fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5rk1/1p2b1p1/p7/PbPP4/1P2K1Pp/5P1P/8/R4R2 b - - 0 31 | Re8 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/p7/2R2p2/1P2kp2/4n2P/3r2P1/5P2/3BK3 b - - 2 46 | f4 | What piece is on a7? | Black Pawn | occupancy |
4r1k1/p2nqpb1/3p4/3P1P1p/Pp4pP/3Q2P1/4P1B1/2R1R1K1 b - - 0 28 | Nc5 | What piece is on a2? | Empty | occupancy |
8/5bk1/2p2p2/2Q2P1p/4p1p1/4P2P/3q2P1/1R4K1 w - - 0 44 | Qd4 | Does Black have any isolated pawns? | Yes: c6 | structure |
2r4k/5pR1/1p2p2P/1p1nP1Q1/1P6/3q1N2/5KP1/8 b - - 17 57 | Ne3 | Are there any open files in this position? | Yes: a, c, d | files |
8/p7/3ppkp1/1p1b1p1p/3P4/3K4/PP5R/2N5 b - - 3 3 | f4 | Does Black have any isolated pawns? | No | structure |
r4rk1/pb1q2bp/1p2ppp1/n2p4/3P1P2/2N1PNP1/PP2Q1BP/2R2RK1 w - - 3 17 | h4 | Does White have any passed pawns? | No | structure |
8/8/3k1p2/4p3/4P3/2K5/8/8 b - - 15 69 | Kc5 | Identify any White knight outposts on the board. | None | outposts |
rnq1kb1r/ppp1pppp/5n2/3p1b2/2PP4/1Q3N2/PP2PPPP/RNB1KB1R b KQkq - 0 5 | e6 | Is the g-file open, semi-open, or closed? | closed | files |
r1b1kb1r/ppp1p1pp/2n1qp2/8/2P5/3P1N2/PP3PPP/R1BQKB1R w KQkq - 1 8 | d5e6 | Is the White king in check? | Yes | check |
r3kb1r/1p4p1/5p1p/1p1p4/5p2/2N2P2/PPP3PP/R4RK1 b kq - 1 21 | e4c3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/8/6k1/r2p1P2/6P1/4K3/7P/8 b - - 0 48 | f4f5 | Is the Black king in check? | Yes | check |
2kr3r/1p3p2/p1b1p1n1/2qpP3/P1nN1PP1/2PQ3P/4B3/1RB1K2R w K - 7 24 | Nxc6 | Identify any Black knight outposts on the board. | c4 | outposts |
4r3/pQ6/2p3Rp/2kp4/q7/2P1P3/P4P2/2K5 w - - 1 30 | Rxc6+ | Identify any Black knight outposts on the board. | c4 | outposts |
r4nk1/4b1p1/2Qnp2p/q1pp4/5N2/P3P1BP/1PB2PP1/1K1R4 b - - 0 33 | Rb8 | What piece is on e5? | Empty | occupancy |
r1bq1rk1/pp2bpp1/1n2p2p/4N3/3Q2P1/1BP1P1B1/P4P1P/R3K2R b KQ - 0 14 | Nd5 | Is the White king in check? | No | check |
8/b7/2k5/7R/7P/4p3/8/5K2 w - - 1 62 | Re5 | Does White have any isolated pawns? | Yes: h4 | structure |
r1bqkbnr/pp1ppppp/2n5/2p5/4P3/8/PPPPNPPP/RNBQKB1R w KQkq - 2 3 | Nbc3 | What piece is on c3? | Empty | occupancy |
8/p5p1/1bP4p/2k1p3/P7/6P1/3K2B1/8 w - - 3 47 | Bf3 | What piece is on e1? | Empty | occupancy |
8/8/8/1k4p1/6P1/4Pp2/3K4/8 w - - 0 63 | Ke1 | Does White have any passed pawns? | Yes: e3 | structure |
r2q1rk1/5pbp/2p1b1p1/pp1p1B2/8/2P3Q1/PP1N1PPP/R1B1R1K1 b - - 0 18 | d3f5 | What is the material balance in this position? | White is up 2 pawns of material | material |
5Q2/k7/5P1p/3p4/3P2K1/6P1/1P2bP1P/7q w - - 10 41 | Kh3 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/pp2n3/4q1pQ/3p4/1P1B4/5r2/P4P1P/3R2K1 b - - 0 29 | Qg4+ | Identify any White knight outposts on the board. | None | outposts |
r1bqk1nr/ppp2ppp/2np4/8/2B1P3/BQp2N2/P4PPP/R4RK1 b kq - 1 10 | Qf6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/3rN1pk/p1pB1p1p/2P4r/nPb4P/P3RpP1/3R1K2/8 w - - 2 37 | Kxf3 | Is the e-file open, semi-open, or closed? | open | files |
4rrk1/2p3pQ/p4q2/1p1pn3/6b1/2P2N2/PPBN2PP/R1B3K1 b - - 0 18 | Kf7 | What piece is on f7? | Empty | occupancy |
r1r3k1/4qpb1/3p1n2/NNpPnb2/Q1P1p1pp/2B1P2P/P3BPP1/1R3RK1 w - - 0 25 | hxg4 | What piece is on d1? | Empty | occupancy |
5k2/3R1pb1/p4N2/1p2p2Q/1Pq2p2/P7/1K4B1/8 w - - 3 44 | Bf1 | Identify any Black knight outposts on the board. | d4, e3, f4, g3 | outposts |
2k5/p3n3/1p1p3p/2pPp3/2P5/P1P4Q/8/1q4BK b - - 1 31 | Nf5 | Identify any White knight outposts on the board. | None | outposts |
r2r1k2/4b1p1/p4n1p/npp1N2B/8/PPN1R2P/5PP1/R1B3K1 b - - 0 21 | e2h5 | What is the material balance in this position? | White is up 3 pawns of material | material |
r4b2/2qb1k2/p2pp3/1p4P1/3NP3/2N1B3/PPPKQ3/r7 w - - 0 26 | g6+ | What is the material balance in this position? | Black is up 6 pawns of material | material |
3r1r2/pR6/p1p1pp2/1k6/1PNP4/2K3R1/5PP1/8 b - - 2 41 | h7b7 | Is the Black king in check? | Yes | check |
r1bqk2r/ppp2ppp/2np1n2/2b1p3/2P1P3/2N2N2/PP1PBPPP/R1BQ1RK1 b kq - 1 6 | Bg4 | Are there any open files in this position? | No | files |
4r3/pp4kp/2p2Pp1/4n3/8/8/PPP5/2K1R1NR b - - 0 22 | g5f6 | Is the White king in check? | No | check |
r2r2k1/pp1b1Qp1/2n1p3/6N1/2qp4/2P1P3/PP3PPP/3RK2R b K - 1 20 | Kh8 | Is the move from a7 to b7 legal? | No | legality |
rn1qk2r/ppp2Bpp/3p3n/4p2Q/3PP1b1/2P5/P1P2PPP/R1B1K1NR b KQkq - 0 7 | Kf8 | Does Black have any isolated pawns? | No | structure |
r1bqkb1r/pp1nnppp/4p3/2PpP2Q/8/2N2N2/PPP2PPP/R1B1KB1R b KQkq - 5 7 | a6 | Is the move from d8 to f8 legal? | No | legality |
r1b1k2r/ppp1qppp/2np1n2/8/4P3/2P2NP1/P1PPQ1BP/R1B2RK1 w kq - 2 11 | d3 | What is the material balance in this position? | Equal | material |
3r2k1/pR3ppp/2n1n3/2P1p3/8/4PNP1/2Q2P1P/q4BK1 w - - 0 32 | Qf5 | Does White have any isolated pawns? | Yes: c5 | structure |
8/p1n5/5p1k/1PP1pP2/P1K1N1P1/8/7P/8 b - - 0 43 | Kg7 | Are there any open files in this position? | Yes: d | files |
3r2k1/6pp/4ppb1/p7/3PPB2/1P6/P1r3PP/3RR1K1 w - - 3 24 | e5 | Identify any White knight outposts on the board. | a4, c4, c5 | outposts |
r1b1k2r/pp2ppbp/3p2p1/1N6/2P1P3/4B3/PPnK2PP/RN3B1R b kq - 2 14 | Nxe3 | Does White have any passed pawns? | No | structure |
7r/6bp/5p2/7k/6PN/8/PPPQ4/RN4K1 b - - 0 31 | f3g4 | What is the material balance in this position? | White is up 14 pawns of material | material |
3q3r/ppk2pQP/4bP2/3p4/P1pP4/2P5/2PK1P2/7R w - - 3 36 | Re1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7n/8/p2k2p1/2p1p2p/2P1Pb1N/7P/P1K2BP1/8 w - - 5 55 | Nf3 | Is the move from h4 to b8 legal? | No | legality |
2rr2k1/pb3pbR/1p2pqp1/8/6Q1/PPp4R/5PPP/2B2BK1 b - - 7 25 | c2 | What piece is on g4? | White Queen | occupancy |
4k1Q1/4p3/3n4/2pP3p/4pP2/4P3/7K/1r6 b - - 0 47 | Kd7 | Identify any White knight outposts on the board. | c6, e5, e6 | outposts |
1r3rk1/3q1ppp/4p3/1b1nP3/3PQ3/b3BN2/1R1N1PPP/1R4K1 w - - 10 26 | b4a3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3kb1r/pp1n1ppp/q3p3/3pP3/3P1B2/P2n1N2/1P2QPPP/RN3K1R b kq - 4 15 | Nxf4 | What piece is on d2? | Empty | occupancy |
2kr3r/ppp3pp/2n1R3/2bq2B1/3p4/5N2/PPP1QPPP/R5K1 b - - 4 14 | Rdf8 | Is the move from d5 to b7 legal? | No | legality |
8/4rpk1/5np1/7p/3RP3/5BPP/5PK1/8 w - - 5 51 | h4 | Identify any Black knight outposts on the board. | None | outposts |
r1bqk2r/pppp1ppp/8/4P3/1bP5/2P2Q2/P4PPP/R1B1KB1R b KQkq - 0 9 | Bc5 | What is the material balance in this position? | Equal | material |
rnbqkbnr/ppp1pppp/8/8/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq - 2 4 | Nf6 | What is the material balance in this position? | Equal | material |
rn2kb1r/ppp1qppp/3p4/1B1Pp3/8/5Q1P/PPPP1PP1/R1B1K2R b KQkq - 2 8 | f1b5 | Is the Black king in check? | Yes | check |
3r1rk1/bppbnp2/p2p3p/4p1qn/3PP1pN/1BP1N1B1/PP3PPP/2RQR1K1 w - - 1 18 | Rc2 | What piece is on e6? | Empty | occupancy |
r2q1brk/2p4p/p2p1p2/np1PpP2/5pN1/2P5/PPB2PK1/R1BQR3 w - - 0 23 | Kh1 | Is the move from e1 to f1 legal? | Yes | legality |
8/4R3/p7/4kBp1/6Pr/1P1pr3/P4R1P/6K1 b - - 2 35 | b7e7 | Is the Black king in check? | Yes | check |
8/4bk2/1p2n3/3pPp2/3p1P1p/pP1N3P/P3KB2/8 w - - 8 50 | Bg1 | Identify any White knight outposts on the board. | d6, f6 | outposts |
4rrbk/2pq2bp/pp4p1/2p3N1/P2pP2P/1P1P1NQ1/2P3P1/4RRK1 w - - 2 28 | Rf2 | Identify any Black knight outposts on the board. | None | outposts |
7k/2R4R/4p2n/p2p2p1/N5P1/1P3P1P/P2r4/6K1 b - - 2 39 | g7h7 | Is the Black king in check? | Yes | check |
5k2/p7/1pnr2p1/3p1p1p/P2P3P/2PKPBP1/8/4R3 w - - 0 39 | Rb1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b2rk1/pppnqppp/8/7n/8/2P2NP1/PP2PPBP/RN1Q1RK1 b - - 1 10 | e1g1 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2r4/1p2qpbk/p1bNp1pp/2P1Pn2/5P2/2P1B2P/P1B2QP1/R2R2K1 b - - 5 25 | f6 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r1bqk2r/pp1n1ppp/2pbpn2/3P4/3P4/5NP1/PP2PPBP/RNBQ1RK1 b kq - 0 7 | cxd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2k2r1r/1p6/p1n1p2p/3q1p1Q/3P4/P1B3R1/1P4PP/4R1K1 w - - 0 25 | Rd1 | Does Black have any passed pawns? | No | structure |
r1b1k2r/pp1n1ppp/q3pB2/8/3NP3/8/P4PPP/2RQ2KR w kq - 4 14 | Bxg7 | Are there any open files in this position? | Yes: c, d | files |
1r3rk1/pb1qbpp1/1p5p/8/3B4/1BP2Q1P/PP3PP1/R3R1K1 w - - 2 18 | c8b7 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k3/1q6/4P3/5R1N/5PK1/8/8/8 w - - 3 135 | Rd5 | Are there any open files in this position? | Yes: a, b, c, d, g, h | files |
rnbqkb1r/pp2pppp/2p2n2/3p4/2P5/4PN2/PP1P1PPP/RNBQKB1R w KQkq - 1 4 | Nc3 | What piece is on d2? | White Pawn | occupancy |
8/3R1bk1/1p4pp/p4p2/3NpP2/1P1nP1P1/7P/2r2BK1 b - - 0 40 | Nc5 | Does Black have any passed pawns? | No | structure |
r2qkb1r/1p1bnppp/p3p3/3pP3/5B1P/2N3P1/PPP2PB1/R2Q1RK1 b kq - 0 12 | Ng6 | What piece is on h1? | Empty | occupancy |
3q1b1k/pp1b1B2/2r2nQp/n3r3/8/2N1B1PP/PP2PP2/3R1RK1 w - - 1 21 | Bxh6 | Is the Black king in check? | No | check |
rn3rk1/2pp2pp/1p2n3/p2P1p2/7q/4PP2/P1Q1B1PP/R1B2RK1 b - - 0 18 | Nc5 | Is the move from h4 to h6 legal? | Yes | legality |
2r3k1/6p1/p3p3/5pQ1/8/1P2P2P/P1p2PPK/2Rr4 b - - 2 30 | Rxc1 | Are there any open files in this position? | Yes: d | files |
3rb3/1r2qp1k/2p1p3/2P1N2p/p1BP1Q2/P7/5P2/6RK w - - 2 42 | Nxf7 | Identify any Black knight outposts on the board. | f5 | outposts |
8/2R5/6p1/6Kp/2N5/8/2p5/2k5 w - - 4 71 | Ne3 | Identify any Black knight outposts on the board. | f5, g4, h5 | outposts |
r4rk1/pbnq1ppp/np3b2/3p1N2/5B2/2N3P1/PP3PBP/R2QR1K1 w - - 4 16 | Bh3 | Is the Black king in check? | No | check |
3r1rk1/1p2qppb/1np1pn2/p3N1P1/Pb1PP3/2N5/1P2Q1BP/R1B2RK1 b - - 0 17 | Nfd7 | Is the move from f8 to h5 legal? | No | legality |
r1b1kb1r/pp2pppp/2n5/2q5/4QB2/2P5/PP3PPP/R3KBNR b KQkq - 0 9 | g6 | Is the d-file open, semi-open, or closed? | open | files |
r1b1k2r/pp1n1ppp/8/2P1p3/2B1nB2/P1P1PP2/6PP/R3K1NR b KQkq - 0 13 | exf4 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnb1kbnr/p2q1ppp/1pp1p3/3pP1B1/3P2Q1/2NB4/PPP2PPP/R3K1NR b KQkq - 1 8 | Ba6 | Is the White king in check? | No | check |
rnbqk1nr/pp2ppbp/2p3p1/8/2Q5/5NP1/PP1PPP1P/RNB1KB1R w KQkq - 1 6 | Bg2 | What is the material balance in this position? | Equal | material |
2r5/3k3p/4pP2/1pp1K1P1/1P1p3P/8/8/3R4 w - - 1 45 | h5 | Identify any Black knight outposts on the board. | b4, c3, d4, d5, e3 | outposts |
2r5/8/5p2/3pkPp1/PR4P1/1P2K3/8/8 b - - 0 46 | d4b4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3k2r/ppp1n1pp/5p2/3q4/3P4/5N2/PP2QPPP/R3R1K1 b kq - 1 15 | Qd7 | Does White have any isolated pawns? | Yes: d4 | structure |
r1b1k2r/pp1n1ppp/2p1p3/q2p4/2PP1B2/b1RBP3/1P3PPP/3QK1NR b Kkq - 1 10 | Bxb2 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
8/p4k1p/n3p1p1/5p2/2QPb3/7P/P5q1/4RR1K w - - 0 36 | g3g2 | Is the White king in check? | Yes | check |
rnbqkb1r/pp3ppp/8/3Np3/4PPn1/8/PB4PP/1R1QKBNR w Kkq - 0 11 | Bb5+ | Is the move from f1 to b3 legal? | No | legality |
r4rk1/ppp4p/8/4pp1P/2Bp4/7R/PPPbNP2/1K6 b - - 1 23 | d3c4 | Is the Black king in check? | Yes | check |
r4k2/1b3ppp/1p3n2/2q1n3/1p1RPP2/1P2Q1P1/P5BP/4R1K1 b - - 2 22 | Nfg4 | What piece is on c7? | Empty | occupancy |
rnbqk2r/p1p1nppp/1p2p3/3pP3/3P4/P1P5/2P2PPP/R1BQKBNR w KQkq - 0 7 | Qg4 | What piece is on f1? | White Bishop | occupancy |
rn3r2/pbppq1pk/1p2pN2/4N3/3P4/3B4/PPP2PPP/R3K2R b KQ - 0 12 | Kh6 | Is the Black king in check? | Yes | check |
rnbqkb1r/pp1ppppp/5n2/4P3/3p4/2P5/PP3PPP/RNBQKBNR b KQkq - 0 4 | Nd5 | Identify any Black knight outposts on the board. | None | outposts |
1r3qk1/1b3pbp/p1p3p1/Pp1nn3/1P1P4/1Q1N4/1B3PPP/4RBK1 w - - 0 25 | dxe5 | Does White have any isolated pawns? | Yes: d4 | structure |
r2qkb1r/pp1n1ppp/3ppn2/2p5/4P3/5N2/PPPPQPPP/RNB2RK1 w kq - 0 7 | c3 | What is the material balance in this position? | Equal | material |
r2q1k1r/1p2Rppp/p2pbP2/2p4Q/8/8/PPP2PPP/nNB3K1 w - - 3 15 | Bh6 | Does White have any isolated pawns? | No | structure |
r1r5/2p1kn2/4p3/p1Pp1p2/P4P2/2P1P3/1R1KB3/1R6 w - - 0 40 | c4 | Does Black have any isolated pawns? | Yes: a5 | structure |
1r1r2k1/1Bp2pp1/4b2p/p1b1n3/P7/2P4P/1P3PP1/RNB2RK1 w - - 1 17 | Ba6 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/p2b2p1/rp1kP2p/r6P/P1PK2P1/R7/R1B5 b - - 0 50 | Bxe5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2q1rk1/3n1pbp/b2pp3/2pP2Pp/4PP2/2N5/PPQ5/R1B1K1NR w KQ - 0 16 | Nge2 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
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