fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3R4/5pk1/1p4q1/p7/2pP3p/P6P/1P3PP1/4R1K1 w - - 0 46 | Rc8 | What piece is on d3? | Empty | occupancy |
3r4/1p2kp1p/pbn1pp2/2N5/2R3P1/1P2PN2/P3KP1P/8 b - - 4 21 | Bxc5 | Is the d-file open, semi-open, or closed? | open | files |
7k/p4qb1/1p4Pp/5N2/2P1p3/4P2K/6P1/8 w - - 0 39 | f6f7 | What is the material balance in this position? | Black is up 9 pawns of material | material |
rn1qrbk1/5Rp1/2p4p/p3p3/Q7/P2PBNP1/1P2PPBP/6K1 w - - 0 19 | Rb7 | Identify any Black knight outposts on the board. | None | outposts |
r2q1bnr/2p1pk1p/n2pQpp1/1N1P4/P3P3/4B2P/2P2PP1/1R3RK1 b - - 3 25 | g4e6 | Is the Black king in check? | Yes | check |
8/8/8/p7/8/k1K5/2p5/2N5 b - - 3 82 | Ka4 | Are there any open files in this position? | Yes: b, d, e, f, g, h | files |
r1bq2k1/1ppp1pbp/p5p1/3P4/8/2P2N2/PP3PPP/RNBQr1K1 w - - 0 13 | e8e1 | Is the White king in check? | Yes | check |
2r3k1/6pp/1q2p3/p1bpNb2/1p3P2/6R1/PPPQ4/1K1R4 w - - 2 31 | Ng4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/1b1n1ppp/p1q1p3/1p1NP3/8/b3BN2/1PP1QPPP/3R1RK1 b - - 0 15 | Qc8 | Is the move from a3 to d3 legal? | No | legality |
8/p3kp2/1p2b2r/r7/P1PRR1P1/2P3Kp/7P/3B4 b - - 3 28 | Kf8 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
2r1kb2/3b2rQ/p2p4/3Pp1p1/1pN2p2/1P6/P1P3q1/1K1R2BR w - - 2 24 | Qh5+ | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3kb1r/1p1q1pp1/p3p1b1/3pB1Pp/3P3P/1QP1P3/P3BP2/R3K2R b KQkq - 0 15 | Rh7 | Is the Black king in check? | No | check |
rn4k1/pb5p/1n4p1/1ppq2N1/8/2P5/P3B1PP/R1B2QK1 w - - 1 18 | Bg4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2b5/2k2r2/p2P2Q1/3P4/2P2q2/7p/P4P2/1R4K1 b - - 0 42 | Kd8 | Identify any Black knight outposts on the board. | None | outposts |
r1b1r1kb/1p2pp2/2np2pB/q1n5/p1P1P3/2N1Q3/PPN1BPP1/R4RK1 w - - 0 17 | Rab1 | Identify any White knight outposts on the board. | b5 | outposts |
r3rnk1/pp3ppp/2pqbn2/3p4/3P4/P1NBPN1P/1PQ2PP1/R4RK1 b - - 0 14 | Qe7 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
5rk1/P4p2/8/8/P1bP4/B3P3/5PK1/8 w - - 0 35 | a8f8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2q1rk1/pp3p2/3p1bp1/4p3/3nB3/2N5/PPP2PPP/R2Q1RK1 b - - 1 14 | Bg7 | Identify any Black knight outposts on the board. | None | outposts |
5k2/5pp1/1p5r/p1b1Pp2/3p1P2/2pR2P1/2P4P/R6K b - - 0 40 | Ke7 | What piece is on a3? | Empty | occupancy |
r1bqkbr1/ppp1n2p/2npQ1p1/5pN1/3p4/8/PPP2PPP/RNB1R1K1 w - - 10 17 | Qxg8 | What piece is on g7? | Empty | occupancy |
1n1q1rk1/r1p1bppp/p3p3/1p6/2bP2n1/3Q1NP1/PP1BPPBP/RNR3K1 w - - 12 15 | Rxc4 | What piece is on h6? | Empty | occupancy |
rq3rk1/p2n1p1p/1p1bp1p1/1B4B1/3P3R/5Q2/PP3PPP/2R3K1 b - - 0 17 | Qe8 | Is the move from a8 to d5 legal? | No | legality |
3Rk2r/pp2bppp/2p2n2/5b2/B3PB2/5P2/PP4PP/5KNR b k - 0 16 | d1d8 | Is the White king in check? | No | check |
3r1rk1/p1q3b1/2p2pp1/2p1p2p/2N5/3P1Q1P/PPP1RPP1/4R1K1 b - - 1 19 | Kh7 | Are there any open files in this position? | No | files |
rq4k1/4bp1p/2b2np1/p1N5/1p1B4/6P1/PP2BP1P/3RQ1K1 w - - 0 25 | Bc4 | What piece is on g8? | Black King | occupancy |
r1bqr1k1/pppn1ppp/5n2/3PN3/1b1P4/3B4/PP1N1PPP/R1BQ1RK1 w - - 3 12 | Ndf3 | Is the e-file open, semi-open, or closed? | open | files |
3rk1r1/1p2n2p/p7/5p2/P2Bp3/6P1/4KP1P/2RR4 b - - 2 26 | Rg6 | Identify any White knight outposts on the board. | h4 | outposts |
rnb1k2r/ppp2pb1/8/3P2p1/8/2N5/PPP1qPPP/R1B1K2R w KQkq - 0 14 | c4e2 | What is the material balance in this position? | Black is up 10 pawns of material | material |
4qrk1/2R3p1/4p2p/2P1Pp2/3P3P/3B1Q2/1r3BPK/8 w - - 1 37 | g6e8 | What is the material balance in this position? | White is up 2 pawns of material | material |
r3qrk1/pp3pb1/2pn1R1p/4P2Q/3p4/2NB3P/PPP3P1/R5K1 w - - 0 21 | Ne2 | What piece is on b3? | Empty | occupancy |
rn3rk1/1p3ppb/1n2p3/p5q1/Pb3R2/2N1B3/1P2Q1BP/R5K1 w - - 0 22 | Rxb4 | What piece is on h4? | Empty | occupancy |
2r1r1k1/5p2/Q2p2p1/3P2Pp/1p2P2q/8/1PP1R3/6RK w - - 0 32 | g3h4 | Is the White king in check? | Yes | check |
r2q1rk1/p3b1pp/bpp1pn2/3p1p2/2PP4/1PB3P1/P2NPPBP/2RQ1RK1 w - - 2 14 | Bb2 | Is the a-file open, semi-open, or closed? | closed | files |
Q3kbnr/p1pb1ppp/8/1r2p3/3P4/6P1/PP3P1P/1RB2RK1 b k - 1 16 | f3a8 | Is the Black king in check? | Yes | check |
8/8/p7/1p1KP3/1r4k1/8/8/7R w - - 0 88 | e6 | What piece is on d4? | Empty | occupancy |
r1rq1bk1/3b1pp1/p4n1p/1p1Pp3/PPp1P3/R1P1B1NP/2B3P1/R4QK1 b - - 1 28 | Ne8 | Does White have any isolated pawns? | No | structure |
r1b1kb1r/ppp1n3/2nq3p/3BP3/3P1ppP/2NQ4/PPP3P1/R1B1K2R b KQ - 0 12 | Qg6 | Are there any open files in this position? | No | files |
4kb1r/1prb1p2/pNnppp2/7p/q4P2/1NPB4/P2Q2PP/R4R1K b k - 5 19 | Qa3 | Are there any open files in this position? | No | files |
8/1R6/8/N4k1K/1p5p/1P6/8/7r b - - 3 72 | Ra1 | What is the material balance in this position? | White is up 2 pawns of material | material |
r5k1/1p2p1bp/p2pp1p1/q1r5/2P1P1B1/1P6/P5PP/2RQ1R1K w - - 0 20 | Bxe6+ | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b2r2/ppq1kNpp/4pn2/1B3nN1/3P4/8/PP2QPPb/R1B2R1K w - - 2 16 | Bd3 | Identify any White knight outposts on the board. | e5 | outposts |
1r3rk1/1p1n1ppp/2p1pn2/B1b5/8/3P1BP1/P2NPP1P/1R2K2R w K - 1 18 | Bc7 | Is the move from h2 to c1 legal? | No | legality |
r4rk1/pp3p1p/1n3PpQ/3Pq3/8/1BN2P2/PP5P/R3K1b1 w Q - 1 21 | Ne4 | Is the move from b3 to b4 legal? | No | legality |
r1n5/1K1R2pk/8/4p3/4P3/5PbP/8/8 b - - 3 63 | b6b7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
8/p2r4/1p2k3/1N3p2/2nP1Kp1/P1R3P1/7r/8 w - - 0 49 | Rxc4 | Is the e-file open, semi-open, or closed? | open | files |
rnb2r2/p4p1k/6p1/1p1p3n/P5q1/1P5Q/5P1P/3R1RK1 w - - 0 23 | d4g4 | Is the White king in check? | Yes | check |
N4r2/pp1k2p1/3pb3/Q1p3qp/2PnPp2/1P5P/P5B1/R4R1K b - - 5 22 | Rxa8 | Is the move from g5 to d5 legal? | Yes | legality |
8/2p1kBq1/p3N3/np5Q/6P1/2P5/PP1r1P1P/R5K1 w - - 3 31 | f8e7 | Identify any White knight outposts on the board. | f5, h5 | outposts |
r1b1kb1r/ppp1qppp/5n2/3P2N1/1n2p3/2N1P3/PP1P1PPP/RQB1KB1R b KQkq - 0 8 | Bf5 | Does Black have any passed pawns? | No | structure |
8/5p1k/4p3/3bq3/Pp6/3Q1P2/5KPP/8 b - - 1 42 | a6d3 | Is the Black king in check? | Yes | check |
8/8/3k2p1/p3b1Pp/4P2P/3N4/P1p1K3/8 b - - 0 1 | Bb2 | Is the move from d6 to e7 legal? | Yes | legality |
r2q1rk1/pp3ppp/2pp4/3N1b2/3P4/8/PPP2PPP/2RQR1K1 w - - 0 16 | Ne7+ | Does Black have any passed pawns? | No | structure |
2rq1rk1/pb2bppp/1pn5/1B1p4/Q2P1B2/5N2/PP3PPP/R3R1K1 b - - 5 14 | a6 | Identify any Black knight outposts on the board. | None | outposts |
rnbq1rk1/pppp1p1p/7Q/8/2BpP3/2P5/P1P2PPP/R3K1NR b KQ - 0 8 | c6 | Identify any White knight outposts on the board. | f5 | outposts |
8/5p2/4p1k1/3pPpPp/1p1PrP2/6K1/1P2RQ1P/7q b - - 5 43 | h4+ | Does White have any isolated pawns? | Yes: b2 | structure |
8/8/p7/1p6/5K2/1Pk3p1/8/8 b - - 1 49 | g5f4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r4k2/6p1/pR6/3Qp3/8/b1P3P1/5PK1/2q5 b - - 7 31 | g1g2 | What is the material balance in this position? | Black is up 3 pawns of material | material |
1r5r/p2k1p2/1np1P1p1/q2p1pPp/3P3P/b1P1QB2/P3N3/1R3R1K b - - 0 26 | fxe6 | Is the move from d7 to f6 legal? | No | legality |
5rk1/p6p/1r1p2qQ/3Rp3/1p5R/1P3P2/1PP3P1/2K5 b - - 1 23 | Qxh6+ | What is the material balance in this position? | Equal | material |
r3k3/pppb1ppq/1b1p1n2/4p3/P3P3/3P2Q1/1PP1NPBP/R4RK1 b q - 0 15 | a5 | What is the material balance in this position? | White is up 2 pawns of material | material |
5rk1/5ppp/r7/1p1pN3/p2P1P2/2P4b/PP3P1P/R3R1K1 b - - 2 24 | a3 | What piece is on e5? | White Knight | occupancy |
7k/p5rp/8/3R1p2/2q4Q/4P3/1P3PPP/6K1 w - - 0 36 | Qxc4 | Does White have any isolated pawns? | Yes: b2 | structure |
5r2/4q2k/B1pp2p1/4b2p/p3P1nP/P6r/R5K1/3R4 b - - 3 35 | h1g2 | What is the material balance in this position? | Black is up 14 pawns of material | material |
r3k2r/1pp1bppp/p1b5/8/4P3/5P2/PPPB2PP/R3K1NR b KQkq - 0 12 | f2f3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/1p4p1/p1nNbn1p/3p2q1/2P1p3/4N3/PP2BPPK/R2Q1R2 b - - 0 23 | c3c4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qkb1r/pp2nppp/2n1p3/3pPb2/3P4/P4N2/1P2BPPP/RNBQ1RK1 b kq - 0 9 | Nc8 | What is the material balance in this position? | Equal | material |
8/5p2/p2k4/Pp6/1Kp1PpPp/2P4P/8/5B2 b - - 0 53 | f3 | What piece is on c5? | Empty | occupancy |
8/4p3/8/3P1bp1/3k4/6P1/B7/2K5 b - - 4 61 | Ke3 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/pp2bppp/1n2pn2/6B1/2BP4/2N2N2/PP2QPPP/R4RK1 w - - 5 11 | Bb3 | Is the Black king in check? | No | check |
rn1qk1nr/pbppp1b1/1p4pp/5P2/5PPP/3P4/PPP5/RNBQKBNR b KQkq - 0 7 | e4f5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnb1k2r/pp3pQp/4p3/qPbp4/4n3/P1N5/1BP1PPPP/R3KBNR b KQkq - 0 9 | Bxf2+ | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
4r1k1/1q1n1ppp/p1p5/Bp6/1Pb1P3/P4PP1/5QBP/3R2K1 w - - 2 29 | Rd6 | Is the move from g3 to h6 legal? | No | legality |
1k6/1pr2pp1/p7/4P2Q/1b1r4/1P4P1/P6P/5RK1 w - - 0 25 | d8d4 | What is the material balance in this position? | White is up 2 pawns of material | material |
6k1/n3Q2p/4N3/1p6/5P2/3Pp3/P2q2KP/8 w - - 4 43 | Kh3 | Is the move from g2 to f1 legal? | Yes | legality |
6Q1/4q3/2p5/4p3/1q1pP1P1/k1nP4/2Q5/5BK1 w - - 4 45 | g5 | Is the move from g1 to c3 legal? | No | legality |
rqb2rk1/3nbppp/p2pp3/6P1/1p1BPP2/2NB1Q2/PPP4P/2KR3R w - - 0 16 | Nd5 | Identify any Black knight outposts on the board. | None | outposts |
1k1r2nr/pp1b3p/1q3p2/4p3/2Bn2p1/PPN5/1B3PPP/2RQR1K1 b - - 0 19 | Ne7 | Identify any Black knight outposts on the board. | d4 | outposts |
r2r2k1/p2q1p1p/6p1/2pP4/3b1P2/8/PP4PP/1RBQR2K b - - 1 19 | Qf5 | What piece is on d8? | Black Rook | occupancy |
r1b5/p4k2/1pp5/6Q1/3P2pR/2P3Pn/P5K1/R7 w - - 2 37 | g6f7 | What is the material balance in this position? | White is up 8 pawns of material | material |
8/1p6/3k1bb1/R7/2B3P1/1Pn1p1p1/6N1/5K2 b - - 0 45 | Bd4 | What piece is on a6? | Empty | occupancy |
4rrk1/pp4p1/2pp3p/8/3p2P1/1P1P4/PKP2q2/2R4Q b - - 6 31 | g1c1 | What is the material balance in this position? | Black is up 7 pawns of material | material |
r1bqkb1r/pp2pppp/2n2n2/2pp4/8/5NP1/PPPPPPBP/RNBQ1RK1 w kq - 2 5 | d4 | What is the material balance in this position? | Equal | material |
r1bq1rk1/5ppp/p2b1n2/pP1p4/8/P1N1P3/1BQ1NPPP/R3K2R w KQ - 0 15 | O-O | What piece is on a7? | Empty | occupancy |
1kr1b1Q1/pp4p1/1q2pp1p/1P2N3/PB6/2P5/5PPP/n4RK1 w - - 0 24 | Qxe8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
6r1/1b1qkp1p/3Npp2/1Q6/3p2r1/6P1/PP3P1P/R1BR2K1 b - - 0 22 | Kxd6 | What piece is on d4? | Black Pawn | occupancy |
1r3k2/1pR3pp/1pp2p2/3p4/5P2/8/PPP3PP/6K1 b - - 2 24 | Re8 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/2p2p1p/2n3p1/p1p1p3/2P1P3/2P1rNPP/P4P2/R5K1 w - - 0 24 | fxe3 | Is the move from a1 to b1 legal? | Yes | legality |
8/6k1/5pP1/4p1pP/P3P3/1P5R/2rq4/1K4Q1 w - - 2 51 | Qa7+ | Are there any open files in this position? | Yes: c, d | files |
rnbqk1nr/pp2ppbp/2p3p1/8/2Q5/5NP1/PP1PPP1P/RNB1KB1R w KQkq - 1 6 | Bg2 | What piece is on d1? | Empty | occupancy |
r3r1k1/3nqpb1/pnb3pp/4p3/PPp1P3/5NNP/B1QB1PP1/3RR1K1 w - - 2 27 | a5 | What piece is on e1? | White Rook | occupancy |
5rk1/4qp1p/p2p1np1/5p2/2N1b3/2PnQ2N/R5PP/5RK1 b - - 0 26 | a1a2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5k2/R7/7r/2p5/8/2PK4/1P6/8 w - - 0 45 | Kc4 | Is the Black king in check? | No | check |
rnb5/pp1p1k1p/2p3p1/2q2pP1/5P2/1P3P2/PBQ2K2/RN4NR w - - 4 20 | e7c5 | Is the White king in check? | Yes | check |
r5r1/1b3p1k/ppq1p3/2pp4/5PQb/1P2P2R/P1PP2PP/R5K1 w - - 6 21 | Rxh4# | Identify any Black knight outposts on the board. | None | outposts |
r1bqk2r/pp3ppp/2nPp1n1/2p3N1/2Pb3P/1PN3P1/PB1P1P2/R2QKB1R w KQkq - 5 12 | Qh5 | What piece is on g1? | Empty | occupancy |
r1bn1r1k/pp2q1pp/4p3/2p1Pp2/2B1PP2/PP6/1BQ3PP/R4RK1 w - - 1 19 | Rad1 | What is the material balance in this position? | Equal | material |
r4rk1/p4ppp/1np1p3/2q5/1Qb1P3/2P3P1/P2B1PBP/R2R2K1 b - - 4 17 | Qh5 | Does Black have any isolated pawns? | Yes: a7, c6 | structure |
rn1qkb1r/1b3pp1/p2ppn1p/8/1p1NP3/2N1BP2/PPPQ2PP/2KR1B1R w kq - 0 11 | Nce2 | Is the move from d4 to f5 legal? | Yes | legality |
1Q1k3r/p5pp/4p3/2p2p1B/3n1B2/3P2R1/PPq2P1N/R6K b - - 2 28 | b7b8 | Is the Black king in check? | Yes | check |
8/6pp/8/pppkn3/3p4/P4P1P/1PPNK1P1/8 b - - 0 28 | Nc4 | Is the White king in check? | No | check |
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