fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bq1r2/pp2npp1/4p1k1/3pP1N1/1b1n2QP/2N5/PP3PP1/R1B1K2R b KQ - 0 1 | f5 | Is the White king in check? | No | check |
5rk1/p1Q2pbp/3p2pq/3P1b2/8/PP3N2/KP1R2PP/4R3 b - - 0 25 | Bg4 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
6k1/pb4pp/6r1/3p4/2p2BPQ/3q2K1/P6P/8 w - - 7 36 | c2d3 | Is the White king in check? | Yes | check |
r2qkb1r/pp3ppp/2b1p3/3nN3/2NQ4/2P5/PP3PPP/R1B1K2R b KQkq - 0 11 | Bb5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
3rk3/pp3pb1/2p3p1/6P1/4P3/5n2/1PR1KB1r/5BR1 w - - 0 29 | Kxf3 | Identify any Black knight outposts on the board. | b5 | outposts |
r2q1rk1/1b4pp/p7/1pp2pb1/1n3B2/1P1P1N1P/1PP2PP1/R2QR1K1 w - - 0 18 | Bxg5 | What piece is on h2? | Empty | occupancy |
2r3k1/1p6/4qp1Q/pP1p4/8/P1P2R2/1K2N1PP/8 w - - 3 35 | Rg3+ | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
2r2rk1/3qbppp/2n1p3/p2p4/2pPPN2/P1N3P1/1PQ2P1P/2RR2K1 b - - 0 23 | e5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r1bqkbnr/ppp2pp1/2np3p/4p3/2B1P3/5N1P/PPPP1PP1/RNBQK2R w KQkq - 0 5 | c3 | Does White have any passed pawns? | No | structure |
3rb3/pB2kppp/4pn2/q7/2P2Q2/1P3NP1/P3rPKP/R6R b - - 4 22 | Qb6 | Is the move from a7 to f6 legal? | No | legality |
r4k2/1pp1n1p1/p2b3q/5Pp1/3PN1n1/1BP3Pr/PP4QP/R1BK3R w - - 7 20 | Nxg5 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1bq1rk1/pp2ppbp/2np1np1/8/2BNP3/2N1BP2/PPP3PP/R2QK2R w KQ - 3 9 | Qd2 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
rn2r1k1/3q2b1/pp4pp/2pPp3/4N1P1/2N5/PP2Q2P/R4RK1 w - - 0 20 | Rf6 | Does Black have any passed pawns? | Yes: e5 | structure |
r1n2rk1/1p1b1pbp/4p1p1/pNPP4/P4B2/5Q2/1qB2PPP/R4RK1 w - - 0 19 | Bb3 | Is the move from f3 to h3 legal? | Yes | legality |
2k4r/2p2pp1/1nNbq3/1P2p2p/2P1P3/3PQ3/5PPP/R5K1 b - - 0 25 | Qh6 | Is the move from c7 to h8 legal? | No | legality |
r4r2/7p/3N1k2/p7/1p4R1/1P3P2/1PP3PP/2K5 w - - 2 28 | Ne4+ | Is the d-file open, semi-open, or closed? | open | files |
8/8/8/8/3qK3/2k5/8/8 w - - 6 66 | d2d4 | Is the White king in check? | Yes | check |
r1b3r1/3pk1Bp/p2Np3/1p6/8/1B5P/PP3PP1/4R1K1 w - - 1 26 | Be5 | What piece is on g5? | Empty | occupancy |
3r1rk1/5ppp/1Q1bb3/1p1q4/8/2P1B1P1/PP1N1P1P/R3R1K1 b - - 2 23 | Bh3 | What is the material balance in this position? | White is up 2 pawns of material | material |
rnbqkbnr/ppp3pp/5p2/3N4/2PQ4/8/PP2PPPP/R1B1KBNR b KQkq - 0 5 | c3d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1qkbnr/ppp1pppp/3p4/8/3P2b1/8/PPPNPPPP/RNBQKB1R b KQkq - 2 3 | d5 | What is the material balance in this position? | Equal | material |
r1bq1rk1/p1p2ppp/1p2pn2/n1Pp4/1b1P4/2N1PN2/PPQB1PPP/R3KB1R b KQ - 1 9 | bxc5 | What piece is on e2? | Empty | occupancy |
1r1r2k1/5pbp/4P1p1/p7/1pbNPBn1/8/PKB2PPP/1R1R4 b - - 0 23 | d5e6 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1qk2r/pp6/2pbbpp1/3p1p1p/3P3P/3BPQ1N/PPP1NPP1/R3K2R b KQkq - 3 10 | g5 | Is the move from e8 to f6 legal? | No | legality |
6r1/1k3p2/p1q5/4Bp2/3P1P1K/4Q3/7P/R3Rb2 w - - 7 35 | Reb1+ | What piece is on f1? | Black Bishop | occupancy |
r1bqkb1r/pp3ppp/2n1p3/8/2NN4/2PBn3/PP3PPP/R2QK2R w KQkq - 0 11 | fxe3 | Does White have any passed pawns? | No | structure |
Bnb1k2r/2B2ppp/p4q2/Q3p3/1pp5/2b3P1/P3PP1P/1R3RK1 b k - 0 16 | O-O | What is the material balance in this position? | Equal | material |
4kr2/8/pp1p1RqP/2rPp3/P3B3/1P6/2P2PP1/6K1 w - - 0 44 | Rxg6 | What is the material balance in this position? | Black is up 8 pawns of material | material |
2k5/2p2p2/1pn2P1B/2p5/r7/8/P4RPP/6K1 b - - 0 35 | c4 | Identify any Black knight outposts on the board. | a5, c5, d4 | outposts |
5r1k/4bpp1/p7/4p3/Ppb4q/1n1B1P2/1P1BK1P1/RQ5R b - - 2 29 | Nd4+ | Identify any Black knight outposts on the board. | d4 | outposts |
4r1k1/1pQ3pp/2p2p2/P7/6b1/5nP1/1P2PP1P/1R1NqBK1 w - - 3 28 | Kg2 | Is the Black king in check? | No | check |
1r1q1rk1/1p5p/pN1b4/P1pP1bp1/5p2/2B2Q2/1P4PP/3R1RK1 w - - 2 24 | h3 | Does White have any passed pawns? | Yes: d5 | structure |
3q1rk1/2n1bp1p/1rb1p1pP/p1p1P3/PnPp2N1/3P1NP1/4QPB1/R1B1R1K1 b - - 1 21 | Nca6 | Is the move from b6 to c4 legal? | No | legality |
r4rk1/2qbbp1p/p2p1np1/1pnPp3/2p1P1P1/2P2NNP/PPB2P2/R1BQR1K1 w - - 0 17 | Nh2 | What piece is on c8? | Empty | occupancy |
r1b1k1r1/1pqnbp2/p3p3/2n1pBp1/3N4/2N3BQ/PPP3PP/2KRR3 b q - 3 17 | exf5 | Is the move from c5 to h8 legal? | No | legality |
1r3k2/1r1nNpbp/1q1P2p1/1ppQp1P1/7N/7P/1P3PB1/4R1K1 w - - 2 28 | Nhxg6+ | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1bqk1nr/pppp1ppp/6n1/3Pp3/4P3/P1bB4/1PP2PPP/R1BQK1NR w KQkq - 0 7 | b4c3 | Is the Black king in check? | No | check |
1r4k1/Q4pp1/7p/Pqpp4/8/2P5/KP1R3P/8 w - - 0 35 | a6 | Is the move from a2 to h6 legal? | No | legality |
r1b1kb1r/1pqn1ppp/p2p1n2/4p3/P3PP2/2N2N2/1PP3PP/R1BQKB1R w KQkq - 1 9 | g4 | What piece is on d3? | Empty | occupancy |
rn2k1nr/pppB1pbp/4p1p1/8/3Pp1PP/4P3/PPP2P2/RNB1K2R b KQkq - 0 11 | b5d7 | Is the Black king in check? | Yes | check |
3r1rk1/1p2Nppp/p7/3q4/1n1P4/1P4P1/P5QP/1K1R1R2 b - - 2 24 | f5e7 | Is the Black king in check? | Yes | check |
rnbqk1nr/pp4pp/2pbp3/3p1p2/2PP1B2/2N2N2/PP2PPPP/R2QKB1R w KQkq - 2 6 | e3 | Is the move from f4 to d6 legal? | Yes | legality |
r4rk1/ppp2ppp/3b4/3Pp3/4R3/2PP1B1b/PP1N1q2/R1BQ3K w - - 0 17 | h4f2 | What is the material balance in this position? | White is up 1 pawn of material | material |
2br1k2/1p2rp2/p1p3pN/1n5p/3PP3/3K1R1P/1B2N3/6R1 w - - 0 35 | Rxg6 | Does White have any isolated pawns? | Yes: h3 | structure |
r3r1k1/pppq1pbp/2bp2p1/6Bn/3NP3/2N2Q1P/PPP2PP1/2KRR3 w - - 5 14 | g4 | Is the move from d4 to c8 legal? | No | legality |
7k/6p1/1pq1Br1p/p2p4/P2P1N1P/4Q1P1/1Prn1P2/5RK1 w - - 1 38 | Re1 | Is the e-file open, semi-open, or closed? | open | files |
2rb2k1/1r3p1p/2qPn1p1/p2NPp2/2p5/4BQ2/P1R3PP/3R3K w - - 9 43 | h3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5r2/p7/3kp3/2pq2Pp/2pP1p1P/Q1P5/P7/1R4K1 b - - 1 38 | Qf5 | Does Black have any isolated pawns? | Yes: a7, c4, c5, h5 | structure |
7r/p1p2k2/6p1/1Q1P1b2/8/1P3B2/P3PpK1/6b1 w - - 2 34 | Qc6 | Does White have any passed pawns? | Yes: e2 | structure |
7r/1p2kp2/p1npbp2/2q1p2p/4P3/1P1B4/P1PQ2PP/4RR1K b - - 5 6 | h4 | Are there any open files in this position? | No | files |
r1b2rk1/ppp2ppp/2n5/3N4/3P4/5N2/PP1bPPPP/R3KB1R w KQ - 0 11 | b4d2 | Is the White king in check? | Yes | check |
5r2/p1r1qp2/1p2pNp1/n3P1k1/3P4/7R/P4PPP/4RbK1 w - - 2 28 | f4+ | Are there any open files in this position? | Yes: c | files |
1rbq1rk1/p4ppp/5n2/1B6/3P4/2P2N2/P4KPP/R2Q3R b q - 0 3 | Rxb5 | What piece is on f3? | White Knight | occupancy |
2krr3/pp1q1pp1/3b1B1p/2pP3P/8/5NP1/PPQ2P2/2KR3R b - - 0 21 | gxf6 | What piece is on f2? | White Pawn | occupancy |
3r2k1/pp3p1p/2p1b1p1/6q1/2P1P3/2Q5/PP1rB1PP/R3R1K1 w - - 7 19 | c5 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
2kr1b1r/1ppqpppp/p1n2n2/5b2/3P4/P1N1BN2/1PP1BPPP/R2QK2R b KQ - 1 10 | e6 | What piece is on g7? | Black Pawn | occupancy |
2rq1bk1/3n1p2/p2pr1p1/1p5p/3BP3/1P4NP/PQ3PPN/1B2R1K1 w - - 5 29 | Rd1 | Identify any White knight outposts on the board. | d5 | outposts |
5b1r/Q2kpppp/3p4/4q3/6P1/4B2P/P1NK4/R7 b - - 0 29 | b8a7 | Is the Black king in check? | Yes | check |
r2q1rk1/pp3pbp/2npbnp1/2p5/2P1PP2/2NB1N2/PP4PP/R1BQK2R w KQ - 2 10 | f5 | Are there any open files in this position? | No | files |
rnbqkb1r/pp2pppp/3p4/2p5/4n3/2P2N2/PP1PBPPP/RNBQK2R w KQkq - 0 5 | Qa4+ | Are there any open files in this position? | No | files |
r2r2k1/1p3pp1/1q5p/2pPnN2/p2nP3/P5NP/1P1QBPP1/3R2K1 w - - 1 30 | f4 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/p3np2/bp2pqp1/2pPp3/2P5/P1P3N1/R4PP1/3QKB1R w K - 1 17 | Ne4 | Identify any Black knight outposts on the board. | a5 | outposts |
6r1/1bk2N1p/p3n2B/8/4pP2/2PpQqp1/1P4R1/4K2R w - - 1 38 | f5 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
5r2/1p6/pk4R1/3P3n/2P1P3/4KP2/P7/8 b - - 12 45 | g3g6 | Is the Black king in check? | Yes | check |
4r1k1/1p3p1p/p1p3p1/P2b4/B2P1Pn1/B5PP/3K4/R7 b - - 0 30 | Ne3 | Identify any Black knight outposts on the board. | d5 | outposts |
5r1k/2pq2p1/1p1p1rBp/p4P1Q/3n2P1/P6R/1P5P/5RK1 b - - 0 27 | g2g4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3qk2r/2pn1ppp/3b4/1Q1p4/8/4B2P/PPP2PP1/R3K2R w KQk - 2 17 | Rd1 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
rn1q1rk1/pbp1bppp/1p3n2/3p2B1/3P4/2NBPN2/PP3PPP/R2QK2R w KQ - 0 9 | Ne5 | Is the move from d3 to d1 legal? | No | legality |
r3kr2/pp1b4/4p2p/2Rp4/1P1n2Pp/P6R/5PB1/2B1K3 b q - 1 24 | h5 | Identify any Black knight outposts on the board. | d5 | outposts |
r2q1rk1/pp2bpp1/2p1bn1p/3p4/7Q/1PNB4/PBPPRPPP/4R1K1 b - - 7 17 | Ne4 | Is the e-file open, semi-open, or closed? | open | files |
r1b1kb1r/pp2pppp/1qn2n2/3p4/3P1B2/2N2N2/PP2PPPP/R2QKB1R w KQkq - 3 7 | a3 | Is the Black king in check? | No | check |
r1bqkb1r/pppp1ppp/2n2n2/8/3pP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 0 5 | Nxd4 | Does Black have any isolated pawns? | No | structure |
5k2/6p1/5p1p/p4P2/2K3r1/8/8/8 w - - 0 45 | h4g4 | Is the Black king in check? | No | check |
r2qn1kr/pppnbp1p/3pN2Q/3P1B2/2P1N3/8/PP4PP/R1B3K1 w - - 7 22 | Nxd8 | Is the move from h2 to c5 legal? | No | legality |
4kb1r/1b1n1ppp/pq1ppn2/1p4B1/4PP2/1NPB1Q2/P1P3PP/1K1RR3 b k - 0 14 | Qc7 | Are there any open files in this position? | No | files |
r2qk1nr/1pp2ppp/p1n1b3/8/QbP5/P1N5/1P2PPPP/R1B1KBNR b KQkq - 0 8 | b5 | Identify any White knight outposts on the board. | None | outposts |
r3rnk1/6pp/ppp2p2/5P2/4P3/1PN5/1PP3PR/1K1R4 b - - 0 24 | b5 | What is the material balance in this position? | Equal | material |
rnbqk2r/pp2ppbp/2p2Np1/8/3P4/3B1N2/PPP2PPP/R1BQK2R b KQkq - 0 7 | exf6 | Does White have any isolated pawns? | No | structure |
rn1q1k2/pp1n3Q/2pbppp1/3p4/3P1P2/4P3/PPP3PP/RNB2RK1 w - - 3 14 | e7f8 | What is the material balance in this position? | White is up 3 pawns of material | material |
2rq1rk1/pb1p1ppp/1pn1pb2/8/2PP4/1P3NP1/PB1Q1PBP/R4RK1 b - - 2 14 | d5 | Are there any open files in this position? | No | files |
1rb1k2r/3p1ppp/np2p3/8/2PP4/6P1/P2N1PBP/1R2K2R w Kk - 0 17 | Ke2 | What is the material balance in this position? | Equal | material |
rnb2b1r/ppp1kp1p/8/5pNN/2Bpp3/8/PPP2PPP/2KR3R b - - 0 13 | Bh6 | Is the move from b7 to b6 legal? | Yes | legality |
r4qkr/p4p2/1n4p1/2p3Bp/3bR2P/1B3QP1/PP3P2/2R3K1 w - - 4 25 | Rxd4 | Is the d-file open, semi-open, or closed? | open | files |
r1b1k2r/1pppqppp/2n5/p1b1n3/2P5/PP2PN2/1B3PPP/RN1QKB1R w KQkq - 2 9 | Nbd2 | What is the material balance in this position? | Equal | material |
r2q1rk1/ppp1ppbp/2n2np1/5b2/2BP3Q/2N2N2/PPP3PP/R1B2RK1 w - - 8 10 | Bg5 | What piece is on g2? | White Pawn | occupancy |
4r3/pRpB2pp/5p1k/b1rN4/8/5KP1/P6P/R7 b - - 6 30 | Re5 | Does Black have any passed pawns? | Yes: c7 | structure |
8/8/8/3k2p1/6P1/2K1P3/8/8 w - - 11 71 | Kd3 | Identify any White knight outposts on the board. | d4 | outposts |
1Rr3k1/p1Pq1pbp/b2Bp1p1/5n2/P1Np4/6P1/4PP1P/3Q1RK1 w - - 4 23 | Rxc8+ | Does Black have any isolated pawns? | Yes: a7 | structure |
r7/1p1n1Bkp/p2P2p1/2p1rb2/Pq6/2N3Q1/1P4PP/3R1RK1 w - - 5 23 | Rd5 | Identify any White knight outposts on the board. | None | outposts |
r7/1pr1kppp/2bNp3/8/p1P5/3RKP2/PP4PP/3R4 w - - 4 21 | Nb5 | What piece is on a4? | Black Pawn | occupancy |
r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8 | Qf3 | Are there any open files in this position? | No | files |
r4rk1/ppp1nppp/3p1q2/2b1n3/3NP3/1PP1BP2/1P2Q1PP/RN3RK1 b - - 0 12 | d5 | Identify any Black knight outposts on the board. | None | outposts |
r7/pp1N3p/1kp1pQ2/8/3P4/2P5/P1p2PrP/R3K2R b KQ - 0 21 | e5d7 | Is the White king in check? | No | check |
8/p7/P7/3K4/8/2k5/8/8 b - - 3 2 | Kd3 | Does White have any isolated pawns? | Yes: a6 | structure |
r2qrbk1/1b1n2p1/p2p3p/1ppP1p2/Pn2P3/R4N1P/1P1N1PP1/1BBQR1K1 w - - 0 20 | Nh2 | What piece is on f7? | Empty | occupancy |
r1bqkbnr/1ppp1ppp/p1B5/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4 | b5c6 | What is the material balance in this position? | White is up 3 pawns of material | material |
r3nrk1/1p3ppp/p1ppb3/6q1/1PPQP3/P4PP1/4B2P/3RK2R w K - 1 20 | h4g5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/1b6/4pp1k/1B5p/P4P2/4P3/1P4rP/R4K2 b - - 0 29 | Rxh2 | What piece is on d6? | Empty | occupancy |
2n5/4qk2/4pNnQ/pb1pP3/1p1P2P1/1P4K1/P4P2/8 w - - 2 36 | Qh7+ | Identify any White knight outposts on the board. | h5 | outposts |
1k2Q3/2p5/1p6/3P3p/2P5/q6P/P5P1/R6K b - - 5 36 | e4e8 | Is the Black king in check? | Yes | check |
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