fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3k3r/3b1ppp/2p5/2QpP3/8/1qP5/5PPP/1N3RK1 w - - 3 19 | Nd2 | Is the move from h2 to c5 legal? | No | legality |
1kr1r3/5p2/Q2p1p2/4b3/1P1q4/P2B4/6PP/2R1R2K b - - 8 39 | Rh8 | Does White have any isolated pawns? | No | structure |
5k2/5n2/p2r2pP/8/pPQ4P/2K5/8/8 b - - 0 48 | Nxh6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2rb1k1/5pb1/2p1p1N1/q1P5/p1BP2QP/P7/5P2/3RR1K1 b - - 0 35 | Rxd4 | Identify any White knight outposts on the board. | c5 | outposts |
2r2n1k/pp1bqr2/4pp1Q/3pP3/8/6R1/PPB2PPP/2R3K1 b - - 0 25 | Nh7 | Is the move from f7 to h7 legal? | Yes | legality |
r1b1nrk1/p1q2p1p/2pbp1p1/2ppN3/5P2/1P2P2R/PBPP2PP/RN1Q2K1 w - - 0 12 | Qh5 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
rnbq1rk1/pp3ppp/2pbp3/6P1/2B1n2P/1P2PN2/PB1P1P2/RN1QK2R b KQ - 0 9 | b6 | Is the White king in check? | No | check |
4r1bk/1q3n2/p1N3pp/1rpPp3/4P3/P1Q3P1/6BP/2R2RK1 w - - 9 34 | a4 | Identify any White knight outposts on the board. | c6, e6 | outposts |
3rr1k1/2pnqppp/1p1p4/p7/2P1n3/1P4P1/PB2PPBP/2RQ1RK1 w - - 2 19 | f3 | What piece is on d1? | White Queen | occupancy |
r1bqk1nr/pp2ppbp/3p2p1/1N6/2BpP3/5Q2/PPPP1PPP/R1B1K2R b KQkq - 3 8 | Nh6 | Does Black have any passed pawns? | No | structure |
r1b1kbnr/2qp1pp1/p3p1n1/1p6/3NP2p/2NBB2Q/PPP2PPP/2KR1R2 b kq - 1 12 | b4 | Does White have any isolated pawns? | No | structure |
1r4k1/5pPp/p3pP2/3pP3/n1B3P1/8/2PK4/7R w - - 0 31 | Bd3 | What piece is on a2? | Empty | occupancy |
2r1kq1r/1p1b1p2/1nn1p3/3pP1Np/p2P2p1/P2Q4/1P3PPP/RBB1R1K1 w - - 0 23 | Nh7 | Is the White king in check? | No | check |
8/8/8/5Kpk/8/6pP/6P1/8 b - - 3 75 | Kh4 | What piece is on h5? | Black King | occupancy |
r3k2r/2q2pp1/p3p2p/1p1pP3/bP1P2QP/3B4/2PB1PP1/4R1K1 b kq - 0 25 | g6 | Are there any open files in this position? | No | files |
5rk1/ppRq1pp1/7p/4Q3/8/P3P3/1P3P2/4K3 b - - 1 25 | Qd3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqk2r/pppp1ppp/8/3QP3/4n3/5N2/PPP2bPP/RNB1KB1R w KQkq - 0 6 | Ke2 | Is the White king in check? | Yes | check |
6k1/p3pp2/1p1p1npp/3n4/2NP4/4PN1P/PP3PP1/5K2 w - - 3 26 | Ke2 | What is the material balance in this position? | Equal | material |
2rq3r/1b1nbk2/p3p1p1/1p1pPp1p/1P1N1P2/PN1PB3/4Q1PP/2R2RK1 w - - 4 23 | Na5 | Is the Black king in check? | No | check |
r1b3r1/3k1q2/1Q2pB2/p2pP1pN/2p5/b1P5/PR3PPP/1R4K1 w - - 10 34 | Ng3 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
8/4k3/2n1B3/6BP/7p/8/8/4K2R b K - 2 31 | Kxe6 | Is the move from e7 to c7 legal? | No | legality |
r3k3/pp5p/2pp2pn/4p3/3r4/8/3K4/8 w q - 6 41 | f4d4 | Is the Black king in check? | No | check |
r2qr1k1/1b1nbpp1/p4n1p/2p1P3/Np1P3B/3B4/PPQ1N1PP/2R2RK1 b - - 0 17 | Nd5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
1r3b1k/4np1p/bN1p1q2/4pPr1/1p2P3/1N2Q3/PPP5/1K1R3R w - - 0 23 | Nd7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
6r1/1p2p2k/5pbb/pP1PqNp1/Pr2P3/2p2PNP/2Q3K1/3R1R2 w - - 4 35 | Rb1 | Are there any open files in this position? | No | files |
3r2k1/p4ppp/3K4/3p4/P1r1b3/4P1QP/5PP1/R6R w - - 7 26 | e8d8 | Is the White king in check? | Yes | check |
3k4/1p5r/1Pp4p/3q4/4K1P1/7P/8/8 w - - 1 48 | d7d5 | Is the White king in check? | Yes | check |
2k2b1r/1bq2Npp/p1n2n2/2pN4/1p6/4P3/PP2QPPP/R1BR2K1 b - - 0 15 | Qxf7 | Does Black have any isolated pawns? | No | structure |
r4rk1/pp1q2pp/2pb4/3p1p2/3P2P1/5P1P/PP1QP1B1/2R1R1K1 b - - 0 18 | Rae8 | Is the move from a8 to b8 legal? | Yes | legality |
7Q/3p2P1/3p1p2/4bP2/b1P1Kp2/5P2/3P4/n2k4 b - - 0 1 | Nb3 | What piece is on e5? | Black Bishop | occupancy |
r2qkbnr/pb2pppp/p2p4/2P5/4P3/5N2/PPP2PPP/RNBQK2R w KQkq - 1 6 | c8b7 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/pb3p1p/Bp2p1p1/4b2P/4Q3/8/P4PP1/3R2K1 b - - 0 24 | Bxe4 | Identify any White knight outposts on the board. | None | outposts |
r1b2rk1/3q1ppp/p1pb4/1p1n4/3PR3/1BP3P1/PP1N1P1P/R1BQ2K1 b - - 4 16 | f5 | What piece is on f8? | Black Rook | occupancy |
b5rk/5p2/p2Q4/2P1p2p/7P/4q2P/PP3RB1/6K1 w - - 2 44 | c6 | What piece is on e5? | Black Pawn | occupancy |
r1b1k2r/1p1nq1bp/p2pp1p1/8/4Q3/8/PPP2PPP/RNB1RBK1 b kq - 1 13 | Ne5 | Is the move from d7 to b8 legal? | Yes | legality |
3k4/5P2/8/p3N3/P7/5N2/2K4p/5r2 b - - 1 77 | Ke7 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/2k5/8/1P6/P5p1/8/5K2/8 w - - 1 45 | d6c7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/2p1qppp/b4n2/p1b1p3/Pp2P3/1B3N1P/1PP2PP1/R1BQR1K1 b - - 2 16 | Rad8 | Identify any Black knight outposts on the board. | None | outposts |
6k1/1p4b1/3p2p1/1P1P4/1PQBnPp1/8/3q1NKP/8 w - - 8 45 | Be3 | What piece is on g8? | Black King | occupancy |
2r3k1/2q2p1p/1pNrp1p1/pPn5/2P1nPP1/P3QN1P/1K6/3RR3 w - - 1 29 | Nfd4 | Does White have any passed pawns? | No | structure |
4r2r/p2k1ppp/2pp4/1b6/6P1/2P1P2P/P4K2/3R2NR w - - 2 20 | d3b5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/4ppk1/6p1/4P2P/8/5K2/8/8 b - - 0 36 | g4h5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b4r/2q1kppp/p4b2/1pp1pPB1/2B4Q/2P5/PP4PP/3R1RK1 w - - 0 19 | Bd5 | What piece is on h4? | White Queen | occupancy |
2rr2k1/q4ppp/1p2p3/2n2n2/1Q3N2/P3PBP1/5P1P/1R1R2K1 b - - 2 24 | Rxd1+ | Does White have any isolated pawns? | Yes: a3 | structure |
r2qk2r/ppp2ppp/2n1bn2/8/1b6/2NB4/PPPBQPPP/R3K1NR b KQkq - 4 10 | O-O | What piece is on a4? | Empty | occupancy |
r3kb2/pp2r2Q/8/q2b1p2/8/1P4P1/PB3P1P/2R2RK1 w - - 1 27 | Qxf5 | What piece is on e7? | Black Rook | occupancy |
r3k3/pp1n1pb1/2p3p1/6Pr/3nP3/1PN5/1PbN1B2/2R1KBR1 w q - 2 23 | Ne2 | Identify any White knight outposts on the board. | None | outposts |
2kr3r/pbppq2p/1p2p2n/4P3/2P3p1/2NB1nP1/PP1N3P/R2Q1RK1 w - - 2 17 | d4f3 | Is the White king in check? | Yes | check |
5r2/7p/r4k2/p1pR1p2/R7/2P4P/6P1/6K1 w - - 0 33 | Rxc5 | Is the d-file open, semi-open, or closed? | open | files |
r2qkb1r/pQ3ppp/2p1p3/4Nb2/2P1p3/6P1/PP1P1PBP/nNBK3R b kq - 1 12 | Bg6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/1bq1bpp1/7p/2P1p3/1p1BP1n1/3B1N2/1PQ2PPP/R2R2K1 w - - 0 20 | c6 | Does Black have any passed pawns? | No | structure |
8/3k4/6Qb/7n/1p5p/5P2/1P2KpPP/8 b - - 0 47 | Nf4+ | What is the material balance in this position? | White is up 4 pawns of material | material |
r6k/1pp4n/5rbQ/2nPp2p/p1P4q/6RN/PPB5/1K4R1 w - - 2 30 | Rxg6 | Is the White king in check? | No | check |
rnbqkb1r/pppp2pp/5p2/4p3/2B5/2P2N2/PPP2PPP/R1BQ1RK1 b kq - 1 2 | Nc6 | Is the move from h8 to d5 legal? | No | legality |
8/2r2p1p/p7/kpp2p2/5B2/qPP4P/P4PP1/6K1 w - - 0 35 | Bxc7# | Does Black have any isolated pawns? | Yes: f5, f7, h7 | structure |
r1k4r/p1pq3p/7n/3p4/8/2N4Q/P4PPP/R3R1K1 w - - 1 19 | Qxh6 | What is the material balance in this position? | Equal | material |
r4rk1/1pp2ppp/p7/4p3/2P1P1n1/2N5/PP3PPP/R3R1K1 w - - 0 16 | Nd5 | What piece is on b7? | Black Pawn | occupancy |
8/1k5b/1n1K3P/3p4/4r3/5Q2/8/8 b - - 25 95 | Bg8 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
r2q1rk1/pp1nbpp1/4p2p/3n2P1/3p3P/5N2/PPPBQP2/2KR1N1R w - - 1 16 | gxh6 | Is the move from c2 to a7 legal? | No | legality |
r4k2/6pp/1p6/p2R4/8/8/5PPP/6K1 b - - 0 32 | Ke7 | Identify any Black knight outposts on the board. | a5, b4, c5 | outposts |
rnb1k1nr/pp1pppbp/6p1/2q5/4P3/2N5/PPPB1PPP/R2QKBNR w KQkq - 0 6 | Nd5 | Is the move from f2 to f3 legal? | Yes | legality |
1q1r1k2/5p1p/bn2pQ1b/5N2/5P2/8/PrP3PP/1K1RR3 w - - 0 22 | Qxb2 | Is the move from b1 to h7 legal? | No | legality |
8/8/5r2/p1R3p1/8/2P1P2k/PP3K2/8 w - - 2 47 | Kg1 | Is the Black king in check? | No | check |
1r1qr1k1/1pp1bpp1/2n1bn1p/p3p3/2P5/P1NPBNPP/1PQ2PBK/R3R3 w - - 5 15 | Nb5 | Is the Black king in check? | No | check |
r2qr1k1/pppb1pbp/3p2p1/3P4/2PNn3/4BB2/PPQ2PPP/4RRK1 b - - 1 16 | Ng5 | Identify any White knight outposts on the board. | None | outposts |
r7/7p/p1b3pk/4Q3/1p6/3B4/PPP1NK2/7q w - - 2 32 | Qf4+ | Is the e-file open, semi-open, or closed? | open | files |
5rk1/p1pq2pp/1pn1b3/3p2b1/3P1r2/1QPB2N1/PP4PP/1K3R1R w - - 10 19 | a8f8 | What is the material balance in this position? | Black is up 3 pawns of material | material |
7k/4pp2/4q1p1/1Q6/1p1P2P1/1Pb1PB2/5PK1/8 b - - 1 48 | Kg7 | Is the move from c3 to d3 legal? | No | legality |
r1bq1rk1/1p1p1ppp/4p3/pN6/2P3n1/P7/1PQBPKPP/3R1B1R w - - 1 13 | Kg3 | Does White have any isolated pawns? | Yes: e2 | structure |
r1b2rk1/1p3ppp/pb2pq2/8/2Pn4/2N3P1/PP2QPBP/R1BR2K1 w - - 4 17 | Qe4 | Is the move from d1 to f1 legal? | Yes | legality |
r4q1k/1pN2pp1/2n2n1p/p7/2P1p3/3bP1PN/P2P1PBP/R2QK2R b KQ - 0 18 | d5c7 | Identify any White knight outposts on the board. | d5 | outposts |
2r5/6Qp/1p2p1b1/3q4/3p2Pk/7P/PP6/5RK1 w - - 1 35 | Qh6+ | Are there any open files in this position? | Yes: c, f | files |
r5k1/r1qnbp1p/b1n1p1pP/2ppP3/pp3B2/1P1PNNP1/P1P1QPB1/R3R1K1 w - - 0 18 | Nxd5 | What piece is on d8? | Empty | occupancy |
r1b2rk1/p4p2/2pp3R/2n1q3/2P1n1P1/7P/PP3BB1/1R1Q2K1 w - - 0 26 | Bd4 | Identify any White knight outposts on the board. | f5, h5 | outposts |
N4bnr/pp1k1ppp/2n1p3/3pP3/2pP4/4BN2/Pqb1BPPP/R3QRK1 b - - 1 12 | Bb4 | What is the material balance in this position? | White is up 3 pawns of material | material |
5rk1/2qnppbp/p2pbnp1/1p4B1/3RPP2/1NP1Q2P/P1P1B1P1/1K5R w - - 0 17 | f5 | Is the White king in check? | No | check |
1k1r4/pp6/4pp2/4r3/8/2R1P1Q1/Pq5P/2R2K2 b - - 1 33 | a6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/p2n1ppp/bp2p3/1q1pP3/NP1Q1P2/P1P5/6PP/R2BK2R b KQkq - 0 16 | Rc8 | Identify any White knight outposts on the board. | None | outposts |
r6k/pp3Qpp/5p1P/5b2/8/8/PP1q1PP1/5RK1 b - - 0 4 | Rg8 | Is the Black king in check? | No | check |
rnbqkb1r/4npp1/1pp1p2p/pB1pP2P/3P4/P1N2N2/1PP2PP1/R1BQK2R w KQkq - 0 10 | Ba4 | Is the c-file open, semi-open, or closed? | closed | files |
r1bqkb1r/p4ppp/1nn5/3pPp2/1p1P1N2/2P5/1P4PP/R1BQKBNR w KQkq - 2 12 | Nf3 | What piece is on a2? | Empty | occupancy |
5r2/ppp2p1k/5P1p/5Np1/8/P7/1PP4R/1K2r2b w - - 2 31 | e8e1 | Is the White king in check? | Yes | check |
r1q1r1k1/pb1nbppp/1p6/2pP4/5B2/5NP1/PPQ2PBP/R2R2K1 b - - 0 16 | Nf8 | Does White have any isolated pawns? | Yes: d5 | structure |
r3r1k1/pp3ppp/3p1b2/2qNpP2/4P3/8/PP3RPP/R3Q1K1 w - - 2 19 | Rc1 | Is the move from e4 to c4 legal? | No | legality |
8/7p/4Rp2/1k6/1ppP4/4P3/r2B1PPP/5RK1 w - - 1 32 | Bc1 | Identify any Black knight outposts on the board. | a3, b3, c3 | outposts |
3r3r/pkpq1pp1/1pnb4/1N1p1b2/Q2P3p/4P1PP/PP1N1PBK/2R2R2 w - - 0 17 | Rxc6 | Identify any White knight outposts on the board. | None | outposts |
r1bqkb1r/pp2pppp/2n2n2/3p4/3P4/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 3 6 | Bd3 | Is the move from f1 to c4 legal? | Yes | legality |
r1b1k1nr/bpp1qppp/p1np4/P3p3/2BPP3/2P2N2/1P3PPP/RNBQ1RK1 w kq - 1 9 | h3 | What piece is on a7? | Black Bishop | occupancy |
5knQ/1b1r2p1/pp6/1q3p2/7P/2R1N3/PP2nPP1/4R1K1 w - - 10 29 | f4e2 | Is the White king in check? | Yes | check |
8/3R4/4b3/8/7P/1P3Pk1/3p3r/3B2K1 w - - 4 55 | Rg7+ | Is the White king in check? | No | check |
4r3/2r2k1p/3Rbqp1/2pR1pQ1/2B1p1P1/2P5/1P3P1P/6K1 w - - 7 34 | Qf4 | Are there any open files in this position? | Yes: a, d | files |
8/p6p/7p/7P/5rk1/8/7K/8 b - - 3 44 | g2h2 | What is the material balance in this position? | Black is up 7 pawns of material | material |
8/3Nk2p/8/1R6/8/1b4PP/2r2K2/8 w - - 5 42 | Ke3 | What piece is on a4? | Empty | occupancy |
r1b1kb1r/pp1n1ppp/2n1p3/q2pP3/NP1p1P2/2P1BN2/P5PP/R2QKB1R b KQkq - 0 10 | Qc7 | Identify any Black knight outposts on the board. | c3, e3 | outposts |
rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N2N2/PP2PPPP/R2QKB1R w KQ - 4 6 | Qc2 | What piece is on b8? | Black Knight | occupancy |
7r/3kb3/pp1p2R1/2p2R2/P1P1P2p/3P3K/8/8 w - - 2 38 | e6d7 | What is the material balance in this position? | White is up 1 pawn of material | material |
1rr3k1/2bq1p1p/4b1pP/ppBpPp2/1P6/P1P2N2/3Q1PP1/R3R1K1 b - - 5 28 | Bd8 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/5ppp/1p1q2n1/p1pP1b2/P1P5/1Q3N1P/5PP1/R1B2RK1 w - - 0 17 | Ra2 | What piece is on b2? | Empty | occupancy |
2k2b2/1pp3r1/p3p1B1/4P2p/7B/2P1N3/q4PP1/3R1RK1 w - - 1 24 | f7g7 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/1p3pkp/1p4p1/8/8/1P3P2/P2n2PP/4K3 b - - 0 26 | f2e1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
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