fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
bn3r1k/1q2b1pp/4Bn2/2p1N3/1pp1PP2/4B1P1/1P2Q2P/1N3RK1 w - - 1 21 | Qg2 | Are there any open files in this position? | Yes: a, d | files |
2R3k1/1R6/6n1/1P6/7p/6P1/5PK1/1r6 b - - 1 55 | c4c8 | Is the Black king in check? | Yes | check |
3r4/ppp4p/1bp1k3/4pp2/8/BPP5/P2N1prP/R2K1R2 w - - 0 23 | Ke2 | Identify any Black knight outposts on the board. | e4, f4 | outposts |
3rnrk1/2q1bppp/p1n3b1/1pp1pN2/3pP3/2PP2NP/PPB1QPP1/R1B1R1K1 w - - 2 20 | cxd4 | Is the move from f5 to h6 legal? | Yes | legality |
8/6k1/7p/2p5/2Pp1R2/1P2r2b/2B2K2/8 b - - 2 55 | Be6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r2qk2r/pb1n1pb1/2pBp2p/1p4p1/2pPP3/2N5/PP2BPPP/R2Q1RK1 b kq - 1 13 | a6 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r2qr3/ppp2kb1/2nn4/3pp1pQ/7p/2P1P2P/PP1NNPPB/2KR3R b - - 1 18 | h7h5 | Is the Black king in check? | Yes | check |
2k1rr2/Qbpp2p1/2p5/4p3/P1P1n1q1/1P4Pp/2N2P1P/R4RKB b - - 0 22 | Nc3 | Are there any open files in this position? | No | files |
2r5/5p2/5kp1/R1n5/p1P1P2p/2K5/P4NPP/8 b - - 5 42 | Ke5 | Are there any open files in this position? | Yes: b, d | files |
r1bq1rk1/ppp1ppbp/2np1np1/8/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 b - - 3 7 | e5 | Does White have any passed pawns? | No | structure |
r1bqk2r/pppp1ppp/8/3Pn3/2P5/2n2QPP/P7/R3KB2 w Qkq - 0 16 | g6e5 | What is the material balance in this position? | Black is up 13 pawns of material | material |
1r4k1/1b6/3pp1p1/1B6/PpRK4/1P3P2/6P1/8 w - - 0 34 | Rxb4 | Identify any White knight outposts on the board. | b5, g4 | outposts |
r3kbnr/ppp2ppp/2n5/3P4/3P1pbq/2N2N2/PPP1K1PP/R1BQ1B1R b kq - 2 7 | O-O-O | Is the move from g7 to e5 legal? | No | legality |
r1bq1rk1/pp2nppp/2pp1n2/1Bb1p3/3PP3/2P2N1P/PP3PP1/RNBQ1RK1 w - - 0 9 | dxc5 | Identify any White knight outposts on the board. | None | outposts |
rnbqkbnr/ppp1pp1p/3p2p1/8/3PP3/2N5/PPP2PPP/R1BQKBNR b KQkq - 1 3 | Bg7 | Is the move from h8 to d3 legal? | No | legality |
5K2/8/3p4/3k4/3r4/8/2Q5/8 w - - 34 18 | Ke7 | What is the material balance in this position? | White is up 3 pawns of material | material |
7B/5Q1p/5n2/p4p2/5k1P/1P3P2/3P4/RN2K1NR w KQ - 1 31 | g4f4 | Identify any Black knight outposts on the board. | b4 | outposts |
r1bq1r1k/pp2n1b1/3p3p/1P2p2n/Q3P2P/3P1NP1/P1N3B1/R1B2RK1 b - - 0 20 | Nxg3 | Are there any open files in this position? | Yes: c, f | files |
1r4k1/p2n1p2/7p/2rp2p1/8/2PBP3/P1RK1PPP/7R b - - 4 23 | Ne5 | Identify any Black knight outposts on the board. | c4 | outposts |
r1b2rk1/p1q1npbp/2p3p1/4p1B1/2B1P3/8/PP3PPP/RN1Q1RK1 w - - 4 14 | Nc3 | Is the White king in check? | No | check |
5r1k/2R1n2p/1pPpBr2/1P3P1q/5Q2/5R2/7P/7K b - - 0 38 | Rxe6 | Is the move from f6 to f7 legal? | Yes | legality |
8/6pp/5p2/3k1PP1/5K1P/8/8/8 w - - 0 50 | gxf6 | Does Black have any isolated pawns? | No | structure |
2b2rk1/q4pp1/rn2n2p/p1bpP3/P7/2B2NP1/3NQPBP/R1R3K1 b - - 5 25 | d4 | Are there any open files in this position? | Yes: b, c | files |
r1b2r1k/ppR1BBbp/6p1/8/4P3/5N2/3QKPPP/7q b - - 0 23 | b6 | Does Black have any isolated pawns? | No | structure |
2rr2k1/pbq2p1p/1p1ppbp1/4n3/4PB2/1NP5/PP1Q1PPP/3RRBK1 w - - 6 17 | Bg5 | Does Black have any passed pawns? | No | structure |
8/5k2/5P1p/7P/4NK2/8/8/6r1 b - - 10 68 | g4f4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2q2k1/ppp2ppp/1n1b4/3Pn3/4b2N/1B6/PPP3PP/R3Q1BK w - - 0 20 | Qxe4 | Is the move from g1 to f2 legal? | Yes | legality |
8/2k5/pp6/2p2N1r/2P3P1/1P4P1/P2RR2P/6K1 b - - 1 42 | e1e2 | Identify any White knight outposts on the board. | f4, f5, h4, h5 | outposts |
2r4r/pppb1kp1/2n1pb1q/5p2/2PPP3/BP3QP1/P3N1B1/3R1RK1 b - - 0 21 | g5 | Are there any open files in this position? | Yes: h | files |
8/ppp2p2/4r1pk/4p3/2P5/2PR4/P4PPP/6K1 b - - 0 36 | Rc6 | Are there any open files in this position? | Yes: d | files |
r4rk1/3nbppp/2Q1pn2/p2p4/3P1B2/4PNP1/1q3P1P/R1R2BK1 w - - 0 19 | Rcb1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qkb1r/pppb2pp/8/3p1p2/3Pn3/3B4/PPPN1PPP/R1BQ1RK1 b kq - 1 8 | Qf6 | What piece is on d3? | White Bishop | occupancy |
1n2r1k1/pb3q1p/3pr1p1/p1pN3n/2P1Pp1B/2P2P2/2BQ2PP/3RR2K b - - 1 28 | h6 | Is the move from g8 to d5 legal? | No | legality |
rr1q2k1/5pb1/2Q1p1p1/1nPp3p/3P4/pP2N1P1/P4P1P/B1RR2K1 w - - 0 26 | Ng2 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/1p3k2/q2K3p/7P/6P1/5b2/8 w - - 2 58 | c5f2 | Is the White king in check? | Yes | check |
8/5R2/p1kr3p/8/1P4R1/P1r3KP/6P1/8 w - - 4 47 | c2c3 | Is the White king in check? | Yes | check |
r4k2/6p1/p5Bp/5R1P/1p4P1/8/PPPK4/8 b - - 2 36 | d5f5 | Is the White king in check? | No | check |
rb2rk2/1pp1np1p/1P1p1p2/p1P1p3/3P4/P3PP2/1B3P1P/R3KBR1 w Q - 3 19 | Rd1 | Is the g-file open, semi-open, or closed? | open | files |
8/8/8/7k/3b4/1q6/8/1K6 w - - 5 72 | a4b3 | Is the White king in check? | Yes | check |
rnb1k2r/ppp2ppp/4pn2/3q4/1b1P4/2N5/PPQ1PPPP/R1B1KBNR w KQkq - 0 6 | Nf3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
1k1rq3/1pb3p1/7p/2prP2P/4Q3/4B3/6P1/R4RK1 w - - 1 31 | e6 | What piece is on h5? | White Pawn | occupancy |
4k3/bR6/p3r1p1/P3pp1p/1n6/1N6/1PP2PPP/5K2 w - - 0 30 | Rxb4 | Is the move from b7 to b8 legal? | Yes | legality |
8/ppk2p1p/4pp2/4b3/4P3/PP6/4NPPP/6K1 w - - 1 21 | Nc1 | Is the d-file open, semi-open, or closed? | open | files |
3br2k/1p5r/p3bR2/3pB3/1P6/P2BPQ2/3P1P2/2R1K2q w - - 1 30 | Ke2 | Is the move from e1 to e2 legal? | Yes | legality |
rn1qkb1r/ppp1pppp/5n2/3p1bB1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 2 4 | Bxf6 | What piece is on a6? | Empty | occupancy |
2r1r1k1/8/2R5/3P4/5p2/N1Bb4/5bBP/7K b - - 2 43 | Bc5 | Is the Black king in check? | No | check |
3r2k1/4b1R1/7B/p4p2/Pp2N3/4KP2/1P6/7R b - - 0 39 | g4g7 | Is the White king in check? | No | check |
5r2/4Nppk/3n4/7q/8/7R/5PPP/6K1 w - - 2 4 | Rxh5# | What is the material balance in this position? | Black is up 8 pawns of material | material |
r1b1k2r/pp3ppp/2n1pn2/2b5/2p5/5NP1/PP2PPBP/RNBR2K1 w kq - 0 9 | Nbd2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1r6/6kp/5p2/3Np1p1/2R1P3/1P5P/3NnPP1/6K1 w - - 3 31 | f4e2 | Is the White king in check? | Yes | check |
r2qkb1r/1b3p1p/p3pp2/n7/PppPP3/5N1P/1PB2PP1/R1BQ1RK1 b kq - 1 14 | Qc7 | Are there any open files in this position? | No | files |
r4rk1/pp1bq3/3pp2p/5p2/2PP1N2/2NQ2P1/PP3P1P/4R1K1 b - - 1 22 | Qf6 | Identify any White knight outposts on the board. | h4 | outposts |
r3r1k1/pQpb1p2/3p2p1/2bP3p/5P2/5B2/PPP3PP/R6K b - - 0 18 | a5 | What is the material balance in this position? | White is up 2 pawns of material | material |
r4r1k/pb1p3p/1p3qp1/2p2p2/2BbnQ1P/BPN5/P1PPRPP1/4R1K1 w - - 3 19 | Nd5 | Is the Black king in check? | No | check |
2r2bk1/1b3ppp/1p2p3/1N2q3/1P6/4P2P/5PP1/3RQBK1 w - - 0 26 | Rd4 | Is the move from h3 to a2 legal? | No | legality |
r1b2k2/pp1p2pp/3N4/4P1B1/8/3B1K2/PqP3PP/R7 w - - 2 22 | Rf1 | Does Black have any isolated pawns? | Yes: d7 | structure |
4r1k1/1b1pr2p/6p1/pp3pQ1/2q5/P1P1B2R/1P3PPP/5RK1 b - - 0 30 | Re4 | Are there any open files in this position? | Yes: e | files |
r4rk1/2q1bpp1/2p1p2p/p1P1P3/Np2pP2/3R3P/PPQ3P1/5RK1 w - - 0 20 | Rg3 | Is the move from d3 to d6 legal? | Yes | legality |
6r1/pb1kb1r1/1pp1pR2/3pP2p/3P2qB/5NP1/PPQ2K1P/2R5 b - - 2 26 | Kc7 | What piece is on h4? | White Bishop | occupancy |
r1bq1k1r/pp4b1/3p1nnp/PB1Pp3/4Ppp1/2N5/1P1BNPPP/R2QK2R w KQ - 4 16 | g3 | Does Black have any passed pawns? | No | structure |
1k1r1b1r/p5pp/1B3p2/1P2nb2/8/6P1/1P2PPBP/R1R3K1 b - - 0 20 | Rd7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/pbP5/4k1p1/B1K4p/5P2/8/6PP/8 b - - 0 1 | h4 | Does White have any isolated pawns? | Yes: c7 | structure |
r1b1r2k/1p1n1pbp/p4q2/4pP2/2B2P2/2B1Q3/PPP4P/2KR2R1 b - - 2 19 | Bh6 | Is the move from f6 to e6 legal? | Yes | legality |
r4rk1/2pq1ppp/2n5/1p1pP3/3P4/4B3/P1R1QPPP/5RK1 b - - 0 21 | Na5 | Is the move from d7 to d6 legal? | Yes | legality |
8/3k4/6p1/1p1b3p/1Np2P1P/2n5/8/4RK2 b - - 3 70 | Kd6 | Is the Black king in check? | No | check |
r1bq1rk1/5p1p/p3p1p1/1p1pn1b1/2p5/1B2P1PQ/PPPPKP1P/R1B4R w - - 0 18 | c5c4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2krr3/p1p2p1p/6p1/P2pq3/1Bn1N3/4QP2/1P4PP/R4K1R w - - 1 20 | Qc3 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/pbqpnppp/1p2p3/3n4/3P4/P1PB1N2/1P1N1PPP/R2QR1K1 w - - 2 13 | c4 | Is the move from d2 to h4 legal? | No | legality |
k2r4/1p3p1p/p5p1/2Q2P2/2P5/KP6/P3r2P/8 b - - 2 34 | Rdd2 | Is the e-file open, semi-open, or closed? | open | files |
3r1rk1/1pp2pp1/p1n2n1p/P1p1p3/2P1P3/1PN2N2/2P2PPP/R2R2K1 w - - 1 14 | Rdc1 | What is the material balance in this position? | Equal | material |
2rq1bk1/8/p1R2p2/1pnB1P2/2p5/3p3P/3Q1PPN/6K1 b - - 3 35 | Qxd5 | Identify any White knight outposts on the board. | None | outposts |
6k1/p4rpp/2n1n3/2P1pQ2/8/4PNP1/5P1P/q4BK1 w - - 0 34 | Qxe6 | What piece is on f7? | Black Rook | occupancy |
r1bqkbnr/ppp1nppp/3p4/1B1Pp3/4P3/5N2/PPP2PPP/RNBQK2R b KQkq - 1 5 | f1b5 | Is the Black king in check? | Yes | check |
2r1k2r/2qnbp2/p5pp/1b2p1P1/4Pn1P/2R2N2/PP1N1QB1/1K2B1R1 b k - 2 29 | Bc5 | Are there any open files in this position? | Yes: c, d | files |
r1bbk2r/p4ppp/2p1p3/8/2P5/P1N1P3/1P4PP/2KR1B1R w kq - 0 16 | Be2 | Does Black have any passed pawns? | No | structure |
1r3rk1/5pp1/R2npnp1/1p1p4/3P1qPQ/2P1RN1P/1P1N1PK1/8 b - - 8 24 | b4 | What piece is on d1? | Empty | occupancy |
rnbqk2r/pp2ppbp/3p1np1/8/3NP3/2N1B2P/PPP2PP1/R2QKB1R b KQkq - 0 7 | Nbd7 | Identify any Black knight outposts on the board. | None | outposts |
r3r1k1/p2q2pp/1pb2p2/2P5/3Nn3/1Q5P/PB3PP1/R3R1K1 b - - 0 24 | Bd5 | Is the White king in check? | No | check |
r1bq1rk1/ppp1ppbp/2n2np1/3p4/3P4/3BPN1P/PPPN1PP1/R1BQK2R w KQ - 5 7 | c3 | Is the a-file open, semi-open, or closed? | closed | files |
4rk2/3Qp3/3n3q/3P1pN1/2p1pP1p/4P2K/6R1/8 w - - 4 51 | Rg1 | Does Black have any passed pawns? | Yes: c4, h4 | structure |
1rb2rk1/1p2ppb1/1N3np1/3Pq2p/7P/PQ3P2/1P3BP1/2R1KB1R w K - 5 19 | Be2 | Does White have any isolated pawns? | Yes: d5 | structure |
2kr4/pp1n1p1p/2pbpp2/7q/1P1P2r1/2PQBNP1/P4P1P/R3R2K b - - 0 17 | Rdg8 | Is the move from g4 to g6 legal? | Yes | legality |
r4k1r/2qb1pPp/p2p4/2nP4/1p1N4/5Q2/PPP4P/2K1RB2 b - - 0 21 | Kxg7 | What piece is on f8? | Black King | occupancy |
r2qrbk1/1bp1nppn/p2p3p/1p2p3/P3P1PP/1B1PNN2/1PPB1P2/R2QR1K1 b - - 0 15 | c5 | What piece is on b7? | Black Bishop | occupancy |
r2qk2r/nppbbp2/pn2p1pp/3pP3/3P3P/P1NBBNR1/1PP2PP1/R2QK3 w Qkq - 0 13 | Qc1 | Identify any Black knight outposts on the board. | None | outposts |
8/p7/8/3p4/3k4/P3Q2P/1q1r1PP1/2RR2K1 b - - 9 33 | f3e3 | Is the White king in check? | No | check |
2r5/7k/1p4p1/1Pr1p1p1/2n3Pp/2R4P/5PKB/4R3 w - - 4 39 | Rd1 | What piece is on h7? | Black King | occupancy |
2r2rk1/pp1n1ppp/4p3/q2pPn2/1b1P4/1P1QBN1P/P2N1PP1/R1R3K1 w - - 9 17 | Rc2 | Is the move from c1 to f1 legal? | Yes | legality |
2k4r/ppp3p1/4p2p/4Pp2/8/7P/PPr2PP1/5RK1 b - - 1 22 | Rd8 | Identify any White knight outposts on the board. | None | outposts |
4b1k1/5p2/1p1qp1p1/p2n3p/7P/1NP3P1/PP2QPB1/6K1 w - - 2 33 | Nd2 | Does White have any isolated pawns? | No | structure |
5k2/pp4p1/4pp2/1P6/7P/P3P3/4KP1b/2B5 b - - 0 32 | Bd6 | What piece is on a3? | White Pawn | occupancy |
6k1/pp4p1/5b1p/3p1Q2/2qP4/P1r5/PK1R2PP/3R4 b - - 0 26 | Rxa3 | Is the White king in check? | No | check |
4rr2/1p3qpk/1b1p3p/p2p1p2/2BP3P/P3BQP1/1P3P2/R5K1 w - - 0 26 | Bxd5 | What piece is on d8? | Empty | occupancy |
r2qk2r/1p3pp1/p2bbn1p/3p4/3Q1N2/P1N1P3/1P3PPP/R3KB1R w KQkq - 1 13 | Be2 | Is the move from f4 to h5 legal? | Yes | legality |
r2bRnrk/2q4p/p2p3Q/3P1BP1/1p3P2/8/PPP4P/2K4R b - - 0 25 | Bxg5 | Is the move from d8 to b5 legal? | No | legality |
8/1k1p4/b5R1/2p5/2P1p1P1/1r4B1/7P/4K3 w - - 1 43 | Rxa6 | Does White have any passed pawns? | Yes: g4, h2 | structure |
5bk1/5p2/3p1pPp/4pP2/p1q1P2P/4BQ2/1rP5/4R2K w - - 0 35 | gxf7+ | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r4rk1/ppnq2b1/3p1p1p/2pPpPp1/P1P4P/2N3B1/1PQ2PP1/R3K2R w KQ - 0 21 | f3 | Does Black have any isolated pawns? | No | structure |
r4r2/7p/p2N1n2/6k1/1p1n4/1BN2P2/PPP3PP/2K1R3 w - - 0 24 | Nce4+ | What piece is on d7? | Empty | occupancy |
r1b3k1/ppq3p1/4p2p/2QR4/5rn1/PNN5/1PP3PP/5R1K w - - 0 23 | Nd2 | What piece is on b3? | White Knight | occupancy |
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