fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/8/8/p7/8/kQK2P2/6P1/8 b - - 0 53 | c4b3 | Is the White king in check? | No | check |
r1b1r1k1/1p2qppp/1np2n2/p1b1p3/P3P3/1P4P1/1BPNQPBP/R3NRK1 w - - 2 14 | Nd3 | Is the move from b2 to c8 legal? | No | legality |
1r1r1k2/pp3p1p/2n3p1/1R1p4/3P3P/2P5/P1B2PP1/4R1K1 w - - 0 19 | Reb1 | Is the move from e1 to a1 legal? | Yes | legality |
rnbqkbnr/pp2pppp/2p5/3p4/3PP3/8/PPP2PPP/RNBQKBNR w KQkq - 0 3 | e5 | What is the material balance in this position? | Equal | material |
r4rk1/p1p1b1pp/2R5/4pp1n/8/2NP1PPq/PP2PB2/4QRK1 b - - 2 19 | Bh4 | Is the move from f5 to d7 legal? | No | legality |
8/pp4p1/5b2/P1RP1k1p/4pB1P/5PK1/1r6/8 w - - 1 36 | d6+ | Are there any open files in this position? | Yes: c | files |
r3k2N/pppqbppp/3nb3/3p4/3n1B2/2NP4/PPP2PPP/R2QKB1R w KQq - 7 11 | d8d7 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/8/8/1NN5/8/7N/8/k3K3 b - - 1 1 | Ka2 | What piece is on e6? | Empty | occupancy |
8/pp3r2/4p2p/1P1p4/P3k1P1/2R1P1P1/5K2/8 w - - 1 35 | d7f7 | Is the White king in check? | Yes | check |
4r1k1/pp3p1p/2p2np1/3p1n2/1P1q4/P1N4P/2QN2BK/1RR5 b - - 1 27 | Qf4+ | Is the move from a7 to b2 legal? | No | legality |
r2q1rk1/p2bnpbp/3p1np1/1pp1p1B1/1PP5/P1NP1NP1/2Q1PPBP/R4RK1 w - - 0 12 | Rab1 | What is the material balance in this position? | Equal | material |
3k4/2p1B3/p4pNp/nb1B4/3P4/2K4P/8/4R3 b - - 7 41 | c5e7 | Is the Black king in check? | Yes | check |
6k1/5pp1/7p/8/2n1P2P/p1r3P1/5P2/R1B2K2 b - - 1 39 | f6 | Does Black have any passed pawns? | Yes: a3 | structure |
2r1rbk1/2q3p1/p3p1Pp/1pnbPP1R/3Np1B1/2P1B3/PPQ5/1K1R4 b - - 0 23 | exf5 | Is the White king in check? | No | check |
2b2r1k/8/p3p2p/3p4/4pq2/Q7/PPP1B1rP/1K1RR3 w - - 0 26 | Bxa6 | Are there any open files in this position? | Yes: f, g | files |
r1bq4/pp3kb1/2npp1np/2p4Q/2B1p3/2NP4/PPP3PP/R1B3K1 w - - 0 15 | Bxh6 | Does White have any isolated pawns? | No | structure |
3r1r1k/6bp/bqn3p1/4P3/pppPBP2/2P5/PP1B2PP/R2Q1RK1 b - - 0 21 | a3 | Identify any Black knight outposts on the board. | None | outposts |
r5bk/3R4/2p1PN1p/p4P2/6p1/8/P5PP/6K1 w - - 0 35 | e7 | Identify any White knight outposts on the board. | e6 | outposts |
r1n2rk1/pp1q2pp/2n2p2/1BPp4/5Bb1/5N2/PP2QPPP/R3R1K1 w - - 3 19 | Qd3 | Is the White king in check? | No | check |
rn2k2r/pp3pp1/4b3/q2p4/1b1Pp3/1P4P1/PBQ1P1BP/R3NRK1 w kq - 0 15 | Qd1 | What piece is on h7? | Empty | occupancy |
r2qkbnr/p4ppp/2p1p3/3p4/4P3/8/PPPN1PPP/R1BQK2R w KQkq - 0 9 | c4 | Are there any open files in this position? | No | files |
r3k2r/1ppq2pp/pbp1np2/4p3/2N1P2P/1P1P4/1PP2PP1/R1BQK2R w KQkq - 0 15 | h5 | Does White have any passed pawns? | No | structure |
r2q3r/1p3pk1/2npb1pp/2bNp3/p3P3/P1P1NP2/1P1Q2PP/1K1R1B1R b - - 0 18 | Bxe3 | Is the move from d8 to c7 legal? | Yes | legality |
2r2k2/2r2p2/P3p1p1/p1Np3p/3P3P/1P2PP2/3K2P1/R7 w - - 4 34 | Rxa5 | Does Black have any isolated pawns? | Yes: a5 | structure |
r1bq1rk1/ppp1n1bp/3p1n2/P1PPp1p1/1P2Pp2/2N5/3NBPPP/R1BQ1RK1 w - - 0 14 | g4 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/1b2bp1p/p3pnp1/np1P2B1/7Q/2N2N2/PPB2PPP/R4RK1 b - - 0 15 | b4 | Does White have any isolated pawns? | Yes: d5 | structure |
2k5/5p2/p1nqp3/7P/8/5QrP/8/1R2R2K w - - 2 43 | Red1 | Is the move from b1 to d1 legal? | Yes | legality |
rn1qk1nr/5pbp/b2p2p1/pp1Pp3/8/PBN2Q2/1PP1NPPP/R1B1K2R w KQkq - 0 11 | Ne4 | Are there any open files in this position? | No | files |
3r2k1/1p1r1pp1/p6p/2P1p3/1P2QbP1/P1qP1P1P/R3KN2/7R b - - 0 31 | Bg3 | Is the move from g7 to g6 legal? | Yes | legality |
3q1rk1/p4ppp/1p1P1n2/2r1N3/3Q4/1P6/5PPP/3R1RK1 b - - 0 2 | Rd5 | Does White have any passed pawns? | Yes: d6 | structure |
1rbq1rk1/pp2bppp/2nppn2/2p5/4P3/2PP1NP1/PP1N1PBP/R1BQR1K1 b - - 0 9 | b6 | What is the material balance in this position? | Equal | material |
rn2k2Q/p3qp2/1pp5/2bpp2p/4Pn2/N1N5/PPPP1PPP/R1B1KR2 b Qq - 0 14 | g7h8 | Is the White king in check? | No | check |
rnbqkb1r/pp1p1ppp/5n2/4p1B1/2Pp4/5N2/PP2PPPP/RN1QKB1R b KQkq - 3 5 | c1g5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qk2r/ppp1bppp/3p4/3Np3/2BPP1P1/3n3P/PP1P1P2/R1B1K2R w KQkq - 0 12 | c5d3 | Is the Black king in check? | No | check |
1r3rk1/5p1p/2pb4/1p1n1bp1/3P4/1BP3P1/1P3P1P/RNB1RK2 b - - 2 20 | Rfe8 | What piece is on e1? | White Rook | occupancy |
r1b1kb1r/2pp1ppp/p3Q3/8/3P4/7P/PPP2PP1/RN2K2R b KQkq - 0 12 | e2e6 | Is the Black king in check? | Yes | check |
r1bqk1nr/1p1p2pp/p2Qpp2/4n3/2P5/2N1B3/PP3PPP/R3KB1R b KQkq - 1 11 | Ne7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk2r/pppnbp1p/2np2pB/4P3/2P5/5NQ1/P3BPPP/RN1R2K1 b kq - 3 15 | Ncxe5 | Does White have any passed pawns? | No | structure |
rq3rnk/1b1Pb2p/1B4p1/2P1p3/NQ1np3/1P5P/2BR1PP1/R5K1 b - - 2 33 | Nf6 | Does White have any passed pawns? | Yes: b3, c5, d7 | structure |
1r2r1k1/pb3pp1/1pq4p/2b5/3B4/1BP2P1P/PP1Q2P1/3RR1K1 b - - 2 21 | e2d2 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnbqkbnr/pppp1ppp/8/8/4P3/5Np1/PPPP3P/RNBQKB1R b KQkq - 1 4 | gxh2 | What piece is on d1? | White Queen | occupancy |
5r2/1R1R1pk1/3b1r1p/3Bp1pP/4K1P1/4PP2/3P4/8 w - - 5 41 | Bc4 | Is the move from d7 to c7 legal? | Yes | legality |
r4r2/4q1kp/2p1bpp1/Pp6/4PR2/3P3P/2PN1QP1/5R1K b - - 0 26 | c5 | Identify any White knight outposts on the board. | None | outposts |
rn1qkb1r/pp3pp1/4p1P1/2Ppn2p/6PP/2N5/PPP1N3/R1BQKB1R b KQkq - 0 11 | Nf3+ | Are there any open files in this position? | No | files |
8/2qbn1k1/1p2ppp1/7p/1P1N3P/6P1/P2Q1PB1/6K1 w - - 3 41 | b5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r1bk3r/ppN2p1p/2np4/6qn/2NbPpp1/P2K4/1PP1B1P1/R1BQ3R w - - 1 15 | Nd5 | Identify any White knight outposts on the board. | d5, f5 | outposts |
1k1b3r/pp1q2r1/2n5/1QPp1pPb/3P3p/1R5P/P3N1B1/1RB3K1 w - - 9 29 | Nf4 | Is the move from b3 to e3 legal? | Yes | legality |
1k2r2r/2p1P3/p2p2pp/1q1b4/1pNB2QP/1Pb5/5PP1/3R1RK1 b - - 6 27 | Rhg8 | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/bpp1np1p/3p1p2/pPP1p3/3P2b1/P3PN2/1B3PPP/R3KB1R w KQ - 1 16 | b6 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/pp1b4/2p4q/3p1p2/3P2np/2NBP1P1/PP3PK1/R2Q3R b q - 1 1 | h3+ | Is the move from a7 to a7 legal? | No | legality |
8/p5k1/5p2/2P1pP2/4N1P1/P2K4/1Pn4P/8 b - - 2 39 | Nd4 | Is the move from c2 to a3 legal? | Yes | legality |
2kr2nr/1p4pp/p3p3/2p5/P1P2bP1/2N3P1/1PP5/2K1R2R w - - 0 20 | d6f4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
5rk1/pp1rbp1p/2nNb1p1/4p3/4B3/4B3/PPPR1PPP/3R2K1 w - - 0 19 | Bxc6 | What piece is on h6? | Empty | occupancy |
5k2/8/5P2/KB6/8/P7/2b5/8 b - - 0 6 | Kf7 | Is the move from c2 to d7 legal? | No | legality |
6rk/1p5p/p2p3q/1p1Ppbr1/8/2PP1Q2/PP3RPN/4R2K b - - 8 28 | Qg6 | Is the move from g8 to g7 legal? | Yes | legality |
8/p3k3/P4n2/7p/3K3P/8/4B1P1/8 w - - 3 47 | Ke5 | Does Black have any passed pawns? | No | structure |
4kb2/1q3p1p/5p2/8/2p4P/P1QbPn2/1P3P1P/2RK3R b - - 6 23 | Ng1 | Identify any Black knight outposts on the board. | None | outposts |
r2q1k1r/pp1nb1p1/4Q1p1/3p3P/b1p2B2/2P2N1R/PP1R1PP1/2K5 w - - 0 22 | hxg6 | Is the move from f4 to b8 legal? | Yes | legality |
r2q2k1/4br1p/pn1p2pB/Pb1Pp3/p3B3/5N1P/2Q2PP1/R3R1K1 b - - 2 23 | Nc4 | Identify any Black knight outposts on the board. | b3, d4 | outposts |
r1r2k2/p3bp1p/2bpP2P/q2p4/1p1BP3/8/PPP1B2P/2KR2R1 w - - 1 21 | Rdf1 | Does White have any passed pawns? | No | structure |
r2qkb1r/pp1n1ppp/2pp1n2/3Pp2b/4P3/5P2/PPPNQ1PP/RNB1KB1R w KQkq - 0 8 | c4 | Is the b-file open, semi-open, or closed? | closed | files |
2r2rk1/ppN2ppp/2bp4/2b5/2Q1P2q/8/PPPB1PPP/R4RK1 w - - 1 16 | Nd5 | Are there any open files in this position? | No | files |
2kr1bnr/ppp1pppp/8/q2n4/8/P1N2P2/1P1B1PPP/R2QKB1R w KQ - 0 10 | Na4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/6p1/4P2p/5K1k/7P/8/1R6/4r3 w - - 1 22 | Rb4 | Does White have any passed pawns? | Yes: e6 | structure |
3rk2r/Qp4pp/5nn1/3N4/4P3/2N5/PP4PP/R3K2R w KQ - 1 19 | g8f6 | What is the material balance in this position? | White is up 11 pawns of material | material |
r1bq1rk1/pppnb1pp/2n2p2/1B1pP3/3P4/5N2/PP1N1PPP/R1BQ1RK1 w - - 4 10 | e6 | Identify any White knight outposts on the board. | None | outposts |
3r4/7p/1p6/p4pk1/P5PP/6K1/3p4/3R4 b - - 0 40 | h3h4 | Is the Black king in check? | Yes | check |
r4r2/2q2pbk/1n1pb1pp/4p3/2p1P3/5NBP/BPPQ1PP1/R2R2K1 b - - 1 25 | c3 | Is the move from b6 to d7 legal? | Yes | legality |
r1bqk2r/1p2bppp/p1n1pn2/3p4/2PP4/PPN2N2/5PPP/R1BQKB1R w KQkq - 1 9 | c5 | Identify any White knight outposts on the board. | None | outposts |
5k2/p2b1Bp1/2pq3r/1p6/3P3p/1Q5P/PP3PP1/4R1K1 b - - 0 23 | Qxd4 | Identify any Black knight outposts on the board. | d5 | outposts |
r2r2k1/1bq2pp1/ppnp4/4p1bp/PPP1P3/2Q1N3/1B3PPP/3RRBK1 b - - 1 21 | Nd4 | Does Black have any passed pawns? | No | structure |
r1bqkr2/ppppbpQp/8/3N1n2/P7/8/1PPP1PPP/R1B1R1K1 b q - 4 12 | f6 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
rn1qkb1r/ppp2ppp/3p4/4Pb2/2P5/P1n5/1PQ1PPPP/R1B1KBNR w KQkq - 0 7 | Qxf5 | Identify any Black knight outposts on the board. | None | outposts |
r2kr3/1p1bbppq/p2p4/2pn3p/P4P1N/3P1N1P/1PPB1QP1/R3R1K1 b - - 1 22 | Bc6 | Identify any White knight outposts on the board. | None | outposts |
6k1/4ppbp/2R3p1/8/3Pp3/4B2P/P4PP1/1r4K1 w - - 0 27 | b8b1 | Is the White king in check? | Yes | check |
r2kb2r/1p3pp1/p3p3/1P1pP1N1/P2P1n1P/3B4/3K1P2/2R3R1 w - - 1 25 | b6 | What is the material balance in this position? | Equal | material |
r5k1/2pb3p/pp1pN3/3P4/2P3pq/2QB2PP/PP3K2/2R5 b - - 0 31 | g2g3 | What is the material balance in this position? | White is up 3 pawns of material | material |
rnb2bnr/p3k1pp/p7/5p2/8/1P2Q3/1B1P1PPP/RN2K1NR b KQ - 2 14 | d3e3 | Is the Black king in check? | Yes | check |
r4rk1/2p3p1/2npp2p/1p2p3/p3P1PP/P1PP4/1P1R1P2/2KN3R b - - 0 19 | Na5 | Is the move from f8 to f4 legal? | Yes | legality |
5r2/p3b1pk/2p4p/2n2p2/2B2P2/2P1p1PP/P1Pr1R2/2R3K1 w - - 0 26 | Re2 | Is the move from g1 to b7 legal? | No | legality |
6k1/pp4bp/6p1/5p2/2Pn1qn1/5BN1/PP5P/R4K1Q b - - 9 28 | Nxf3 | What is the material balance in this position? | White is up 1 pawn of material | material |
4r1k1/3nbppp/b1r2B2/p7/2p5/6P1/P2N1KBP/1R1QR3 b - - 0 22 | Bc5+ | Is the move from c6 to c7 legal? | Yes | legality |
rn1qr1k1/1p2bpp1/p3p3/3pP2Q/P2P1B2/2R4P/1P3PP1/R5K1 w - - 2 21 | Bh6 | Is the move from b2 to a1 legal? | No | legality |
N5k1/3b3p/1p3r1q/2pPpp2/2P5/PQ1NbP2/4B1PP/R2R3K b - - 0 25 | Qxh2+ | Identify any White knight outposts on the board. | e6 | outposts |
rn1q1rk1/pp3ppp/2p1pn2/8/2NPP1b1/2RBB3/P1PQ2PP/4K2R w K - 3 15 | O-O | Does Black have any passed pawns? | No | structure |
r1bq1rk1/ppp1bppp/2np1n2/1B2p3/4P3/2PP1N1P/PP2QPP1/RNB1K2R b KQ - 0 7 | d5 | Are there any open files in this position? | No | files |
r4bk1/1p4r1/pB1p2n1/3Pp2p/4Pp2/5Pp1/1PR1b1PP/4NR1K w - - 0 31 | Rxe2 | Is the move from e4 to b6 legal? | No | legality |
r2qk1nr/pppB2bp/4ppp1/3Pp3/4P3/2N2N2/PPP2PPP/R2QK2R b KQkq - 0 10 | b5d7 | Is the Black king in check? | Yes | check |
r4rk1/pbq1bpp1/2p1pn1p/3p4/1PP5/P1N3P1/2Q1PPBP/R1BR2K1 w - - 1 14 | cxd5 | Does Black have any passed pawns? | No | structure |
2rqr1k1/4bpp1/p1b1pn1p/3p4/2p2P2/2P1B1N1/PP4PP/1BRQ1RK1 w - - 0 19 | b7c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1rbqr1k1/2p1bpp1/2np1n1p/1p1Np3/4P3/1B1P1N1P/1PP2PP1/R1BQR1K1 b - - 3 13 | Bf8 | Is the a-file open, semi-open, or closed? | open | files |
3r2k1/1p3pPp/8/2p1p1P1/p1N1q3/P6Q/7R/K7 w - - 0 40 | Qh5 | Is the move from a1 to h1 legal? | No | legality |
r1br2k1/1q3ppp/pnp1pb2/8/N7/6P1/PPPB1PBP/1R1QR1K1 w - - 11 18 | Nc5 | What piece is on b1? | White Rook | occupancy |
3r1nk1/4RR1p/p2q2pB/1ppr4/3p1PP1/3P3P/PP4Q1/6K1 w - - 10 33 | Bxf8 | What piece is on g1? | White King | occupancy |
7r/p5k1/1p4b1/3BPp2/3P1Rp1/4P1P1/P1r4Q/1R3K2 b - - 0 35 | Rhxh2 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
r1bqr1k1/pp3ppp/2n5/2p1p3/2P5/3PbNP1/PP2B1KP/RN1Q1R2 w - - 0 14 | e6e5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k4r/pb1n2b1/1q2p1P1/1pPnP2B/2p3Q1/6B1/PP3PP1/R4RK1 b - - 0 24 | Nxc5 | Does White have any passed pawns? | Yes: c5, g2, g6 | structure |
1rq1r1k1/1p1b1pbp/pB1pn1p1/P2Np3/1RP1P3/3P2PP/5PB1/3Q1RK1 w - - 3 20 | Rb1 | Does Black have any passed pawns? | No | structure |
5k2/p1rRb2Q/1p3p2/n1q5/8/P7/5PPP/5RK1 w - - 3 28 | Qh8+ | What is the material balance in this position? | Equal | material |
k7/1p4R1/p1qrp2r/4n3/PQ2Pp2/2N1b3/1PP1B3/1K6 w - - 0 35 | Rg8+ | Identify any White knight outposts on the board. | None | outposts |
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