fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1b1kb1r/pppp1ppp/2n5/4p3/3Pq3/2P3P1/PP5P/RNBQKBNR w KQkq - 0 7 | h4e4 | Is the White king in check? | Yes | check |
7r/p3R1kp/5p1p/4p3/2B1Q3/2P1P3/P4PPP/4K2R b K - 0 21 | d7e7 | Is the White king in check? | No | check |
r1br2k1/pp3ppp/2p2nn1/b3p3/2B1P3/2P2NN1/PP3PPP/R1B2RK1 b - - 1 13 | h6 | Is the move from c8 to h3 legal? | Yes | legality |
1q1r1k2/5p1p/bn2pQ1b/1r3N2/5P2/8/PPP3PP/1K1RR3 b - - 0 21 | Rxb2+ | Does Black have any isolated pawns? | Yes: h7 | structure |
r1bqk2r/p2pbppp/2p2n2/4p1B1/2B1P3/8/PPP2PPP/RN1QK2R w KQkq - 4 8 | Qe2 | Are there any open files in this position? | No | files |
6k1/1p3ppp/2p3q1/3r4/6nP/pP2PQP1/P4P2/2R2BK1 w - - 0 1 | Qxd5 | What piece is on c2? | Empty | occupancy |
r1bqkb1r/pp3p1p/2np1p2/1N2p3/4P3/8/PPP2PPP/RN1QKB1R w KQkq - 0 9 | Nd2 | Is the Black king in check? | No | check |
3B4/r7/4R1k1/6P1/8/2n5/2K1p3/8 b - - 1 74 | Kf5 | Is the move from g6 to f7 legal? | Yes | legality |
rnb1k2r/pp3ppp/4p3/1Bbn4/8/4PN2/PP3PPP/RNB1K2R b KQkq - 1 8 | f1b5 | Is the Black king in check? | Yes | check |
r1b1kb1r/pp2pp1p/2n2np1/2qp4/5B2/4PN2/PPP1BPPP/RN1Q1RK1 w kq - 0 8 | Nc3 | Identify any White knight outposts on the board. | None | outposts |
6k1/4r1p1/p1pQ3p/8/P1P1p3/1P3q1n/1B3P2/R4RK1 w - - 0 32 | Kh2 | Identify any Black knight outposts on the board. | d3, f3 | outposts |
r1bqkbnr/pp1npppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 4 | a4 | Does White have any isolated pawns? | No | structure |
1r2qr1k/1ppn2pp/3bbn2/pPp1Np2/5P2/B1NPP1P1/P3Q1BP/2R2RK1 w - - 1 17 | Nf3 | Are there any open files in this position? | No | files |
r5k1/ppp3bp/3p4/3Pn3/1n1KP1p1/1P3rP1/PBB1N2R/R2Q4 w - - 1 27 | a4 | Does Black have any isolated pawns? | No | structure |
3r2k1/p4p1p/1p1P1p2/8/8/3R2P1/q4PBP/3R2K1 w - - 1 26 | d7 | What piece is on d7? | Empty | occupancy |
rnbqk1nr/pp1pppbp/6p1/2pP4/2P5/2N5/PP2PPPP/R1BQKBNR b KQkq - 0 4 | Qa5 | Is the move from g7 to e5 legal? | Yes | legality |
r1b2r2/pp2bppk/2p1p3/q3B1N1/3P2nP/2P5/P4PP1/2RQK2R b K - 1 17 | Kg8 | Identify any White knight outposts on the board. | None | outposts |
rnbq1rk1/pp2bpp1/2p2n2/3B2p1/7Q/2N2N2/PPP2PPP/2KRR3 w - - 0 12 | Bxf7+ | Are there any open files in this position? | Yes: d, e | files |
r1bqkb1r/1p1npppp/p4n2/3P4/Q7/2N2N2/PP1P1PPP/R1B1KB1R b KQkq - 1 7 | g6 | What piece is on a1? | White Rook | occupancy |
1r2rbk1/1bq4p/pp1p2p1/6n1/P2BP3/2N4Q/1PP3BP/R4R1K w - - 0 22 | Qe3 | Identify any Black knight outposts on the board. | e5, h5 | outposts |
1n6/5k2/1P3p2/P2KpP2/4N1P1/8/7P/8 w - - 7 50 | g5 | Does White have any passed pawns? | Yes: a5, b6, h2 | structure |
5b1k/R7/p2r2pp/3Np1P1/4P3/8/P4P2/5K2 w - - 0 31 | Nf6 | What piece is on f7? | Empty | occupancy |
rnbqkbnr/pppp1ppp/8/8/3pP3/2P5/PP3PPP/RNBQKBNR b KQkq - 0 3 | d5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/2k3bp/1p6/4n3/2P1r3/1K4P1/PPR4P/1R6 b - - 8 30 | Nc6 | Is the e-file open, semi-open, or closed? | open | files |
r2q1rk1/1bp1bppp/p1n5/1p1np3/8/1B1P1N1P/PPPN1PP1/R1BQR1K1 b - - 1 11 | Qd7 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r1b1kb1r/1pq2pp1/p1nppn1p/8/4P1PP/1NN1B3/PPP2P2/R2QKB1R w KQkq - 2 10 | f3 | Is the move from b3 to d4 legal? | Yes | legality |
b2brkrn/p1pppppp/np6/8/2PP4/NP6/q3PPPP/B1QBRKRN w KQkq - 2 5 | e3 | Identify any Black knight outposts on the board. | None | outposts |
1qr3k1/5p1p/4p1p1/4P3/1rp2P2/6P1/1PQRK1P1/2R5 b - - 3 33 | Rb3 | Identify any White knight outposts on the board. | None | outposts |
r2qk1nr/ppp1ppbp/3p2p1/1B1P3b/4P3/2N1BP2/PPP2P1P/R2QK2R b KQkq - 2 9 | Kf8 | Identify any White knight outposts on the board. | None | outposts |
6k1/p5pp/4p3/4Pp2/PpP2P1P/6P1/2p2K2/5R2 b - - 0 37 | b3 | Is the move from c2 to a5 legal? | No | legality |
2kr1bnr/ppp2p1p/1qnp4/6p1/1P1PPB2/P1N2K2/2P1B1PP/R2Q3R w - - 1 13 | Be3 | Are there any open files in this position? | No | files |
r7/pp1b1pkp/3prpp1/q2N4/3BP3/1B3R2/PPP2PPP/5RK1 b - - 3 19 | Re5 | Are there any open files in this position? | No | files |
4rn1k/p5N1/1p1R4/3Q4/1P3P2/P3q2P/4n1PK/5R2 b - - 0 36 | Qg3+ | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
2r1q3/3nkrp1/pp3nQ1/3bp1BB/P3P3/8/1PP3PP/3R1R1K w - - 0 16 | Rxd5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk2r/pp2ppbp/n4np1/4B3/2P5/2N2N1P/PP3PP1/R2QKB1R b KQkq - 0 10 | Qa5 | Are there any open files in this position? | Yes: d | files |
r1r4q/p3p3/1p2N1kp/3P1pP1/2n1pP2/4P3/Q6R/2R3K1 b - - 1 35 | Nxe3 | Is the move from f5 to f3 legal? | No | legality |
2k3q1/ppp5/4b3/5n2/2P4P/4p3/PP1Q1KP1/8 w - - 0 29 | Qxe3 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
8/8/p2k1bp1/2p1p2p/2PBP3/3N3P/P1K3P1/8 b - - 0 71 | exd4 | What is the material balance in this position? | White is up 3 pawns of material | material |
4k3/1q4pp/p1pQ1pb1/4p3/PP2P1PN/5PKP/8/8 b - - 0 37 | Qc8 | What piece is on c4? | Empty | occupancy |
8/8/1K6/1p6/1q6/1pk5/8/8 w - - 0 56 | a4b3 | What is the material balance in this position? | Black is up 11 pawns of material | material |
r1bq1rk1/1p3pbp/p2p2p1/4p3/2PnP3/1PN1QB1P/PB3PP1/1R1R2K1 w - - 0 16 | Ne2 | Is the move from f3 to e2 legal? | Yes | legality |
r1q2rk1/1pp3b1/p2p1nn1/3Pp2p/1PP1Pp2/P1NN1Ppb/4B1P1/2RQBRK1 w - - 0 22 | gxh3 | Does Black have any isolated pawns? | No | structure |
r1b1k1r1/3q1p1p/p3pQp1/b2N2B1/1p6/P2P4/5PPP/R3R1K1 w q - 1 20 | Qe5 | Does White have any passed pawns? | No | structure |
rn3rk1/pbp5/1p2qpp1/3pP1P1/4NPp1/3B4/PPPQ3R/2K4R w - - 0 23 | f7f6 | Identify any Black knight outposts on the board. | f3, h3 | outposts |
2b4k/1pp5/3p1q2/3Pp1p1/1PP1P1P1/1N3nK1/4N3/2Q5 b - - 1 36 | Kg7 | Does Black have any isolated pawns? | Yes: g5 | structure |
3r1r1k/pb2nppp/1p2pn2/8/2PP4/P3P1NP/1B2B1P1/3RR1K1 w - - 1 24 | a4 | Is the White king in check? | No | check |
r1bq1r2/ppp3k1/5p2/3Pn1N1/2BQ4/8/PP4PP/R4RK1 b - - 0 21 | e4g5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r6r/2pk1pb1/p1n4p/1p1p2p1/3P2P1/2P1P3/PP1NKPPN/R6R b - - 1 17 | f6 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/pb3pp1/1p5p/n2pP3/8/5N2/P1BQ1PPP/R3R1K1 b - - 1 17 | Ba6 | Identify any White knight outposts on the board. | d6 | outposts |
r3kb1r/p2q1pp1/np2p2p/3pP3/3p2Q1/P5N1/1PPB1PPP/R3K2R w KQkq - 0 16 | Qxd4 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/1p2bpp1/p1np1n1p/4p3/4P3/1PN2N2/PBP1BPPP/R2QR1K1 b - - 1 11 | Be6 | Is the move from h6 to h5 legal? | Yes | legality |
1R4k1/4p2p/4p1p1/p2q1r2/3n1B1P/6P1/5P2/2Q3K1 b - - 4 30 | Rf8 | Does Black have any isolated pawns? | Yes: a5, e6, e7 | structure |
8/5ppk/p1pBr2p/2Pb4/nP2p2P/P3R1P1/3R1P2/6K1 w - - 3 37 | Kf1 | Does Black have any isolated pawns? | Yes: a6, c6 | structure |
1k1r4/2p2p2/1p4p1/1B1q1b1p/8/2P2QP1/5PKP/R7 w - - 0 2 | Bc6 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
r1bqk1nr/pp1p1pbp/3p2p1/1N6/3pP3/8/PPP2PPP/R1BQKB1R b KQkq - 1 8 | Qb6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn2kbnr/pp2pppp/3p4/8/2Ppq3/5N2/PP3PPP/RNBQR1K1 b kq - 1 8 | Qc6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/2b3p1/2k1p3/p4p1p/2P2P2/1PBK2P1/7P/8 b - - 4 56 | g6 | Is the move from c6 to c5 legal? | Yes | legality |
6k1/7p/p3q1p1/1p2P3/2pb1PP1/5Q2/PPB5/7K w - - 0 30 | b3 | What piece is on a1? | Empty | occupancy |
r2qkb1r/pp3ppp/1nn5/2p1p3/6b1/1BNP1N1P/PPP2PP1/R1BQ1RK1 b kq - 0 9 | Bh5 | Are there any open files in this position? | No | files |
rn1qkbnr/1p3pp1/p3p2p/2ppP2P/3P4/2PQ2N1/PP3PP1/R1B1K1NR b KQkq - 0 11 | Nc6 | Is the Black king in check? | No | check |
2k2b1r/Np4pp/2p1qp2/3rp3/8/P2P1Q1P/2P2PP1/1R3RK1 b - - 1 20 | b5a7 | Is the White king in check? | No | check |
2q2r1k/2n3bp/N1p3p1/Pp2p3/1P6/1QBP1pPb/5P1P/2R1RBK1 b - - 0 26 | Bxf1 | Does White have any passed pawns? | Yes: a5 | structure |
r2q1b1r/ppp2Bpp/1nnk4/4N1B1/8/2NP3P/PPP2PP1/R2bK2R w KQ - 3 12 | Ne4+ | Is the move from e1 to d4 legal? | No | legality |
5b2/3p1k1p/8/4RK2/1p1N1P2/1P1P4/7P/3r4 w - - 12 43 | Rd5 | Is the move from h2 to f8 legal? | No | legality |
rnbqkb1r/ppp2ppp/4pn2/3p4/2P5/5NP1/PPQPPP1P/RNB1KB1R b KQkq - 1 4 | c5 | Is the c-file open, semi-open, or closed? | closed | files |
7k/1p6/3NB1pp/pp1p4/3b1P2/5KP1/PP5P/1b6 b - - 1 32 | Bxa2 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
3r2k1/1p4p1/p4pp1/3q4/8/2P5/PP1Q2PP/4R2K w - - 0 29 | Re8+ | Is the Black king in check? | No | check |
2rq1r1k/1p1nbppp/p1p1p3/P3P3/2pP1BQ1/7R/1P1N1PPP/5RK1 b - - 3 20 | Re8 | What piece is on e4? | Empty | occupancy |
2kr2r1/qpp2ppp/2n3b1/1R1n4/3P2P1/P4N1P/1P2BP2/2Q1R1K1 w - - 1 22 | Bc4 | Are there any open files in this position? | Yes: e | files |
2r2rk1/2qnbppp/2npb3/1p2p3/4PP2/1NN1B1Q1/1PP1B1PP/3R1R1K w - - 0 17 | Nxb5 | Identify any Black knight outposts on the board. | None | outposts |
k2KN3/p7/B7/2n5/8/8/8/8 w - - 0 1 | Kc7 | Are there any open files in this position? | Yes: b, c, d, e, f, g, h | files |
r1bqr1k1/pp1nppbp/2pp1np1/8/2PP4/1P2PN2/PB2BPPP/RN1Q1RK1 w - - 1 9 | b4 | Is the e-file open, semi-open, or closed? | closed | files |
r4knr/5pp1/p1p3q1/3p4/5Bp1/1QP4P/PP3P2/R3R1K1 w - - 0 20 | Qb7 | Does White have any passed pawns? | No | structure |
3rr1k1/1pqb1pp1/p1nbpn1p/3pN3/2PP4/PP1B1N2/1B3PPP/R2QR1K1 w - - 0 15 | c5 | Does White have any isolated pawns? | No | structure |
8/5pk1/6pp/8/N5n1/8/1P1r2K1/5R2 w - - 0 57 | Kg3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1R1R4/5pk1/8/p3PP1p/Pb5P/8/1p3K2/8 b - - 0 50 | Be1+ | Are there any open files in this position? | Yes: c, d, g | files |
r1bq1k1r/pp2bp2/7p/3pnBp1/2nN3P/1N6/PP3PP1/R1BQR1K1 w - - 4 17 | Nd2 | Does White have any isolated pawns? | No | structure |
2r2knr/4b1p1/p2pb1Q1/5P2/1q2P3/1Pp1B3/P1P5/1K1R2R1 w - - 0 25 | fxe6 | Is the move from d1 to c1 legal? | Yes | legality |
rnbq1rk1/1pp1bpp1/7p/pP1pP3/P2P4/3Q1N2/3N1PPP/R1B2RK1 b - - 0 16 | c6 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
2k2r1r/1pp3q1/p1n1p3/2p1p2p/P3P1n1/2PP1NP1/1P1N1PK1/R2Q3R w - - 2 19 | Rh3 | Identify any Black knight outposts on the board. | None | outposts |
2kr3r/2q1bpp1/pn1pbn1p/Np2p2P/4P1P1/P1N1BP2/1PPQ4/R3KB1R w KQ - 1 15 | O-O-O | What piece is on a1? | White Rook | occupancy |
rnbqkb1r/ppp1pppp/3p4/4P3/8/2P5/P1PP1PPP/R1BQKBNR w KQkq - 0 5 | f4 | What is the material balance in this position? | Equal | material |
8/1B3kp1/8/p4p2/7P/4K3/n7/8 w - - 0 43 | Bd5+ | What piece is on h4? | White Pawn | occupancy |
5br1/Q7/p2Pk3/4Bbp1/1p2qp2/1P6/P1PR1PP1/1K6 w - - 6 31 | Bb2 | Is the move from g2 to b5 legal? | No | legality |
r1b1kb1r/ppp1n1pp/5q2/3P1p2/5B2/5p2/PPP1NPPP/R2Q1RK1 w kq - 0 13 | e4f3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r3r1k1/pppnb2p/2nqbppB/3p4/3P4/PN1B1N2/1P3PPP/R2QR1K1 w - - 3 16 | Qd2 | What piece is on h2? | White Pawn | occupancy |
r5k1/1ppR1rpp/4Q1q1/nPB1p3/5p2/6P1/P3PP1P/5RK1 w - - 5 26 | Qd5 | Does White have any isolated pawns? | No | structure |
4r1k1/8/2p1P1p1/p2b1P1p/6PB/6K1/7P/4R3 w - - 0 31 | h3 | Does White have any passed pawns? | Yes: e6 | structure |
r1br3k/pp2Npbp/6p1/6P1/3B1p1P/2P5/P1P5/R3KB1R b KQ - 1 19 | Re8 | Does White have any passed pawns? | No | structure |
8/R7/1p3pk1/p1p4p/3bR3/5PP1/2r1P2P/5K2 w - - 2 32 | Re8 | Are there any open files in this position? | Yes: d | files |
3rk2r/pb3pb1/2p1p2p/1p2nPp1/2p1P3/2N3B1/PP2B1PP/R4RK1 w k - 0 16 | f6 | Does Black have any isolated pawns? | No | structure |
1rq1n1k1/1p2R1pp/p1p2p2/3p4/PQ1P4/5N2/1PP2PPP/6K1 w - - 0 25 | h4 | Is the move from b2 to b3 legal? | Yes | legality |
r3nrk1/p1pb1qpp/5p2/2pPpN2/2P2R2/P1PB4/4Q1PP/5RK1 w - - 0 22 | Rh4 | Are there any open files in this position? | Yes: b | files |
8/1p1k2p1/3P4/p3K1P1/7P/4P3/4n3/8 b - - 0 46 | g4g5 | Identify any White knight outposts on the board. | d4, g5 | outposts |
8/r1R4p/p4ppk/8/5Q2/5P2/q5PP/1R5K b - - 0 38 | e5f4 | Is the Black king in check? | Yes | check |
r1bqk2r/ppp2pp1/2np1n1p/4p3/4P3/P1PB1N1P/1PP2PP1/R1BQK2R w KQkq - 0 8 | Qe2 | Are there any open files in this position? | No | files |
r3rk2/1b3pp1/p1qppn2/1p3PBp/4P3/P1PB2RQ/2P3PP/5R1K b - - 0 21 | e5 | Does Black have any passed pawns? | No | structure |
r2q1rk1/p1p1b1pp/2n5/1p3p2/1PbPp3/P1N1PPP1/1B4BP/R2QR1K1 b - - 0 15 | a5 | Is the move from g7 to g5 legal? | Yes | legality |
2kr2r1/1pq2p2/p1b1p3/n2pP3/P4PPn/B2Q3P/2P1N3/R3KB1R w KQ - 3 19 | Nd4 | Is the move from a3 to e4 legal? | No | legality |
r1br2k1/pp3pp1/2n1p2p/4P2Q/2pPB3/1q2B3/5PPP/3R1K1R w - - 2 19 | h4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
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