fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/5pQ1/1kr2r2/p2p3P/3P1P2/6K1/1P3P2/8 w - - 0 50 | Kg4 | Does Black have any passed pawns? | No | structure |
r1b5/1p3p1p/2k5/p1n3PK/3pN3/5r2/7q/2R5 w - - 0 36 | f2h2 | Is the White king in check? | Yes | check |
rnbq1rk1/p1p1bppp/4pn2/1p2N3/2pP4/6P1/PPQ1PPBP/RNB2RK1 b - - 1 8 | c6 | Are there any open files in this position? | No | files |
8/5pK1/3R2p1/2Pbk2p/2r4P/4B1P1/5P2/8 w - - 23 71 | Rxd5+ | Does Black have any isolated pawns? | No | structure |
7Q/8/3q2p1/1p3pk1/1P6/5PpP/2Bb2K1/8 b - - 1 59 | Bxb4 | Is the move from g6 to d1 legal? | No | legality |
r3k2r/1pp1q3/p1n1pn2/2p1p1pp/P3P3/3P3P/1PP2PP1/RN1QNRK1 w kq - 0 14 | g3 | Does White have any passed pawns? | No | structure |
r7/3P1p2/2p2R1p/1p2P1k1/1PnB4/2P5/6P1/7K w - - 2 45 | Rxf7 | What piece is on a5? | Empty | occupancy |
r3kn1r/p2qbp2/1p2p3/3pPp2/PPbN1P1p/2P1BN1P/6P1/R2RQ1K1 w kq - 3 21 | b5 | Does White have any passed pawns? | No | structure |
8/p1R2ppk/4q2p/8/8/8/8/4K3 w - - 1 45 | g4e6 | Is the White king in check? | Yes | check |
1k6/8/8/pQ2Pp2/P4Pp1/1Pp5/6q1/K7 b - - 4 132 | Kc8 | Are there any open files in this position? | Yes: d, h | files |
1r6/R2Pkpp1/2P4p/8/8/K7/6PP/8 w - - 1 41 | d8=Q+ | Does White have any passed pawns? | Yes: c6, d7 | structure |
r3k1r1/pp1b1p1p/3p4/2p1nP1p/2P1PN1q/2PB3P/P6K/R1BQ1R2 b q - 4 17 | Bc6 | What piece is on e5? | Black Knight | occupancy |
1k1r3r/2p3bp/B1p3p1/2N1pn2/5p2/P1PP4/1P3PPP/R4RK1 w - - 1 22 | c8b8 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/P7/1P6/4kR1P/6PK/8/r7 b - - 4 54 | f5f4 | Is the Black king in check? | Yes | check |
4rrk1/3Q3p/3pp1p1/7b/4Pbn1/1PN4P/1P1R2B1/2B4K b - - 4 43 | Ne3 | Is the move from d6 to d5 legal? | Yes | legality |
r2qr1k1/p1p2p2/2pp3p/2b3p1/4P1b1/1N3NP1/PPP2PP1/R2QR1K1 b - - 2 15 | Bb6 | Are there any open files in this position? | No | files |
2r3k1/p4ppp/1q2p3/4p1b1/1P2P3/PB5P/4QPP1/1R4K1 b - - 0 25 | Bc1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
3r2k1/1pq2pp1/r6p/2pP1N2/p1n1PP2/P6P/1P1QN1P1/3R2K1 w - - 1 32 | Qc3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqkbnr/pp1p1ppp/2n1p3/8/4P3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 2 6 | Bc4 | Does White have any isolated pawns? | No | structure |
rnbqkbnr/p4ppp/1pp1p3/3pP3/B2P4/P1N5/1PP2PPP/R1BQK1NR b KQkq - 1 7 | a5 | Identify any White knight outposts on the board. | None | outposts |
5qr1/3b2k1/2pn1p1p/p2p1p2/Pp1P1QPP/1P1B1PN1/4R3/5K2 b - - 17 59 | fxg4 | Does Black have any isolated pawns? | Yes: f5, f6, h6 | structure |
r1b2rk1/pp2ppbp/6p1/5P2/1B4B1/1NN5/PPP2R2/R2QK1q1 w Q - 7 21 | Rf1 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/5pk1/6p1/3QPq1p/8/p4K1P/P5P1/8 w - - 3 50 | c2f5 | Is the White king in check? | Yes | check |
r6R/pp1bkp2/4p3/2Pp4/6q1/N1P5/PP1n1KP1/R5N1 w - - 1 21 | Rxa8 | Identify any White knight outposts on the board. | None | outposts |
8/1p1k4/1pr1R3/3p1PP1/8/2P5/PP6/1K6 w - - 7 40 | d6d7 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1bq1rk1/1n2b2p/p2p2p1/2pPpp2/pPn1P3/2P2N1P/2B1QPP1/R1B1R1K1 w - - 0 18 | Qxc4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
5rk1/1pp3pp/p1qn2r1/4B3/2PP4/3QN3/P5PP/R5K1 b - - 0 32 | c3c4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
7k/1p1r2bp/p3q1p1/4p3/4Q3/4B2P/PP3PP1/R5K1 w - - 0 27 | Rc1 | What piece is on h2? | Empty | occupancy |
2r2rk1/p2qbppp/1p1n1n2/3p4/5B2/3B3Q/PP3PPP/3RR1K1 w - - 0 25 | Bxh7+ | Identify any Black knight outposts on the board. | None | outposts |
r2qk2r/pb1nbpp1/2p1pn2/1p4N1/3PP3/2N5/PPQBBP1P/R3K2R b KQkq - 0 13 | Qb6 | Is the move from g7 to h3 legal? | No | legality |
rn1Q1rk1/pbp2ppp/1p6/1P2P1b1/2P1pB2/P3P2P/5PP1/R3KBNR b KQ - 0 13 | d1d8 | What is the material balance in this position? | White is up 10 pawns of material | material |
r3k1nr/5ppp/1pp2q2/p1b1p3/2B1P3/1QN5/PPP2PPP/2KR1R2 w kq - 0 13 | a4 | Does Black have any passed pawns? | No | structure |
rnbqk2r/pppn1ppp/8/3BP3/Qb6/8/PB3PPP/RN3KNR b kq - 0 9 | a5 | Does White have any isolated pawns? | Yes: a2 | structure |
r3k2r/1p3pb1/p1pNp1pp/q3Pn2/3P4/5Q2/PP3PPP/R1B2RK1 b kq - 2 16 | e4d6 | Is the Black king in check? | Yes | check |
6B1/5p2/pkn1p2p/4P2P/1P3P2/3K4/8/8 b - - 4 10 | Nxb4+ | Is the White king in check? | No | check |
5k2/p4pB1/2p5/3p2q1/5R1p/4PQ2/PPP3P1/R5KN b - - 0 25 | c3g7 | What is the material balance in this position? | White is up 16 pawns of material | material |
2r1b1k1/pp3rbp/3qp2p/PP1p4/3P4/6P1/2NQBP1P/R4RK1 b - - 0 20 | e5 | What is the material balance in this position? | Equal | material |
rnbq1rk1/ppppppbp/5np1/8/2PP4/5NP1/PP2PPBP/RNBQK2R b KQ - 2 5 | d6 | Identify any Black knight outposts on the board. | None | outposts |
rn2kbr1/pbpp3p/6q1/1B3p2/3PnR1N/2N5/PPP1Q1P1/R1B3K1 b q - 1 14 | Qg3 | What piece is on f3? | Empty | occupancy |
2kr2r1/1bp1qp2/np2pn2/p1p3p1/P2P4/1QP1P1B1/3N1PP1/1R2KB1R w K - 0 17 | Nc4 | Is the White king in check? | No | check |
2q1r2k/5ppn/1p1Qn2p/1P3R1P/3pP3/1B1P4/P2B2P1/6K1 w - - 3 36 | Qxb6 | Identify any Black knight outposts on the board. | None | outposts |
r1b4k/ppQ2p1p/4p1p1/1Bp3q1/8/2P5/PP3PPP/5RK1 w - - 0 20 | Qxf7 | Is the move from c7 to b6 legal? | Yes | legality |
5rk1/2Qbq2p/4pppP/1pP5/p3p1B1/P1P5/5PP1/1R4K1 b - - 1 34 | f5 | Does White have any isolated pawns? | Yes: a3, c3, c5 | structure |
4r3/2r2p1k/B3pQnp/pp1pP3/q2P3P/4B1P1/1P3P2/4R1K1 w - - 1 30 | h5 | Identify any Black knight outposts on the board. | b4 | outposts |
2b2q2/p1rN3k/1p2QR1p/8/5P2/2p5/P5PP/7K b - - 3 35 | Bxd7 | Is the White king in check? | No | check |
2rr2k1/p4pp1/1b2bq1p/8/Q3N3/6P1/PP3PBP/1R3RK1 b - - 8 20 | Qe5 | What piece is on d5? | Empty | occupancy |
r3r1k1/p2q1ppp/np3n2/2pp4/P2P4/2PQP3/1B2NPPP/R4RK1 b - - 2 14 | c4 | Identify any Black knight outposts on the board. | a5 | outposts |
4N3/q3k3/3p2Q1/1pb4P/p7/P1P1p3/KP4P1/8 w - - 0 38 | h6 | Is the move from a3 to g1 legal? | No | legality |
2r2qk1/7p/1pNrp1p1/1Pn1Np2/p1P1nPP1/P3Q2P/2K5/3R2R1 w - - 0 34 | Rxd6 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
8/6b1/5pp1/p2p1k1p/3PpP1P/1Pp1P1P1/P1N3K1/8 b - - 1 42 | Bf8 | Does White have any passed pawns? | No | structure |
r1b1k1nr/1p1p1pbp/p2p2p1/PNq5/3pP3/8/1PP2PPP/R1BQKB1R w KQkq - 1 11 | b4 | Identify any Black knight outposts on the board. | None | outposts |
8/2K5/8/2P5/5R1p/7k/5P2/1r6 b - - 5 64 | Rh1 | What piece is on h5? | Empty | occupancy |
rnb2rk1/pp2np1p/2p1p1p1/2Pp4/1q6/1P1PP3/P1Q2PPP/RN2KBNR w KQ - 1 11 | b6b4 | Is the Black king in check? | No | check |
r1bqk2r/pp3pp1/3p1nNp/2pPp3/2P1PP2/2PB4/P5PP/R1BQK2R b KQkq - 0 12 | fxg6 | What is the material balance in this position? | White is up 3 pawns of material | material |
1r4qr/1k2n1p1/1n2p2p/pp1pPp1P/b1pP1P2/P1P1N1BB/R1P3P1/3Q1RK1 b - - 3 29 | g5 | Does Black have any passed pawns? | No | structure |
8/1p1kp2R/6p1/2B5/4p3/n1P5/P2K2PP/6r1 b - - 6 26 | a7c5 | Identify any White knight outposts on the board. | b4 | outposts |
2r1r1k1/3n1p2/R2p2p1/4q2p/1PnpP3/5B2/5PPP/1R1QB1K1 b - - 0 28 | d5 | Is the White king in check? | No | check |
8/4K1k1/4Pnpp/p1N2p2/5P2/8/1P4PP/8 w - - 2 39 | Kd8 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
3r2k1/pb5p/1p5B/2br2p1/4p2N/1P2P1P1/P4P1P/2R2R1K b - - 0 27 | gxh4 | Does Black have any passed pawns? | No | structure |
r2qr1k1/1bp1bppp/p1n2n2/1p1Pp1N1/P7/1B1P4/1PPN1PPP/R1BQR1K1 b - - 0 12 | Nxd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/p7/2K5/4k1p1/6P1/P6P/8 b - - 0 44 | Kf3 | Does White have any passed pawns? | No | structure |
r3rbk1/1bn2p1n/pQ4p1/1p1Ppq1p/2p1NP1B/P1N2B1P/1P4P1/3RR1K1 b - - 5 24 | Qc8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
5rk1/1p2Qp1p/b5p1/3P4/8/1B3P1P/Pq4P1/4R2K w - - 2 32 | d6 | Are there any open files in this position? | Yes: c, e | files |
r1b1kbnr/ppp1qp2/2n5/4P2p/5B2/8/PPP1B1pN/RN1Q1RK1 w kq - 0 12 | h3g2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3Rbrk1/pQ4p1/4p2p/4Pp2/3P1B2/8/P4PPK/3q4 b - - 2 29 | Qg4 | Is the move from g8 to a2 legal? | No | legality |
r2r2k1/1pq2p1p/4p1p1/p2n4/b2NB3/2P3P1/PP1RQP1P/4R1K1 b - - 0 20 | Be8 | Is the White king in check? | No | check |
6kB/1Q6/p7/1p2N3/7p/1P2K3/1PP3PP/3q1r2 b - - 8 42 | Kxh8 | What piece is on d2? | Empty | occupancy |
8/1r6/p1R1p3/1p1k1p1p/4p2P/P3K1P1/5P2/8 w - - 0 34 | Rxa6 | Identify any Black knight outposts on the board. | a4, c4, d3, d5 | outposts |
r7/1pp1npk1/3p2bp/p3r3/1PP2NPP/P2B1P2/5K2/RR6 w - - 0 23 | Re1 | What piece is on g7? | Black King | occupancy |
7r/pp2kp1P/2p1p2K/2P2n2/8/1P6/P4P2/7R w - - 4 35 | d4f5 | Is the White king in check? | Yes | check |
r1bq1rk1/1p1nbppp/p1npp3/6P1/3NP2P/1PN5/P1P2PB1/R1BQK2R b KQ - 0 11 | Nc5 | What piece is on c1? | White Bishop | occupancy |
r4qk1/pbpp2pp/1p2p3/n3N3/3P4/2PB2Q1/P1P3PP/R1B2K2 w - - 1 16 | d8f8 | Is the White king in check? | Yes | check |
5rk1/5ppp/p7/8/2p1p3/2P2PP1/PP2QK1q/3R4 w - - 3 34 | h1h2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/pb1n1ppp/1qp1pn2/8/2BP4/2B1PN2/PP3PPP/R2Q1RK1 w kq - 1 12 | d8b6 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnbqkb1r/pppp1ppp/5n2/4p3/P3P3/2N5/1PPP1PPP/R1BQKBNR b KQkq - 2 3 | Bb4 | Is the move from f6 to g7 legal? | No | legality |
rn1qk2r/1b2bppp/p3pn2/2pP2B1/8/2N3P1/PPP1NPBP/R2Q1RK1 b kq - 0 10 | e4d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4knr/1Q3pp1/p1p3q1/3p4/5Bp1/2P4P/PP3P2/R3R1K1 b - - 1 20 | gxh3+ | Is the Black king in check? | No | check |
r4b1r/pb2n1pp/2p5/1k3P2/1Pq3Q1/2B5/P5PP/2KR3R w - - 1 22 | a4+ | Identify any Black knight outposts on the board. | d5 | outposts |
rnbqk1nr/ppp2ppp/4p3/8/3Pp3/2b1B3/PPP1NPPP/R2QKB1R w KQkq - 0 6 | b4c3 | Is the White king in check? | Yes | check |
3r2k1/p1qr3p/1p3P1B/3n4/2nP4/P4Q2/6PP/4RRK1 w - - 1 29 | f7+ | Is the move from h2 to h3 legal? | Yes | legality |
r1bqkbnr/ppp3pp/2np4/1B3p2/4Pp2/2N2N2/PPPP2PP/R1BQ1RK1 b kq - 1 6 | e1g1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
q1r3k1/3nb1p1/2p1p2p/rp1p4/P2P4/2N1PN1P/2Q2PP1/1R1R2K1 w - - 0 22 | Ne5 | Does White have any isolated pawns? | Yes: a4 | structure |
1n1r1rk1/pbq2p1p/1p1bpp2/2p1Nn1Q/3P1P2/P1PB4/1P4PP/R3R1K1 w - - 2 19 | Bxf5 | Does Black have any isolated pawns? | Yes: h7 | structure |
2kr1bnr/pppPppp1/5q2/3PN2p/1n3P2/7P/PPQ3P1/RNB1KB1R b KQ - 0 15 | c6d7 | Is the Black king in check? | Yes | check |
1Rb1k3/r6p/P5p1/2bnp3/4P3/5PK1/1P4BP/R7 b - - 3 39 | Ne7 | What piece is on d2? | Empty | occupancy |
8/p7/8/k2p4/8/1q1pK3/8/8 b - - 1 58 | f2e3 | What is the material balance in this position? | Black is up 12 pawns of material | material |
1r2r1k1/3n3p/bq1p1pp1/p2PpP2/4P3/P1P1B1NP/R2Q2P1/5RK1 b - - 4 31 | Qb3 | What piece is on a5? | Black Pawn | occupancy |
8/3r2Kp/8/1p4PP/3k4/1P4R1/8/8 w - - 7 47 | d5d7 | Is the White king in check? | Yes | check |
r4rk1/p1p2ppp/3b1n2/1q6/3Pp1b1/1NP5/PP3PPP/RNBQ1RK1 w - - 5 13 | Qd2 | Does White have any passed pawns? | No | structure |
5rk1/5ppp/bB6/8/8/3nK1PP/P7/R4R2 b - - 4 29 | Nb4 | What piece is on c8? | Empty | occupancy |
8/4Qpk1/3R1p1p/4p3/1p2P3/1q3PK1/6PP/8 b - - 1 39 | d7e7 | What is the material balance in this position? | White is up 4 pawns of material | material |
r7/2p2kp1/4p2p/pP1p1p2/Pn1P1P2/2R1P1P1/6BP/6K1 b - - 2 28 | Ra7 | Identify any White knight outposts on the board. | a6, c6 | outposts |
1r1q1rk1/p1p2ppp/3p4/3Bp3/Pn1bP3/3PBb2/1PP2PPP/1R1Q1RK1 w - - 0 14 | gxf3 | Identify any Black knight outposts on the board. | None | outposts |
4r1k1/3r1ppp/pBb5/2P2P2/3p2P1/1P2p2P/P2N1K2/4R3 w - - 0 31 | e4e3 | Is the White king in check? | Yes | check |
8/2r2pp1/p2p4/1p1PpPk1/1P2RbPp/PKPB3P/8/8 w - - 3 36 | c4 | What piece is on b4? | White Pawn | occupancy |
6nr/ppp4k/6pp/2PNr3/4P3/2Q5/P1P2PPP/R4RK1 w - - 0 21 | e8e5 | What is the material balance in this position? | White is up 11 pawns of material | material |
r2q1rk1/pp3pp1/3bbn1p/2pp4/3Q4/1P1BN3/PBPPRPPP/4R1K1 w - - 0 19 | Qh4 | Are there any open files in this position? | Yes: e | files |
5b1k/5p1p/B1Nr1q2/3RpPr1/1Q6/8/PPP5/1K5R b - - 0 29 | Qg7 | What piece is on d6? | Black Rook | occupancy |
rnb3k1/pp3rbp/3pp3/4q1NQ/2B5/2p5/PPP3P1/R1B1K2R w KQ - 0 15 | Be2 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
rq3rk1/pb1p1ppp/1pn1p2n/1N6/4P3/bPN5/P1P1BPPP/R2Q1RK1 w - - 0 12 | Nxa3 | What piece is on f1? | White Rook | occupancy |
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