fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rn3rk1/pp3p1p/1n1PP1p1/6B1/3Q4/1BN2P2/PP5P/R2K2b1 b - - 0 22 | Bxd4 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
r2br1k1/1q1n1pp1/1pp1pnp1/p1Pp4/1P1P1P2/P1NBP2P/2Q3PB/R4RK1 w - - 2 18 | g4 | What piece is on d4? | White Pawn | occupancy |
2rr2k1/5ppp/4qn2/pp6/4PP2/1QB4P/PP4P1/1K2R2R b - - 1 23 | Qa6 | What is the material balance in this position? | White is up 1 pawn of material | material |
2b1r1k1/5pp1/pP6/1P1p4/P6p/2Nn1P2/4NQP1/1R3KBq w - - 2 36 | Ng3 | Is the White king in check? | No | check |
r1b5/3knQ2/pBn1pN1q/1p1pP1P1/3P4/P4p2/1PP2P2/2KR1B2 b - - 2 25 | h7f6 | Is the Black king in check? | Yes | check |
3r4/pp1P1k2/2pR4/2P2ppp/1P2p3/5nK1/P4P1r/3R4 w - - 0 33 | b5 | Is the White king in check? | No | check |
1r2k2r/4bp2/p2pbp2/1p2p3/4P1P1/P3B3/1PPR3P/1K3BR1 b k - 0 20 | Bc4 | Is the move from b5 to a2 legal? | No | legality |
r7/5P1k/3p3p/2p1qb1p/1p2N1rP/1P1P1Q2/2P2R2/2R2K2 b - - 2 40 | Bxe4 | What piece is on c2? | White Pawn | occupancy |
8/2Nn1rk1/1p4pb/pPp1p2p/2Q1P2q/P2R1PpP/6K1/3R4 b - - 13 40 | Qf6 | Is the Black king in check? | No | check |
r1bqkbnr/pp1p1ppp/4p3/1N2n3/2P5/2N5/PP3PPP/R1BQKB1R b KQkq - 1 8 | a6 | Are there any open files in this position? | No | files |
5rk1/5ppp/1B2p3/1p2n3/1Pp1qbnP/2Pp4/1Q4P1/4KB1R w K - 0 21 | a8e4 | Is the White king in check? | Yes | check |
1r1r2k1/5p1p/ppB3p1/8/4P3/8/P3nPPP/3R1R1K b - - 2 32 | Nc3 | What piece is on c1? | Empty | occupancy |
2r2rk1/3n1pp1/p3Nn1p/3b4/1b1N1B2/6QP/qP3PP1/2RR2K1 b - - 0 23 | g5e6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
4r1k1/3n1pbp/6p1/3P4/pr1N4/3RP1PP/5PB1/R5K1 b - - 2 31 | Reb8 | Does Black have any passed pawns? | Yes: a4 | structure |
r3k2r/1p2b1p1/1nn1bp2/pq2P3/8/5NP1/3NP2P/B1RQR1KB b kq - 0 22 | fxe5 | Identify any Black knight outposts on the board. | b4, e5 | outposts |
2r1k2r/3p1ppp/R2Bpn2/8/4P3/1P1B4/3N1PPP/6K1 w k - 1 21 | Nc4 | Is the move from d6 to e7 legal? | Yes | legality |
r3k2B/ppp1Qp2/2n3p1/5n1p/2B5/8/PPP2PPP/R3K2R b KQq - 0 14 | e4e7 | Is the Black king in check? | Yes | check |
1Bn3k1/1p3ppp/4p3/8/2K5/b3PN2/5PPP/8 w - - 4 30 | Kb5 | Does Black have any passed pawns? | Yes: b7 | structure |
rn1q1rk1/pp3ppp/2p1pn2/5b2/PbNP4/2N2P2/1P2PKPP/R1BQ1B1R b - - 2 9 | e5 | What piece is on f1? | White Bishop | occupancy |
r1b1k1nr/pp3ppp/n1pB4/4p3/2P5/8/PP1QBPqP/R3K1NR w KQkq - 0 11 | Bxe5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/1p4pp/p2R4/P2Pp1kq/1P2Pp2/2R2P2/3n1PK1/8 b - - 8 34 | Kh4 | Identify any White knight outposts on the board. | e6 | outposts |
r4r2/pp3p2/2n2k2/2np1Np1/8/4P3/PP3PPP/R2K1B1R w - - 3 21 | Ng3 | Is the move from f1 to e5 legal? | No | legality |
r1q1r3/3npp1k/bp1pBbpB/p2P4/P1PN4/2R5/1PQ3PP/5R1K w - - 4 26 | Rh3 | Identify any Black knight outposts on the board. | None | outposts |
r2qk2r/4bppp/2npb1n1/2p1p3/4P3/1PpPBN2/P2QBPPP/1K1R3R w kq - 0 14 | b4c3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
6r1/kbpn1p1r/1n1ppq2/p6P/Pp1PP3/1P2QBN1/2P1N3/1K1R2R1 w - - 2 27 | c3 | Is the move from c2 to c3 legal? | Yes | legality |
8/7p/8/p7/5p2/p3qPkP/3b4/3K4 w - - 0 54 | a4a3 | What is the material balance in this position? | Black is up 14 pawns of material | material |
2r5/8/8/4k2p/5p2/R1P2K1P/6P1/8 b - - 1 39 | Rc5 | Does White have any passed pawns? | Yes: c3 | structure |
2Q1r3/pp2P1kp/6p1/5p2/8/7P/P4PP1/4R1K1 b - - 0 31 | e6c8 | What is the material balance in this position? | White is up 9 pawns of material | material |
2rrb1k1/ppq2ppp/3bpn2/4N3/3P4/1BP2QB1/P4PPP/2R1R1K1 w - - 3 20 | c4 | Is the White king in check? | No | check |
rnb1kb1Q/pppp3p/6p1/8/4q3/8/PPPP1PPP/R1B1KB1R w KQq - 0 9 | e7e4 | Is the White king in check? | Yes | check |
7r/p7/1pk2Np1/n1p2b2/5B2/2P1R2P/P7/4K3 b - - 4 30 | Rh4 | What piece is on e8? | Empty | occupancy |
3b4/8/4p3/3p1p2/pP1P4/P1pKP3/2N2k2/8 b - - 9 65 | Bg5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qk2r/pp1nn1pp/2pbbp2/3pp3/3PP1P1/2N2N1P/PPP2PB1/R1BQ1RK1 b kq - 0 9 | O-O | Is the b-file open, semi-open, or closed? | closed | files |
8/8/4k1R1/6P1/1p1P3P/6K1/3r4/8 b - - 0 44 | Kf7 | What piece is on e1? | Empty | occupancy |
4Qbk1/1bq2p1p/ppNp2p1/3P2P1/P1P5/1n6/6BP/6BK w - - 2 35 | Nd8 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/2R5/1p1N4/p7/2P3p1/3k2Pp/6r1/7K b - - 0 46 | Rxg3 | Are there any open files in this position? | Yes: d, e, f | files |
5b2/2pk1N2/3p3p/KP1Pp1pP/4P1P1/8/5P2/8 b - - 0 10 | Ke7 | Does Black have any passed pawns? | No | structure |
1n1r4/8/3k1B2/1B1R2N1/pb5p/8/PP3PPP/1K1R4 b - - 0 32 | f5d5 | What is the material balance in this position? | White is up 11 pawns of material | material |
r7/1p3p2/2k1bP2/1p1p3R/3P3K/PRP5/8/8 b - - 4 62 | Rg8 | Identify any White knight outposts on the board. | b4, d4 | outposts |
4r3/p2p1p1k/3Bpnbp/2P5/2Q1P3/3B1PR1/1q4P1/3K4 w - - 2 32 | e5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/1b1n1ppp/3n4/p1pp4/8/1P2PNP1/PQ2NPBP/R4RK1 w - - 0 17 | Rfd1 | What is the material balance in this position? | Equal | material |
4r3/p6p/1p2p3/3k1p2/3P4/8/PP3KPP/3R4 w - - 0 30 | Rc1 | Identify any White knight outposts on the board. | None | outposts |
6k1/pb3ppp/3b1n2/B3p3/2rpP3/P4N1P/5PP1/R4RK1 w - - 0 22 | c8c4 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/3NR3/r4pkp/p7/1p3PP1/7P/8/6K1 b - - 0 36 | g2g4 | Identify any Black knight outposts on the board. | a3, b4, c3 | outposts |
rnq3k1/pp3ppp/2p2b2/3p4/3P4/3Q1NB1/PPP2PPP/4R1K1 w - - 2 18 | Bd6 | Is the move from b2 to b4 legal? | Yes | legality |
2k2r1r/pp1bnpp1/2n1p2p/q2pP2P/P1pP2P1/2P5/2PBNP2/R1Q1KB1R w KQ - 1 14 | Bg2 | Are there any open files in this position? | No | files |
4rr2/pp4pk/3Qn1qp/1P1BB3/2P4R/6P1/P6P/Rb4K1 b - - 4 28 | Qf5 | Is the White king in check? | No | check |
rq4k1/p3n2p/bN1p2pb/P2Pp3/1Q2P3/R4Pp1/1P3BBP/R5K1 b - - 0 29 | gxf2+ | What piece is on f4? | Empty | occupancy |
2r2r2/pp1bqpk1/1n3npp/4p3/4P3/P4NNP/BP1Q1PP1/2R2RK1 b - - 1 21 | Be6 | What piece is on c7? | Empty | occupancy |
1k1r1b1r/pp3b1p/5p2/1P4p1/8/3NP1P1/4P1BP/R1R3K1 b - - 0 26 | Bd6 | Identify any Black knight outposts on the board. | e5 | outposts |
r2qkb1r/2p2ppp/p1n1b3/1p1pP3/4n3/1BP2N2/PP3PPP/RNBQ1RK1 b kq - 0 9 | Bc5 | Is the move from d8 to d7 legal? | Yes | legality |
r1b3nr/pp2k2p/5q1b/2B1n2Q/3PPp1p/1P6/P1P3P1/RN1R2K1 b - - 0 15 | Ke6 | Identify any White knight outposts on the board. | d5, e5, f5 | outposts |
r1b1k2r/pp4pp/2nbpn2/1B1p4/3P4/1R3N2/3B1PPP/q1NQ1RK1 w kq - 2 17 | Bc3 | Is the c-file open, semi-open, or closed? | open | files |
r4r1k/p5p1/1p1R3p/5B2/2n3P1/8/P4P1P/5RK1 w - - 1 29 | Rd5 | What piece is on a2? | White Pawn | occupancy |
4r1k1/2pr1p1p/bppb4/p5p1/P3Pp2/2N2R2/1P3NPP/R5BK b - - 1 22 | h5 | What piece is on f3? | White Rook | occupancy |
r3k2r/p3bppp/bq2p3/2ppP3/5PP1/1NP4P/PP1Q3R/R1B1K3 w Qkq - 2 16 | h4 | Does White have any passed pawns? | No | structure |
r2q1r1k/1b3ppp/p7/P7/1nB2n2/5N2/1Q3PPP/RN2R1K1 w - - 1 21 | Qxb4 | What is the material balance in this position? | Equal | material |
r1b2rk1/pp3ppp/2n5/8/2B1p3/1N4PP/P5K1/R1B4R b - - 0 19 | Ne5 | Is the move from a8 to a5 legal? | No | legality |
3k4/pp6/5r2/5b2/2B5/P7/2p3PP/2R1K3 w - - 0 32 | Bb3 | Does White have any passed pawns? | Yes: g2, h2 | structure |
r1b1kbnr/1pqp1ppp/p1n1p3/8/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq - 0 7 | Bd3 | Are there any open files in this position? | No | files |
r4r1k/1p5p/2p1b1p1/p2pPpn1/5PPq/3BP1NP/PPQ3K1/4RR2 w - - 3 25 | fxg5 | What piece is on c4? | Empty | occupancy |
7r/5pp1/8/1pbkP3/3p1P2/p1p2K1P/2P5/R6R w - - 0 50 | Rae1 | What piece is on h8? | Black Rook | occupancy |
8/8/8/8/1p6/1Kb2k2/5p2/5B2 b - - 23 109 | c2b3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r4rk1/pp1b1ppp/2pq4/4R3/2BP4/8/PP1Q1PPP/R5K1 w - - 4 21 | Rae1 | Are there any open files in this position? | Yes: e | files |
6k1/6pp/4p3/2R1Pp2/2P1p3/2n1P1P1/3r1P1P/5BK1 b - - 0 30 | Nd1 | Is the move from d2 to e2 legal? | Yes | legality |
6k1/1pr3qp/p2p1pP1/3Pp3/PP6/2P1P3/2Q4P/6RK b - - 0 33 | h6 | Does Black have any isolated pawns? | Yes: h7 | structure |
r1bqkb1r/pp1n1ppp/2n1p3/2p1P3/5B2/3P1N2/PP2QPPP/RN2K2R w KQkq - 1 9 | f6d7 | Identify any Black knight outposts on the board. | d4 | outposts |
r4rk1/pp2bpp1/2p2n1p/4p3/2QqP3/1B5P/PPP2PP1/RN3RK1 w - - 4 14 | Qe2 | Is the move from a2 to h4 legal? | No | legality |
r4k2/1N2bppp/2p1pn2/2P5/r7/p4PP1/P2BP2P/1R1R2K1 w - - 1 22 | Nd6 | What is the material balance in this position? | Equal | material |
8/8/8/2p1k1b1/p1P1N1Pp/3K3P/P7/8 b - - 2 136 | Be7 | Identify any Black knight outposts on the board. | None | outposts |
kn2n3/p1K2B2/P4P2/8/2p2p1p/2P2P1p/7P/2r5 w - - 1 2 | Bxe8 | What piece is on b8? | Black Knight | occupancy |
r3k2r/1b5p/p4qpN/1p2b3/5pP1/P7/1PP2QBP/4R1K1 w kq - 0 24 | Bxb7 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
1k1r1b1r/6pp/1p3p2/1P2nb2/8/4B1P1/1P2PPBP/R5K1 w - - 2 22 | Bxb6 | Does Black have any isolated pawns? | Yes: b6 | structure |
3r1k2/5p1p/2q2QpP/1pP1Pp2/p7/P1P3P1/5P2/6K1 w - - 0 47 | Qxc6 | Is the Black king in check? | No | check |
2r1r1k1/pb2qppp/8/2pp3n/Q7/1P1BP3/PN3PPP/2RR2K1 b - - 5 20 | d4 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r1bQkbnr/pp2pppp/2n5/2p5/4P3/2P5/PP3PPP/RNB1KBNR b KQkq - 0 5 | d1d8 | Is the Black king in check? | Yes | check |
1r5k/5p1p/2pn2q1/p3b3/4P3/P3Q2P/B4R2/3R3K w - - 19 35 | Rg1 | Identify any Black knight outposts on the board. | None | outposts |
rn1q1rk1/pppbb1pp/4pp2/3pP3/3P3P/2NB1N2/PPP2PP1/R2QK2R w KQ - 0 10 | Ng5 | What piece is on d4? | White Pawn | occupancy |
r1bqkb1r/pp2pppp/2np4/2p5/Q3n3/2P2N2/PP1PBPPP/RNB1K2R w KQkq - 2 6 | Qxe4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr1b1r/ppqn1p1p/2p2p2/7b/2PPp3/1Q2B2P/PP2BPP1/2KR2NR b - - 1 16 | Bg6 | Does White have any isolated pawns? | No | structure |
2r1r1k1/3n1p2/R5p1/3Pq2p/1P1p4/5B2/1n1Q1PPP/1R2B1K1 b - - 2 30 | Rc2 | Is the move from d7 to b8 legal? | Yes | legality |
r1bqk1nr/ppp2ppp/2np4/2b5/2BpP3/1N3N2/PPP2PPP/R1BQK2R b KQkq - 1 6 | d2b3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b2rk1/p4pbp/2p1pnp1/q2p4/4P3/1BN1BP2/PPPQ2PP/2KR3R w - - 2 13 | Kb1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
rnb1k2r/ppp2ppp/4pn2/3q4/1b1P4/2N2N2/PPQ1PPPP/R1B1KB1R b KQkq - 1 6 | Qf5 | Does Black have any isolated pawns? | No | structure |
5rk1/p1R3pp/4p3/1p6/1n3P2/1P4P1/P2N1b1P/6K1 w - - 0 24 | d4f2 | Is the White king in check? | Yes | check |
8/8/8/8/8/2K1N3/p1P1N3/1k6 w - - 4 9 | Kd2 | Is the move from c3 to c5 legal? | No | legality |
rnb2rk1/pp2qpbp/2p3pn/4P3/2BBN3/5N1P/P1PQ2P1/1R3RK1 b - - 2 16 | b6 | What piece is on a4? | Empty | occupancy |
3Q4/1p1R3p/6pk/8/7P/P3qP2/bPP3P1/2K4R w - - 0 32 | e4e3 | Is the Black king in check? | No | check |
rnbqk2r/ppp1nppp/3b4/3p2B1/3P4/3B1N2/PPP2PPP/RN1QK2R b KQkq - 5 6 | Nbc6 | Is the move from h7 to e8 legal? | No | legality |
2br4/pp3kp1/1q4n1/2b1p2Q/4B3/1P6/PBP2PPP/R5K1 w - - 2 23 | Kh1 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
4r1k1/pn3qp1/1p1rb2p/4R3/1pB5/P1Q1PPP1/1B3KP1/3R4 w - - 0 29 | axb4 | What is the material balance in this position? | Equal | material |
2rqbrk1/1p3ppp/p2bpnn1/3pN1N1/3P4/PP1B2P1/1BP2P1P/R2QR1K1 b - - 2 15 | h6 | Is the move from f7 to f8 legal? | No | legality |
r1bq1rk1/1p1nppb1/p1pp1npp/6B1/2PP3P/2NBPN2/PPQ2PP1/2KR3R b - - 1 10 | h5 | What piece is on e1? | Empty | occupancy |
2r2n2/1RP3k1/7p/p3p1p1/P5p1/1B3P1P/8/6K1 w - - 0 37 | hxg4 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
1r4nk/1p1qb2p/3p1r2/p1pPp3/2P1Pp2/2N2P1P/PP1Q1BRK/5R2 w - - 2 30 | Ne2 | Are there any open files in this position? | Yes: g | files |
8/7p/4kpp1/8/1b1PKP2/4P3/6PP/8 b - - 0 51 | f5+ | Does Black have any passed pawns? | No | structure |
2k5/1p1Q1R2/p7/3NP3/Pp5p/3P3P/1PP3K1/5R2 b - - 0 33 | e6d7 | Is the Black king in check? | Yes | check |
r1b2rk1/2q2pbp/p2pppP1/7B/4P1Q1/1Np3R1/PPP3PP/R5K1 b - - 0 17 | fxg6 | Identify any Black knight outposts on the board. | e5 | outposts |
2r1kb1r/4npp1/1qb1p2p/Rp1pP3/1PnP3P/2NB1N2/5PP1/1RBQ2K1 w k - 6 21 | Qe2 | What piece is on a3? | Empty | occupancy |
rnbqkb1r/ppp1pppp/5n2/3p2B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 2 3 | Bxf6 | Is the move from d4 to d5 legal? | No | legality |
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