fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1qk3r/pb1nb3/3p1p2/1p1P4/1P6/6P1/5PBP/RQBR2K1 b - - 0 25 | Ne5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/8/3k4/1RPP4/4P3/P5Nr/1P1KN2p/8 b - - 0 44 | c4c5 | What is the material balance in this position? | White is up 10 pawns of material | material |
4b2r/p5k1/1pp2n2/8/4p3/P3P1P1/1P2BPK1/R2R4 b - - 1 41 | Nh5 | Identify any Black knight outposts on the board. | None | outposts |
2rq1rk1/pp1bnpp1/4pn1p/4N3/3P4/1BN5/PP2QPPP/2R2RK1 w - - 6 16 | Ne4 | Are there any open files in this position? | Yes: c | files |
2r1r1k1/2p2p2/np4p1/p1q1NnPp/2P2P1P/1PQ5/P2R3K/2B1R3 b - - 7 7 | Nxh4 | What piece is on g5? | White Pawn | occupancy |
r1bq1rk1/5ppp/p1np1b2/3Np3/1pP1P3/5Q2/PPN2PPP/R3KB1R b KQ - 3 14 | Bg5 | What piece is on h1? | White Rook | occupancy |
r3k2r/1p3p2/p2Qb2p/q3b1p1/8/2N5/PPP3PP/2KRR3 w kq - 1 21 | Rxe5 | Does White have any passed pawns? | No | structure |
r1k2r2/p3R2p/2p2Pp1/Np1p4/3P3P/2P5/PP5K/8 w - - 2 6 | f7 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
r1bqkb1r/1p1npppp/p2p1n2/2p5/P3P3/2N2N2/1PPPBPPP/R1BQK2R b KQkq - 1 6 | e5 | Is the d-file open, semi-open, or closed? | closed | files |
r3k2r/1p2b1p1/1nn1bp2/pq2P3/8/5NP1/3NP2P/B1RQR1KB b kq - 0 22 | fxe5 | Is the move from f6 to b1 legal? | No | legality |
4r1k1/pp3rbp/7p/1P1p4/3p4/P2N4/2R2PPP/5RK1 b - - 0 25 | Bf8 | Is the move from e8 to e6 legal? | Yes | legality |
r1b1k2r/ppp2ppp/2p5/2bq4/4n3/3N4/PPPPQPPP/RNB2RK1 b kq - 3 8 | O-O | What is the material balance in this position? | Equal | material |
5rk1/4Rp1p/6p1/8/1K2P3/7P/1Q6/8 b - - 0 37 | f6b2 | What is the material balance in this position? | White is up 8 pawns of material | material |
r1b1k1n1/3pppb1/2p3q1/p7/4P3/1BN1BQ2/PPP1K1P1/R7 w q - 0 17 | Rd1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r1b1k2r/1p1nbppp/1qn1p3/p1ppP3/P2P1P2/2P2N2/1P2N1PP/R1BQKB1R w KQkq - 3 10 | Be3 | Does Black have any passed pawns? | No | structure |
3r2k1/2pqnpp1/1p5p/p2P4/P2pr1P1/2P1N3/1PQ2PP1/3RR1K1 b - - 2 22 | Rf4 | Are there any open files in this position? | Yes: e | files |
8/ppp3kp/7R/2P5/5NnP/8/PP2r1P1/6K1 w - - 0 26 | e3g4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqk1nr/1pp2ppp/p1p5/2b1p3/4P3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 1 6 | Nxe5 | What piece is on d1? | White Queen | occupancy |
r3k2r/ppRb1ppp/3Bp3/1q2P3/8/3R4/P4PPP/3Q2K1 w kq - 5 20 | Be7 | Is the c-file open, semi-open, or closed? | open | files |
2k4r/ppp2pp1/2n1p2p/7P/5NP1/1PP2n2/P2r1K2/R1B4R w - - 1 25 | d1d2 | Is the White king in check? | Yes | check |
2kq3r/p3b3/4Qp1p/8/7N/1PN1P3/1P4bP/2K4R b - - 0 25 | f7e6 | Is the Black king in check? | Yes | check |
3rk3/q3npQ1/2PBp1p1/r2p2Pp/p1R4P/P4P2/1P6/KB6 b - - 0 49 | Rxd6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
3rk3/2rnq3/p6p/Q1p1p1pP/2p1P3/1P1R4/P4PP1/3R2K1 w - - 0 33 | bxc4 | What piece is on d7? | Black Knight | occupancy |
3rk2r/ppp1npp1/8/2p1n3/4P3/2P2PP1/PP3KbR/RN1QN3 b k - 0 18 | Rxh2 | Is the h-file open, semi-open, or closed? | open | files |
2q4r/1k3pp1/5n1p/Q1P5/3r3P/n4NP1/P4P2/2K2R2 w - - 0 30 | Nxd4 | Is the move from c5 to e3 legal? | No | legality |
2b1q1k1/1r4pp/p7/1pQ5/2p5/P1N2P2/1P4PP/5RK1 w - - 0 32 | Ne4 | Is the move from h2 to c7 legal? | No | legality |
rn1qr1k1/ppp1nppp/3b4/3pN3/3P1BQ1/7P/PPP2PP1/RN3RK1 b - - 6 11 | Bxe5 | What is the material balance in this position? | Equal | material |
r4rk1/4q1bp/p2pb3/1p2pp2/8/2PBN3/PP3PPP/R2Q1RK1 w - - 0 18 | Bxf5 | Is the move from h2 to d3 legal? | No | legality |
r4rk1/ppq1npbp/3pb1p1/4p3/4P3/2P1B1P1/PP1QNPBP/R1R3K1 b - - 9 16 | f5 | Are there any open files in this position? | No | files |
1n6/4kpp1/p2p1n1p/Pp1Pp3/1P2P3/4KPPB/7P/2N5 w - - 3 34 | Nd3 | Identify any White knight outposts on the board. | None | outposts |
8/1p1n2p1/p3k2p/3p1p2/PP1K4/2B3P1/7P/8 b - - 4 41 | g5 | Is the move from e6 to d5 legal? | No | legality |
8/6pk/5p2/4p2P/1Q2P3/6P1/P3qPK1/8 b - - 2 73 | Qxa2 | Does White have any isolated pawns? | Yes: a2 | structure |
r1r3k1/p4qpp/Q3bp2/P3p3/n1p1P3/2P1B1P1/5P1P/1R2RBK1 w - - 1 28 | Rb7 | Identify any Black knight outposts on the board. | None | outposts |
r4knr/p4ppp/8/3Ppb2/1nB5/2N1P3/3K1PPP/R5NR b - - 4 15 | b1c3 | Identify any White knight outposts on the board. | c6 | outposts |
k1r5/p5Rp/Pp2pp2/1N6/3PP3/4KPP1/7P/2r5 b - - 0 37 | Rb1 | Identify any Black knight outposts on the board. | a5 | outposts |
8/R3R3/6p1/1pp4p/1k1p3P/PP4P1/1K6/5b2 b - - 0 41 | a2a3 | Is the Black king in check? | Yes | check |
r1b1k2r/ppppqppp/2n5/b2P4/2B5/1Q3N2/P4PPP/R1B2RK1 b kq - 0 11 | Nd8 | What piece is on e2? | Empty | occupancy |
4r3/bp4k1/p6p/Pn1P2p1/2N1PP2/2PK1PP1/8/7R w - - 0 30 | e5 | What piece is on f7? | Empty | occupancy |
r1bq4/pk6/2p5/p1Np4/3P1Q2/5PP1/PPP4P/4R1K1 b - - 1 24 | a4c5 | Is the White king in check? | No | check |
r1bq1rk1/pp1pppbp/2n2np1/8/2BNP3/2N1B3/PPP2PPP/R2QK2R w KQ - 5 8 | Bb3 | Does Black have any isolated pawns? | No | structure |
4k2r/pp2npp1/r3p2p/1q1pP2P/b1pP1Q2/2P5/2P1BPP1/R1BK3R w k - 7 20 | Kd2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkbnr/pp1ppp1p/2p3p1/8/3PP3/8/PPP2PPP/RNBQKBNR w KQkq - 0 3 | g3 | Is the move from d4 to h5 legal? | No | legality |
r1b2rk1/2p1qppp/4p3/1Rp5/2PP2n1/p4NP1/P4PBP/3Q1RK1 b - - 1 18 | Ra6 | What piece is on h8? | Empty | occupancy |
rn3rk1/2pp2pp/1p2n3/p2P1p2/7q/4PP2/P1Q1B1PP/R1B2RK1 b - - 0 18 | Nc5 | Does White have any isolated pawns? | Yes: a2 | structure |
1r4k1/1B1r1ppp/1p2p3/8/1P6/4P3/5PPP/R4RK1 b - - 0 23 | Rdxb7 | Is the move from b8 to c8 legal? | Yes | legality |
rb5k/2qp2pp/4r1n1/1QP2p2/P2B1P2/1NP4P/6P1/R4RK1 w - - 3 26 | g3 | Does White have any passed pawns? | Yes: a4 | structure |
r1q2rk1/pbp3pp/1p1ppb2/2nP4/2P5/6PB/PP2QP1P/R1B1NRK1 b - - 4 16 | Re8 | Is the move from f8 to a5 legal? | No | legality |
1r1q1rbk/6bp/p1np4/1ppNppN1/5P2/P1PP3P/BP1Q2P1/R4RK1 b - - 0 19 | c4 | Are there any open files in this position? | No | files |
r3k2r/ppQnqp1p/6p1/4p3/4n3/5P2/PPP3PP/RNB1K2R w KQkq - 0 12 | Qxb7 | Is the Black king in check? | No | check |
8/8/5k1p/1B4p1/p3p3/8/5K2/8 b - - 0 57 | a3 | What piece is on g5? | Black Pawn | occupancy |
r1b1kb1r/p3pp1p/1pn3p1/2p5/P3P3/2P1BN2/1P3PPP/R2K1B1R w kq - 1 10 | Bb5 | Is the Black king in check? | No | check |
4k3/5R2/4P1q1/7N/5P1K/8/8/8 b - - 2 134 | Qh6 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/ppp3b1/2np1npp/4pp2/1PP5/2NP1NP1/P3PPBP/1RBQ1RK1 w - - 0 10 | Nd5 | Identify any White knight outposts on the board. | None | outposts |
5R2/p5pk/7p/8/PP1b2P1/6P1/2r1B2K/8 w - - 5 41 | h8h7 | Identify any White knight outposts on the board. | a5, c5 | outposts |
8/kp6/1q6/2Q5/p2P2P1/8/2P3K1/8 w - - 0 47 | a5a4 | What is the material balance in this position? | White is up 1 pawn of material | material |
7b/3k4/1K1p4/3Pp1B1/4Pp2/5P1P/8/8 w - - 3 66 | Kb5 | What piece is on e1? | Empty | occupancy |
rnb1kb1r/ppp2p1p/6p1/4P3/4P1n1/2N5/PPP3PP/R1BK1BNR w kq - 1 8 | Nd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2b1k2r/p1pqb1pp/2n1pn2/5p2/1r1P1B2/5NP1/P3PPBP/RNQ2RK1 b k - 2 13 | Nd5 | Does White have any isolated pawns? | Yes: a2 | structure |
r1bqkbnr/ppp2ppp/2n5/4P3/2Pp4/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 5 | g3 | Is the move from f3 to f1 legal? | No | legality |
rnbq1rk1/pp2ppbp/3p1np1/2p5/3P1B2/4PN1P/PPPN1PP1/R2QKB1R w KQ - 0 7 | c3 | Are there any open files in this position? | No | files |
2k4r/1p4pp/p2R4/8/5P2/8/PPP4P/2K5 b - - 0 23 | Re8 | Is the move from h8 to e8 legal? | Yes | legality |
3r4/6r1/2p1pQbk/2P4p/p2P4/P7/5P2/7K w - - 2 50 | Qxd8 | What piece is on e6? | Black Pawn | occupancy |
3r2k1/1p3ppp/8/Pp1p4/8/4P1P1/1P3P1P/2R3K1 w - - 0 26 | Rc7 | Does Black have any isolated pawns? | Yes: b5, b7, d5 | structure |
r1bq1b1r/pp2n1pp/2pk4/3np3/2B3Q1/2NP4/PPP2PPP/R1B1K2R w KQ - 2 11 | O-O | What piece is on e2? | Empty | occupancy |
8/1p5Q/3p2K1/6P1/8/8/8/1k1q4 b - - 1 51 | Ka1 | Does White have any isolated pawns? | Yes: g5 | structure |
rnbqk1nr/pppp1ppp/4p3/8/1bP5/1QN5/PP1PPPPP/R1B1KBNR b KQkq - 3 3 | Nc6 | Is the move from c8 to b1 legal? | No | legality |
2r2rk1/p3bppp/np1ppn2/8/2q2B2/P1N2NP1/1PQ1PPKP/R2R4 w - - 0 16 | Bxd6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bn2k1/p2p2PP/2p1r3/1p2p3/2BqPn2/1P6/P1PP4/1K4R1 b - - 0 5 | Kf7 | Does White have any passed pawns? | Yes: g7, h7 | structure |
r3k2r/pp1bppbp/1q1p1n2/2pP1p2/2P5/2NBP3/PPQ1NPPP/R3K2R b KQkq - 6 11 | e6 | Are there any open files in this position? | No | files |
1rbqk2r/2p2ppp/p1np1n2/1pb1p3/P3P3/1BP2N2/1P1P1PPP/RNBQ1RK1 w k - 0 9 | d4 | What is the material balance in this position? | Equal | material |
rnbqkbnr/1p3ppp/p2pp3/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6 | g4 | Are there any open files in this position? | No | files |
q2r2k1/2n1bpp1/rpb1p2p/2n1P3/2PB1PPP/5N2/3NR1BK/1Q1R4 b - - 0 28 | b5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
1k6/8/8/pQ2Pp2/P4Pp1/1Pp5/6q1/K7 b - - 4 132 | Kc8 | Identify any White knight outposts on the board. | a4, c4, d6, f6 | outposts |
r4rk1/pbq2ppp/1p2pn2/2b1N1B1/8/3B4/PPP1QPPP/3R1RK1 b - - 5 13 | Rfd8 | What piece is on h4? | Empty | occupancy |
2r3r1/2R2pp1/2p3bk/p1Pp3p/3B4/P1P4P/5PPK/4R3 w - - 2 35 | Ree7 | What piece is on a5? | Black Pawn | occupancy |
rnbqkb1r/1p3ppp/p2ppn2/8/2BNP3/2N5/PPP2PPP/R1BQK2R w KQkq - 0 7 | Bb3 | What piece is on b4? | Empty | occupancy |
2r1r1k1/4q1p1/p2pPn1p/1p2pQ2/1P6/1B1P3P/P4PP1/R3R1K1 w - - 1 28 | Rac1 | Identify any White knight outposts on the board. | None | outposts |
2K5/2P1k3/8/8/8/1r6/8/4R3 b - - 1 1 | Kf7 | Does White have any passed pawns? | Yes: c7 | structure |
2b1r2k/7p/2pPpp1P/1pP2p2/p2P1P2/P7/BP1KR3/8 w - - 5 48 | Kc3 | Is the move from d4 to g7 legal? | No | legality |
4r2r/1bpQbk2/p1q1pp2/5p1p/7P/2P2NN1/PP3PP1/3RR1K1 b - - 0 21 | Rd8 | Is the move from h5 to c2 legal? | No | legality |
r3r1kb/ppqb1pnp/1np1p1p1/6P1/3PpP2/1PPB2N1/PBQN4/2K3RR w - - 0 21 | d5e4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1rbq1rk1/2p1bppp/2n2n2/3pp3/4P3/1BPP1N1P/3N1PP1/R1BQR1K1 b - - 1 14 | dxe4 | Does Black have any isolated pawns? | No | structure |
r1bq1rk1/pppnbpp1/4pn1p/3p4/2PP1B2/2N1PN2/PP3PPP/R2QKB1R w KQ - 1 8 | g4 | Is the move from h2 to d8 legal? | No | legality |
4k3/8/4Pp2/2B2K2/8/8/1b4P1/8 b - - 8 50 | Bc3 | Is the move from f6 to g7 legal? | No | legality |
1r1q1rbk/6bp/p2p4/3N1pN1/4pP1P/PBP5/1P1Q2P1/R4RK1 b - - 0 24 | Rxb3 | What is the material balance in this position? | White is up 4 pawns of material | material |
2r5/1k1r1bp1/2pp1p1p/qp1NpP2/3bP1PP/1P1P1B2/P1R1Q3/1KR5 b - - 0 33 | Rdd8 | Is the move from e5 to g7 legal? | No | legality |
r2q1rk1/1b1nbppp/p3pn2/1pppN3/3P1BP1/2PBPQ1P/PP1N1P2/3RK2R b K - 1 12 | Qb6 | Is the White king in check? | No | check |
r2q1rk1/pb2bppp/1p2p3/n7/3P3P/2PB1N2/P4PP1/R1BQR1K1 w - - 1 14 | Ng5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/1pq1bppp/p1npbn2/4p3/P3PP2/1NN1B3/1PP1B1PP/R2Q1R1K w - - 1 13 | Qe1 | Is the move from a4 to g1 legal? | No | legality |
rnb1k2r/1pq1pp1p/p2p1np1/2pP4/2N1P3/3B4/P1P2PPP/1RBQ1RK1 w kq - 2 12 | Nb6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2n5/4qk2/4pNnQ/pb1pP3/1p1P2P1/1P4K1/P4P2/8 w - - 2 36 | Qh7+ | What piece is on h5? | Empty | occupancy |
r2q2nr/pp3ppp/4bk2/1B1p2B1/3P4/2P3Q1/P4PPP/R3R1K1 b - - 13 18 | Kf5 | Identify any White knight outposts on the board. | d4 | outposts |
r3k3/pp1b4/4pr1p/2Rp2p1/1P1n2P1/P6R/5PBP/2B1K3 w q - 2 24 | Bb2 | What piece is on g7? | Empty | occupancy |
8/p4k1p/B1b5/2PpP1Pp/3K4/8/8/8 b - - 0 39 | h4 | Are there any open files in this position? | Yes: b, f | files |
2r3k1/6qp/p2p4/2P1p2Q/8/8/P4PP1/4R1K1 b - - 0 32 | dxc5 | What piece is on f3? | Empty | occupancy |
2r1r1k1/1b3pbp/pq1p1np1/1p1P4/1Pn1P1P1/1QNR3P/4NPB1/1RB3K1 b - - 0 19 | Nd7 | Does White have any isolated pawns? | Yes: b4 | structure |
r1b3k1/pp5p/2pbp3/3p4/2PPB2n/PP2P1p1/2Q2R1q/1NBR1K2 b - - 0 29 | gxf2 | Identify any Black knight outposts on the board. | None | outposts |
rnb2q2/p3k1NQ/2p1p3/1p6/3P4/P7/5PPP/R4RK1 w - - 1 24 | Rfe1 | What is the material balance in this position? | White is up 3 pawns of material | material |
r4nk1/6b1/2qpb3/1p2pRP1/1P2P3/2PBB2Q/8/1N5K b - - 0 40 | Ng6 | Does White have any isolated pawns? | Yes: e4, g5 | structure |
4r1k1/1R1br1b1/pR1p1nq1/P1pP1p2/5PPp/4BB2/3Q1NP1/3N2K1 b - - 0 29 | fxg4 | What is the material balance in this position? | White is up 3 pawns of material | material |
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