fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1b1kb1r/2q2pp1/p1nppn1p/1p6/4P1PP/1NN1BP2/PPP5/R2QKB1R w KQkq - 0 11 | Qd2 | Is the move from d1 to g3 legal? | No | legality |
8/8/8/6pq/4Q3/6K1/2n2N2/1k6 w - - 0 49 | Nd3 | Does White have any passed pawns? | No | structure |
8/8/4pp1k/1B5p/P2q1P2/1K1Q4/1P3P1P/6r1 b - - 0 34 | Qxf2 | Identify any Black knight outposts on the board. | d5, f5 | outposts |
4r1k1/p5pp/4Kp2/3p4/P1r1b3/4P1QP/5PP1/2R4R w - - 2 34 | d8e8 | Is the White king in check? | Yes | check |
r1b2rk1/1pp2nbp/4pqp1/p2p4/2PPQ3/P4NPB/1P1B1P1P/1R1R2K1 w - - 0 17 | Qe2 | Is the move from e4 to e5 legal? | Yes | legality |
r2r4/1p4bk/2p1b1pp/p1n1Pp2/P1N2P2/2B3PP/1P4K1/R2R1B2 b - - 4 29 | Nb3 | Is the move from h7 to g8 legal? | Yes | legality |
r5k1/2qb1r1p/p1n3p1/3pP1P1/Pp6/3QB3/1PP1N1P1/2KR3R b - - 0 22 | Rc8 | Is the move from d7 to f2 legal? | No | legality |
5rk1/1R3ppp/3P4/8/4P1R1/3pr2q/8/3Q2K1 b - - 0 33 | d5d6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rn1qk2r/ppp2ppp/8/3pPb2/3P4/5N2/P1P1Q1PP/R1B2RK1 b kq - 0 11 | O-O | Is the f-file open, semi-open, or closed? | semi-open for White | files |
rnbqkb1r/pppp3p/6p1/5p2/2BQpP2/2P2N2/PPP3PP/R1B1K2R b KQkq - 1 9 | Qe7 | Is the move from h8 to g8 legal? | Yes | legality |
3r4/2k2p1P/1p2pP2/6P1/1p3PK1/1P6/8/8 w - - 1 47 | Kh5 | Identify any Black knight outposts on the board. | d5 | outposts |
rnbqk2r/1pb1n1pp/p1p2p2/3p4/2PPp1P1/1QN4P/PP1BPPB1/2KR2NR b kq - 3 10 | b5 | Does Black have any isolated pawns? | No | structure |
r1bqkbnr/ppp2ppp/2n5/3p4/3PPp2/5N2/PPP3PP/RNBQKB1R w KQkq - 0 5 | exd5 | Identify any White knight outposts on the board. | None | outposts |
8/k1p1Rp1p/pp6/8/2NQ4/1P4P1/2q2PKP/r7 b - - 3 28 | g1g2 | Identify any White knight outposts on the board. | f4, h4 | outposts |
r3rbk1/1bp2p2/p1q3pN/1pn1p1BQ/4P3/2P5/PPB2PP1/3RR1K1 b - - 1 25 | Kg7 | What is the material balance in this position? | Equal | material |
r1bq1rk1/5pbp/2pQ1np1/1p2n3/4P3/1PN1BP2/P3N1PP/3RKB1R b K - 0 13 | Nfd7 | Is the White king in check? | No | check |
7k/Q7/5nRp/p2q1P2/P5P1/7K/5P2/8 b - - 0 42 | Qh1+ | Is the move from d5 to g8 legal? | Yes | legality |
r3kb1r/pp3pn1/2n1p2p/q2p1bp1/2pPP3/2P2NB1/PP1NBPPP/R1Q1K2R b KQkq - 0 14 | Bh7 | Is the d-file open, semi-open, or closed? | closed | files |
rnb1kb1r/pp1p1ppp/4pn2/2p3B1/3P4/3BPN2/PqPN1PPP/R2QK2R b KQkq - 1 6 | cxd4 | Are there any open files in this position? | No | files |
5rk1/5pp1/4b2p/3p1n2/1q3B2/2P5/4BPPP/3R2K1 w - - 0 27 | cxb4 | Does Black have any isolated pawns? | Yes: d5 | structure |
r1bq1rk1/bpp2ppp/p2p1nn1/4p3/PPBPP3/2P2N2/3N1PPP/R1BQR1K1 b - - 0 11 | c6 | Identify any Black knight outposts on the board. | None | outposts |
5r2/2prnBk1/p4Rp1/P1q1p3/1pN1P1p1/3PP1P1/1PPN1R2/6K1 w - - 3 27 | b3 | Is the move from c2 to c3 legal? | Yes | legality |
rn1qkb1r/pb2pppp/1p1p1n2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 b kq - 1 6 | e5 | What piece is on g5? | Empty | occupancy |
4rr1k/p3q3/6pp/2pB1pP1/Np2nB2/6P1/PPQ5/R2R2K1 w - - 2 28 | Bxe4 | Identify any Black knight outposts on the board. | d4, e4, g4, g5 | outposts |
rq3rk1/pb3ppp/2pb1n2/1p2n3/3NP3/2N5/PPQ1BPPP/R1BR2K1 b - - 1 14 | Ned7 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r2r2k1/pbq1bppp/1p2p3/2p1P3/4B3/2P2PP1/PPN1Q1P1/3RR1K1 w - - 1 21 | c4 | Is the move from d1 to d8 legal? | Yes | legality |
2r2rk1/3b2pp/p4p2/1p1pPp2/2qN3P/PR4R1/2PQ2P1/4K3 w - - 0 23 | Rbc3 | What piece is on h7? | Black Pawn | occupancy |
B7/8/4bk2/5p2/5Rp1/6P1/1r6/6K1 b - - 15 54 | Ke5 | Does White have any isolated pawns? | Yes: g3 | structure |
r4rk1/4Rp2/4p1pQ/pp2P3/1P2bP2/P3q3/7P/2q2KR1 w - - 0 35 | c2c1q | Is the White king in check? | Yes | check |
r1b3k1/p1ppqppp/1p1n1b2/8/3P1B2/2N5/PPP2PPP/R3QBK1 b - - 2 14 | Bb7 | Does Black have any passed pawns? | No | structure |
1rbqr1k1/3nppbp/2np2p1/1p1N2B1/4P3/6P1/1PP1NPBP/R1Q2RK1 w - - 4 15 | c3 | Does Black have any isolated pawns? | Yes: b5 | structure |
8/p7/1p2Q2p/2p2pk1/2P5/P2qPpP1/1P3P2/4K3 w - - 6 40 | Qe7+ | Is the move from e3 to b7 legal? | No | legality |
r4r1k/3q1p2/p1p4Q/4p3/2B1P3/2P3PP/1P3b1K/R1B1R3 b - - 0 22 | g6h6 | Is the Black king in check? | Yes | check |
r5k1/pR2p2p/4p1p1/8/P1qrP3/5P2/6PP/2Q2RK1 b - - 1 23 | Qe2 | Does White have any isolated pawns? | Yes: a4 | structure |
3rr1k1/p5bp/1p2bpp1/2p5/5B2/1NP4P/PP3PP1/R2R2K1 b - - 1 21 | Kf7 | Does White have any isolated pawns? | No | structure |
1rq2rk1/4ppbp/1n1p2p1/p2P4/Nn2P3/2B2NPP/1P3P2/R2QRK2 w - - 1 20 | Bxg7 | Is the White king in check? | No | check |
4r1kR/p4p2/2brp3/n1p1N1p1/4P3/P6R/1K4P1/8 b - - 1 33 | h6h8 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r4rk1/p1p2pp1/6q1/6Q1/2PB2n1/2P5/P5PP/3R1RK1 w - - 7 22 | e6g6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1r1k1/pp3p2/1q4pP/3pnpN1/5P2/P2B3Q/1PP5/1K1R3R w - - 0 25 | Rde1 | Does Black have any passed pawns? | No | structure |
r3k2r/3bbp1p/pqnppp2/1p6/4PP2/2NB1N2/PPPQ2PP/1K1R3R b kq - 3 13 | b4 | Is the move from b5 to b4 legal? | Yes | legality |
R5k1/6p1/4bp1p/4p2P/4P3/1r6/1r4P1/4R1K1 b - - 1 36 | a5a8 | Is the Black king in check? | Yes | check |
3q1rk1/5rbp/p1npb3/1p1Npp1Q/5P2/2PBN3/PP4PP/R4RK1 b - - 0 18 | Ne7 | Is the move from g8 to g8 legal? | No | legality |
5rk1/pR2Kp1p/4p3/2bp3P/2p5/8/P7/8 w - - 6 40 | d4c5 | Is the White king in check? | Yes | check |
q7/4bkp1/p1Rp1p2/Pp1PpPr1/1P1pP3/3P3P/3B2K1/3Q4 w - - 2 36 | h5g5 | Is the Black king in check? | No | check |
r1b1k2r/pp3ppp/2nbqn2/4p3/1pP5/P2B1N2/1B1P1PPP/RN1QR1K1 b kq - 8 10 | O-O | Does White have any isolated pawns? | Yes: a3 | structure |
3k4/5ppp/b3p3/2P5/1p2Pn2/1P6/3K1PPP/7R b - - 1 27 | Nd3 | Does Black have any isolated pawns? | Yes: b4 | structure |
3r1bk1/ppq2ppp/2p1n3/7Q/4B3/1P3NPP/P1P2P1K/3R4 b - - 1 1 | g6 | Are there any open files in this position? | Yes: d, e | files |
r1b2rk1/pp3pp1/3p4/2pP3p/4PPq1/2P3N1/P1Q2RPP/R5K1 b - - 1 22 | b5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2r2k1/pp1b1pp1/1qn2b1p/3p4/3P4/P2BBN2/1PQ2PPP/2RR2K1 w - - 0 16 | h3 | Does Black have any isolated pawns? | Yes: d5 | structure |
2rr2k1/5ppp/2q5/p3PP2/5Q2/2p4P/PP4P1/1KR4R b - - 1 28 | Rb8 | What piece is on f7? | Black Pawn | occupancy |
r4k1r/pp4pp/n1p2nB1/3p4/7q/2B2N1b/PPP1QPPP/R3R1K1 b - - 9 17 | Qh6 | What piece is on c7? | Empty | occupancy |
r2qk2r/pppn1ppp/4pbb1/6B1/3P4/6N1/PPP1BPPP/R2QK2R w KQkq - 0 10 | Bxf6 | What piece is on c7? | Black Pawn | occupancy |
4k3/3n2K1/4r1p1/p4pBp/1p5P/3R1PP1/P7/8 w - - 4 46 | Rd2 | What piece is on g1? | Empty | occupancy |
r3k2r/p2n1ppp/4p3/2P5/4N3/4P3/1P3P1P/R3K2R b KQkq - 0 19 | f5 | Is the move from a8 to g2 legal? | No | legality |
8/8/p1kn1bp1/2p1p2p/2P1P3/3K3P/P4BP1/4N3 w - - 23 64 | Bg3 | Identify any White knight outposts on the board. | None | outposts |
3r3k/1p3pp1/p1p4p/3b4/2r5/4BN1P/PP3PP1/3R2K1 w - - 0 27 | Ne5 | Identify any Black knight outposts on the board. | d5 | outposts |
6k1/1b1n1p1p/p5p1/2qp4/1p1Qn3/1P1BPN2/P3NPPP/6K1 w - - 4 31 | Qxc5 | Identify any White knight outposts on the board. | d4 | outposts |
3b4/1p4k1/r2Nb1p1/p3P3/2p1Q3/8/Pq3PP1/1R4K1 b - - 3 28 | Bd5 | Identify any White knight outposts on the board. | d6 | outposts |
2r2bk1/p1qr1pp1/2p1p1p1/8/2PP2nP/P3R1P1/1BQ2PB1/4R1K1 w - - 1 26 | Rxe6 | Is the White king in check? | No | check |
r1b3k1/1pq3pp/p2b4/2pp4/2n5/4BN2/PPQ2PPP/2KR3R b - - 1 19 | Qc6 | Is the move from c8 to h3 legal? | Yes | legality |
1r6/p4Qpk/4p3/2q5/R7/4P3/1P1r1PKP/5R2 b - - 1 23 | Rb4 | Does Black have any passed pawns? | No | structure |
2R5/pr3ppk/4pn1p/8/8/3nPNP1/PrRN1PKP/8 b - - 6 28 | Ng4 | Is the White king in check? | No | check |
1rb1rbk1/1pqn1p1p/p2p1np1/2pP4/P1N1P3/2N2P1P/1P2B1PB/R1Q1K2R w KQ - 1 18 | Na3 | Are there any open files in this position? | No | files |
4rrk1/p4p1p/6p1/8/3RpQ2/P1P1Pq2/1P1R3P/2K5 w - - 5 34 | Kc2 | What piece is on f8? | Black Rook | occupancy |
8/8/8/8/R7/6P1/k6P/2Q3K1 b - - 7 59 | b4a4 | Identify any White knight outposts on the board. | f4, h4 | outposts |
2rq1rk1/pp1n1ppp/5n2/3p4/8/1Pb1PN2/PB1N1PPP/1R1Q1RK1 b - - 7 14 | Qa5 | Is the move from d5 to d4 legal? | Yes | legality |
6k1/8/6qp/5n2/5K2/8/3r4/8 b - - 2 49 | e5f4 | Identify any Black knight outposts on the board. | g5 | outposts |
r2q2k1/3n3p/2b1p3/3pn1rp/1p1B4/pP2Q3/P1P1B1PP/1K1R1R2 w - - 0 28 | h4 | Does Black have any passed pawns? | Yes: e6 | structure |
2kr1b1r/p1ppqp1p/Qp4p1/n3Pn2/8/2N1PB2/PPPB1PPP/R3K2R b KQ - 2 12 | d3a6 | Is the White king in check? | No | check |
3kq3/6p1/2n3P1/8/ppP1Q3/4P3/1P2BK2/8 w - - 1 43 | Qd5+ | Is the White king in check? | No | check |
8/3q1pk1/5p2/2R1p2p/pP2P2P/b2N2P1/5P1K/3R4 b - - 0 36 | Qd4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqk2r/pppp1ppp/2n2n2/2b1p1B1/2B1P3/3P1N2/PPP2PPP/RN1QK2R b KQkq - 2 5 | Be7 | Is the d-file open, semi-open, or closed? | closed | files |
r6b/1pP1pK2/1p6/8/3k1P2/5B2/7P/8 w - - 1 5 | Bxb7 | What piece is on d4? | Black King | occupancy |
3k1bnr/pp1rp3/5p2/5Qpp/P2N4/2R3BP/5PP1/1q2K2R w K - 0 19 | b4b1 | Is the White king in check? | Yes | check |
4r1k1/1bq1r1bp/pp1ppnp1/8/Pn2PP2/1NN1B2R/1PP2QBP/3R2K1 w - - 0 27 | Bxb6 | What piece is on a7? | Empty | occupancy |
r2q1rk1/1bp1bppp/p3pn2/np1P4/2p1P3/P1N1BNP1/1P2QPBP/3R1RK1 b - - 0 13 | exd5 | Does Black have any passed pawns? | No | structure |
7r/6p1/4Q1k1/p2pPp2/3P3R/4q2P/1P4PK/8 b - - 9 40 | Kg5 | Does White have any passed pawns? | Yes: e5 | structure |
r2qkb1r/pp3ppp/2n1pn2/3p4/3P4/3B1Q1P/PPP1NPP1/R1B1K2R b KQkq - 3 9 | g6 | Are there any open files in this position? | No | files |
5rk1/1pp2ppp/p4q2/3p4/3n4/P4PNP/1P1Q1PP1/4R1K1 b - - 0 18 | d1e1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bq1rk1/p2n1ppp/1pp1pn2/3p4/2PP4/5NP1/PP1QPPBP/RNR3K1 w - - 0 10 | Qf4 | Is the Black king in check? | No | check |
8/p6p/4k2p/5p1P/r5P1/5PK1/8/8 w - - 0 41 | f6f5 | What is the material balance in this position? | Black is up 6 pawns of material | material |
3r2k1/p3qpp1/5bbp/3B4/8/1P2QP2/P4BPP/3R2K1 b - - 1 25 | Qa3 | Identify any White knight outposts on the board. | a4, c4 | outposts |
r3r1k1/2R3p1/p2pp2q/1p2b3/4N1Q1/1P6/1P4P1/3R3K w - - 6 30 | Kg1 | What piece is on b3? | White Pawn | occupancy |
6k1/p1pR3p/2p2r2/4b2P/2P1p3/1P2Pp1B/P4PK1/8 w - - 0 28 | f4f3 | Is the White king in check? | Yes | check |
6k1/1p2rrbp/pPp4B/2Pp1pR1/1P1P4/5KRP/6P1/8 w - - 2 47 | h4 | Does Black have any isolated pawns? | Yes: f5, h7 | structure |
1k5r/2R2Q1p/p1p4b/1r5q/4R3/8/PPP2P1P/1K6 w - - 3 23 | Rb7+ | Does Black have any isolated pawns? | Yes: a6, c6, h7 | structure |
7r/6p1/4p3/2bkR3/1p1p1P2/p1p2K1P/2P5/7R b - - 1 52 | Kc4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/6p1/3p4/1p2p3/2kp2P1/5P1p/3KPN1P/8 w - - 2 45 | Nxh3 | Is the White king in check? | No | check |
3r2k1/1p3p1p/pn3p2/5P2/q1p5/6PP/BP2QP2/4R2K w - - 0 27 | Qg4+ | Identify any White knight outposts on the board. | f4, h4 | outposts |
r1bqk2r/1pp2pp1/2np1n1p/p1b1p3/2B1P2B/2PP1N2/PP3PPP/RN1QK2R w KQkq - 0 8 | Nbd2 | Is the move from d3 to e3 legal? | No | legality |
5rk1/1p1r1ppp/pBn5/P4N2/Rb2p3/1P6/2P2PPP/5RK1 w - - 1 26 | Nd4 | Is the White king in check? | No | check |
r4rk1/1p3p2/2b1pq1p/p3p3/2P1n1P1/1P2Q3/P3N1PP/1R1R1BK1 b - - 1 4 | Qh4 | What piece is on d1? | White Rook | occupancy |
2r2b1k/1b3R2/p5Q1/1pnPp3/7q/4B2P/PPP3B1/6K1 w - - 5 31 | Bg5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r7/p4ppp/2pkb3/8/4B3/1P6/P4PPP/4R1K1 b - - 0 24 | a5 | Is the move from h7 to e1 legal? | No | legality |
N5k1/pp4pp/8/3n1p2/3Pr1b1/2K2N2/PP3PPP/R4B1R w - - 4 18 | b4d5 | Is the White king in check? | Yes | check |
r1bqkb1r/5ppp/p1n1pn2/1pp5/2BP4/2N1PN2/PP2QPPP/R1B2RK1 w kq - 0 9 | Bd3 | Is the White king in check? | No | check |
r1br2k1/pp3ppp/2n1p3/8/1P2n3/2P1PN2/1B2BPPP/R3K2R w KQ - 2 14 | Nd4 | What piece is on b1? | Empty | occupancy |
2kr1b1r/pppb2pp/5q2/3p1p2/3Pn3/2PB4/PP1N1PPP/R1BQ1RK1 w - - 1 10 | f3 | Does White have any passed pawns? | No | structure |
r4rk1/3q1pp1/b2p2np/2p5/2P1P1N1/3P2BP/2Q3P1/4RRK1 b - - 0 27 | Bb7 | Are there any open files in this position? | Yes: a, b | files |
r4rk1/pp1n1p1p/1q2p3/3pP3/3P1Pp1/2N5/PP1Q2PP/2R2RK1 w - - 4 17 | f5 | Identify any White knight outposts on the board. | None | outposts |
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