fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r6r/pp2kppp/2p1b3/5q2/3pN3/8/PPP3PP/R2QR1K1 w - - 0 15 | Qxd4 | What piece is on f3? | Empty | occupancy |
r5k1/5ppp/1R6/4P3/2K1rP2/P7/7P/R7 w - - 1 31 | Kb3 | Does White have any passed pawns? | Yes: a3 | structure |
8/8/8/5p2/2R1p1k1/2P3R1/5PK1/2r4r b - - 1 59 | Kh4 | Is the Black king in check? | Yes | check |
2k3rr/pp5p/2p1Q3/5b2/8/6P1/2P2P1P/1NKR4 b - - 0 25 | e7e6 | Is the Black king in check? | Yes | check |
6k1/4bpp1/1n2p2p/8/p2P4/P1B2NPP/5P2/5K2 b - - 1 35 | Bxa3 | Does White have any passed pawns? | No | structure |
r2qk2r/pp2pp1p/2n2bpP/2pn1b2/8/2N2NP1/PP1PPPB1/R1BQK2R w KQkq - 1 10 | O-O | Identify any Black knight outposts on the board. | None | outposts |
r2qnr2/p1pp1ppk/1p3b2/3Pp3/4P1QP/4B1N1/PP3PP1/R4K1R b - - 9 20 | Nd6 | Is the move from d8 to g6 legal? | No | legality |
r4rk1/1nqbbp1p/p2p1np1/1p1P4/2p1PRP1/2P1B2P/PPBNQ3/R3N1K1 w - - 1 19 | Rf2 | Does Black have any passed pawns? | No | structure |
3rk2r/pp1q1pp1/2n2np1/2bp4/8/1Q1BP3/PP1B1PPP/2R1K2R w Kk - 0 16 | Rxc5 | Does White have any isolated pawns? | No | structure |
8/8/4p3/3pkp1R/2r5/2PK4/8/8 b - - 7 55 | h1h5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2r5/4k3/8/3K1p1p/1P3P2/6P1/1P6/7R w - - 0 43 | f7e7 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/7k/4b3/4B1PP/5K2/8/8/8 b - - 2 11 | Bf7 | Does White have any passed pawns? | Yes: g5, h5 | structure |
1r3rk1/1bpp1pp1/pp1bp3/5n1p/6Nq/1P1P3P/PP1Q1PP1/RNB2RK1 w - - 0 18 | h7h5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4r2k/3n1pp1/3P1n1p/3q1P2/1PN1pQ2/p4P2/B6P/4R1K1 b - - 0 36 | e3 | Does White have any isolated pawns? | Yes: b4, d6, f3, f5, h2 | structure |
1r4k1/p1p2ppp/2q5/4r3/1B6/K3P3/P7/R1Q2B2 b - - 6 31 | Qb6 | Does Black have any passed pawns? | Yes: c7, g7, h7 | structure |
r6k/pp3Pr1/7p/1q1P1pp1/3N4/PP5P/1B5K/4RR2 b - - 1 32 | Qxf1 | Identify any Black knight outposts on the board. | e4, f4, h4 | outposts |
3rk2r/1Qpb1p2/2np4/1B1N3p/4P1p1/8/PqP2PPP/2R1R1K1 w - - 0 23 | f6b2 | Identify any Black knight outposts on the board. | c5 | outposts |
r1b2r1k/pp1n1p1p/1qp2p2/2b2N1Q/4R3/1Pp2N2/P1P2PPP/2KR4 b - - 0 17 | Rg8 | Is the move from f8 to g8 legal? | Yes | legality |
rn1qk2r/pb2ppb1/1p4pp/2p5/2BPPN1B/2P5/P4PPP/RQ2K2R b KQkq - 1 14 | cxd4 | Is the White king in check? | No | check |
r1b1k2B/2p2pQ1/1bqp2pp/pp2p3/1P2P3/2PP4/P4PPP/RN2K1NR b KQq - 1 14 | axb4 | What is the material balance in this position? | White is up 8 pawns of material | material |
8/3R4/8/p3np1k/6p1/r7/P6R/6K1 b - - 3 44 | d2h2 | Is the Black king in check? | Yes | check |
rnbqk2r/pp2p1bp/4pnp1/2pP2N1/8/2N5/P1PB2PP/1R1QKB1R w Kkq - 2 14 | Bb5+ | Are there any open files in this position? | Yes: f | files |
6k1/pp3p1p/4q1p1/8/3p4/1P6/1P1Q2PP/6K1 w - - 2 33 | Kf1 | Is the move from d2 to e3 legal? | Yes | legality |
5R2/2Q3pk/2b4p/2P2p2/7P/4P1P1/1q2NK2/8 b - - 2 53 | Bb5 | What is the material balance in this position? | White is up 6 pawns of material | material |
r1bq1rk1/1p3ppp/p1nbpn2/4N3/P2P4/2N1B3/1PB2PPP/R2QR1K1 b - - 10 16 | h6 | Does White have any isolated pawns? | Yes: d4 | structure |
r1bqkbnr/ppp2ppp/2Bp4/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4 | b5c6 | Is the Black king in check? | Yes | check |
1n6/r2qkp1p/3p1p1Q/2pP4/p1p5/3P2R1/PPP3PP/7K w - - 8 28 | Rg8 | Is the e-file open, semi-open, or closed? | open | files |
r3r1k1/1bpqbppp/p1np1n2/1p2p3/4P3/PBPP1N1P/1P1N1PP1/R1BQR1K1 b - - 0 12 | d5 | Identify any Black knight outposts on the board. | None | outposts |
1rb2rk1/p5pp/2n1pq2/1p6/2pP4/P1N1B3/1P3PPP/R2Q1RK1 w - - 0 18 | d5 | Are there any open files in this position? | No | files |
8/p5pk/2p4p/5p2/5P1P/7K/P2r4/8 b - - 1 37 | Rxa2 | What is the material balance in this position? | Black is up 7 pawns of material | material |
1k1n4/rP4pp/2rp1p2/1R2p3/4P3/5P2/5P1P/R4K2 w - - 0 32 | Rxa7 | Identify any Black knight outposts on the board. | c5 | outposts |
7k/6p1/2q2b1p/8/5N2/3Q2P1/2P2P1P/6K1 w - - 6 44 | c4 | Identify any Black knight outposts on the board. | None | outposts |
4k2r/1q1nbppp/2bpp3/8/2P1P3/R5P1/1P1N1PBP/2BQ2K1 w k - 3 20 | Qb3 | What piece is on g7? | Black Pawn | occupancy |
4k2r/3q1p2/2b1p2p/1Bb1P1p1/1p5B/1P3QK1/1PP3PP/3rR3 w k - 0 26 | Bxc6 | Does Black have any passed pawns? | No | structure |
r2q1rk1/pp3ppp/2p5/n2p1b2/Q2P4/P3P3/1P1N1PPP/R3KB1R w KQ - 1 14 | b4 | Is the move from a1 to b1 legal? | Yes | legality |
1qr2rk1/5p1p/pp1ppPp1/8/2PNQ3/1P4Pb/P4P1P/R2R2K1 w - - 3 20 | Qh4 | What piece is on d7? | Empty | occupancy |
2kr3r/pp3p2/1n2ppb1/2qp3p/7P/1B4N1/PP3PP1/R2QR1K1 w - - 0 18 | Rc1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3R4/5b2/5p2/P5k1/2PN3p/1P6/1r3K2/8 w - - 3 64 | Ke3 | Is the Black king in check? | No | check |
r2qkb1r/1p1b1p2/p1npp2p/6P1/4P1nB/2N2N2/PPPQ2PP/2KR1B1R b kq - 2 12 | Be7 | What is the material balance in this position? | White is up 1 pawn of material | material |
5r2/3bp1k1/p2p1ppp/2pPn3/2N1P1PP/Pr3P2/1P2BK2/1R5R b - - 0 24 | Rfb8 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r4k2/p5R1/2p3pr/3p1pb1/3B2n1/2N5/PPP3PP/4R1K1 w - - 1 28 | Rb7 | Does White have any isolated pawns? | No | structure |
rnbqkbnr/pp2pppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3 | f1b5 | Is the Black king in check? | Yes | check |
5rk1/2p1qppp/r1nbp3/p7/1p1PN1P1/P3P2P/1PPB1P2/1K1RQ2R b - - 0 18 | c3e4 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnb2r2/pp1p2pk/4p3/3nPp1Q/8/8/PPPN1PPP/R4RK1 b - - 1 15 | g4h5 | Is the Black king in check? | Yes | check |
8/5pp1/pPpr4/3b1k1p/1P5P/P4RP1/2KR4/8 b - - 0 43 | Ke6 | What is the material balance in this position? | White is up 2 pawns of material | material |
3R2k1/6p1/7p/p1p3b1/6P1/1PP4r/8/4K3 b - - 1 38 | Bxd8 | Does Black have any isolated pawns? | Yes: a5, c5 | structure |
r1b4r/ppq1nkpp/2n1p3/3pP1N1/8/2BB4/PP3PPP/R3K2R b KQ - 4 12 | f3g5 | Is the Black king in check? | Yes | check |
rn2kbnr/pp1bppp1/1qp4p/3pP2P/3P2P1/2N5/PPP2P2/R1BQKBNR b KQkq - 0 7 | e6 | Does Black have any passed pawns? | No | structure |
r2q1bk1/6p1/p3Rn1p/1p1p1P2/P1p5/3nBB1P/1P3PPN/3Q2K1 b - - 3 28 | d4 | What piece is on f2? | White Pawn | occupancy |
4r1k1/3pPpb1/B1n4p/q2N4/5Np1/4P3/Prp2PPP/R1Q1K2R w KQ - 0 25 | Ke2 | Does Black have any passed pawns? | Yes: c2 | structure |
8/8/6Rp/3n3P/p2kN1K1/r4P2/7P/8 b - - 6 56 | Rb3 | What piece is on a4? | Black Pawn | occupancy |
1k6/8/1pN5/6R1/p1p3P1/5P2/PPP5/2K5 b - - 2 35 | a7c6 | Is the Black king in check? | Yes | check |
r2qk2r/1b1n1ppp/p1n1p3/1pb1P3/3p1B2/3B1N2/PPP1QPPP/RN3RK1 b kq - 0 12 | Be7 | Are there any open files in this position? | No | files |
6k1/3P1p2/3q2p1/7p/1P1p4/5B2/1n1r1PPP/1R2B1K1 w - - 1 34 | Bxd2 | Does White have any passed pawns? | Yes: b4, d7 | structure |
r4rk1/1b2bpp1/ppq1p3/2ppB2Q/5P2/1P2P3/P1PP2PP/R4RK1 w - - 1 17 | Bxg7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1r3r1k/p1nN3p/bpq1p3/2p2pQ1/8/6P1/P4P1P/3RR1K1 w - - 2 27 | Ne5 | Is the move from g1 to c6 legal? | No | legality |
r4rk1/1pnqppbp/3p2p1/n2P4/4PPb1/4BNP1/PP2Q1BP/RN1R2K1 b - - 2 16 | Nb3 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r3k1/1pp5/p1np1N1p/4pp2/8/P1PP3P/1P2Q1P1/R1B4K b - - 1 22 | e4f6 | What is the material balance in this position? | White is up 11 pawns of material | material |
r1bqk2r/pppp1ppp/2n2n2/1Bb1p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 2 5 | d6 | Is the move from b7 to d8 legal? | No | legality |
r2qr1k1/pp2bpp1/3p1n1p/3P4/3Q4/2B2N2/PP3PPP/R4RK1 b - - 3 15 | Qd7 | What is the material balance in this position? | Equal | material |
rnb1kb1r/pp3p1p/5pp1/q7/2BN4/2N1P3/PP3PPP/R2QK2R b KQkq - 0 9 | Bg7 | Is the move from f6 to e6 legal? | No | legality |
r1b1rqk1/1p3pbp/p2p1n2/2pPn1p1/P3P1P1/2N4P/1P1N1P1B/R2QRBK1 w - - 0 18 | Bxe5 | Identify any Black knight outposts on the board. | None | outposts |
1rbb2k1/pp5p/6p1/P4p2/2P1pN2/1P4PP/5PB1/R5K1 w - - 0 23 | b4 | What piece is on g3? | White Pawn | occupancy |
r2r2k1/pp2ppbp/1qn2np1/2p2b2/2NP4/2P1PNP1/PB2QPBP/R2R2K1 b - - 8 13 | Qa6 | Does White have any isolated pawns? | Yes: a2 | structure |
r5k1/p3q1pp/3p2r1/2pPp3/2PnR2b/P2P1p1P/1B3PB1/1R3Q1K w - - 0 24 | f4f3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2bqk1nB/2p2p1p/4p3/r1b5/1n1p4/8/P1Q1PPPP/RN2KBNR w KQ - 1 13 | Qxh7 | Identify any White knight outposts on the board. | None | outposts |
r1bqkbnr/pp2pppp/2n5/3p4/3P4/3B4/PPP2PPP/RNBQK1NR w KQkq - 2 5 | c3 | What piece is on g6? | Empty | occupancy |
3rr1k1/1pB1bppp/p1p5/2n5/3qP1b1/2N3QP/PPP2PP1/R3R1K1 b - - 0 16 | Rd7 | Is the White king in check? | No | check |
r5kr/ppqR4/2p1b1pp/8/3P4/2N5/PPP3PP/R5K1 w - - 0 20 | Rxc7 | Is the f-file open, semi-open, or closed? | open | files |
3r4/p3p1k1/qp2bpp1/2p1P2p/4R3/P1P2NQP/5PP1/3rR1K1 b - - 3 30 | Bf7 | Are there any open files in this position? | Yes: d | files |
3k4/8/3PK3/8/8/8/8/8 b - - 4 7 | Ke8 | Does White have any isolated pawns? | Yes: d6 | structure |
2r1k3/p1rqn1p1/P1n1p2p/1B1pPp2/1P1P1P2/2R2N2/2R3PP/2Q3K1 w - - 1 29 | Ba4 | Are there any open files in this position? | Yes: c | files |
8/8/8/8/2k3R1/3b4/2p5/2K5 b - - 11 54 | g1g4 | Is the White king in check? | No | check |
2r5/kp1r1pp1/pR2pnp1/2Pq4/3P4/1Q6/4N1PP/1R4K1 w - - 4 40 | Rxa6+ | Is the move from b3 to h4 legal? | No | legality |
4r1k1/7p/5pp1/4B3/2B2P1P/8/P4K2/8 b - - 0 37 | a6c4 | Is the Black king in check? | Yes | check |
Q7/1K6/5p1p/6p1/P3q1P1/5k1P/8/8 w - - 1 64 | Kb8 | Are there any open files in this position? | Yes: b, c, d, e | files |
rnbqkbnr/pp3ppp/4p3/8/3p4/2N1BN2/PPP2PPP/R2QKB1R w KQkq - 0 7 | Nxd4 | Are there any open files in this position? | No | files |
8/4k2p/3R4/5PK1/3P4/3r4/5P2/8 w - - 5 116 | Re6+ | Does White have any isolated pawns? | Yes: d4, f2, f5 | structure |
2r1q3/pQ1b1k1p/3b4/5pp1/3P4/1P4P1/P3PP1P/3R1RK1 w - - 0 22 | Rc1 | Is the move from b7 to d7 legal? | Yes | legality |
4r1k1/2qn1bpp/n1p2p2/pp6/2P5/B2P1NP1/P3P1BP/1R1Q2K1 w - - 0 23 | Qd2 | Does Black have any isolated pawns? | No | structure |
rnbq1br1/p2k4/1ppp1Q2/4p3/4P1BP/P2P2n1/1PP3PN/RNB2RK1 b - - 2 16 | e2g4 | Is the Black king in check? | Yes | check |
r3kb1r/1p2pp1p/1pn2np1/3p4/5B2/2P1PN2/PPbN1PPP/R3KB1R w KQkq - 0 10 | a4 | Are there any open files in this position? | No | files |
6k1/3prp2/1r5p/8/2q2N2/4PKPP/P1p3P1/b1Q1R3 w - - 0 33 | Qxa1 | Is the b-file open, semi-open, or closed? | open | files |
r1bq1rk1/pp3ppp/8/2b5/2P2B2/4p1P1/PP1N2BP/R2Q1RK1 w - - 0 17 | Qh5 | Is the move from g2 to h1 legal? | Yes | legality |
5rk1/1pqrbpp1/4pn1p/p1P5/2Q5/5NP1/PP2PPBP/R2R2K1 b - - 0 16 | Bxc5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qr3/pb4pB/n2k4/2pP4/8/6P1/PPQ2P1P/R2R2K1 w - - 1 22 | Bg6 | What piece is on b6? | Empty | occupancy |
r7/pp2n1k1/2ppPpp1/q7/2B4Q/4R3/PP3P1P/5K2 b - - 2 25 | Nf5 | Identify any Black knight outposts on the board. | d5, f5, h5 | outposts |
r5k1/p2R3p/K6r/6p1/1B6/P7/5P2/8 w - - 0 47 | g6g5 | Is the White king in check? | Yes | check |
r1b1k2r/1pp2pn1/2n2qp1/8/p1Pp1B2/P2Q1NPB/1P2PP2/R3K2R w KQkq - 0 17 | Bd7+ | Identify any Black knight outposts on the board. | None | outposts |
1k6/1p3pp1/1p2b3/1Bp3q1/R3Pn1Q/2p2P2/PPPr4/2K4R b - - 3 25 | Ne2+ | What piece is on e4? | White Pawn | occupancy |
8/1p2b3/2p1n3/3pPp1k/3P1P1p/pP1N1K1P/P4B2/8 w - - 6 43 | Be3 | Is the Black king in check? | No | check |
r1r3k1/1p3pp1/4p1bp/1B2P3/PB1Nn3/1p2P1Pn/1P5P/R2R1K2 w - - 2 26 | Rdc1 | Identify any White knight outposts on the board. | b5 | outposts |
8/8/p2k1b2/2p3pp/2PpP3/7P/PN2K1P1/8 w - - 38 94 | Kf3 | What piece is on c8? | Empty | occupancy |
rnb1k2r/pp3ppp/5q2/1p1p4/1b6/2N5/PB2NPPP/R2Q1RK1 b kq - 1 11 | O-O | What is the material balance in this position? | Black is up 3 pawns of material | material |
r4rk1/1b2nppp/1b2p3/p7/Pp2N3/4P3/1PBB1PPP/2RR2K1 w - - 0 18 | Nd6 | Does White have any passed pawns? | No | structure |
rk1r4/pp4R1/n2P4/3N3P/8/8/PP1p2P1/R2K4 w - - 0 29 | h6 | Is the move from d1 to d2 legal? | Yes | legality |
2kr4/2p2p1p/p4np1/1p2p1B1/1P2P3/n1P2PP1/1K4NP/5R2 b - - 1 26 | Nc4+ | What is the material balance in this position? | Black is up 1 pawn of material | material |
1n1rkb1r/pppqnppp/8/1P2Pb2/2Pp4/P4NP1/3NPPBP/R1BQK2R b KQk - 2 10 | h6 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
7k/1pp4p/2r2prP/p7/P3Pp2/1P1P1K2/1BP4R/8 w - - 4 37 | d4 | What piece is on h7? | Black Pawn | occupancy |
6k1/5p1p/2B1p3/p1P2p2/P7/2PnP1P1/1r5P/2RK4 b - - 2 30 | Nf2+ | What piece is on d1? | White King | occupancy |
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