fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkb1r/pppp1ppp/5n2/4N3/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 3 | d6 | Is the move from f7 to e5 legal? | No | legality |
2k3br/2n4p/4q1p1/pp2p3/2p1B1P1/2P1NP2/PP4KB/3R3R w - - 0 21 | Nf5 | Identify any Black knight outposts on the board. | None | outposts |
5R2/pb2q1k1/1p6/2rPB3/4Q3/1P2R3/P1r3PP/6K1 b - - 0 31 | Kxf8 | What piece is on c3? | Empty | occupancy |
8/7p/6pP/6P1/3k2P1/3b2K1/4p3/5q2 b - - 3 53 | e1=Q+ | Does White have any isolated pawns? | No | structure |
8/8/3p4/1pp3k1/4PpPp/2P2P1K/1P6/8 w - - 0 41 | b3 | Identify any White knight outposts on the board. | f5, h5 | outposts |
r4nk1/1p4r1/p3bB1p/q2p3Q/5P2/2N5/P1P3PP/5R1K w - - 0 28 | f5 | What piece is on h3? | Empty | occupancy |
r4rk1/1bpnqpbp/pP2p1p1/8/2BP4/1QN1P3/1P1N1PPP/R2R2K1 b - - 0 15 | cxb6 | Does White have any isolated pawns? | Yes: b2, b6 | structure |
1k1r4/2q4p/p2bpp2/5p1Q/Ppp1b3/5N1P/1P1R1PP1/4R1K1 w - - 2 26 | Kh1 | Are there any open files in this position? | Yes: d | files |
r1b2rk1/ppp2ppp/3p4/1Bb2qB1/8/2P2Q2/PPP2PPP/R4RK1 w - - 2 13 | Be7 | Does White have any passed pawns? | No | structure |
2rqk2r/pb2bppp/1pn1p3/2p5/3PP3/P1PB1N2/1B3PPP/R2Q1RK1 b k - 2 13 | Bf6 | Identify any Black knight outposts on the board. | a5 | outposts |
r1bqkbnr/pppp1ppp/2n5/4p3/8/1P2P3/PBPP1PPP/RN1QKBNR b KQkq - 0 3 | d5 | Identify any Black knight outposts on the board. | None | outposts |
N4r2/pp1k2p1/3pb3/Q1p3qp/2PnPp2/1P5P/P5B1/R4R1K b - - 5 22 | Rxa8 | Identify any White knight outposts on the board. | None | outposts |
5rk1/5ppp/1R1np3/3p4/2pN4/4PP2/2P3PP/6K1 b - - 6 29 | b5b6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b2r1k/8/p1p1pbQ1/4B3/3P4/PqN5/1P5P/5RK1 w - - 1 28 | Rxf6 | Does White have any isolated pawns? | Yes: d4, h2 | structure |
8/p1k2p2/1p1p1P2/2pP4/4B2n/P1P5/5K2/8 w - - 2 6 | Kg3 | Identify any Black knight outposts on the board. | a5 | outposts |
8/1p4kp/p2b1p2/n3p3/4PPB1/3N2P1/7P/5K2 w - - 3 31 | Bc8 | Does White have any isolated pawns? | No | structure |
r2k4/p4R2/1p6/3K1pr1/5n2/2P5/PP6/8 w - - 2 34 | e6f4 | Is the White king in check? | Yes | check |
rn3rk1/pb1p1pp1/1p3q2/2p5/2P1PpBp/P1PP3Q/5PPP/R1B2RK1 w - - 2 15 | Qf3 | Are there any open files in this position? | No | files |
4k2r/p1pp1ppp/4p3/3P4/3NPP1P/R5P1/4K3/1r3B2 b k - 0 37 | Rb7 | Does Black have any passed pawns? | Yes: a7 | structure |
5r1k/p6p/1p3Pp1/4N1P1/1q1Pp3/6Q1/PP2b3/3R2K1 w - - 2 37 | Qe1 | Identify any White knight outposts on the board. | e5 | outposts |
6k1/6pp/4p1b1/p2rB3/3P4/1P6/6PP/2R3K1 b - - 2 28 | Rd7 | Identify any White knight outposts on the board. | a4, c4, c5, e5 | outposts |
r1br2k1/pp2bppp/3ppn2/nN4B1/N3PP2/8/PPP3PP/2KR1B1R w - - 0 13 | e5 | What is the material balance in this position? | Equal | material |
6k1/5p2/7p/pNb5/P1Bpb2P/1P4P1/4K3/8 w - - 3 39 | g4 | What is the material balance in this position? | Equal | material |
r2q1rk1/pbp1bp1p/1p3np1/3p2B1/2P4Q/3B1N2/PP3PPP/R3R1K1 b - - 1 14 | h6 | What piece is on a2? | White Pawn | occupancy |
r4rk1/1b2qppp/p2p1n2/2p1pP2/1p2P3/1PNP1RNQ/1PP3PP/R5K1 w - - 0 18 | Nd1 | Is the Black king in check? | No | check |
8/3k1r1p/3P4/1r6/4R3/P1p4P/2R5/7K b - - 1 49 | Rb2 | Does Black have any passed pawns? | Yes: c3 | structure |
8/8/3k1p2/p6R/P2K1Nnp/1P6/8/7r w - - 2 51 | Ke4 | Does Black have any passed pawns? | Yes: f6, h4 | structure |
4b3/r3k3/5p1p/2P1p1p1/3pP3/PB1K1P2/6PP/R7 b - - 16 41 | Ra5 | Identify any White knight outposts on the board. | b4, b6, d6 | outposts |
r3rnk1/3n2pp/1ppqp3/p2p4/3PP3/P2B1N1P/1PQ2PP1/R4RK1 b - - 0 18 | e5 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
rn5r/pR5p/2pk2p1/3p4/3n2P1/2N1RP2/PP5P/6K1 b - - 3 24 | e2e3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2kr2r1/ppqbnp2/2n1p3/3pP3/5P2/P1Q3N1/2P3PP/R1B1KB1R b KQ - 2 14 | Rh8 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r3kb1r/n2b1pp1/2p1p2p/1n1pP3/2pP4/p3BN1N/P1B2PPP/1R2qK1R w kq - 0 19 | a5e1 | Is the White king in check? | Yes | check |
2rrqknQ/pp3pp1/2n1p3/3p2N1/1bPP3P/1P2R1P1/PB3P2/2R3K1 w - - 8 25 | Rc2 | Are there any open files in this position? | No | files |
r3qrk1/p1pn2p1/3pp2p/1p2Pp2/2nP1P2/P1P2N2/4QRPP/2B2RK1 b - - 0 18 | Ndb6 | Is the move from e8 to e7 legal? | Yes | legality |
1rbqr1k1/3nppbp/2np2p1/1p1N2B1/4P3/6P1/1PP1NPBP/R1Q2RK1 w - - 4 15 | c3 | Is the move from g2 to h2 legal? | No | legality |
4r3/5Pk1/2p1p3/2PpN2p/3P1K2/8/8/8 w - - 0 61 | fxe8=Q | Does Black have any passed pawns? | Yes: h5 | structure |
2kr1b1r/1pp1qp2/3p1n1p/3Pn1p1/8/2N1B2N/PP3PPP/R2Q1K1R w - - 0 16 | Ng1 | Is the move from e3 to f4 legal? | Yes | legality |
r4rk1/p3q3/7p/3Q1b2/4B1pP/4p1P1/PP4K1/R3B3 b - - 3 31 | d1d5 | Is the Black king in check? | Yes | check |
5r2/4R1p1/p6p/P1p3r1/1p1p4/1P1k4/5PPP/2R1BK2 w - - 11 35 | Re2 | Is the move from e7 to d6 legal? | No | legality |
rnb1kbnr/pp2pppp/8/3q4/3P4/8/PP3PPP/RNBQKBNR b KQkq - 0 5 | Nc6 | Identify any Black knight outposts on the board. | None | outposts |
8/8/p7/8/1P2pk2/5p2/5K2/2q5 w - - 2 57 | e5f4 | What is the material balance in this position? | Black is up 11 pawns of material | material |
rnbq2k1/ppp2pbp/3p2p1/8/1PP1r3/5NP1/P3PPBP/R1BQ1RK1 w - - 0 11 | Rb1 | What is the material balance in this position? | Equal | material |
Q7/p7/1p6/nk6/1p1N1P1P/8/P7/4K3 b - - 2 36 | e2d4 | Is the White king in check? | No | check |
r4rk1/1pq1ppb1/pn1p2p1/5PPb/4P2Q/1BN2N2/PPP3P1/2K4R b - - 0 19 | Bxc3 | Is the Black king in check? | No | check |
r3rqk1/1bp2ppp/1nNb4/p2p4/Pp1PnNQ1/1P2P1P1/1BR2PBP/5RK1 b - - 11 21 | Bc8 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
4rrk1/2p1qpp1/1p1p4/p7/2P4Q/1P3N2/P4PPP/3R2K1 w - - 0 2 | Ng5 | Is the Black king in check? | No | check |
r4qk1/1b3np1/p2p2Q1/3P4/1p1B1P1P/8/PPP5/2K4R w - - 1 26 | Rg1 | Identify any White knight outposts on the board. | g5 | outposts |
2qr3r/B1k2pp1/3b1n1p/1Q6/1PnR3P/5NP1/P4P2/2K2R2 b - - 0 26 | Na3 | Are there any open files in this position? | Yes: c, d, e | files |
r3k3/pp2r1RQ/1npb4/8/2pP4/7P/PP3P2/2K5 b - - 2 27 | Kd7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/2R1k3/3p4/3Kb3/8/8/8/8 b - - 18 56 | c2c7 | Is the Black king in check? | Yes | check |
r1b1k2r/1p3pbp/p2qpp2/2pP4/8/2P1N3/PP3PPP/R2QKB1R b KQkq - 0 13 | b5 | Does White have any passed pawns? | No | structure |
1r1brnk1/1b3p1p/pq1p3Q/1p2p1P1/2n1PB2/PNN4R/1PP3BP/R6K w - - 0 29 | g6 | Identify any White knight outposts on the board. | f6, h6 | outposts |
r3r1k1/2q2pbp/3p1pp1/2nP4/pNB1PQ2/8/1PP2PPP/R3R1K1 b - - 0 19 | f5 | Are there any open files in this position? | No | files |
3q1rkb/3bpp1n/3p2p1/1prBn1B1/p2NP2P/2N2P2/PPPQ4/1K1R3R b - - 1 19 | Bg7 | Does White have any isolated pawns? | Yes: h4 | structure |
rn1q1rk1/pppb2p1/4p3/3pP1bQ/3P4/2N5/PPP2PP1/R3K2R w KQ - 4 16 | Qh7+ | Does Black have any isolated pawns? | Yes: g7 | structure |
rnb2rk1/pp2q1bp/2p3p1/4p3/2P1Pp2/1PQ2NP1/P4PBP/R1B1R1K1 w - - 1 14 | a4 | Identify any Black knight outposts on the board. | None | outposts |
r3k2r/ppq2ppp/4pn2/3p4/5P2/1NP1b2P/PP2Q1P1/2R2RK1 w kq - 0 17 | c5e3 | Is the White king in check? | Yes | check |
R7/5kp1/2rr1p1p/1pNp4/3P1P2/pPP2b2/P2K3P/4R3 b - - 3 38 | g5 | What piece is on b3? | White Pawn | occupancy |
7r/1k3pp1/1b1p4/1r1Pp3/N3P3/5PPp/7P/1R3RK1 w - - 4 33 | d8b6 | Is the White king in check? | Yes | check |
8/8/R7/6p1/1P3pk1/P5r1/4K3/8 b - - 1 44 | Rb3 | What is the material balance in this position? | Equal | material |
2r3k1/4pNb1/1p4P1/p7/P2p4/3Qp3/2P3q1/3KR3 b - - 0 52 | Rc3 | Identify any White knight outposts on the board. | None | outposts |
1n1qkb1r/rp3pp1/p1p1pnp1/3p4/2PP4/1QN1PP2/PP1B2PP/2KR1B1R b k - 1 11 | dxc4 | Is the Black king in check? | No | check |
6k1/pb4pp/4q3/2pn1p2/2B1r3/2PQRP2/P2B3P/6K1 b - - 0 26 | Rxe3 | Is the White king in check? | No | check |
r1bq1rk1/1p2p1b1/n1pp1npp/p4p2/2PP4/1QN1BNP1/PP2PPBP/1R1R2K1 b - - 1 11 | Rb8 | Is the Black king in check? | No | check |
2r2r1k/pp1qb1pn/2p4p/2Ppp2P/1P1P2P1/PN2P3/1B2Q1K1/2R2R2 b - - 1 25 | e4 | What piece is on a7? | Black Pawn | occupancy |
r3kb1r/pp1b1ppp/1qn1p3/1B1pPn2/Q2P4/5N2/PP3PPP/RNB2RK1 b kq - 6 10 | Nfxd4 | What is the material balance in this position? | Equal | material |
rnbqkb1r/pppp1ppp/8/4P3/2P2Bn1/6P1/PP2PP1P/RN1QKBNR b KQkq - 2 5 | g5 | Is the move from h7 to h6 legal? | Yes | legality |
6k1/5p1p/1p2r1p1/1qp5/3p4/P3P1RP/4K1P1/2Q5 w - - 2 38 | c6b5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r4k2/3R4/3p3K/2pP1p2/2P2P2/6P1/7P/8 w - - 1 64 | Kg6 | Is the White king in check? | No | check |
r1q1rbk1/2p2p2/4p1pp/1N1bP3/p2Q1PPB/7P/1PP4K/3RR3 b - - 2 31 | Qb7 | What is the material balance in this position? | Equal | material |
r6r/1bk1p2p/p2qQnpb/2pPB3/2P5/2NB4/P4PPP/4K2R w K - 1 20 | Qxe7+ | Is the Black king in check? | No | check |
1q2k1nr/p1pp1ppp/4p3/N1b1P3/8/1R3QP1/1P2KP1P/2r3NR b k - 1 21 | e1e2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3r1rk1/2q1b1p1/p1n1pn1p/1p2p3/1Pp1P3/2P1N2P/P1B1QPP1/R1B1R1K1 b - b3 0 19 | Nd4 | Identify any White knight outposts on the board. | None | outposts |
r1b1k1r1/pp2np2/2n1p3/3pP3/5B2/P1pB1N2/2P3QP/R2K3R b q - 0 15 | Rxg2 | Does Black have any isolated pawns? | No | structure |
2b5/7p/p2kn1p1/1p1p2P1/1P1N1P2/5K2/P5P1/1B6 w - - 3 37 | Nxe6 | Is the Black king in check? | No | check |
3rr1k1/pbpn1ppp/2p5/8/2P1N3/1P4P1/P4PBP/3R1RK1 w - - 5 21 | Rfe1 | Is the move from f2 to f3 legal? | Yes | legality |
2rqr1k1/2p1bpp1/pn1p1n1p/1p2p3/3PP3/PPN2N1P/2P2PP1/R1BQR1K1 w - - 1 17 | dxe5 | Is the move from f3 to a2 legal? | No | legality |
r3q1k1/pbp3p1/1p2pbN1/3n3Q/3P4/4B3/PPP3PP/5RK1 w - - 7 21 | Rxf6 | Does White have any passed pawns? | No | structure |
1k1r3r/1pqbbpp1/p2ppn2/n5P1/3NP3/2N4P/PPP1Q1B1/2BR1RK1 b - - 0 16 | Nh7 | Does White have any passed pawns? | No | structure |
r2qbrk1/2p1ppb1/p1n3p1/1p4Np/3PQ3/1B2n2P/PPP1NRP1/R5K1 w - - 0 17 | Qxg6 | Identify any Black knight outposts on the board. | None | outposts |
r6r/4nk2/1p2p2p/q2pPp1P/P1bP1Pp1/4Q3/2PB1KP1/R4B1R b - - 0 20 | Qa6 | Are there any open files in this position? | No | files |
rnb1k2r/2q1bppp/p2ppn2/8/1p1NP1P1/1B2BQ2/PPP1NP1P/R3K2R b KQkq - 1 11 | Bb7 | Are there any open files in this position? | No | files |
rn2kbnr/pp3pp1/1qp1p3/3pPb1p/3P1P2/4BN2/PPP3PP/RNQ1KB1R b KQkq - 3 7 | Nh6 | Is the a-file open, semi-open, or closed? | closed | files |
1k3R2/pp2R2p/2p1B3/2P5/8/P5K1/2r3PP/8 b - - 1 37 | f3f8 | Is the Black king in check? | Yes | check |
2b1r1k1/3q2n1/p2p2pQ/2pP2N1/2P3p1/1Pp4P/P4P2/1R4K1 b - - 1 30 | Qf5 | What piece is on c2? | Empty | occupancy |
2r3k1/1n2q2p/r2pp3/P2p2p1/R2Pp3/Q1P1P1P1/3N1P1P/5RK1 b - - 2 24 | Qc7 | What is the material balance in this position? | White is up 1 pawn of material | material |
5Q2/p5pk/4p1q1/7p/8/5P2/P2r2PP/1R2R1K1 w - - 1 3 | g4 | Is the d-file open, semi-open, or closed? | open | files |
2N5/5k2/1p6/1Pb2p2/6p1/6Pp/7P/7K w - - 3 3 | Nxb6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r2k1/1p3ppp/p1b1p3/P1N3q1/1P6/Q6P/2P1B1P1/7K w - - 1 25 | e7g5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
1r3n1k/r3q1p1/7p/p1p1Pp2/2Bp4/1P5Q/P5PP/2R2RK1 w - - 0 27 | Rxf5 | Is the White king in check? | No | check |
5rk1/4bppp/B1Q5/4P3/5P2/3R2P1/7P/1q5K w - - 3 29 | b3b1 | Is the White king in check? | Yes | check |
2r3k1/p2bn1pp/q2b1p2/1p1p4/2rP2PP/3B1P2/PP1BNQ2/RK5R b - - 0 25 | b4 | Is the e-file open, semi-open, or closed? | open | files |
2r1kb1r/1q1b1p1p/3ppP2/p1nN3Q/Pp1NP3/7B/1PP4P/1K2R2R b k - 0 22 | Rg8 | What piece is on d7? | Black Bishop | occupancy |
5rk1/8/3qppPb/2Np1n1p/3P4/1Q2PN2/P6P/6RK b - - 0 29 | Nxe3 | Is the move from d6 to d8 legal? | Yes | legality |
r3k2r/1p1bnpbp/1qn1p1p1/p1ppP3/P2P4/N1P2N2/1PB2PPP/R1BQ1RK1 b kq - 2 11 | cxd4 | What piece is on e7? | Black Knight | occupancy |
5rk1/5pbp/2p2np1/8/1p2Pqb1/1P1QB3/3K4/1N1R1B1R b - - 1 23 | Qf3 | What piece is on b3? | White Pawn | occupancy |
r2r2k1/pp3pp1/7p/3Pp3/2P4n/P1R2P2/5P1P/1B2R1K1 b - - 2 21 | f6 | What piece is on e8? | Empty | occupancy |
2b1q1k1/5p2/2N1pPp1/p2pP1Pp/1p5P/1P1PQ3/P7/1K6 w - - 2 39 | Qb6 | Is the c-file open, semi-open, or closed? | open | files |
8/2K5/rP5R/2k5/8/8/8/8 b - - 8 80 | Kd5 | Is the White king in check? | No | check |
r3k2r/ppq4p/6p1/3Qbb2/2P1p3/2N5/1PP2PPP/R1B2RK1 b kq - 0 17 | b3c4 | What is the material balance in this position? | White is up 1 pawn of material | material |
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