fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3q1r2/3bp1k1/3p1np1/ppr4n/3NP2P/1BN5/PPPQ4/2K3RR w - - 0 21 | Be6 | Identify any White knight outposts on the board. | g5 | outposts |
r2r2k1/4qpbp/1pn1p1p1/1QPp4/3P4/pPB1N1P1/P4P1P/2RR2K1 b - - 1 21 | Na7 | Is the move from g6 to e2 legal? | No | legality |
r2r1k2/p1qP1pbp/1p4pN/2p4R/6Q1/4B1P1/P4P1P/3R2K1 b - - 0 26 | gxh5 | Is the move from c7 to c8 legal? | Yes | legality |
1r2k2r/Qpqn1ppp/2p1pn2/2b5/8/2BP1BP1/P2NPP1P/1R2K2R w Kk - 1 16 | Qa5 | Is the move from a7 to b7 legal? | Yes | legality |
2rq1k1r/1pN1bp2/p1n1p3/2np4/5B1P/8/PPP1QPB1/1K1R3R w - - 2 22 | Bxd5 | Is the Black king in check? | No | check |
rr2k3/1N3pp1/p3b1np/3p4/1B6/6P1/PPP3BP/2K1R3 w - - 4 25 | Bxd5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r6r/1p1kq2p/p1nbp3/5p1Q/3PN3/P7/1P1B2PP/R4RK1 w - - 2 20 | d5 | Does White have any isolated pawns? | Yes: d4 | structure |
3r1bk1/ppq2ppp/2p1n3/8/4B1Q1/1P3NPP/P1P2P1K/3R4 w - - 0 1 | Qh5 | Is the move from f2 to e3 legal? | No | legality |
2kr3r/pp2qppp/2n2n2/2p1p3/3pPP2/3P2PP/PPPNQ1B1/R4RK1 w - - 1 15 | a3 | Are there any open files in this position? | No | files |
r3k2r/pQ1bp2p/n2p1np1/2pP4/2P5/2qB2N1/P3KPPP/R1B4R b kq - 1 13 | Nb4 | Is the White king in check? | No | check |
5k1r/2q1p3/p1bpPn2/2p3Q1/2p5/2N5/Pr2B1PP/R4RK1 w - - 2 26 | Rxf6+ | Is the move from f1 to f5 legal? | Yes | legality |
r2qk2r/ppp1bppp/3pp1n1/8/3PP1n1/1B2B3/PPP1N2P/RN1Q1RK1 w kq - 0 12 | f6g4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/1pqb1ppp/p2ppn2/8/N1P1P3/3B4/PP3PPP/2RQ1R1K w - - 3 15 | Nc3 | Are there any open files in this position? | No | files |
r1b2rk1/pp3ppp/2n5/1p1N4/1b5q/6P1/PB2NP1P/1R1Q1RK1 b - - 0 14 | Qg4 | Does White have any passed pawns? | No | structure |
r1b1kb1r/pp2pppp/2n5/2q5/Q3pB2/2P5/PP3PPP/R3KBNR w KQkq - 2 9 | Qxe4 | What piece is on b2? | White Pawn | occupancy |
8/5npk/7p/2p2b2/8/3PR3/6P1/6K1 b - - 0 46 | Kg6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rnbqkb1r/pp1p1ppp/2p2n2/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 | d4 | Is the b-file open, semi-open, or closed? | closed | files |
r1bq1rk1/ppnn3p/3p4/2pP1pN1/2PbpP2/P1N5/1PQBB1PP/R3R1K1 w - - 2 17 | Kh1 | Identify any White knight outposts on the board. | None | outposts |
2rkbbR1/8/5p2/1P1Q4/P2P4/2P1P3/3B3P/R3K3 b Q - 4 34 | h5d5 | Is the White king in check? | No | check |
r3k2r/1b1qbp2/pp1pp2p/2p3p1/2NPP3/2P2NP1/PP4PP/R2Q1RK1 b kq - 1 15 | Qb5 | Are there any open files in this position? | No | files |
r3n1k1/p6p/1p2p3/2p1p3/2P1P1q1/3QBrPp/PP1RN2K/6R1 b - - 3 26 | Nf6 | What piece is on e3? | White Bishop | occupancy |
1rb1k2r/p4pb1/2npp1pp/1pp5/1P2P3/P1qPB1P1/2PQ1PBP/1R3RK1 w k - 0 16 | e5 | Does White have any passed pawns? | No | structure |
r2q1r1k/p5pp/2pbQn2/8/3P1p2/8/PPP3PP/RNB2RK1 b - - 2 13 | f3 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
r1b2rk1/1p3pp1/3Pp2p/q1P5/4N3/p2P4/Pb1NQPPP/R4RK1 b - - 0 17 | Qb5 | What piece is on g4? | Empty | occupancy |
rnbqkb1r/1p3ppp/p3pn2/2p5/3P4/1B2PN2/PP3PPP/RNBQ1RK1 b kq - 1 7 | Nc6 | Is the move from e8 to d7 legal? | Yes | legality |
rnbq1rk1/p2n1ppp/1ppbp3/6P1/1PB4P/4PN2/PBQP1P2/RN2K2R w KQ - 1 12 | Bd3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/1k3pp1/p6p/1p6/3R4/P5K1/1Pr4P/8 b - - 0 41 | Rc7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2r3k1/r3Pp2/p2P1bq1/1ppBpN1R/4P1P1/5P2/P2B2K1/2R5 w - - 1 40 | Rh6 | Does Black have any passed pawns? | Yes: c5 | structure |
3q4/pp3pkp/5np1/2r1rPB1/P1n5/1BP2P2/5QPP/3R1R1K b - - 6 21 | Qc7 | Is the move from e5 to c5 legal? | No | legality |
r2qr1k1/2pb1pp1/1p1b3p/1P1p4/3P4/2NQPN1P/5PP1/R4RK1 b - - 0 23 | Be6 | Identify any Black knight outposts on the board. | None | outposts |
r3k1nr/pp1n1pp1/2p1p2p/q6P/1b1P4/2PQ1NN1/PP1B1PP1/R3K2R b KQkq - 0 13 | Be7 | Does White have any isolated pawns? | No | structure |
r2q1rk1/ppp2pp1/2np1n1p/2b1p3/2P1P1b1/2NPBN2/PP2BPPP/R2Q1RK1 b - - 1 9 | Bb6 | What piece is on b5? | Empty | occupancy |
rnbqkb1r/ppp2ppp/3p1n2/4p3/3PP3/3B4/PPP2PPP/RNBQK1NR w KQkq - 0 4 | c3 | What is the material balance in this position? | Equal | material |
r1bqk2r/pppp1ppp/2n5/2bN4/4n3/2p2N2/PP2BPPP/R1BQ1RK1 w kq - 0 9 | Bd3 | Is the move from f3 to d3 legal? | No | legality |
r4r2/pp3ppk/2p5/8/7R/4n1P1/PP5P/1K6 b - - 1 25 | d4h4 | Is the Black king in check? | Yes | check |
r4r1k/1p1n1p1p/p2q1p2/3N1Q2/1b1P4/6P1/PP3PBP/R4RK1 w - - 5 18 | Be4 | Is the move from f5 to f4 legal? | Yes | legality |
r3nrk1/2qbbp1p/p1np2p1/1pp1p3/3PP3/2P1BN1P/PPB2PP1/2RQRNK1 w - - 0 16 | Bh6 | Are there any open files in this position? | No | files |
2k5/ppq1bp1p/2n5/2n1pP2/2P5/4P3/PB4BP/RN1rK1NR w KQ - 0 17 | d8d1 | Is the White king in check? | Yes | check |
8/k2Q4/1qP3p1/p7/P2n4/8/6K1/8 b - - 12 71 | c8d7 | Is the Black king in check? | Yes | check |
5k2/1n2rP1R/p3p3/1pp1P3/nP1p2P1/P2P3P/2P5/4R1K1 w - - 3 49 | Rf1 | Is the move from h7 to h5 legal? | Yes | legality |
2r5/5N2/1p5R/p4k2/8/2b2K2/4P3/8 w - - 4 43 | Nd6+ | Is the move from f3 to g2 legal? | Yes | legality |
8/k1K5/7p/8/8/8/6P1/8 b - - 1 1 | h5 | Is the White king in check? | No | check |
r1q2r2/bpp1k1p1/2npbnBp/p3p3/P3P2N/2PPB3/1P1N1PPP/R2Q1RK1 b - - 6 14 | b3d1 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r2kb1r/p2n1pp1/4p1p1/8/3Np1P1/8/PPP2PKP/R1B2R2 b k - 1 19 | Bc5 | Are there any open files in this position? | Yes: d | files |
r5k1/ppq2p1p/1n4p1/2bPn3/4NQ2/1B3P2/PP5P/R3K1R1 w Q - 0 21 | Ke2 | What piece is on e5? | Black Knight | occupancy |
r1bq2k1/pp1n2pp/2pbpr2/3p1p2/2PPn3/PPNBPN2/1BQ2PPP/R3R1K1 b - - 4 12 | Rh6 | What piece is on g2? | White Pawn | occupancy |
r2qkb1r/pp3ppp/2p2n2/8/4P1P1/2Pn3P/PP2QP2/RN3K1R w kq - 1 13 | c1d3 | What is the material balance in this position? | Black is up 5 pawns of material | material |
k1r5/ppq3p1/2n4p/2Q5/3N4/2P5/P1P3P1/5RK1 b - - 12 28 | Nb8 | What is the material balance in this position? | Equal | material |
1k1r3r/pppq1p2/6p1/3pPn1p/1P1N1P2/2PQ4/P5PP/R4RK1 w - - 0 18 | b5 | Does White have any passed pawns? | No | structure |
8/5qpk/1n2b2p/5p2/1B6/P3P2P/2Q2PB1/6K1 w - - 2 41 | Qc5 | Does Black have any passed pawns? | No | structure |
rn1qkb1r/pb2pppp/1p1p1n2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 b kq - 1 6 | e5 | Is the Black king in check? | No | check |
rnbq1rk1/ppp2ppp/4pn2/8/2BP4/P1P1P3/5PPP/R1BQK1NR b KQ - 0 8 | c5 | Is the move from c8 to c3 legal? | No | legality |
rn1q1rk1/pp2ppbp/2p2np1/8/2QPPBb1/2N2N2/PP2BPPP/R3K2R b KQ - 3 9 | Nfd7 | Are there any open files in this position? | No | files |
4r1k1/1pq3pp/n1p2p2/p3n3/2P1b3/B2P2P1/P3P1BP/2RQ2K1 w - - 0 23 | Bxe4 | Is the move from d3 to d8 legal? | No | legality |
rn1q1rk1/1ppbnpp1/p2p1b1p/3Pp3/4P3/2P1B3/PPBN1PPP/R2QNRK1 b - - 2 12 | a5 | Are there any open files in this position? | No | files |
rn1q1rk1/3b1ppp/2p1p3/pp2N3/PnpPP3/N5P1/1P1Q1PBP/R4RK1 w - - 3 14 | Rfd1 | Are there any open files in this position? | No | files |
2q5/p5p1/1p2p1k1/4np2/8/2B5/PP3P2/6K1 w - - 0 33 | f6g6 | What is the material balance in this position? | Black is up 11 pawns of material | material |
r1r3k1/1pqbpp2/p1np1bp1/7p/4PP1P/1NP1B1Q1/PP4P1/1K1R1B1R w - - 0 18 | Be2 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1bqkb1r/pp1ppppp/2n2n2/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4 | Bxc6 | Is the move from f2 to h2 legal? | No | legality |
2B2r1k/Q6P/6q1/p3p1n1/8/np2P3/PP3PP1/1K1R3R w - - 5 30 | c2a3 | Is the White king in check? | Yes | check |
1r2B2k/6b1/p5Qp/1p2q3/P7/4p1R1/1PP3PP/6BK b - - 0 31 | e2 | Identify any White knight outposts on the board. | None | outposts |
rnbqr1k1/1pp2pp1/7p/pP1Pp3/3b4/P1NP1Q1N/2PB1PPP/R3K2R b KQ - 0 12 | Nd7 | Is the move from d8 to d5 legal? | Yes | legality |
8/3R1n1p/5k2/5B2/3P1PpK/2r5/5P2/8 w - - 1 108 | Bxg4 | Is the move from f5 to h8 legal? | No | legality |
7r/p5pp/5bk1/8/6q1/7Q/PPP1KP2/8 w - - 0 36 | g1g4 | Is the Black king in check? | No | check |
6k1/6pp/3p4/4p3/p1PpP3/P2R3P/1r4r1/1K1R4 w - - 3 29 | a2b2 | Is the White king in check? | Yes | check |
r3k2r/ppp2p2/2n1b1pn/4Pq1p/1B1P1P2/3B2P1/PP5P/RN1QK1NR b KQkq - 2 12 | e2d3 | What is the material balance in this position? | White is up 4 pawns of material | material |
8/5pk1/8/3p4/3P4/2n3P1/R1K5/8 b - - 2 61 | Nxa2 | Does Black have any isolated pawns? | Yes: d5, f7 | structure |
r2qk2r/pp3ppp/2pp1b2/3Pp3/PPB1P1b1/2N2NP1/2P2PnP/R1KQ3R b kq - 4 13 | Bg5+ | Is the move from g2 to e1 legal? | Yes | legality |
1k4b1/2p2p1r/1pPp1Bp1/1P1P2Pp/3K3P/4N3/8/8 w - - 0 1 | Nc2 | What piece is on c2? | Empty | occupancy |
r7/p2k2p1/1pbqn2p/1B3Q2/8/8/PPP2PPP/4R2K w - - 0 28 | Rxe6 | Identify any White knight outposts on the board. | None | outposts |
r1bqkbnr/1p1npppp/p2p4/1Bp5/P3P3/5N2/1PPP1PPP/RNBQK2R w KQkq - 0 5 | Be2 | What piece is on g4? | Empty | occupancy |
r3nrk1/pp1bNppp/8/4P3/3P1Q2/5B2/PPq3PP/R4RK1 b - - 2 19 | d5e7 | Is the Black king in check? | Yes | check |
4rrk1/pb1qnpb1/6pp/3pn3/1p1PPNP1/6QP/1PP2RB1/2BN1R1K b - - 0 26 | N5c6 | What is the material balance in this position? | Equal | material |
5n2/3R1kpp/pBp2p2/1p6/1Pb1PP2/P5P1/6BP/6K1 b - - 0 36 | Nxd7 | Is the move from h7 to c1 legal? | No | legality |
1rr2n2/2b1qk1p/1p1ppN1P/1N3p2/PpP2P2/5RP1/1Q6/3R3K w - - 2 35 | Nh5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4r2r/pp2bkp1/4q3/2p1P2p/Q2n1Pn1/2N5/PPP3PP/2BR1RK1 w - - 6 19 | Qxa7 | Does White have any passed pawns? | Yes: e5 | structure |
rnbqkbnr/pp3ppp/3p4/2pP4/8/8/PP2PPPP/RNBQKBNR w KQkq - 0 5 | e4 | What is the material balance in this position? | Equal | material |
2r3k1/5b2/7p/5Pp1/2BP4/p1b1P3/1N6/1KR5 w - - 2 40 | Rxc3 | Identify any Black knight outposts on the board. | h4 | outposts |
B7/2p1r1kp/1p1p2p1/6P1/2n1P2P/8/6P1/2R3K1 b - - 1 34 | Na5 | Is the move from c4 to d2 legal? | Yes | legality |
r2q1rk1/pp3ppp/2p2n2/6Bb/P2pP3/1Q6/B4PPP/R2N1RK1 b - - 0 17 | d3e4 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1q1rk1/1b2bppp/ppp1pn2/3p4/2PP4/1PNBPN2/P1QB1PPP/R4RK1 w - - 4 11 | e4 | Are there any open files in this position? | No | files |
8/p1R2k1p/1p3pp1/3r4/8/P3B1P1/4KP1P/8 b - - 3 33 | c8c7 | Is the White king in check? | No | check |
5rkr/2qn2p1/B3p2p/3b3P/3pn1R1/1P2b3/P1P1Q1P1/B2R3K w k - 7 28 | Rxd4 | What piece is on b8? | Empty | occupancy |
6k1/p1r1pp2/b5p1/3P4/1r1b1P2/1BN3P1/1P5R/2R1K3 w - - 0 27 | Ba2 | Is the move from h2 to h4 legal? | Yes | legality |
6k1/1p3p2/2p1b3/4p1p1/p1PqP1P1/1P3P1p/P3QN1P/7K b - - 2 38 | b5 | Is the move from e5 to e1 legal? | No | legality |
r1bq1rk1/pp2ppbp/2np1np1/8/4P3/2N3P1/PPP1NPBP/R1BQ1RK1 b - - 6 9 | Rb8 | What piece is on b2? | White Pawn | occupancy |
3r4/1p3k2/p1p2b2/Pr2pbpp/1PR2p2/2PP1P1P/1N1RK1PN/8 b - - 6 39 | Rbd5 | Does White have any passed pawns? | No | structure |
rnbqkb2/pp2ppp1/2p5/4B3/3P4/8/PPP2PPp/R2QKBN1 w Qq - 0 10 | Bxh2 | Is the Black king in check? | No | check |
rnbqk2r/pp2n1p1/2pb1p2/3P4/3Pp1p1/1QN4P/PP1BPPB1/R3K1NR b KQkq - 0 10 | g3 | Identify any Black knight outposts on the board. | h3 | outposts |
1q1r3k/5p1n/p1n2b2/Pp2pN1Q/1Pp3R1/2r4P/5PP1/R5K1 b - - 3 34 | h6h5 | What is the material balance in this position? | Black is up 6 pawns of material | material |
8/6r1/1pk5/p1p1p3/P1P1N1P1/3n2P1/4R1K1/8 b - - 2 59 | Rxg4 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
2r2rk1/5pq1/b3p2p/pN2P3/1b1Q1p2/5B2/PP4PP/3R1R1K w - - 2 23 | a4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
5rk1/1p1b1pp1/1qr1p3/p1bpP1pP/5P2/2PQ4/PP5R/2BRKB2 b - - 1 20 | Bg1 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r6r/p2qbpk1/1pN3n1/1P1pPp2/P3bP1p/4B2P/6P1/RN1RQ1K1 w - - 2 27 | Qf2 | What piece is on e6? | Empty | occupancy |
2r5/1b3R2/p1k1p1p1/1p1BP1P1/1B6/6n1/PP4P1/1K6 b - - 0 31 | exd5 | Does White have any isolated pawns? | Yes: e5, g2, g5 | structure |
8/8/5k1p/5pp1/2N5/1B2P1P1/5P1P/2b2K2 w - - 0 43 | g6g5 | What is the material balance in this position? | White is up 4 pawns of material | material |
1r3bk1/pr3ppp/1pq1PP2/2p5/P1Pp1B2/3Q2P1/4P2P/RR4K1 b - - 0 27 | Bd6 | What is the material balance in this position? | Equal | material |
8/2p1nr1k/4p1qp/1p1pp3/1P2P2P/2P1RPP1/Q5K1/5N2 b - - 1 50 | c6 | Is the move from e6 to g2 legal? | No | legality |
rnb1kbnr/pp3ppp/2p1p3/3pP3/8/1B3N1q/PPPP1P1P/RNBQK1R1 w Qkq - 2 7 | d4 | Is the move from b3 to d5 legal? | Yes | legality |
8/8/8/1r6/K5R1/2kb4/8/8 b - - 5 82 | Re5 | Identify any White knight outposts on the board. | None | outposts |
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