fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1r2kb1r/3n1ppp/p1p1pn2/8/7N/2N1P3/PP2KPPP/R1BR4 b k - 3 16 | Bb4 | Is the Black king in check? | No | check |
r6r/3bkpp1/p1n1p3/1p1p2q1/4Pn2/PNN2B2/1PPQ1P2/1K1R3R w - - 0 19 | exd5 | What piece is on g7? | Black Pawn | occupancy |
r1bqkb1r/pp1p2pp/2n1p1n1/1N2Pp2/3Q4/5N2/PPP2PPP/R1B1KB1R w KQkq - 1 10 | Nd6+ | Does Black have any isolated pawns? | No | structure |
B1bq1rk1/3pNppp/1p2n3/p7/3Q4/1PP1P1P1/P4P1P/RNB2RK1 b - - 0 16 | f5e7 | Is the Black king in check? | Yes | check |
r2qkbnr/ppp4p/2n3p1/3p4/4p1b1/4P2N/PPPP2PP/RNBQK2R w KQkq - 0 9 | c8g4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r2q1rk1/pp2pp1p/6p1/n1pP2N1/4P2P/8/P2QbPP1/1R2K2R w K - 0 15 | Kxe2 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/ppp1ppbp/5np1/3p4/8/3P2P1/PPPBPPBP/RN1QK1NR w KQkq - 2 5 | Qc1 | Does Black have any passed pawns? | No | structure |
Q4b1r/p1pbkppp/5n2/4r3/3P4/6P1/PP3P1P/1RB3K1 w - - 0 19 | b5e5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/1pqbbp2/p2ppn1p/4n3/4PB2/1BN2N2/PPPQ2PP/4RRK1 b kq - 2 16 | O-O-O | What is the material balance in this position? | Equal | material |
r2qrbk1/1b1n2p1/p2p3p/1ppP1p2/Pn2P3/R4N1P/1P1N1PP1/1BBQR1K1 w - - 0 18 | Rae3 | What piece is on g8? | Black King | occupancy |
rnbq1b1r/ppp2kpp/5n2/8/2B5/8/PPPP1PPP/RNBQK1NR b KQ - 1 5 | f1c4 | Is the White king in check? | No | check |
r1b2knr/pp2pp1p/3p2p1/qBpPb3/4P3/2N1B3/PPPQ1PPP/R3K2R w KQ - 2 10 | Bd3 | Is the move from e3 to h6 legal? | Yes | legality |
Nn3b1r/pp1bkp2/4p2p/2q5/8/P1P5/1P2QPPP/R3KB1R b KQ - 0 15 | Bg7 | What is the material balance in this position? | White is up 3 pawns of material | material |
2kr2nr/pppqbpp1/2n1b3/4P2p/Q1Pp4/1N3NP1/PP2PPBP/R1B1K2R w KQ - 2 10 | Ng5 | Identify any Black knight outposts on the board. | None | outposts |
2r2rk1/1p1q2bp/3p2p1/1N1Pp3/P3Bn2/5PP1/3Q3P/2R2RK1 b - - 0 26 | Nh3+ | Does White have any isolated pawns? | Yes: a4, d5 | structure |
8/5p1k/2pBpP1p/ppPpP3/3P4/P1P1QP1p/3R2rK/5q2 w - - 5 38 | g8g2 | Is the White king in check? | Yes | check |
5rk1/2q2ppp/2p1bnn1/4p3/QP2P3/4BN1P/5PP1/4RBK1 b - - 0 21 | Nxe4 | Does White have any passed pawns? | No | structure |
2k5/K7/8/8/P7/8/8/8 b - - 4 90 | Kc7 | What is the material balance in this position? | White is up 1 pawn of material | material |
3r3K/1P5P/N3nk2/8/8/8/6R1/8 w - - 1 2 | Rg8 | What piece is on f6? | Black King | occupancy |
8/1R3K2/6P1/4b3/8/2n5/2k5/8 w - - 29 90 | Rb6 | Are there any open files in this position? | Yes: a, b, c, d, e, f, h | files |
2r3k1/1p1b2p1/1r6/p4pq1/1bPNp2p/4P3/KQBNR1PP/3R4 w - - 6 33 | c5 | Is the move from d4 to d7 legal? | No | legality |
3r2k1/1p4rp/pqp1p1pQ/4Pp1P/3P4/3R2R1/1P3PP1/6K1 b - - 0 35 | Kf7 | Is the White king in check? | No | check |
2r2rk1/p5b1/2Bpq1pp/4pn2/Q1P5/8/PB2RPPP/R5K1 b - - 0 22 | Kh7 | Is the move from h6 to h5 legal? | Yes | legality |
5k2/8/4KP1p/8/P7/7P/3bB3/8 w - - 1 58 | f7 | Identify any White knight outposts on the board. | b5 | outposts |
r3rnk1/1p3pp1/2Pq2p1/3p4/3P4/2N1P3/2Q2PPP/1R3RK1 b - - 0 20 | bxc6 | Are there any open files in this position? | Yes: a | files |
r1bqk2r/p4ppp/2p2n2/3p4/8/BPbBP3/P2N1PPP/2RQK2R b Kkq - 1 12 | Qa5 | Is the move from c3 to f4 legal? | No | legality |
r2k3r/pp1nB1pp/2p5/3n4/8/5P2/PPP2P1P/2KR1B1R b - - 0 14 | g5e7 | Is the Black king in check? | Yes | check |
r1bqkb1r/1p1p1ppp/p1n2n2/4p3/2P1P3/2N5/PPN2PPP/R1BQKB1R b KQkq - 3 7 | Bc5 | Is the move from f8 to f1 legal? | No | legality |
4q1kr/p6p/1p2P1pB/4p3/2r1P3/1BP5/PP5P/5RK1 b - - 5 27 | b5 | Is the move from h7 to f8 legal? | No | legality |
r7/8/8/p1R2kpp/8/1P2K1PP/P7/8 b - - 1 45 | c6c5 | Is the Black king in check? | Yes | check |
1rbq1rk1/1p5p/p1pp2N1/2n2N2/P1P5/1P4P1/3Q1PBP/b3R1K1 w - - 1 22 | Bd5+ | Is the move from g2 to h3 legal? | Yes | legality |
2k5/ppp3pb/6p1/3Pn1q1/4p3/2P5/PP1R4/2K5 w - - 4 28 | c6e5 | What is the material balance in this position? | Black is up 12 pawns of material | material |
r6k/4N1b1/8/1NpPnp2/2P1p3/P3P3/3KQP1q/1R6 w - - 4 39 | Kc3 | What piece is on d2? | White King | occupancy |
3Q4/1p3r1k/p6p/3pnp1r/PP1Np3/2P1P1P1/7P/4R2K w - - 6 37 | Qxd5 | Are there any open files in this position? | No | files |
r4rk1/pp3ppp/3b1q2/3B4/4P3/1P4Pb/P1Q2P1P/R1BR2K1 b - - 2 17 | Be5 | Is the Black king in check? | No | check |
r1b2rk1/ppp3pp/3pp3/6N1/2PR1B2/6P1/PP3PBP/6K1 b - - 0 16 | h6 | Is the move from h7 to h5 legal? | Yes | legality |
1r1r2k1/2q1bppp/4p3/pp2P3/2p1QP2/P1P3P1/1PN3P1/3RRK2 w - - 0 26 | Ke2 | Is the move from a3 to g7 legal? | No | legality |
5N1r/r2bk2p/5ppR/pp2p3/4P1B1/2P5/PP3PP1/2KR4 b - - 2 26 | Bxg4 | Does Black have any passed pawns? | No | structure |
1rbqk2r/ppp2ppp/2n1p3/8/3Pn1Q1/B4NP1/p3PPBP/R4RK1 b k - 3 12 | Nf6 | What piece is on f3? | White Knight | occupancy |
R7/2k5/3r4/2K5/3P4/8/8/8 w - - 0 6 | Ra7+ | Does White have any isolated pawns? | Yes: d4 | structure |
rn1qk2r/1b2bppp/pp1ppn2/8/2PNPP2/2NB4/PP4PP/R1BQ1RK1 w kq - 1 10 | Be3 | Are there any open files in this position? | No | files |
4r1k1/pp5p/2p1Np2/3p1P2/3P2P1/2P4P/P1n1R3/6K1 b - - 1 33 | Na3 | Identify any White knight outposts on the board. | f5, h5 | outposts |
8/6k1/2pp2p1/4p1N1/3nPP1K/4R1P1/5nB1/6r1 w - - 12 52 | Bf3 | What piece is on e5? | Black Pawn | occupancy |
r1b1q1k1/1p5p/3p1Q2/p4pB1/2p5/8/1P4PP/5RK1 w - - 1 30 | Bh6 | Identify any Black knight outposts on the board. | b3, b4, d3, e4, e5 | outposts |
8/R4p2/2p2kp1/3pNn1p/3P1P2/4P3/3r1PKP/8 b - - 21 40 | Nxe3+ | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r1bqk2r/pppp1pp1/1bn2n1p/4p3/1PB1P3/2PP1N2/P4PPP/RNBQK2R w KQkq - 1 7 | a4 | Is the move from b4 to c2 legal? | No | legality |
r2qkb1r/pppn1Bpp/3p1n2/4p3/3PP3/1Q6/PPP2PPP/RNB1K2R b KQkq - 0 7 | Ke7 | Is the Black king in check? | Yes | check |
rn4k1/pN4pp/2p5/3p4/2P4P/1PK1P1b1/PB1P1n2/RN1b1B2 b - - 2 17 | Nd7 | Identify any White knight outposts on the board. | a4 | outposts |
8/5p2/8/4k1p1/p1p1ppP1/2P1K2P/PP6/8 w - - 0 47 | f5f4 | Is the White king in check? | Yes | check |
r6r/4nk2/bpn1p2p/q2pPp1P/P4Pp1/2P1Q3/2P1NKP1/R1B2B1R w - - 4 18 | Bd2 | What piece is on f2? | White King | occupancy |
2r3k1/1q1p1pp1/4p2p/rp2P3/n7/b1P2N2/1P2QPPP/R2R2K1 w - - 0 21 | Rxa3 | Is the move from b2 to c7 legal? | No | legality |
2r1r1k1/1b3pbp/pq1p1np1/1p1P4/1Pn1P1P1/1QNR3P/4NPB1/1RB3K1 b - - 0 19 | Nd7 | Identify any White knight outposts on the board. | d5 | outposts |
5rk1/pp1p2B1/4p3/8/1n1p1P2/8/PP4PP/5RK1 b - - 0 28 | Kxg7 | What piece is on e7? | Empty | occupancy |
2k4r/p1p2p1p/8/2K3p1/2p1N1b1/2qP4/P4P1P/4R2R b - - 1 28 | g3e4 | What is the material balance in this position? | Black is up 6 pawns of material | material |
5k2/2p4R/p5P1/1P1p1p2/3P1P1K/2r5/8/8 b - - 0 38 | axb5 | Does White have any isolated pawns? | Yes: b5, d4 | structure |
r1b1k2r/1pb1qpp1/2n1p2p/p7/2PpN3/P2P1NP1/1P3PBP/R2Q1RK1 w kq - 2 14 | c5 | Is the move from e4 to f1 legal? | No | legality |
r1bqk1nr/ppp2ppp/2n1p3/8/3pN3/5N2/PPPb1PPP/R2QKB1R w KQkq - 0 8 | b4d2 | Is the White king in check? | Yes | check |
r1bq1b1r/pppk4/2np4/4pQpB/4Pp2/3P3P/PPP2PPN/RNB2RK1 b - - 0 11 | g4f5 | Is the Black king in check? | Yes | check |
r1bqk2r/pp1n1ppp/2pbp3/8/2PPQ3/5N2/PP3PPP/R1B1KB1R b KQkq - 0 9 | e5 | Identify any Black knight outposts on the board. | None | outposts |
rnb1k2r/1p2b1pp/p2ppn2/6B1/3NP3/q1NQ4/P1P1B1PP/1R2K2R b Kkq - 1 12 | Qa5 | Identify any White knight outposts on the board. | None | outposts |
r1b1qb1r/pppk3p/4p3/3pP3/1n3p2/3B4/PPPNQ1PP/R1B1K2R w KQ - 4 14 | O-O | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1k2r/1p2b1pp/p3pq2/3p4/5PR1/2N5/PPPQB2P/2KR4 w kq - 0 19 | f5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2r2k1/1p1n2pp/2pBp3/p2n4/P1NP4/2P2P2/6PP/R1R3K1 b - - 2 22 | b5 | What is the material balance in this position? | Equal | material |
r2qkb1r/pb1n1ppp/2p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQK2R w KQkq - 2 9 | O-O | Is the move from d1 to b6 legal? | No | legality |
r2qk2r/pppb1ppp/3b4/3p4/3Pn3/3B4/PPP2PPP/RNBQ1RK1 w kq - 2 8 | Nc3 | What piece is on e8? | Black King | occupancy |
r2qkbnr/pp1npppb/2p4p/7P/3P4/5NN1/PPP2PP1/R1BQKB1R w KQkq - 1 9 | Bd3 | Is the Black king in check? | No | check |
5rnk/1p5p/3p3r/p1p1p1b1/2P1PpK1/5P2/PP1QNB2/5R2 w - - 0 44 | Kxg5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/6p1/4kN1p/7P/5P2/5K2/8/8 b - - 0 56 | Kxf6 | Identify any White knight outposts on the board. | e5 | outposts |
r2qk3/5p1p/p6b/1N2pP1Q/3n4/3BN3/bPP2r1P/2KR3R w q - 1 19 | Qxh6 | Identify any White knight outposts on the board. | None | outposts |
8/8/8/k7/8/5K2/7p/8 w - - 0 8 | Kg2 | Is the move from f3 to e4 legal? | Yes | legality |
r7/6p1/7p/8/8/p1k3P1/2R2P1P/2K5 b - - 5 10 | Kb3 | What piece is on c6? | Empty | occupancy |
rnbq1rk1/p5pp/8/1p1nPp2/2p5/2P2N2/P1B3PP/R1BQ1RK1 w - - 0 16 | Qd2 | What piece is on c4? | Black Pawn | occupancy |
1r1q1bk1/1r1b2p1/n2p1pNp/p1pPp1nP/P1P1P3/2B3R1/3NQPP1/R2B2K1 b - - 10 33 | f5 | Is the Black king in check? | No | check |
1r2r1k1/7p/pp1p2p1/2pP3n/P2bPp2/3B1b2/RPQB2RP/7K b - - 1 30 | Re5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/3nppbp/b2p2p1/2pP4/4P1n1/2N2NP1/PP3PBP/R1BQR1K1 b - - 0 12 | Nge5 | What piece is on f2? | White Pawn | occupancy |
6k1/8/p2p1rbQ/3P4/5P2/7P/3n1K2/8 w - - 1 46 | Ke3 | Is the move from f2 to e1 legal? | Yes | legality |
7r/1b2kppp/pq2pn2/4N3/Pp1r4/3B3P/1P3PP1/2RRQ1K1 w - - 0 24 | Nc4 | Is the move from a4 to d1 legal? | No | legality |
2k4r/ppp2p2/3N2p1/3n4/P2P4/1P3P1p/K1R4Q/4q3 b - - 7 37 | c4d6 | Is the White king in check? | No | check |
r2qk1nr/p5pp/2pP1p2/8/6b1/2N2N2/PPP1QPPP/R1B1K2R b KQkq - 1 11 | d1e2 | Is the Black king in check? | Yes | check |
r1b1k2r/2qn1ppp/p2ppn2/1Bb5/3NPP2/P1N1B2P/1PP3P1/R2Q1R1K b kq - 0 13 | axb5 | Does Black have any passed pawns? | No | structure |
r2r2k1/1pqb1ppp/4pn2/2P5/p7/1N3B2/PP1BQPPb/2R1R2K w - - 2 21 | Ba5 | What piece is on e6? | Black Pawn | occupancy |
8/1p1R1k2/p1p3pK/4r3/7p/8/8/8 b - - 1 43 | d6d7 | Is the Black king in check? | Yes | check |
r1b2bk1/ppr1q3/2n1p2p/3pP2Q/5pPp/P1PB1N2/2P2P2/R1B1R2K w - - 0 23 | g5 | Identify any Black knight outposts on the board. | c4 | outposts |
8/8/4p3/2q1kbB1/8/8/K2P4/7Q w - - 4 3 | d4+ | What is the material balance in this position? | Equal | material |
rnbq1rk1/ppppb1pp/4p1p1/4P3/3P4/6P1/PPP4P/RNBQK1NR w KQ - 0 9 | f7g6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rr4k1/2n4p/1B2p1p1/N1P2p2/P7/1P3P2/5NPb/1R3K2 w - - 1 33 | Nc4 | Identify any White knight outposts on the board. | a4, b5, b6, c4 | outposts |
2kr3r/pppb2pp/5q2/5p2/4p3/8/PPP3PP/R1BQRBK1 b - - 1 15 | f4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqk2r/bpp2ppp/2np1n2/p3p3/2B1P3/N1PP1N2/PP3PPP/R1BQR1K1 b kq - 3 8 | h6 | Is the f-file open, semi-open, or closed? | closed | files |
r1bq1r1k/p3n1bp/1n4p1/3ppp2/4P3/1PNNBP2/P2QB1PP/R4RK1 w - - 0 17 | Bc5 | Is the move from d2 to h4 legal? | No | legality |
2r1rnk1/2q1bppp/bp2p3/pn1pP1N1/3P1N1P/P3B1P1/1P3PB1/R2QR1K1 w - - 11 20 | Bf1 | What piece is on e1? | White Rook | occupancy |
8/ppk4p/2pQ4/4P3/8/4p1P1/PPP4q/4K3 b - - 5 32 | Kc8 | Is the move from c6 to d2 legal? | No | legality |
r1b1rbk1/q4p1p/2p3p1/p1p1p2n/N1P1P3/4QNPP/PP3PB1/1R2R1K1 w - - 6 19 | h4 | Does Black have any isolated pawns? | Yes: a5, c5, c6 | structure |
3r1bk1/p4p1p/6p1/3p4/4N3/KP6/P5PP/3R4 w - - 2 30 | g7f8 | Is the White king in check? | Yes | check |
r2q2kr/1p3pp1/3Nb2p/2PpN3/8/p2P4/P3QPPP/1R4K1 w - - 4 20 | d4 | Does Black have any isolated pawns? | Yes: d5 | structure |
r4r1k/pp4b1/3p3p/1P2p3/1Q2P2q/3PB1n1/P1NR1RK1/8 b - - 0 27 | Nh1 | Is the Black king in check? | No | check |
rnbqkb1r/ppp2ppp/8/8/1n2BP2/5Q2/PPPN2PP/R1B1K1NR b KQkq - 3 8 | f5 | What piece is on b8? | Black Knight | occupancy |
rnbqkbnr/ppp2ppp/8/4p3/3Pp3/2N1B3/PPP2PPP/R2QKBNR b KQkq - 1 4 | exd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/3b1B2/4p2k/p2pP3/1p1P3P/8/K7/8 w - - 6 4 | Kb3 | Does White have any passed pawns? | Yes: h4 | structure |
1k2r3/2p2p2/1p4bp/1Q1P2p1/1KR2r2/1PR4P/P2q2P1/5B2 b - - 1 37 | Re3 | What piece is on h3? | White Pawn | occupancy |
3k3r/p3Pp2/q7/2p1n1B1/1pp5/2N3P1/PP3PbP/1R2R1K1 b - - 0 21 | Ke8 | What piece is on e1? | White Rook | occupancy |
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