fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkbnr/ppp2ppp/3p4/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4 | a6 | What is the material balance in this position? | Equal | material |
1r3rk1/7p/b3pNq1/2p1b1P1/4P3/2N1p3/PP4Q1/2K3RR b - - 1 25 | Bxf6 | Is the Black king in check? | Yes | check |
r1bqk2r/ppnpp2p/5Ppb/1Np3N1/8/5Q2/PPPP1PPP/R1B1K2R w KQkq - 1 11 | d4 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/ppp3bp/2np2q1/8/2NPbBpP/1QPN2n1/PP5R/R4BK1 b - - 1 17 | d5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3R4/2K5/8/1pk5/8/8/8/8 b - - 0 90 | b4 | Identify any White knight outposts on the board. | None | outposts |
r1bqkb1r/pp3ppp/2n2n2/2Pp4/8/1B6/PPP2PPP/RNBQK1NR w KQkq - 1 7 | b8c6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qkb1r/1p1bnppp/p3p3/3pP2Q/8/2NP1N2/PP3PPP/R1B2RK1 w kq - 1 11 | Ne2 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/pp3ppp/2npbb2/2pNp3/2B1P3/3P1N2/PPPQ1PPP/R3K2R b KQ - 3 10 | a6 | Are there any open files in this position? | No | files |
8/5b2/6pB/7p/7P/K1p5/8/3k4 w - - 4 84 | Bg5 | Are there any open files in this position? | Yes: a, b, d, e, f | files |
rn1q1rk1/1p2bppp/p2pbn2/4p1P1/4P3/1NN1B3/PPP1BP1P/R2QK2R b KQ - 0 10 | Nfd7 | Is the move from e6 to d5 legal? | Yes | legality |
q5k1/4bppp/8/1p2P3/2p3Q1/2P2r1P/1P3P2/1N2R1K1 b - - 1 25 | Bc5 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r2qkb1r/pppb2pp/8/3p1p2/3Pn3/3B4/PPPN1PPP/R1BQ1RK1 b kq - 1 8 | Qf6 | Is the move from e8 to a7 legal? | No | legality |
r1b1k2r/pp1pqppp/2p2n2/6B1/2BbP3/1QN5/P4PPP/3R1RK1 b kq - 1 13 | Qe5 | Does Black have any passed pawns? | Yes: c6 | structure |
1r3k1r/2qnnpbp/2Bp2p1/pb1Pp3/P1p1N3/5Q2/1P3PPP/R1B1K2R w KQ - 0 18 | axb5 | Does Black have any passed pawns? | No | structure |
rnbqkbnr/pp2pppp/3p4/8/3p4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 0 4 | c5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1r3k1/4qpb1/2p1n1p1/2P1p2n/pP1pP2P/P4N1P/2QB1PB1/1RR3K1 b - - 7 33 | Nef4 | Identify any Black knight outposts on the board. | c3, h5 | outposts |
8/8/8/6P1/2n5/2kn4/K7/8 w - - 6 90 | g6 | Is the move from g5 to h7 legal? | No | legality |
r1b2rk1/2qn1p1p/2n1p1p1/1B1pP2N/pp3P2/3RB1Q1/PPP3PP/1K5R b - - 3 21 | Rb8 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/p1p1np2/1pn1b2Q/3pP3/3P4/2PB1N2/P1P3PP/1R3RK1 b - - 0 14 | Ng6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1r2k2/1b3ppB/ppq1pb2/2ppB3/5P2/1P2P3/P1PPQ1PP/R4RK1 w - - 1 17 | Qg4 | Is the move from c2 to b2 legal? | No | legality |
r7/1p1r3p/3ppk2/p1n2p2/P1P2P2/1PN2bP1/2BR1K1P/4R3 b - - 7 29 | Bh5 | Are there any open files in this position? | No | files |
5rr1/1p1PQ3/p6k/2P5/P7/1P3p2/2P4P/5K2 w - - 3 38 | Qh4+ | Are there any open files in this position? | Yes: e, g | files |
3b4/5k1p/R4pn1/p2p4/Pp1P3P/6B1/1P3PP1/2r1NK2 b - - 2 34 | Rb1 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
5r2/8/1Q4k1/7p/8/P1K2P1P/1P3P2/8 b - - 1 37 | a7b6 | Is the Black king in check? | Yes | check |
r1bqr1k1/pppnppbp/3p2p1/7n/2PP1B2/2N1PNPP/PP3P2/R2QKB1R w KQ - 1 9 | Bd3 | Is the move from g3 to g4 legal? | Yes | legality |
3qr1k1/2p2p2/1p1pb1p1/r6p/p1PQPP2/P1R3PP/1P3RB1/6K1 b - - 0 21 | Rc5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/2b5/2k1r3/5R2/5p2/6P1/5P1P/5K2 b - - 2 42 | fxg3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3r1k1/1b1n1pb1/pqpp2pp/1P5n/2PpP3/1P1B1NPP/1BQN1P2/R3R1K1 b - - 0 21 | axb5 | What piece is on h2? | Empty | occupancy |
4rrk1/6p1/p1pp4/7R/3NPpp1/2Pn4/P5P1/2K3R1 w - - 0 25 | e5d3 | Is the Black king in check? | No | check |
r2q2rk/p1p2p2/2ppb3/3nP3/3NQb2/8/PPP2P2/RN1R2K1 w - - 2 18 | g5f4 | Is the White king in check? | Yes | check |
r1bqkbnr/pppp1ppp/2n5/8/4Pp2/5N2/PPPP2PP/RNBQKB1R w KQkq - 2 4 | d4 | Is the move from b1 to a3 legal? | Yes | legality |
rn1r2k1/p1bq2pp/1p3p2/1Q1p2B1/P2P4/2P2NP1/5P1P/R3R1K1 w - - 0 19 | Bc1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b2k1r/3q2p1/p1pB1nBp/1p1p4/3P4/P1N5/1PP2PPP/R2QK2R b KQ - 0 14 | f4d6 | Is the Black king in check? | Yes | check |
5k2/3n1ppp/r1b5/3p4/PP6/5P2/4R1PP/R5K1 w - - 0 26 | Rc1 | What piece is on h7? | Black Pawn | occupancy |
r2r2k1/4bppp/8/p1P5/1P1Bp3/P5P1/5P1P/R4BK1 w - - 1 24 | Bc3 | Does White have any passed pawns? | Yes: c5 | structure |
6k1/ppq1bppn/1np4p/4p3/P3P1b1/1BN1BN2/1PP1QPPP/3r2K1 w - - 0 17 | Qxd1 | Identify any Black knight outposts on the board. | None | outposts |
r3r1k1/3q1pp1/1pp2n1p/p2p1NnP/3P1NP1/Q3PP2/PP3K2/2R4R w - - 0 24 | Rc2 | Are there any open files in this position? | No | files |
2K5/8/1kBB4/1p6/1P6/8/1r6/8 w - - 83 92 | Be4 | Are there any open files in this position? | Yes: a, c, d, e, f, g, h | files |
rn1q1rk1/pb2bp2/2p1p1p1/1p2P1P1/2pP1PQ1/2P5/P5P1/RBB2K1R b - - 2 16 | Kg7 | Does White have any isolated pawns? | Yes: a2 | structure |
r3r1k1/p3ppbp/1pq3p1/8/P1PPpPn1/1N2P3/1B4PP/1R2QRK1 w - - 0 21 | Qe2 | Are there any open files in this position? | No | files |
4b3/1p2kp1N/pn1rp2p/5P2/Pq1r4/3B4/4Q1PP/2R2RK1 w - - 0 26 | Qe5 | Does Black have any isolated pawns? | Yes: h6 | structure |
r1bqr1k1/1p1n2pp/p1pn4/3N1p2/3P4/3BPN2/PPQ2PPP/2R2RK1 w - - 0 15 | Nf4 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2qkb1r/1b1n1pp1/pP3n1p/3pp3/N2NP3/1P2BP2/2PQ2PP/2KR1B1R w kq - 1 17 | Ne2 | What piece is on b8? | Empty | occupancy |
2R5/3R1pk1/4pp2/1p5p/p4N1P/b3P1P1/5P1K/1q6 w - - 6 38 | Rdd8 | Does White have any isolated pawns? | No | structure |
6k1/p2p1rnp/1p1Pp2q/8/1PPQ3P/8/PB3P1K/6R1 b - - 0 35 | e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
1q2rnk1/1bp2p1p/1p2pnp1/1P1pN3/3P4/4P3/1QPNBPPP/R5K1 w - - 0 19 | Ndf3 | Identify any White knight outposts on the board. | None | outposts |
rnbq1rk1/p3b1pp/4Pp2/2pp1N2/8/8/PPQN1PPP/R1B1R1K1 b - - 1 15 | Nc6 | Is the move from g8 to c7 legal? | No | legality |
8/6pk/3P1p1p/p3rq2/P1P4R/6Pb/3r1P2/1Q3RK1 w - - 0 37 | Rxh3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3k2r/ppp1b1pp/2n3n1/4p2q/2PpN3/3N2P1/PP2PPbP/R1BQ1RK1 w kq - 0 15 | Kxg2 | Is the move from h2 to h4 legal? | Yes | legality |
rnb1k1nr/pp4pp/3Npq2/2P2p2/1P6/P2B1N2/2P2PPP/R2QK2R b KQkq - 3 14 | e4d6 | Is the Black king in check? | Yes | check |
2r5/4b1pk/4p2p/qp1nPp2/3P3P/P1p2QP1/2R2P2/2BR2K1 w - - 0 35 | g4 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r1r1k1/p1pbqp2/1p2pn1Q/8/3P4/3B4/PPP2PPP/R3R1K1 b - - 0 18 | Qf8 | Is the White king in check? | No | check |
r3k2r/p1qnbppp/2p1b3/2P1P3/3pP3/1N1B3P/PP4P1/R1BQ1RK1 w kq - 1 15 | Bf4 | What piece is on e4? | White Pawn | occupancy |
r1bqr1k1/p3np1p/4p1pB/2bp4/8/3B4/PPP1QPPP/RN3R1K w - - 2 5 | Qe5 | Identify any White knight outposts on the board. | None | outposts |
8/p4p2/3kp2p/1p6/2pb1n1P/5P2/PP3P2/1R1R2K1 b - - 1 27 | e5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r2q1nk1/1b2rppp/p7/1p2N3/2pPpP2/4PQ2/PP2N1PP/2R1R1K1 w - - 0 19 | Qg3 | Is the move from g1 to d3 legal? | No | legality |
r6k/p2pQ1pp/P5b1/6N1/2q5/4K3/Pp3PPP/1R5R b - - 1 23 | Re8 | Is the move from c4 to h4 legal? | Yes | legality |
3R4/5pbk/1q4p1/4p1P1/r3Q3/1P6/rBP4P/1K1R4 w - - 7 40 | c4 | Does White have any passed pawns? | Yes: b3, c2 | structure |
6k1/1p3p2/6p1/2r5/KR6/2qPQ3/8/4R3 b - - 2 37 | b6 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
3r2rk/3q1pp1/2pPp2p/ppB4P/1Pn2PQ1/P1P5/6P1/R2R3K b - - 4 33 | a4 | Are there any open files in this position? | No | files |
8/1p1r4/8/8/p1PN4/P3p3/1PK5/4k3 w - - 0 52 | Nb5 | Does Black have any isolated pawns? | Yes: e3 | structure |
rnbqkbnr/pp2pppp/2p5/3pP3/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 3 | c5 | What is the material balance in this position? | Equal | material |
r1b1k1r1/ppq1np1Q/2n1p3/3pP3/3p1P2/P1P5/2P1N1PP/R1B1KB1R b KQq - 0 11 | dxc3 | Identify any Black knight outposts on the board. | c3, c4, e3 | outposts |
r1bqkb1r/pppp1p2/2n2n1p/4P1p1/8/2p3B1/PP3PPP/RN1QKBNR w KQkq - 0 8 | exf6 | Are there any open files in this position? | No | files |
8/8/5p2/6Pp/3kp3/6P1/4KP2/8 b - - 0 57 | fxg5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
5R2/6pr/8/5K2/8/5k2/8/8 w - - 0 8 | Kg6+ | Are there any open files in this position? | Yes: a, b, c, d, e, f, h | files |
rnbq1rk1/1p2npbp/p2p2p1/2pP4/P3P3/2NB1N1P/1P3PP1/R1BQK2R b KQ - 2 10 | f5 | What piece is on h5? | Empty | occupancy |
5k2/2b4Q/6p1/3q4/8/5P2/5PKP/B7 b - - 0 45 | Qg5+ | Is the move from d5 to a2 legal? | Yes | legality |
5rk1/2q1bppp/3p4/pr2p3/R1N1P3/1PP5/2Q2PPP/R5K1 b - - 4 22 | Rfb8 | What piece is on b3? | White Pawn | occupancy |
8/1p1k3P/3P4/4K3/8/4P3/4n3/q7 w - - 0 51 | a2a1q | Identify any White knight outposts on the board. | d4, f4 | outposts |
7r/4Qk2/3p1n2/3PpN1p/4Pp2/3P4/PPr1BPq1/R3K2R b KQ - 0 24 | b7e7 | Is the Black king in check? | Yes | check |
8/8/8/kp3P2/7p/2r5/3RK1PP/8 w - - 0 50 | b6a5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2kr1b1r/pp3ppp/8/2p5/4qB1n/P5PP/BP3PK1/R6R w - - 7 24 | f3h4 | Is the White king in check? | Yes | check |
Qn3bnr/4q1pp/pp1p1p2/8/3pPB1k/2N3P1/PPP1BP1P/R3K2R b KQ - 0 15 | g2g3 | Is the Black king in check? | Yes | check |
8/1p1k2p1/3P4/4K1P1/p6P/4P3/4n3/8 w - - 0 47 | a5a4 | Identify any White knight outposts on the board. | d4, g5 | outposts |
r2qkb1r/1p1npppp/p1p2nb1/2Pp4/3P1B1N/2N5/PP2PPPP/R2QKB1R w KQkq - 5 8 | e3 | Is the White king in check? | No | check |
r1b2rk1/pp1n1ppp/4pn2/3q4/1b6/1P1B1N2/P1PNQPPP/R1B1K2R w KQ - 1 10 | c4 | What is the material balance in this position? | Equal | material |
r5rk/pppq1ppn/3p3p/3PpN1P/4P2P/4QP2/PPP3R1/2KR4 b - - 4 22 | Nf6 | Does White have any isolated pawns? | Yes: h4, h5 | structure |
rn2k2r/1bq2ppp/p2ppb2/1p6/3NP3/1BN2Q2/PPP2PPP/2KR3R w kq - 2 12 | Ndxb5 | What is the material balance in this position? | Equal | material |
r2qkb1r/1p1n1ppp/p3b3/2p1N3/Q1P5/8/PP3PPP/RNB2RK1 w kq - 0 14 | Rd1 | What is the material balance in this position? | Equal | material |
1rqr4/p4pk1/1p5p/2pn4/8/P5P1/1PQ1PPBP/3R2K1 w - - 0 24 | Bxd5 | Identify any White knight outposts on the board. | f4, h4 | outposts |
6k1/1p2r2n/3p1qpp/pPpP1p2/1nP2P2/2Q2N1P/1P4P1/1B3R1K b - - 2 40 | b6 | What piece is on d6? | Black Pawn | occupancy |
r2q1rk1/pp2bppp/2n1pn2/3p4/3P1Bb1/2PB1N2/PP1N1PPP/R2QR1K1 b - - 5 10 | Nh5 | Does White have any isolated pawns? | No | structure |
r1b1k2r/pp2bp1p/1n2p3/4P3/3n2p1/P2B4/1P3PPP/RNB1NRK1 w kq - 0 15 | Nc3 | What piece is on e5? | White Pawn | occupancy |
r1b1qr1k/pp2b1pp/4p1n1/2p1P3/2Pp1P1P/3B1N2/PPQ3P1/R1B2RK1 w - - 1 18 | g3 | Identify any Black knight outposts on the board. | e3 | outposts |
6r1/Q1pk3p/1p1p3b/2n1pP1b/6p1/3P2BP/PPP2PP1/R4RK1 w - - 0 20 | g5g4 | What is the material balance in this position? | White is up 10 pawns of material | material |
4r3/ppp3pp/4nk2/5P2/6P1/2P5/P1PK3P/4R3 w - - 0 24 | Rxe6+ | Are there any open files in this position? | Yes: d, e | files |
6k1/p1pp1rpp/1p1b4/6q1/2PpP3/5P1P/PP3Q2/3R1K1R b - - 4 25 | c5 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r3k2/p4p1p/1p2b1p1/3B4/2PQ4/8/PP1K1P1q/4R3 w - - 3 22 | Rxe6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r5k1/pp3p2/2q3rp/4Q3/3p4/1B1P3P/PPP2P1K/2R2R2 w - - 0 23 | Rg1 | Is the move from b2 to b6 legal? | No | legality |
rnbqkb1r/pp3ppp/2p1pn2/3p4/2PP4/2N2NP1/PP2PP1P/R1BQKB1R b KQkq - 0 5 | dxc4 | Is the b-file open, semi-open, or closed? | closed | files |
7k/p2Q3p/2P3p1/8/2K3P1/8/P4R2/2q5 w - - 13 40 | Kd5 | Is the move from c4 to b4 legal? | Yes | legality |
r3k2r/4qp1p/p1R1bp2/1p2p3/4P2P/Q4R2/P3BPP1/5K2 w kq - 4 22 | Bxb5 | What piece is on h7? | Black Pawn | occupancy |
8/8/5p2/4k1p1/2K4p/3B1P1P/b5P1/8 w - - 3 67 | Kc5 | Does Black have any isolated pawns? | No | structure |
1r5k/p3R1p1/1p3n2/5QNp/8/q4P2/5P1P/6K1 w - - 2 27 | Rf7 | Does Black have any passed pawns? | Yes: a7, b6 | structure |
8/5p2/3b1pk1/7p/7P/p2qP1P1/R1N2P1K/R7 b - - 19 53 | Be5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
r4r1k/2p1q1bp/2P2np1/3P3n/1PN1p3/2N3Pb/2Q1BR1P/1RB3K1 b - - 1 25 | Ng4 | What is the material balance in this position? | White is up 1 pawn of material | material |
6r1/1p5R/3kp2p/3p4/8/4KP2/3P3q/3Q4 b - - 5 56 | Qe5+ | What piece is on h6? | Black Pawn | occupancy |
rn1br1k1/ppp4p/4b1p1/5p2/2P2P2/2N5/PP2BNPP/2KR3R w - - 0 18 | Rhe1 | Is the White king in check? | No | check |
r1bqk1nr/pp3p1p/2n1p1p1/2ppP3/3P2Q1/P1P5/2P2PPP/R1B1KBNR w KQkq - 0 8 | h4 | What piece is on h5? | Empty | occupancy |
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