/N1P2N2/PPQ1PPB1/R3K2R b KQ - 0 14 | d4e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4k2/pp4bQ/2p1npBB/q3p3/2Pn4/2N4P/PP4P1/3R2K1 w - - 8 25 | Bxg7+ | Is the move from a2 to d3 legal? | No | legality |
2r1r1k1/p1pb1p1p/1p2p2Q/5p2/3q4/2PBR3/PP3PPP/R5K1 b - - 0 20 | Qh8 | Does White have any passed pawns? | No | structure |
2r5/p3k2p/1p2p1p1/1P6/Pbp1N3/4P3/2R1KPPP/8 w - - 3 29 | Nd2 | Identify any Black knight outposts on the board. | b3 | outposts |
2kr3r/pppqbppp/2n1b3/3pP3/3P1N2/2PB1Q2/P1P3PP/R1B1K2R w KQ - 7 11 | Nxe6 | What piece is on g3? | Empty | occupancy |
rnbqkbnr/p1pp1ppp/8/1B6/4Pp2/8/PPPP2PP/RNBQK1NR b KQkq - 0 4 | Qh4+ | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
rnbqk2r/pp3ppp/4pn2/3p4/8/B1P2N2/PP1p1PPP/R2QKB1R w KQkq - 0 9 | Qxd2 | Are there any open files in this position? | No | files |
8/6k1/4K2p/2p4P/3pB3/bP6/2P5/8 w - - 97 170 | Bd3 | Identify any Black knight outposts on the board. | e3 | outposts |
r3kb1r/1p2q1pp/p1nppn2/4p1N1/4P3/2N1B3/PPP2PPP/R2QK2R w KQkq - 2 11 | Qf3 | Does White have any passed pawns? | No | structure |
8/1k4b1/8/3K3P/2P5/PN6/8/8 w - - 1 162 | a4 | What piece is on b7? | Black King | occupancy |
8/1r3kp1/1P1P3p/5b2/2pnNPpP/6P1/1R3N2/5K2 w - - 0 40 | d7 | Is the move from b6 to b3 legal? | No | legality |
rnbqkb1r/p4ppp/5n2/2P1p3/1P1p4/2N2Q2/P4PPP/R1B1KBNR b KQkq - 1 9 | e4 | Does Black have any isolated pawns? | Yes: a7 | structure |
r3kb1r/1p1Q1ppp/p3p3/4Pb2/4pB2/2N5/PP3PPP/R3K2R b KQkq - 0 13 | Kxd7 | Does Black have any isolated pawns? | No | structure |
8/5p2/4p1k1/3pPpPp/1p1PrP2/6K1/1P1R1Q1P/2q5 b - - 3 42 | Qh1 | What piece is on f4? | White Pawn | occupancy |
3r4/p5pk/2p4p/5p2/4RP2/1B4rP/P6K/8 b - - 0 33 | Rxb3 | Is the d-file open, semi-open, or closed? | open | files |
r1b1k2r/pp1nq1pp/3bp3/2p2p2/2PPpP2/1N2P1P1/PP2B2P/R1BQK2R w KQkq - 1 13 | O-O | What piece is on e5? | Empty | occupancy |
5r2/3R1p2/1p4k1/p1b3P1/2B2K2/1P6/P7/8 b - - 0 35 | f5 | Identify any White knight outposts on the board. | f6, h6 | outposts |
8/6pk/1p3r1p/8/1PR5/2Kp2P1/2bR3P/8 b - - 14 41 | Kg6 | Is the move from g7 to g6 legal? | Yes | legality |
r2q1rk1/1bnnbppp/4p3/p2pP3/1p1P3P/P4NP1/1P2NPB1/R1BQ1RK1 w - - 0 16 | a4 | Is the White king in check? | No | check |
2rq1rk1/1b1nbppp/p2p1n2/1pp1p3/4P3/PBPP1NN1/1P3PPP/R1BQR1K1 w - - 2 14 | Nf5 | Does Black have any isolated pawns? | No | structure |
1r1nk1r1/1q3p1p/p1p2p2/3pp2b/Pb2P3/3P1N1P/BP2QPP1/R1B3RK b - - 1 20 | Ne6 | Is the move from b4 to e6 legal? | No | legality |
r1bq1rk1/bp3ppp/2p2nn1/p3p3/P3P3/2P2N1P/1PQN1PP1/R1B1RBK1 b - - 1 14 | Be6 | What is the material balance in this position? | Equal | material |
3r2k1/p3bppp/1p3n2/6N1/1p6/4P1P1/PP3PBP/2R2K2 w - - 0 24 | Nf3 | Does Black have any isolated pawns? | No | structure |
1B6/3k4/6p1/b2p1p1p/P7/3K1PP1/7P/8 w - - 0 63 | Kd4 | Does Black have any isolated pawns? | Yes: d5 | structure |
rnbqk2r/1p2bppp/p2ppn2/8/3NP1P1/1BN5/PPP2P1P/R1BQK2R b KQkq - 0 8 | O-O | Is the move from f6 to f6 legal? | No | legality |
8/8/8/4B3/3B4/6K1/8/6k1 b - - 3 96 | a1d4 | What is the material balance in this position? | White is up 6 pawns of material | material |
1rq2r1k/2nb1pb1/p2p1n1p/PppPp1p1/2P1P1P1/1P4BP/2QNBP2/R2NK2R w KQ - 0 22 | Ne3 | Is the White king in check? | No | check |
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