fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3r1r1k/pb3ppp/1p2p1n1/8/2PPq3/P3Q2P/5PP1/2BRRBK1 b - - 1 25 | Qxe3 | Identify any White knight outposts on the board. | None | outposts |
r4k2/pnpq1p2/4pQp1/1p2P1Nr/7p/1B2B3/PPP2PPP/2K5 w - - 0 25 | Bxe6 | Is the White king in check? | No | check |
r3r1k1/pp3pp1/5nnp/2qP1Q2/P3P3/2N2P2/1P2B1PP/R4K1R w - - 0 23 | Rd1 | Is the c-file open, semi-open, or closed? | open | files |
r1R4r/4Q2p/5ppk/qp6/3P4/8/PP3PPP/6K1 w - - 5 29 | Rc3 | Does Black have any isolated pawns? | Yes: b5 | structure |
8/5kp1/1p2p3/4P3/1p6/P1p3P1/1P1K3P/8 w - - 0 38 | Kc2 | Does White have any isolated pawns? | Yes: e5 | structure |
r3k2r/ppp1b1pp/2n3n1/4p2q/2PpN3/3N2P1/PP2PPbP/R1BQ1RK1 w kq - 0 15 | Kxg2 | Is the Black king in check? | No | check |
2k4r/pp3ppp/2p1p3/4PP2/1b2P3/4nN2/P1K4P/3R4 w - - 1 23 | c4e3 | Is the White king in check? | Yes | check |
7R/ppkb4/4p3/4P2p/2pP1P2/K1q1n3/P3n3/4R3 w - - 0 42 | c2c3 | Is the White king in check? | Yes | check |
r2qrnk1/pp4pp/2pbbp2/3p4/3P1P1N/3BN1P1/PPQ2P1P/R4RK1 b - - 0 15 | Bc7 | Does Black have any isolated pawns? | No | structure |
r3qb1r/pp1k3p/3PNp2/1pQ5/8/8/PPP2PPP/R3K2R w KQ - 3 16 | O-O-O | What piece is on c8? | Empty | occupancy |
3r1r1k/pp2q2p/1bn2p1N/2np1PpQ/8/PP4N1/2P2BPP/R4R1K w - - 4 27 | h4 | What piece is on f8? | Black Rook | occupancy |
8/1p6/kb6/8/6pQ/6P1/r3r2P/1R5K w - - 2 52 | a7a6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2q1rk1/pbpp1ppp/np1n4/3P4/5B2/2b2NP1/PP2PPBP/R2Q1RK1 w - - 0 13 | bxc3 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
2b5/pp3kp1/5qn1/7Q/3pB3/1P5P/P1P2PP1/7K w - - 0 28 | f4 | Is the move from c2 to c4 legal? | Yes | legality |
r4rk1/1bq1bppp/pp1p1n2/4n3/P3PB2/1NN2B2/1PP3PP/R3QRK1 w - - 3 15 | Kh1 | Are there any open files in this position? | No | files |
2kr2r1/pp1b3p/2n1p2p/qN1pP3/P1p4n/2P3P1/2PBBP2/R2QR1K1 b - - 0 20 | Kb8 | Identify any White knight outposts on the board. | h4 | outposts |
r5k1/p1Pqnpbp/b2Bp1p1/8/P1Np4/6P1/4PP1P/R2Q1RK1 w - - 0 21 | Rb1 | Does White have any passed pawns? | Yes: c7 | structure |
8/8/Kp3n1p/1Pk3pP/P5P1/5B2/8/8 w - - 3 54 | Bc6 | What piece is on a6? | White King | occupancy |
rnbq1rk1/1pp2pp1/p3pb1p/3p4/2PP4/2N1PN2/PP3PPP/2RQKB1R w K - 0 9 | Bd3 | What is the material balance in this position? | Equal | material |
r1bq1rk1/ppp3pp/3b1p2/3p1n2/3P1B2/2P2P2/PP2NQPP/R3KB1R w KQ - 1 14 | Bd2 | Identify any White knight outposts on the board. | None | outposts |
8/1Q6/8/3K4/8/1k6/8/q7 b - - 3 64 | e7b7 | Is the Black king in check? | Yes | check |
q4rk1/p1p2ppp/3p4/4B3/4P3/3P1b2/P1P2PPP/Q4RK1 b - - 0 13 | Bxe4 | Does Black have any isolated pawns? | Yes: a7 | structure |
8/8/7p/4k1pK/8/5P1P/8/8 b - - 0 67 | Kf5 | What piece is on f3? | White Pawn | occupancy |
b5rk/5p1p/p2p2r1/4p3/2P2n1q/1Q4N1/PP3RPP/3R1BK1 b - - 6 38 | Rh6 | Is the move from g6 to h6 legal? | Yes | legality |
5r2/p2q1kpp/1pNP1p2/3R4/8/1P6/5PPP/2R3K1 w - - 4 7 | Nb4 | What piece is on d5? | White Rook | occupancy |
r1bq1rk1/pp1n1ppp/2p2n2/4p3/1bPP4/3BPN2/PB1N1PPP/R2QK2R w KQ - 0 10 | dxe5 | Are there any open files in this position? | No | files |
5rk1/1b4pp/p3Q3/1p3p2/1P2pNq1/P3P1P1/1Br2P1P/R4RK1 b - - 0 24 | d6e6 | Is the White king in check? | No | check |
rnbq1rk1/ppp1bppp/4pn2/3p4/2PP4/5NP1/PP1BPPBP/RN1Q1RK1 b - - 3 7 | c6 | Is the move from f6 to d7 legal? | Yes | legality |
2n2rk1/1br3pp/p2bRp2/1p1p4/1N1P2PP/P2B1P2/1P6/1KBR4 w - - 8 26 | h5 | Does Black have any isolated pawns? | Yes: d5 | structure |
r1bqk2r/pppp1ppp/2n2n2/2b1p3/2B1P3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 1 5 | h3 | Is the Black king in check? | No | check |
r2qk2r/ppp1bppp/1nn1b3/4p3/8/P1NP1NP1/1P2PPBP/R1BQ1RK1 b kq - 0 9 | a5 | What piece is on e1? | Empty | occupancy |
8/1p6/6r1/p7/8/5k2/8/7K b - - 12 50 | h2h1 | What is the material balance in this position? | Black is up 7 pawns of material | material |
2k2r2/p1p5/1p5b/1P1p3p/P2P3P/R1P5/6P1/1N3K2 w - - 1 32 | h8f8 | Is the Black king in check? | No | check |
6k1/1R4p1/1p2p2p/8/4P3/P1N5/1P1r1KP1/8 w - - 5 29 | d3d2 | Is the White king in check? | Yes | check |
r1bN3r/pp3kbp/2n2n2/3p4/8/8/PPP1QPPP/RNB1KB1R b KQ - 0 10 | e6d8 | Is the White king in check? | No | check |
r3k2r/pR2np1q/2n1p1pp/P3P3/1Bp2PPP/5N2/5K2/R2Q4 b kq - 3 23 | Nxb4 | Identify any White knight outposts on the board. | None | outposts |
3b2k1/1r3ppp/4q3/2Q1p3/1P6/p4P1R/6PP/R6K w - - 0 38 | Rxa3 | Is the move from a1 to c1 legal? | Yes | legality |
2K5/2P1k3/8/8/8/1r6/8/7R w - - 0 1 | Re1+ | Identify any Black knight outposts on the board. | None | outposts |
2r2r2/pb1R1pkn/1p2pb2/2p5/2P2B2/5P2/PP5P/1K3Q2 w - - 2 25 | Rxb7 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r1bq1rk1/pp1nbppp/2p1pn2/3p4/2PP1B2/2N1PN2/PPQ2PPP/3RKB1R b K - 1 8 | Nh5 | What piece is on e1? | White King | occupancy |
2kr3r/1pp2p2/P2p4/3P2p1/2P1p1p1/4P1P1/P1K3NP/5RNn w - - 0 24 | Rxf7 | Are there any open files in this position? | No | files |
rnbqkb1r/1p3pp1/p2ppn1p/8/3NP1P1/2N1B3/PPP2P1P/R2QKB1R w KQkq - 0 8 | f4 | What piece is on a5? | Empty | occupancy |
3kr3/ppBb2pp/8/3p4/4r3/8/PP4PP/2R4K b - - 7 24 | d6c7 | Is the Black king in check? | Yes | check |
2r2rk1/1p3ppp/p7/1b1p4/8/1B3N1P/PR3PP1/3R2K1 b - - 0 24 | h2h3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/pbq1bppp/1pn1p3/2p5/3PP3/P1PB1N2/1B2QPPP/3RK2R b K - 0 14 | Na5 | What piece is on f3? | White Knight | occupancy |
8/4p3/3k4/3P1bp1/8/K5P1/B7/8 b - - 0 59 | Kc5 | Are there any open files in this position? | Yes: a, b, c, f, h | files |
r2qk2r/1p2bppp/p1n1b3/4p3/N3Q3/4BN2/PP3PPP/R2R2K1 b kq - 2 17 | Qa5 | Identify any Black knight outposts on the board. | d4 | outposts |
2r3k1/6p1/4b3/1P2B3/B2p3Q/P3n2P/6PK/5r2 b - - 2 35 | Nf5 | Identify any Black knight outposts on the board. | c3, e3 | outposts |
r1b2rk1/pp3pp1/1qpp2p1/6B1/1bB1PRn1/2NP4/PPP3PP/R3Q2K b - - 0 14 | Ne5 | What is the material balance in this position? | Equal | material |
2rqk2r/1p1nbp2/p2pbnp1/P3p3/4P2p/1NN1BP2/1PPQB1PP/R4RK1 w k - 0 14 | Nc1 | What piece is on g4? | Empty | occupancy |
2r5/1p2krpp/p3p3/4Bp2/1n1Pn3/2PB3P/PPK2PP1/3R1R2 w - - 2 25 | d5b4 | Is the White king in check? | Yes | check |
2r2rk1/p1q2pp1/1p6/n5R1/8/P7/1B2QPPP/5RK1 b - - 0 22 | f6 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
6nr/1b4pp/ppkrR3/1pb5/5B2/8/PP3PPP/2RQ2K1 w - - 8 23 | Qxd6# | Are there any open files in this position? | Yes: c, d, e | files |
2r3k1/5ppp/4rb2/1q1R4/1P6/PB3Q2/7P/R6K b - - 0 31 | Qb6 | Does White have any isolated pawns? | Yes: h2 | structure |
8/1K1k4/1P1p3p/b2Pp1pP/2P1P1P1/8/8/8 b - - 0 67 | Bb4 | Are there any open files in this position? | Yes: a, f | files |
8/8/7B/7p/8/2k2bP1/2p5/4K3 w - - 7 88 | Bg7+ | What is the material balance in this position? | Black is up 1 pawn of material | material |
4r3/2p5/1r4kp/p2Pp2R/2KN1PP1/PP6/8/8 w - - 0 60 | fxe5 | Does Black have any isolated pawns? | Yes: a5, c7, e5, h6 | structure |
r2qk1r1/pb3p2/1n3n1p/1NbP4/2B3pP/6B1/PP3PP1/2RQ1RK1 b q - 2 18 | Nh5 | Identify any White knight outposts on the board. | c6 | outposts |
2r2k2/4pp1p/P2p2p1/1p1r4/5PPP/PK2R3/2P5/5B2 w - - 0 30 | Rc3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/5p2/pk2p1pp/1n2P3/BPK2PPP/8/8/8 w - - 1 3 | Bxb5 | What piece is on b3? | Empty | occupancy |
8/8/3kpn2/5p2/1pBPpPp1/pP2P1P1/P2K4/8 w - - 3 3 | Ke1 | Is the White king in check? | No | check |
5rk1/p4R1p/8/8/8/1P6/1PPK3R/8 b - - 0 32 | Rxf7 | Is the Black king in check? | No | check |
r1bq1r1k/1p2b2p/ppnp4/3Bp3/4P1p1/2PP4/PP1N1PPN/R2QR1K1 b - - 1 16 | Bg5 | Are there any open files in this position? | No | files |
6k1/1p1b1qpp/2pb1pn1/p2p1n2/P2P4/2P3P1/1P1B1PBP/3QNNK1 b - - 0 23 | Bc7 | Is the move from f5 to h4 legal? | Yes | legality |
3RR3/5k2/1r3p1p/1p1p4/3P1p2/pPP2b2/P2K3P/8 w - - 0 43 | Rb8 | Is the g-file open, semi-open, or closed? | open | files |
r2qk2r/ppn4p/2pbbpp1/3p1p2/3P4/2PBPQ1P/PP1NNPP1/R3K2R w KQkq - 1 11 | g4 | Are there any open files in this position? | No | files |
r3k2r/p5pp/b3n3/3p4/3K1P2/2P5/PP4PP/RNB4R w kq - 1 18 | g5e6 | Is the White king in check? | Yes | check |
r4k2/1bppbp1p/pp1n4/4B1p1/P2P4/2N3P1/1PP2P1P/4RBK1 b - - 3 19 | f6 | Identify any Black knight outposts on the board. | None | outposts |
r2r2k1/p4p1p/1pp3pQ/8/3P1n2/1B6/PP4qP/2R4K w - - 0 25 | f3g2 | Is the Black king in check? | No | check |
8/5pkp/2p3p1/p3p3/2P1N3/1P4P1/P4P1P/1r3BK1 b - - 0 27 | Rb2 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/4n1Q1/p3k1p1/5p1p/4q3/2B5/8/6K1 w - - 6 66 | Bf6 | What piece is on b5? | Empty | occupancy |
1k1r3r/pb2b1p1/1p1pB1pp/3Pp1q1/3pP3/1P6/PB1PQ3/1K4RR b - - 9 24 | Qf6 | Is the move from d6 to b2 legal? | No | legality |
4rnk1/pp2b3/4p1R1/1q1pP2P/1r1P1P2/3QBN2/1P6/7K b - - 0 29 | Kh7 | Is the move from f8 to g6 legal? | Yes | legality |
6k1/3p2pp/3Nb3/p7/1r6/3p4/1P1R1PPP/4R1K1 w - - 2 31 | Rxd3 | What piece is on a7? | Empty | occupancy |
r3k2r/pppq2pp/2nb1p2/3p1b2/3P3B/2P2N2/PP3PPP/R2QKN1R w KQkq - 0 12 | Bg3 | What piece is on c3? | White Pawn | occupancy |
2r5/5pk1/3q2p1/p7/Pr5p/2NB1P1P/2Q3P1/2R2K2 b - - 0 38 | Rb3 | What piece is on c1? | White Rook | occupancy |
5b2/8/8/2p2kP1/p1P1N2p/3K3P/P7/8 w - - 1 142 | Nc3 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r6/6kp/3n4/p2P4/P1p1pr2/2N5/1P2R2P/2R4K w - - 3 39 | Rce1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
5r2/ppr1ppk1/3p2b1/2q1n3/3N4/2P5/PP1Q2PP/R3RB1K w - - 0 24 | Qg5 | What piece is on e3? | Empty | occupancy |
r5rk/1p5p/p2p4/1p1Pp1q1/6b1/2PPR3/PP1Q2PN/R5K1 w - - 2 25 | Rf1 | What piece is on a1? | White Rook | occupancy |
r1b2rk1/ppqn1ppp/3bpn2/3p4/3pP3/2PB1N2/PP1N1PPP/R1BQR1K1 w - - 0 10 | cxd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
6k1/8/4B1P1/8/5K2/8/8/6r1 b - - 10 63 | f5e6 | Is the White king in check? | No | check |
r6k/4N1bp/8/p1B3P1/5p2/6nR/P1P3K1/8 w - - 4 31 | Kf3 | Is the move from e7 to c8 legal? | Yes | legality |
r4r1k/p1p4p/1pPq1n2/2pPQPp1/4P1N1/P1P5/6P1/1R2K2R w K - 1 27 | Qxd6 | Does White have any passed pawns? | Yes: e4, f5 | structure |
rnbqkb1r/pp1p1ppp/4pn2/2pP4/2P5/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 4 | Bd6 | What is the material balance in this position? | Equal | material |
R2R2r1/1P2bp2/1k2n3/6p1/1p5p/5B1P/1Pp2PPB/6K1 b - - 0 37 | Rxd8 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/6b1/1k6/2pK3P/2P5/8/P4N2/8 b - - 8 157 | Ka5 | Is the move from c5 to h6 legal? | No | legality |
k1r5/pp3bpp/Nr6/1P3p2/2n2P1P/2R5/4PPBK/2R5 w - - 4 30 | Rd1 | Is the move from g2 to h3 legal? | Yes | legality |
2kr1b1r/pppqn1p1/1n2p2p/1P1bPp2/3P4/P2BBN2/2QN1PPP/R1R3K1 w - - 3 18 | a4 | Are there any open files in this position? | No | files |
r1bqkbnr/pp1ppp1p/2n3p1/2p5/8/5NP1/PPPPPPBP/RNBQ1RK1 b kq - 1 4 | Bg7 | Is the move from f8 to g7 legal? | Yes | legality |
2r3r1/p2Q2pp/1pp1pk2/2q2p2/2P1PP2/1P6/P5PK/3R1R2 w - - 2 22 | e5+ | Is the move from f1 to b4 legal? | No | legality |
r1b2k2/1pp2N1r/p1n3qp/6p1/PPBb4/5P2/4RP1P/R1BQ2K1 w - - 1 19 | b5 | Does Black have any isolated pawns? | No | structure |
r3r1k1/1b1n1pbp/1q2p1p1/2p1P3/p1Pp1PN1/1P5R/PBB1Q1PP/3R2K1 w - - 0 22 | Nf2 | Identify any Black knight outposts on the board. | e3 | outposts |
r5k1/pp3ppp/5p2/2b5/2P5/1PB2P2/P5PP/4R1K1 w - - 2 30 | e7c5 | Is the Black king in check? | No | check |
rn1qkb1r/1p3ppp/p2pbn2/4p3/4P1P1/2N4P/PPP1NP2/R1BQKB1R b KQkq - 0 8 | d5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
5k2/6p1/4Q2p/7P/6P1/p7/4K3/q7 w - - 6 50 | Qc8+ | What piece is on f2? | Empty | occupancy |
5k2/p1r1b2Q/1p1n4/4qp2/8/P5R1/5PPP/3R2K1 b - - 5 31 | Ke8 | What is the material balance in this position? | Equal | material |
r2r4/ppqb1k1p/3p1pp1/1P2pP2/4P3/1P4Q1/P5PP/1K1R1B1R w - - 1 18 | Bc4+ | Does Black have any isolated pawns? | No | structure |
rn2brk1/p4pbp/3q2p1/1ppP4/5B2/3N4/PP2PPPP/R2QKB1R b KQ - 3 14 | Qxd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqkb1r/5ppp/p1n1pn2/2p5/Pp1P4/1BN1PN2/1P3PPP/R1BQ1RK1 w kq - 0 10 | Ne2 | What piece is on b7? | Empty | occupancy |
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