fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r3r1k1/1pqbbppp/p2ppn2/P7/1n2PP2/2NBBN2/1PP3PP/R2Q1R1K b - - 2 14 | Rac8 | Are there any open files in this position? | No | files |
r1bq1rk1/p3bppp/2p1p3/3n4/2B5/5N2/PPP2PPP/R1BQ1RK1 w - - 2 11 | Qe2 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
4brk1/2q1r1pp/3p4/p1p2p2/P1P5/1BQ1P1P1/3N1P1P/R4RK1 w - - 1 2 | Bd1 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1b2b2/ppp5/5kp1/3B4/3np3/2N5/PPP2PPP/R3K2R w KQ - 1 15 | Bxe4 | What piece is on b6? | Empty | occupancy |
1rb2r1k/pp1nNpp1/3p3p/4pP1n/2B1P3/3P2qP/P5P1/1R1QNRK1 b - - 2 21 | Qh4 | Identify any White knight outposts on the board. | None | outposts |
r2q1rk1/pp1bbppp/3p1n2/2p1p3/P2nP3/2NP2PP/1PPN1PB1/R1BQ1RK1 b - - 0 10 | Nc6 | Are there any open files in this position? | No | files |
1n3rk1/1r3ppp/4pq2/1pQp4/1P6/2R2BP1/P3PP1P/2R3K1 w - - 1 22 | e4 | Is the move from c5 to d4 legal? | Yes | legality |
r1k2b1r/ppp2pp1/4b3/2p1P2p/8/1P2P2P/PBP1N1P1/3R1RK1 b - - 2 19 | g5 | Is the move from f7 to f5 legal? | Yes | legality |
5rk1/1bqnr1np/p3p1p1/2ppP3/P7/2P1QNPP/3N1P2/R3RBK1 w - - 1 26 | g4 | What piece is on f8? | Black Rook | occupancy |
r2q1rk1/pp2ppbp/2ppnnp1/6B1/2PPPPb1/2N2N2/PPBQ2PP/R3K2R w KQ - 6 11 | Bh4 | Are there any open files in this position? | No | files |
r3nrk1/ppp2ppp/3pb3/4P3/B6q/2PNP3/PP3PPP/R1nQ1R1K w - - 0 15 | Rxc1 | Is the move from d3 to e8 legal? | No | legality |
4r1k1/p6p/bp1p2p1/2pr4/P1N5/4R3/1PQBK1Pq/4R3 b - - 0 27 | Bxc4+ | Is the White king in check? | No | check |
r3k3/pp2b3/2ppbpp1/q7/4PP1P/P1N2Q2/1PP5/2KR1B2 b q - 2 20 | Qh5 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
rnb1kbnr/ppp1pppp/3q4/8/8/2N5/P1PP1PPP/1RBQKBNR w Kkq - 2 6 | Nf3 | Does White have any isolated pawns? | Yes: a2 | structure |
r1bq1rk1/p2nbppp/1pp1pn2/3p4/2PP4/5NP1/PPQBPPBP/RN1R2K1 w - - 0 10 | Bc3 | What is the material balance in this position? | Equal | material |
rn4k1/pb1p2p1/1p6/2p1p1B1/2P1P3/P1P2NPp/5PnP/R4K1R b - - 0 20 | Bxe4 | Does White have any isolated pawns? | Yes: a3, c3, c4 | structure |
r3r1k1/2pq2pp/bpn5/3p4/Q3PP2/4R1P1/PB4BP/R5K1 b - - 0 20 | Bf1 | What piece is on e5? | Empty | occupancy |
3r4/3p1pk1/4b1p1/1B5p/PP6/3R3P/5PP1/6K1 w - - 3 31 | a8d8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b4r/1p2kp1p/p3pp2/2n5/1q1NP2P/1B5R/P4PP1/2RQ2K1 b - - 9 18 | Nxe4 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/2k1b3/4n3/3pPp2/1p1p1P1p/pP1N3P/P3KB2/8 b - - 45 89 | Kd7 | Identify any Black knight outposts on the board. | e3 | outposts |
R7/5ppk/P7/4p2p/5n1P/5r2/8/7K b - - 0 55 | Ra3 | Identify any White knight outposts on the board. | None | outposts |
2r4r/1b2kppp/p2bpn2/1p6/P2N4/1B2P3/1P1B1PPP/2RR2K1 b - - 0 16 | b4 | What piece is on f7? | Black Pawn | occupancy |
3r1r1k/1q2bpp1/2p4p/1p2PQ1P/1PnBN3/2P5/6P1/3RR2K b - - 0 33 | Rd5 | What is the material balance in this position? | Equal | material |
4r2b/5R2/p5p1/1p2p1P1/1P4k1/2P1BP2/1P2K3/8 b - - 0 40 | Kg3 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/pp1qn1p1/3p3p/2pPp3/2P1P3/2P3P1/P1Q2B1P/6K1 b - - 0 27 | Nc8 | Does Black have any passed pawns? | No | structure |
rn2r3/1p3kpp/2p5/pP3b2/3pN3/5P2/PP1K2PP/2R3NR b - - 1 16 | Bxe4 | What piece is on h8? | Empty | occupancy |
8/8/p2k1b2/2p3pp/2PpP3/3N3P/P4KP1/8 b - - 13 81 | Be5 | Does White have any passed pawns? | Yes: e4 | structure |
r2qkb1r/pp1n1ppp/2ppbn2/4p3/2P5/2NP1NP1/PP2PPBP/R1BQK2R w KQkq - 3 7 | Ng5 | Are there any open files in this position? | No | files |
4r1k1/1bq1r1bp/pp1ppnp1/8/Pn2PP2/1NN1B1R1/1PP2QBP/3R2K1 b - - 1 27 | Rf7 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/2p1k1pp/1b6/pP1B4/P1P1Pp2/1K1Qnq1r/R6P/2R5 w - - 3 34 | Rc3 | Identify any White knight outposts on the board. | a6, c6 | outposts |
r4rk1/pbqp2pp/1p1b1p2/4p3/2PP1n2/PP6/1B1N1RPP/R2Q1BK1 b - - 2 18 | e4 | Are there any open files in this position? | No | files |
r4kr1/R5pp/2NB4/2P5/p3P3/3n1P2/b5PP/6K1 b - - 3 26 | e7a7 | Is the Black king in check? | Yes | check |
r1bk1b1r/ppp5/5p1p/4p3/4P3/2N5/PPP2PPP/2KR1B1R b - - 1 11 | e1c1 | Is the Black king in check? | Yes | check |
r1b2rk1/ppqn1pp1/2pb1p2/8/2PP3p/3B3P/PP2NPP1/R1BQR1K1 b - - 0 12 | Rd8 | Is the move from d7 to b6 legal? | Yes | legality |
3k1r2/p4p2/4PP2/6r1/Qp2q3/1p2b3/1P4PP/4R2K w - - 2 34 | Qd7# | Identify any Black knight outposts on the board. | None | outposts |
r1r3k1/pb3pp1/1n2p3/3q3p/3NB2B/4P1Q1/5PPP/2R2RK1 b - - 0 25 | Qxe4 | Identify any Black knight outposts on the board. | None | outposts |
r2q1r1k/1ppbnnbp/p2p2p1/2PPpp2/B3P3/2N1BN1P/PP3PP1/R2Q1RK1 w - - 0 15 | cxd6 | What piece is on h2? | Empty | occupancy |
6R1/7p/6k1/pBp5/P1Pb3Q/1P5P/8/5R1K b - - 10 44 | f8g8 | Is the White king in check? | No | check |
r4rk1/p4ppp/2p1b3/2bn4/4p3/6B1/PPP1NPPP/R2N1RK1 b - - 5 13 | Rad8 | Identify any White knight outposts on the board. | None | outposts |
3r1rk1/2qp1pp1/ppn4p/3R1N2/2P5/6P1/PP2PPBP/3Q2K1 w - - 4 25 | e3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
8/2Q2pkn/6p1/8/3Np2p/2p1P2P/5qPK/8 w - - 0 70 | Qxc3 | Does White have any isolated pawns? | Yes: e3 | structure |
4kb1r/5p2/p1Np1p2/3Pp3/5P1P/2r5/P1P5/1K1R3R b k - 2 24 | Bh6 | What piece is on c3? | Black Rook | occupancy |
5r1k/1p1r1p1p/p1pN2p1/2P1p3/4P1n1/8/PP3PPP/3RR1K1 b - - 0 21 | Kg8 | What is the material balance in this position? | Equal | material |
rn1qkb1r/1b4pp/p2p4/4n1P1/2BNP3/2p1B3/PPP4P/R2Q1RK1 w - - 4 15 | Ne6 | Is the move from f1 to a3 legal? | No | legality |
8/8/4K3/4B3/1k2B3/8/5PPP/8 w - - 7 59 | c5b4 | What is the material balance in this position? | White is up 9 pawns of material | material |
r1bq1b1r/1p2pQpp/p2k1n2/3Pn3/Np3B2/8/P4PPP/R3KB1R w KQ - 2 16 | Nb2 | Is the move from f2 to h4 legal? | No | legality |
5rk1/1q1n1ppp/p3p3/1p2Pn1Q/3P1B1P/P5P1/NPr2P2/3RR1K1 w - - 1 21 | d5 | Identify any White knight outposts on the board. | None | outposts |
8/4k3/1p2pp2/p1b1Np1p/P4P2/1P1KP1PP/8/8 w - - 0 37 | Nc4 | Does Black have any isolated pawns? | Yes: h5 | structure |
2k4r/2n3pp/4b3/pp2qN2/2p1B1P1/2P2P2/PP4K1/3R3R w - - 0 23 | Ne7+ | Are there any open files in this position? | Yes: d, e | files |
3rrbk1/5pp1/1np2n1p/1p2p3/4P3/1PN2N1P/1BP2PP1/R3R1K1 w - - 0 22 | Ne2 | Is the White king in check? | No | check |
8/6b1/p2k4/2p3pp/2PpP3/3N3P/P4KP1/8 w - - 26 88 | Kg3 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r4r1k/ppq1bpp1/2p1p2p/2PnP2P/1P2N3/P5Q1/3B1PP1/R3R1K1 w - - 1 24 | Nd6 | What piece is on g5? | Empty | occupancy |
8/1p6/p4p1p/2Pk2p1/1P1p2P1/P2K1P1P/8/8 b - - 1 45 | a5 | Are there any open files in this position? | Yes: e | files |
r3k3/4ppbN/2pp2p1/pp6/3P1PP1/1P2P3/P2K4/1n5R w q - 0 25 | a3b1 | Is the White king in check? | Yes | check |
rnb1k2r/pp3ppp/2pP4/4q3/2B2P2/2NP4/PPP3PP/R3K1Nn w Qkq - 0 12 | fxe5 | Is the White king in check? | Yes | check |
3r1rk1/p2nqpnp/1p1b2p1/2p3PP/2PpB2N/1P2P3/PBQ5/2K1R1R1 b - - 0 21 | Nxh5 | Identify any Black knight outposts on the board. | e3 | outposts |
r1bq1rk1/1p1pbppp/p1n2n2/2p1p1B1/P1B1P3/2NP1N2/1PP2PPP/R2Q1RK1 b - - 0 9 | d6 | Are there any open files in this position? | No | files |
4r1k1/1bq1rpbp/p2p1np1/1p6/1Pn1PP2/1RNQ2PP/P1N3BK/2B1R3 b - - 10 21 | Qc8 | What is the material balance in this position? | Equal | material |
r1bqk2r/pp2ppbp/2p2np1/2p5/4P3/2NP1N1P/PPP2PP1/R1BQK2R b KQkq - 2 7 | Nd7 | Does Black have any isolated pawns? | No | structure |
r2qr1k1/pb3pp1/1p3b1p/n1pp4/3P4/2N1PN2/PPQ2PPP/1B1RK2R w K - 0 15 | h4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
6k1/5pp1/p6p/2N5/1pK5/1Qn2P2/PN3qPP/8 b - - 3 40 | a5 | Is the move from c3 to e4 legal? | Yes | legality |
rn2r1k1/pb1nBpbp/1q1P2p1/1p2P3/2p5/2N2N2/PP2B1PP/R2Q1RK1 w - - 0 16 | Rf2 | Does White have any isolated pawns? | No | structure |
rnb1kbnr/pp1Qp2p/5pp1/8/8/2N5/PPP2PPP/R1B1KBNR b KQkq - 0 8 | d4d7 | Is the White king in check? | No | check |
2kr3r/ppq2pb1/2p1p1p1/8/3P3p/P1N1Q2P/1PP2PP1/2KR3R w - - 0 20 | f4 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
6r1/7R/8/8/8/4K3/7p/7k w - - 5 59 | Kf2 | Is the Black king in check? | No | check |
2b1r3/2kq4/p2p2pN/2pP4/2P5/1PQ4p/P4P2/1R4K1 w - - 0 37 | b4 | Does Black have any isolated pawns? | Yes: a6 | structure |
4k2r/1p2bpp1/p2pbn1p/4p3/4P1PP/2Q1BP2/qPP5/2KR1B1R b k - 1 17 | d5 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
3n4/8/p2p1k2/1prP1bp1/4p3/P1P2Q2/1P2BP2/K7 w - - 0 31 | Qh1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
2r3k1/2q1npp1/4p2p/2p5/1Q6/P3PBP1/5P1P/2R3K1 w - - 0 29 | Qc4 | Does Black have any passed pawns? | Yes: c5 | structure |
4r1k1/pb4np/np1pr1p1/2pN4/2P1P3/2PB2B1/P2q2PP/3RR2K w - - 0 28 | Rxd2 | Is the Black king in check? | No | check |
8/7k/2p2r1p/1p3K1P/1PnP4/8/8/6R1 w - - 0 56 | Kxf6 | Does Black have any passed pawns? | No | structure |
r3Rk1r/2p3p1/p2p1b2/1p1P1Q2/8/3P4/PPP3PP/6K1 b - - 0 24 | e1e8 | Is the Black king in check? | Yes | check |
2K5/q6p/8/p1p5/P7/6nk/5Q2/8 b - - 36 74 | c7c8 | What is the material balance in this position? | Black is up 5 pawns of material | material |
2r3n1/1pr1bp1k/p2qp2B/3nN3/3P4/1B5Q/PP3PPP/4R1K1 w - - 3 26 | Bf8+ | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/8/5r2/2k2n2/1p3R2/p7/K4P2/8 b - - 1 67 | b2a2 | What is the material balance in this position? | Black is up 4 pawns of material | material |
8/8/K4R2/2P5/7p/7k/5P2/1r6 w - - 0 62 | Rf4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
8/6p1/4k2P/R7/2p4r/2K5/p7/8 b - - 0 50 | Rxh6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3k2r/pbp2pp1/3b1n2/1p6/3P3p/1B2N1Pq/PP1PQP1P/R1B1NRK1 b kq - 1 16 | Qxh2+ | What piece is on h6? | Empty | occupancy |
8/1R3p2/2p1k3/3p4/qp1P4/4P3/1PQK1P1P/6r1 b - - 1 33 | Qxc2+ | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
5R2/5p1k/3pb1p1/8/7P/2n5/5P2/4K3 b - - 0 45 | Nb5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rnbqkb1r/ppp2pp1/3ppn1p/8/3P3B/8/PPPNPPPP/R2QKBNR w KQkq - 0 5 | e4 | Identify any Black knight outposts on the board. | None | outposts |
8/3k2p1/p3P2p/3K4/5p2/8/1P6/8 b - - 0 51 | e5e6 | Is the Black king in check? | Yes | check |
r4rk1/4qppp/b3p3/p1PnP3/1p2N3/2p3P1/PPQ2PBP/R3R1K1 b - - 1 18 | Rac8 | What piece is on c6? | Empty | occupancy |
1r5k/6pp/p1b5/2Q1P1P1/3p1rq1/8/P3RK2/5R2 w - - 0 37 | f8f4 | Is the White king in check? | Yes | check |
5bk1/4pR1p/2r1P1p1/Rp3P2/4K3/1P6/P7/8 b - - 0 51 | gxf5+ | What is the material balance in this position? | White is up 2 pawns of material | material |
rn2k1nr/p1p1q3/1p2p3/3p3p/1P3P1P/4R3/P2BQ3/bN2K1N1 w kq - 0 21 | c3a1 | Identify any Black knight outposts on the board. | d5, f5 | outposts |
2r2rk1/pbq1bppp/1p2p3/n1p5/2PP4/P2BPN2/1B2QPPP/3R1RK1 w - - 1 16 | d5 | Does Black have any passed pawns? | No | structure |
1k1r4/ppp2Q2/3p4/3P4/4P3/P7/2q2P2/3RK1r1 w - - 1 29 | g2g1 | What is the material balance in this position? | Black is up 5 pawns of material | material |
3rr1k1/1pq1bppp/3ppn2/1Q6/P3PP2/4BB2/2P3PP/1R1R3K b - - 0 21 | Ra8 | Identify any Black knight outposts on the board. | c5 | outposts |
2r2qk1/2P1p2p/3p2p1/3P4/1p6/2b3Pb/P4PB1/2RQ1RK1 b - - 1 10 | Bd7 | What piece is on e5? | Empty | occupancy |
5qk1/4r1p1/pnr1p2p/3p4/2p1P1B1/1P5Q/P4PPP/2R2RK1 w - - 3 24 | Qe3 | Is the move from c1 to e1 legal? | Yes | legality |
1rbq1r1k/2p4n/ppn1p3/2Pp2R1/1P1P1P1p/P3P3/1BQ5/2K4R w - - 0 24 | Qxh7+ | Is the h-file open, semi-open, or closed? | semi-open for White | files |
rnb1kb1r/pp3ppp/1q2pn2/2pp4/3P1B2/2P1P3/PP1N1PPP/R2QKBNR w KQkq - 1 6 | Rb1 | Identify any Black knight outposts on the board. | None | outposts |
r1bqk2r/pp1nppbp/5np1/1B1P4/8/2N2N2/PB3PPP/R2QR1K1 w kq - 2 13 | Ba3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
1k1r2r1/ppp2p1Q/3p4/3P4/2q1P3/P7/2P2PN1/1R2K3 b - - 1 26 | f1e1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rnbk1bnr/ppp2p2/7p/1BqP2N1/3P1ppP/8/PPP2KP1/RNBQR3 b - - 0 10 | Qxb5 | What is the material balance in this position? | Equal | material |
r2qkb1r/pp1n1pp1/2p1pn2/3pN1P1/3P1B2/2N1P3/PPb2P2/R2QKB1R w KQkq - 0 11 | Rxh8 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
rn1qkbnr/ppp1pppp/3p4/8/3P2b1/8/PPPNPPPP/RNBQKB1R b KQkq - 2 3 | d5 | Is the h-file open, semi-open, or closed? | closed | files |
8/p7/7p/3pK3/2kP4/P7/7P/8 w - - 3 42 | a4 | Is the f-file open, semi-open, or closed? | open | files |
r2q1rk1/pb1p1ppp/np2pn2/2b5/2P5/2N2NP1/PPQ1PPBP/R1B2RK1 w - - 4 10 | Rd1 | Does White have any isolated pawns? | No | structure |
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