fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rn2kbnr/ppp2ppp/3Np3/1b6/8/4PN2/PP1P1PPP/R1B1KB1R b KQkq - 2 8 | c4d6 | Is the White king in check? | No | check |
r6r/ppN2ppk/1nn5/5b2/5B2/6Q1/PqP2PPP/R4RK1 b - - 0 8 | Rac8 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
8/1Nk5/2n1rn2/1B1pp1p1/1P6/2R2P2/r5P1/3R2K1 w - - 4 35 | Na5 | Identify any Black knight outposts on the board. | d4 | outposts |
r1b2rk1/2q1bppp/p1np1n2/1pp1p3/3PP3/2P2N1P/PPBN1PP1/R1BQR1K1 w - - 3 13 | d5 | Identify any Black knight outposts on the board. | None | outposts |
8/7p/8/6p1/P7/rPR5/2K2k2/8 w - - 2 56 | Kb2 | Is the White king in check? | No | check |
rnbqk2r/1p3pp1/p1p4p/8/3Nn3/2P1B3/P1P1B1PP/3RQRK1 b kq - 1 13 | Bd7 | Are there any open files in this position? | Yes: d, e | files |
1q4k1/3b1ppp/1r1b1n2/p2p4/8/P3rP1P/1B1RNKP1/2QN3R b - - 1 22 | Re8 | Identify any White knight outposts on the board. | None | outposts |
8/8/6k1/3n2P1/6K1/8/7P/8 w - - 0 45 | h4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7k/p2PR2p/1p5b/1P6/8/3rP1Pp/P3K3/8 b - - 2 33 | Bg5 | Identify any White knight outposts on the board. | d4, f4, h4 | outposts |
r1bq1rk1/1ppnbppp/p1p5/4p3/3PP3/2N2N2/PPP2PPP/R1BQR1K1 b - - 0 9 | Bd6 | Is the move from a8 to b8 legal? | Yes | legality |
r1b2rk1/1pq1bppp/p1nppn2/8/3NP3/1BN1B3/PPP1QPPP/2KR3R w Kq - 0 1 | Rhg1 | Is the White king in check? | No | check |
5rk1/2p3pp/8/1p1p1r2/1P3P2/2P3N1/5K2/1RB5 b - - 1 31 | R5f6 | Does Black have any passed pawns? | Yes: h7 | structure |
1k1r2r1/pBbnqpp1/7p/1Pp1Pb1P/3P4/P3BQ2/5PP1/R4RK1 b - - 0 22 | cxd4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
2bq2k1/2pn2p1/r1p1p2p/p7/2Pp4/1P3QNP/P2B1PP1/R5K1 w - - 0 23 | Re1 | Identify any White knight outposts on the board. | a4 | outposts |
4brk1/pp2q1pp/4n3/3p2P1/1R6/1P3B2/P4P1P/R2Q2K1 w - - 1 24 | Rg4 | Identify any Black knight outposts on the board. | None | outposts |
r3kb1r/ppp2ppp/3pbq2/1B2n3/4P3/2N5/PPP1QPPP/R1B2RK1 b kq - 10 11 | c4b5 | Is the Black king in check? | Yes | check |
r1b1kb1r/1p3p2/pqnpp1p1/4n1Pp/4P3/1NN1B2P/PPP1BP2/R2QK2R b KQkq - 3 13 | Qc7 | What is the material balance in this position? | Equal | material |
rn1qkb1r/pp3pp1/4p1P1/2Pp4/6pP/2N2n2/PPP1NK2/R1BQ1B1R w kq - 0 13 | Nf4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
1rbq1rk1/2n2p1p/p4np1/1ppPp3/P4P2/2N1B1PP/1P6/R2QRBK1 w - - 0 22 | d6 | Does Black have any passed pawns? | No | structure |
8/4kp1p/1q1bpp2/1B6/3p4/6r1/PP1NQPb1/R1BR2K1 b - - 3 23 | Rg8 | Does White have any passed pawns? | Yes: a2, b2 | structure |
3k4/4B1p1/4Qp1p/8/P6q/1P3P2/K7/8 b - - 5 47 | a3e7 | Is the Black king in check? | Yes | check |
r2qkb1r/1b1p1pp1/p3pn1p/2p5/2n1P3/P2PBQ1P/1P1N1PP1/R3K1NR w KQkq - 0 12 | a5c4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r4rk1/1p1q2p1/p1n1p2p/3pP3/1P4Q1/P1N2n2/5PPP/2R2RK1 w - - 0 19 | d4f3 | Is the Black king in check? | No | check |
2Rr4/p3qp1k/1p3bpp/3R4/8/5N2/PPQ2PPP/6K1 b - - 0 24 | Rxd5 | What is the material balance in this position? | White is up 5 pawns of material | material |
r1bqr1k1/pppp1pp1/1bn2n1p/4p3/1PB1P3/P1NP1Q1N/2P2PPP/R1B1K2R w KQ - 1 9 | Be3 | Is the g-file open, semi-open, or closed? | closed | files |
4r1k1/6p1/p3br1p/1p1p1p2/3P1Q2/2P2NPq/PP3P1P/R3R1K1 w - - 0 22 | Kh1 | Is the move from e1 to d1 legal? | Yes | legality |
r3Rrk1/2p2ppp/p1Pb1n2/1p6/3Q4/1BPb4/PP1P1PPP/RNB3K1 b - - 0 16 | Raxe8 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/5p2/4p2p/P2q2p1/Q2P4/5N2/5PPP/R5K1 b - - 0 29 | b4a5 | What is the material balance in this position? | White is up 4 pawns of material | material |
2r1qrk1/p4pp1/1p1p1b1p/2pR4/8/PP2PBP1/3Q1P1P/3R2K1 w - - 0 22 | Rxd6 | Is the move from f2 to c8 legal? | No | legality |
r1bq1rk1/1pp1ppbp/p1np1np1/8/3PP3/2NBBN2/PPPQ1PPP/R3K2R w KQ - 2 8 | d5 | Is the move from e1 to g1 legal? | Yes | legality |
5Nk1/6n1/p3pq2/Pb5p/3p1rP1/6QP/3N1PB1/R5K1 b - - 0 36 | h4 | Identify any White knight outposts on the board. | h5 | outposts |
r1b4r/5k1p/p5p1/1pp1p3/5q1Q/2PR1Pp1/PP2B2P/3R2K1 w - - 0 28 | Rd7+ | What piece is on h7? | Black Pawn | occupancy |
r3r1k1/5pp1/2np3p/pp1q4/3P3N/1PP5/P2Q2PP/4RRK1 b - - 1 18 | a4 | What piece is on b7? | Empty | occupancy |
2kr1b1r/p1p1qppp/2p5/2P1n3/Q3N3/5P2/PP3P1P/R1B2RK1 w - - 3 15 | Bf4 | What piece is on b2? | White Pawn | occupancy |
8/ppp5/3kQ3/3P4/4P3/P7/1PP2Pq1/2KN4 b - - 3 33 | f7e6 | Is the Black king in check? | Yes | check |
6Q1/8/8/1k1K4/8/8/p7/8 b - - 0 5 | a1=Q | Does White have any passed pawns? | No | structure |
4B3/7k/3b3P/5KB1/5p2/8/8/8 w - - 3 68 | Bg6+ | Identify any Black knight outposts on the board. | e3, g3 | outposts |
6k1/5p2/p3p1p1/3n4/p1nP4/7R/K1P1R3/8 b - - 0 32 | Nf4 | Does White have any isolated pawns? | No | structure |
8/1ppk3p/p3r2p/4PP2/6P1/4R2P/PP4K1/8 b - - 0 33 | f4f5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qr1k1/1p3pb1/p5p1/2pPP1n1/P1p2P2/2N2B2/1P4K1/R2Q1R2 b - - 1 21 | Bxe5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4r1k1/5pP1/5P2/4PN1p/p1pp4/8/6PP/5R1K w - - 0 38 | e6 | Are there any open files in this position? | Yes: b | files |
2rq1rk1/pb1n1ppp/1p2p3/8/3PP3/1B3N2/P2Q1PPP/3RR1K1 b - - 5 15 | Nf6 | Identify any Black knight outposts on the board. | a5 | outposts |
r3qrk1/ppp2ppp/1n6/4b1BQ/3nN3/1B4P1/PPP2P1P/R4RK1 w - - 5 16 | Bf6 | Is the move from f1 to b1 legal? | Yes | legality |
2kr1bnr/ppp1pppp/8/8/2PBq3/8/PP2BPPP/RN1Q1RK1 b - - 4 11 | Qxd4 | Does White have any passed pawns? | No | structure |
r4rk1/pp2pp1p/6pB/2Pp1b2/R7/2b2N1P/P3BPP1/R5K1 b - - 1 16 | Bxa1 | Are there any open files in this position? | No | files |
r1r2bk1/1p2np2/p2p1nqp/3PpNP1/2P1P1Q1/1B4P1/P2B1P2/2R2RK1 w - - 1 30 | Qe2 | What is the material balance in this position? | White is up 1 pawn of material | material |
1k6/p1rq4/Q1p3p1/4PpP1/P1RPp3/4n3/1B6/1K6 w - - 0 34 | d5e3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4b2k/6rp/p3pQ2/3pPp2/2pP4/4P1R1/n1q3PP/5BK1 b - - 5 30 | Bg6 | Is the move from c4 to b4 legal? | No | legality |
r1br4/1p2np1p/4p1p1/pqp1B1k1/2N1R3/1P1P2P1/1PP2PBP/R5K1 w - - 2 5 | Bg7 | What piece is on d4? | Empty | occupancy |
6k1/6p1/5p2/4rK2/8/7P/7n/3R4 w - - 4 46 | e8e5 | Is the Black king in check? | No | check |
1r3r1k/bpp1Npp1/p3nn1p/2p1B3/bPN1B3/P2PP1PP/5P1K/R4R2 w - - 1 23 | Bf5 | Is the White king in check? | No | check |
rn2kbnr/pp2pppp/2p5/3PNb2/8/1P4P1/1P1PPP1P/RNB1KB1R b KQkq - 0 7 | Be4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4r2/2p1qpk1/1p1p1p1p/pP1PpR2/4P3/2P1P2P/1P1N2P1/3Q2K1 w - - 2 31 | Nf3 | Does Black have any isolated pawns? | Yes: h6 | structure |
r1b2rk1/p1qn1ppp/1p1bp3/6B1/3PR3/3B1N2/PP3PPP/R2Q2K1 b - - 0 13 | Bb7 | What is the material balance in this position? | Equal | material |
3r1k2/p4rpp/2p5/5pRP/2pP1R2/2K5/PP3P2/8 w - - 0 34 | Rgxf5 | Is the move from b2 to e5 legal? | No | legality |
N4Q2/pp1k1R2/3p4/2pBp3/3PP2b/3P4/PP5r/R5K1 b - - 1 22 | f1f7 | Is the White king in check? | No | check |
8/8/4k3/8/4K3/8/4P3/8 w - - 0 1 | e3 | What is the material balance in this position? | White is up 1 pawn of material | material |
6r1/pp3k2/3p4/5Bp1/4P3/8/PPPB1PPP/5bK1 w - - 0 30 | Kxf1 | Are there any open files in this position? | No | files |
r1k4r/ppp2R2/5Q1p/2qPpB2/8/4P3/PPP3P1/3R2K1 b - - 6 27 | d3f5 | Identify any White knight outposts on the board. | e6 | outposts |
1r4k1/5p1p/p4p2/8/2B5/1P6/P1Pr1PPK/4R3 w - - 1 23 | Bd3 | Does White have any passed pawns? | Yes: c2 | structure |
5rk1/6p1/2Q2n1p/3b3q/p2P4/P1P5/3B1PPP/R3RNK1 w - - 1 3 | Qxa4 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/1p6/1qp4Q/p3Pp2/2P2P1P/1P4P1/P5BK/8 w - - 5 34 | e6 | What piece is on g2? | White Bishop | occupancy |
r1b1k2r/2q1bppp/p1nppn2/1p6/4PP2/PNN1BB2/1PP3PP/R2Q1RK1 b kq - 1 12 | Rb8 | What piece is on g3? | Empty | occupancy |
r3r3/p2n1k1p/bqp2ppb/8/1p1P1P1B/1Q3N2/PPP1N1PP/R4RK1 b - - 8 18 | Kg7 | Is the White king in check? | No | check |
2r3k1/6pp/8/3n1P2/p3n3/P2NP2P/1P1B2R1/4K3 w - - 0 34 | Nf2 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r1b4r/5k1p/p4qpQ/1pp1p3/6p1/2PR1P2/PP2B2P/3R2K1 b - - 0 26 | c4 | Identify any Black knight outposts on the board. | f3, f4, f5, h3, h5 | outposts |
rn1qkbnr/p1ppp2p/1p4P1/7Q/3P4/3B4/PPP2PbP/RNB1K1NR b KQkq - 0 6 | Nf6 | Does White have any isolated pawns? | No | structure |
3r1rk1/bpq2pB1/p1b1p3/2P4Q/1P6/P7/5PPP/2R2RK1 b - - 0 20 | f6 | Is the move from f7 to b1 legal? | No | legality |
r2q1rk1/pb6/2n1pbpp/1p6/2pPQ3/2P5/PPB2PPP/R1B2RK1 w - - 0 16 | Qxg6+ | What piece is on a1? | White Rook | occupancy |
3r4/pb3pkp/1p2p1p1/1B2b2P/Pq1nP3/3Q4/4NPP1/2RR2K1 w - - 1 22 | Kf1 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
rnbqkb1r/1p3ppp/p3pn2/2p5/2BP4/4PN2/PP3PPP/RNBQ1RK1 w kq - 0 7 | Qe2 | Is the White king in check? | No | check |
5rk1/3n1ppp/2p2n2/q2ppb2/p2P4/2bBP2P/5PP1/2RQK1NR w K - 0 21 | b4c3 | Is the White king in check? | Yes | check |
6k1/1p3pp1/2p1p2p/2b1P2P/6P1/P7/KPQ5/2B3q1 w - - 0 38 | Bf4 | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
2b5/p4k1p/1p4p1/1P1p1p2/PBnP1P2/6P1/4B2P/4K3 b - - 1 42 | a6 | Does White have any isolated pawns? | Yes: d4 | structure |
4r1k1/pn3qp1/1p1rb2p/2p1R3/1P6/P1Q1PPP1/1B2BKP1/3R4 w - - 2 28 | Bc4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r1b1kb1r/1p1n1ppp/p2ppn2/q5B1/2BNP3/2N5/PPPQ1PPP/R3K2R w KQkq - 0 9 | O-O | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r2qk2r/5p2/p1p1p1pb/3pPn1p/2P2P2/8/PP1QNBPP/3R1RK1 w kq - 1 19 | Bc5 | Are there any open files in this position? | No | files |
r4b1r/NQp3pp/4kn2/8/4pq2/8/PPPP2PP/R1B1K2R b KQ - 0 13 | Bd6 | Is the White king in check? | No | check |
1r3r2/5p1k/p2p1q1p/2b1nPp1/p7/6RP/B1R2PPK/2BQ4 w - - 1 29 | Qh5 | Does Black have any passed pawns? | Yes: a4, a6, d6 | structure |
4r1k1/ppq3bp/2n1rnp1/5p2/2P2P2/4BBN1/PP3K1P/RQ2R3 b - - 3 21 | Rxe3 | What piece is on c7? | Black Queen | occupancy |
r2qkb1r/1pnB1pp1/p3p2p/2pp1b2/3P1B2/P1N1PN2/1PP2PPP/R2QR1K1 b kq - 0 12 | b5d7 | Is the Black king in check? | Yes | check |
4Q3/p4Pk1/4b3/1pp5/5KPp/P3N3/2P5/7q b - - 2 38 | Bxf7 | Are there any open files in this position? | Yes: d, e | files |
rn1r2k1/p1bq1ppp/1p6/1Q1p2B1/P2P4/2P2NP1/5P1P/R3R1K1 b - - 2 18 | f6 | Is the e-file open, semi-open, or closed? | open | files |
R7/5pkp/8/2r2K2/p2b2PP/8/P7/8 w - - 1 47 | c4c5 | Is the White king in check? | Yes | check |
rr4k1/pQ4pp/3pnq2/b3p3/P3P3/B1PP4/5PPP/RN3RK1 w - - 2 18 | f8b8 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1b3r1/pp2k1pp/2pNp3/5p2/2PQ1P2/qP2P3/P5PK/3R1R2 b - - 4 18 | b6 | Does White have any isolated pawns? | No | structure |
4q3/1p4pk/p4pbp/P1Bp2n1/1P6/4QPPB/4PK1P/8 w - - 1 37 | Bg2 | Are there any open files in this position? | Yes: c | files |
5rk1/pQ4p1/4r2p/3p4/4b2b/4qPP1/PBP4P/R4RK1 w - - 1 23 | g5e3 | Is the White king in check? | Yes | check |
r3kb1r/Nppn2pp/8/1q6/3Pp3/8/PPP3PP/R1B1K2R w KQkq - 0 14 | Nxb5 | What piece is on h8? | Black Rook | occupancy |
1r6/2k5/2R1p1p1/1PprP2p/5P2/1PR3KP/6P1/8 b - - 5 32 | a6c6 | Is the Black king in check? | Yes | check |
r2Qkb1r/ppp2ppp/2b5/4P3/4p3/4B2P/PPP2PP1/R3KB1R b KQkq - 0 11 | d1d8 | Is the Black king in check? | Yes | check |
r2q1rk1/1p1bn2p/2n2bp1/pNPpp3/P2N4/2P5/1PB2PPP/R1BQ1RK1 w - - 0 16 | Nb3 | What piece is on d8? | Black Queen | occupancy |
r5r1/2p1qpk1/npbppn2/p5p1/P1PP4/2P1P1B1/3N1PPR/1R1QKB2 w - - 8 18 | c5 | Is the move from g3 to h4 legal? | Yes | legality |
2r3k1/pb3p1p/4nqp1/2pr4/2Np2Q1/1P2P3/P2R1PPP/2R2BK1 w - - 2 27 | e4 | Are there any open files in this position? | No | files |
3rr1k1/2q1bppp/p1n2n2/1p2pPN1/2p5/2P4P/PPB1QPP1/R1B1R1K1 b - - 2 19 | Nb8 | What piece is on c4? | Black Pawn | occupancy |
8/8/1p1q3p/2p2p2/1PP5/P1Q1PpP1/5Pk1/4K3 b - - 0 40 | Qe7 | Are there any open files in this position? | Yes: d | files |
1k6/8/1p6/1R6/Pp1PKp1P/1r3P2/8/8 w - - 0 51 | Kxf4 | Is the move from e4 to d5 legal? | Yes | legality |
r5k1/pp5p/1np3p1/8/2P1B3/1P1Nb3/P5KP/3R4 b - - 0 29 | Nd7 | Is the move from b6 to d7 legal? | Yes | legality |
1q5k/3n1Q1p/8/p1pP4/Pp2r3/1P5B/7P/2R4K w - - 0 34 | Bxd7 | Is the move from a4 to g4 legal? | No | legality |
rn2kb1r/ppp1qppp/4b1n1/4N3/2BP4/8/PPP2PPP/1NBQR1K1 w kq - 1 9 | Nxf7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
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