fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2k5/ppp4N/3prp2/7p/3n2p1/1P4PK/P6P/5R2 w - - 0 33 | g5g4 | Is the White king in check? | Yes | check |
rn2k2r/p1pp1ppp/Bp2p3/2b5/3PPPn1/2N1K3/PPP1N2q/R1B5 w kq - 2 12 | f6g4 | Is the White king in check? | Yes | check |
rn2kb1r/pp3ppp/2p2n2/4P3/4P1b1/2N2N2/PPP3PP/R1BqKB1R w KQkq - 0 8 | Kxd1 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/pp3bP1/8/3p1Q2/2P1rp1P/3B4/Pq3P2/2RK2R1 w - - 2 28 | cxd5 | What piece is on c4? | White Pawn | occupancy |
r1bq1rk1/pppnppbp/3p1np1/8/3P1B2/3BPN2/PPPN1PPP/R2QK2R w KQ - 4 7 | h4 | Does White have any passed pawns? | No | structure |
r1bq1r1k/1p2n2p/3p1np1/PN1Pp3/1B2p1P1/R7/3QBP1P/5RK1 w - - 1 21 | h3 | Identify any Black knight outposts on the board. | d3, d4, f3 | outposts |
1r1q1rk1/p1ppnpbp/b5p1/4n3/4P3/1BN1Q3/PPPB1PPP/2KR2NR w - - 5 12 | Nf3 | Is the move from e3 to e1 legal? | Yes | legality |
r2qkb1r/ppp2ppp/2npp3/3nP3/2PP2b1/5N2/PP2BPPP/RNBQ1RK1 b kq - 0 7 | Nde7 | What piece is on g7? | Black Pawn | occupancy |
2kr2r1/pq3pPp/8/4n3/4Q3/8/PPP2PRP/R4K2 w - - 0 23 | Qxe5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
2rq1bk1/1p3p1p/p3bp2/2p4Q/3pN3/1P6/1PP2PPP/R3R1K1 w - - 2 19 | f4 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r2k3/4qpp1/3p2r1/p1nQ1b2/2PPp2p/P3P2P/1B2BPPR/2KR4 b - d3 0 21 | Be6 | Identify any White knight outposts on the board. | d5 | outposts |
8/8/7R/2k2P2/8/1B2r2p/8/4K3 w - - 1 54 | f3e3 | Is the Black king in check? | No | check |
8/8/8/8/8/8/4k1K1/5q2 w - - 0 82 | f2f1q | What is the material balance in this position? | Black is up 9 pawns of material | material |
rn3rk1/pp2bppp/2pp4/8/B3Pp2/2PP3q/PP1N1P1P/R2Q1RK1 w - - 4 14 | Qf3 | Are there any open files in this position? | No | files |
rnbq1rk1/ppp1ppbp/6p1/3P3n/3P4/2N2N2/PP2PPP1/R1BQKB1R b KQ - 0 7 | c6 | Identify any White knight outposts on the board. | None | outposts |
r1bqkb1r/3npp1p/pp1p1np1/2p5/P3P3/N2P1N2/1PP1BPPP/R1BQ1RK1 b kq - 1 8 | Bg7 | Is the b-file open, semi-open, or closed? | closed | files |
8/p2r1pk1/3n4/3p2r1/2pP4/4PP2/P3NKP1/1R5R w - - 0 41 | Nc3 | Is the move from b1 to b7 legal? | Yes | legality |
q7/5k2/3p4/4p3/4P1P1/5P2/5K2/8 b - - 1 48 | g1f2 | Identify any Black knight outposts on the board. | c5 | outposts |
7R/p2bkp1p/1p4p1/6P1/2B2P1P/r7/6K1/8 b - - 11 41 | c8h8 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5rk1/6pp/2R5/4n3/4NP2/5KP1/7P/8 w - - 10 37 | d7e5 | Is the White king in check? | Yes | check |
4r3/5kp1/p7/3N4/1Pp2K2/2Pb4/R3p3/4B3 b - - 5 60 | g5+ | What is the material balance in this position? | White is up 1 pawn of material | material |
8/p2r1pkp/1p4p1/2pP4/2P2P2/1P3KP1/P3R2P/5r2 w - - 0 30 | a1f1 | Is the White king in check? | Yes | check |
2r1k3/5RR1/4p3/p3Pp1K/5PP1/2r4P/8/8 w - - 3 53 | Kg6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3k2r/pp3b2/1qn2p2/1BQp1P1p/2P1p3/7P/PP4P1/K2R2NR w kq - 1 26 | Qd6 | Identify any Black knight outposts on the board. | d3, e4 | outposts |
4Q3/5pk1/p6p/4P1pP/1P2R3/P1q2P2/2p3PK/8 w - - 1 37 | f4 | What piece is on f3? | White Pawn | occupancy |
1r5k/6bp/pq1p4/5p2/5p2/PrP2N1P/1P1Q1RP1/R5K1 w - - 3 28 | Re1 | Does White have any isolated pawns? | No | structure |
2b2r2/7k/pp1b1q1p/6p1/3PppP1/1B5P/PP3P2/R1Q1R1K1 b - - 0 28 | Bb7 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
1nqr1r2/1bp2p1k/p4bp1/1p1P1N2/n7/7P/PPBB1PP1/R2QR1K1 w - - 0 23 | Ne7 | Is the Black king in check? | No | check |
8/1p1k2K1/pP6/8/P4p2/8/8/6B1 w - - 1 46 | Kf7 | What piece is on d7? | Black King | occupancy |
rn1b1k2/1q6/2p1Q1p1/p3p2p/P3P3/2P1B2P/1P4PK/8 w - - 0 35 | Bh6+ | Does White have any isolated pawns? | Yes: e4 | structure |
4r1k1/pb3pp1/7p/qpbp4/1p1N3B/1P1QPP2/P5PP/1K5R b - - 1 24 | Qb6 | What piece is on a1? | Empty | occupancy |
r2qk1nr/ppp2pb1/2npb1p1/4p2p/2P1P2P/2N2PP1/PP1PN1B1/R1BQK2R w KQkq - 1 9 | d3 | Does White have any passed pawns? | No | structure |
6k1/p4bp1/5q1p/3r4/3Npp2/PPQ3P1/3R1P1P/6K1 b - - 0 30 | Kh7 | Is the move from f7 to h5 legal? | Yes | legality |
2kr1b1r/ppq3pp/2p2p2/4nb2/P4B2/1QN3P1/1P2PPBP/R4RK1 b - - 1 14 | Qf7 | Does White have any isolated pawns? | No | structure |
r4rk1/pp1nbpp1/1qp1p2p/3nN2P/1P1PN3/P1PQ4/3B1PP1/R3R1K1 b - - 4 19 | Nxe5 | Is the move from d7 to f1 legal? | No | legality |
rnb2b1r/ppk2ppp/2p5/4q1B1/4n3/8/PPP2PPP/2KR1BNR w - - 2 11 | Bd8# | What is the material balance in this position? | Black is up 12 pawns of material | material |
8/8/8/8/2K5/2Q5/3p4/3k4 w - - 50 27 | Kd3 | Are there any open files in this position? | Yes: a, b, c, e, f, g, h | files |
2r3k1/2q2ppp/1p2p3/2n2n2/1Q6/P2NPBP1/5P1P/3R2K1 b - - 2 26 | h6 | Does White have any isolated pawns? | Yes: a3 | structure |
rn1qkb1r/ppp2ppp/4pnb1/3p4/3P1BPP/2N2P2/PPP1P3/R2QKBNR b KQkq - 0 6 | h6 | Does Black have any passed pawns? | No | structure |
r3kb1r/1pq2ppp/p2p1n2/n4b2/4P3/2N1B3/PPP1B1PP/R2Q1RK1 w kq - 0 12 | Rxf5 | Does White have any isolated pawns? | Yes: e4 | structure |
r5r1/ppBbkp2/7p/6p1/4Pn2/P1PB3P/1PP2RPK/R7 b - - 2 19 | Ne6 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
1r1q1r1k/6pp/p1npb3/3Np1b1/1pP1Pp2/1P1Q1B2/P1N2PPP/3R1RK1 w - - 0 19 | a3 | Is the move from f3 to d1 legal? | No | legality |
r1b1k1nr/pppp1ppp/8/4b3/4P2q/2NB4/PPP2PPP/R1BQK2R w KQkq - 2 8 | Nd5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r1bq1rk1/pppnbpnp/3p2pB/3Pp3/2P1P3/2NB1N1P/PP3PP1/R2Q1RK1 w - - 2 12 | Qd2 | Is the move from h6 to h4 legal? | No | legality |
2r1qr1k/1pp2pbp/pnn3p1/3P4/4p3/NB2PQ1P/PP1B1PP1/2RR2K1 w - - 0 18 | Qf4 | Does Black have any passed pawns? | No | structure |
r1q1r1k1/pp3ppp/2p2n2/3n4/2QN2b1/1N4P1/PP1RPPBP/R5K1 w - - 6 16 | Nc5 | Is the move from h2 to d4 legal? | No | legality |
r1q3k1/5rb1/p6p/1pp5/4Qp2/2P2N1P/1P3PP1/3RR1K1 w - - 0 26 | Rd6 | Identify any White knight outposts on the board. | None | outposts |
5rk1/pprP1p1p/3Npq2/3nN2Q/7b/8/P4PPP/3R1RK1 w - - 9 27 | Ne8 | What is the material balance in this position? | Equal | material |
r1b3k1/1p1nR1p1/p5Q1/q2p2p1/5Pn1/2N5/P1P3P1/5R1K b - - 2 27 | Qxc3 | Is the e-file open, semi-open, or closed? | open | files |
r1b1k1nr/p1pp3p/8/3Q1p1q/2P2bp1/5N2/PPP1B1PP/RN3K1R b kq - 1 14 | Rb8 | Is the move from h5 to f6 legal? | No | legality |
8/5Nkp/p7/nppP2q1/2P5/1P2N3/P6P/7K w - - 1 32 | Nxg5 | Does White have any passed pawns? | Yes: d5 | structure |
6k1/8/5p2/p1bn4/P7/1B6/1PP2P1P/3R3K w - - 0 29 | Rxd5 | Does White have any passed pawns? | Yes: c2, h2 | structure |
r3k3/1p4rp/p1n1p3/2B2p2/3Pp3/P3K1P1/5P1P/2R4R w q - 2 23 | h3 | Does White have any isolated pawns? | Yes: a3, d4 | structure |
3r1rk1/pb3p1p/1p4pQ/n4N2/8/7R/P1P2PPP/q4BK1 b - - 1 23 | Qxf1+ | Identify any White knight outposts on the board. | None | outposts |
r1bqk2r/p4ppp/2p1p1n1/3pP3/1bP5/2NB4/PP3PPP/R1BQ1RK1 w kq - 4 11 | f4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
3k4/R7/3B3p/6p1/8/1b1p4/4r1PP/3K4 w - - 5 38 | c4b3 | Is the White king in check? | Yes | check |
r3rq2/1b3pbk/p2p2p1/1pnPn1Bp/P1p1PR2/2P3NP/1PBQ2PN/5RK1 w - - 0 27 | Nxh5 | What is the material balance in this position? | Equal | material |
r1b1kb1r/3n1p2/p1N1p3/1pq1P1p1/5BQp/1PN5/1PP3PP/2KR3R w kq - 1 18 | Ne4 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
r2nk2r/pppq2bp/3pbnp1/1P2pp2/P1P5/2NP1NP1/4PPBP/1RBQ1RK1 b kq - 0 11 | h6 | Is the g-file open, semi-open, or closed? | closed | files |
r6b/pbq1k1r1/n1p4N/4p1BQ/4P3/1BN5/PPP3PP/3R1RK1 b - - 6 28 | e3g5 | Is the Black king in check? | Yes | check |
8/1p4k1/5Pp1/p4p2/2P2P2/1P1K4/P3N2b/8 b - - 0 42 | Kxf6 | What is the material balance in this position? | White is up 1 pawn of material | material |
2krr3/8/Q6p/3q1p2/1P3BPp/2Pp3K/P7/4RR2 b - - 4 38 | a4a6 | Is the White king in check? | No | check |
8/5B2/3NRk2/1p6/p1pP2r1/P1P5/1P4PP/7K b - - 6 45 | e7e6 | Is the Black king in check? | Yes | check |
rnb1kbnr/p2q1ppp/1pp1p3/3pP1B1/3P2Q1/2NB4/PPP2PPP/R3K1NR b KQkq - 1 8 | Ba6 | What is the material balance in this position? | Equal | material |
8/kp6/p7/7Q/Pb4p1/1P4P1/1r1r3P/5R1K w - - 14 42 | c2b2 | What is the material balance in this position? | White is up 2 pawns of material | material |
3r1rk1/pp3p2/5bp1/2qpn3/3N4/2N1P3/PP2QPP1/3R2KR b - - 7 19 | Kg7 | What piece is on f1? | Empty | occupancy |
r1b1k2r/1pqpbp1p/p1n1pp2/8/8/2N3P1/PPP2PBP/R1BQR1K1 w kq - 0 12 | Qg4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/1p1k2r1/pR6/P3pb2/2P5/3PNP2/2KN2r1/8 b - - 0 60 | Kc7 | Identify any White knight outposts on the board. | e4, g4 | outposts |
3r2k1/p1r2ppp/1pbb4/8/2pPq3/4PP2/PBR1Q1PP/3R1NK1 b - - 0 20 | Qg6 | What is the material balance in this position? | Equal | material |
6k1/6p1/p2p4/1pp5/4P2P/P2P2K1/1P2n1P1/5r2 w - - 1 33 | d4e2 | Is the White king in check? | Yes | check |
8/p7/5R2/p1p1rp2/2k2P2/K7/5P2/8 w - - 0 49 | fxe5 | Does White have any isolated pawns? | Yes: f2, f4 | structure |
r1b1k3/1p3p2/p1p5/2b3p1/4P1p1/3B4/PqP1N1PK/R3QR2 b - - 0 2 | Qh8+ | What is the material balance in this position? | White is up 3 pawns of material | material |
8/8/4K2k/8/5pRp/6n1/6P1/8 w - - 0 74 | Rxh4+ | Is the move from e6 to a6 legal? | No | legality |
r4rk1/2qnbppp/p1p1p2n/Np2P3/3Pb1P1/5N1P/PP1BBP2/2RQ1RK1 w - - 2 17 | b4 | What piece is on f6? | Empty | occupancy |
5k2/8/6p1/2R1p2p/2B2r1P/4KP2/8/8 w - - 0 63 | Bd3 | Is the move from c5 to c7 legal? | Yes | legality |
8/6kp/N5p1/8/5PP1/3r2KP/8/8 w - - 3 52 | d2d3 | Is the Black king in check? | No | check |
5r2/7k/1p1p2p1/pPpP2N1/P1P1p1P1/7P/4n1K1/8 b - - 1 44 | f3g5 | Is the Black king in check? | Yes | check |
r2r4/pp3p1p/5k2/4pN2/8/4B3/PP3PPP/5RK1 w - - 1 21 | g4 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
r3k2r/p1pn1ppp/1p6/1Q1p4/1B1PqP2/7P/P6P/4KB2 w kq - 4 18 | h1e4 | Is the Black king in check? | No | check |
r2q1rk1/pppnnpb1/3p2pp/3Pp3/2P1P3/2N1BN2/PP3PPP/R2Q1RK1 w - - 0 12 | Ne1 | What piece is on g8? | Black King | occupancy |
r5k1/1b1q1ppp/pB1b4/P2rp3/1PR2P2/2P1R3/4BQPP/6K1 w - - 1 28 | f5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2b5/pp3kp1/4q1n1/2b1p2Q/4B3/1P5P/PBP2rP1/4R2K w - - 0 26 | Bxe5 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
k7/P6p/1K4p1/1N2bp2/4p3/4P1P1/5P1P/8 w - - 1 52 | Ka6 | What piece is on c6? | Empty | occupancy |
1r1qr1k1/1pp2pp1/1nn2bbp/1N6/p1PPp3/P3B1PP/1PQ2PBK/3RR1N1 w - - 0 22 | Ne2 | What is the material balance in this position? | Equal | material |
8/8/7p/p2kB1p1/1p2R1P1/1Pbp3K/r6P/4R3 b - - 0 42 | d2 | Is the move from d5 to c6 legal? | Yes | legality |
3r4/BPk3pp/K3b3/pB2Pp2/8/2P5/PP4PP/7q w - - 4 26 | Bb6+ | Does Black have any isolated pawns? | Yes: a5 | structure |
r2qr1k1/1b1n1pbp/p1pp1np1/1p2p3/P2PP3/2PB1NNP/1P3PP1/R1BQR1K1 w - - 0 17 | Be3 | Identify any White knight outposts on the board. | None | outposts |
2r1k1r1/3b4/Q7/2bP1pp1/1p6/8/PP3PP1/K3R3 b - - 0 27 | Kf7 | Identify any White knight outposts on the board. | c6, e6 | outposts |
7k/4n1bp/2p3p1/4pp2/1P1rP3/r1N1pP2/P3B1PP/RR4K1 w - - 3 24 | Rb3 | Is the move from c3 to d1 legal? | Yes | legality |
8/6kp/2rp1p2/p3pP2/1p2P3/P1P4P/1P1R1KP1/8 w - - 0 36 | axb4 | Identify any White knight outposts on the board. | None | outposts |
8/1p1k4/pB6/P3R2p/2r1PP2/5K2/8/4b3 b - - 1 51 | h4 | Does Black have any passed pawns? | Yes: h5 | structure |
2r3k1/pb3p1p/1p3n2/2qp2p1/PN6/BPn2P2/5KPP/R3R3 w - - 6 24 | c6c5 | Is the Black king in check? | No | check |
8/8/4k2p/1B6/P3PP1P/5K2/8/6r1 w - - 0 52 | a5 | Identify any White knight outposts on the board. | b5, d5, e5, f5 | outposts |
r7/pp2k1b1/5n2/3Nn1p1/8/PB3P2/1PPP2P1/R1B1K2R b Q - 0 30 | c3d5 | Is the Black king in check? | Yes | check |
r1bqk2r/pp1p1ppp/2p2n2/4p3/B2bP3/3P4/PPPN1PPP/R1BQ1RK1 b kq - 1 8 | d6 | Is the White king in check? | No | check |
2kr2r1/pp1b3p/2n1p1np/q2pP3/P1pN4/2P5/2PBBPP1/R2QR1K1 w - - 5 19 | Bg4 | Identify any Black knight outposts on the board. | c4 | outposts |
r5r1/ppp3kp/2b4q/6p1/8/2Q1R1P1/PPP2P1P/2KR4 b - - 3 26 | Kf8 | Identify any White knight outposts on the board. | None | outposts |
r2q1rk1/p3bppB/4pn2/8/2p2B1Q/5P2/PPP2P1P/3R1RK1 b - - 0 18 | Nxh7 | Identify any Black knight outposts on the board. | f5 | outposts |
r2q1rk1/pb3pp1/1p5p/n2pP3/8/5N2/P1BQ1PPP/R3R1K1 b - - 1 17 | Ba6 | What piece is on f6? | Empty | occupancy |
r1b1qr1k/pp3pb1/3p2Q1/2p2pB1/2B1N3/3P4/PPP3PP/R5K1 w - - 3 18 | Qh5+ | Does Black have any passed pawns? | No | structure |
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