fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1r4k1/3Qnpp1/1b1p3p/1p2q2P/2pNP3/2P1N3/1P3PP1/4R1K1 w - - 7 30 | g3 | What piece is on a2? | Empty | occupancy |
r6Q/1bp1kp1p/p7/1p1pP1q1/4n3/1B2b3/PPP2PPP/RN3RK1 w - - 1 14 | Qxh7 | Is the move from b2 to g3 legal? | No | legality |
8/r4kpp/P4p2/1P6/2R2K2/5P2/6PP/8 b - - 0 44 | b4b5 | What is the material balance in this position? | White is up 2 pawns of material | material |
4r1k1/1p3rbp/p6p/1P1p4/3p4/P2N4/2R2PPP/5RK1 w - - 0 26 | a4 | Identify any Black knight outposts on the board. | c3, c4 | outposts |
rn2qrk1/p2n1p1p/bppbp1p1/6PP/1P6/2NBPN2/PBQP1P2/R3K2R w KQ - 3 15 | Be4 | What piece is on b1? | Empty | occupancy |
r2q1rk1/p1pp1ppp/bp2pn2/n5B1/1bPPP3/2NB2N1/PP3PPP/R2QK2R b KQ - 4 9 | h6 | What piece is on a2? | White Pawn | occupancy |
1rbq1rk1/p4pb1/3p2p1/1NpPn2n/4PP2/4B3/PP1QBNKP/R4R2 b - - 0 18 | f5 | Does Black have any isolated pawns? | Yes: a7 | structure |
3r2k1/2R3pp/3n1p2/2Bp4/8/6P1/1P3P1P/5K2 w - - 6 39 | b4 | Is the move from c7 to b7 legal? | Yes | legality |
rn2kb1r/pbpp1p1p/5n2/1B4pq/3PPp2/2N2N2/PPP3PP/R1BQ1K1R w kq - 1 9 | h4 | Does White have any isolated pawns? | No | structure |
r1bq1rk1/1ppnppbp/p2p1np1/8/2PPP3/2N1BP2/PP2N1PP/R2QKB1R w KQ - 2 8 | Qd2 | Is the move from b2 to c6 legal? | No | legality |
2r3k1/1bq2ppp/p2bp3/6PP/nP2p3/3P1P1Q/P3N3/K1BR3R w - - 0 25 | fxe4 | Is the move from c1 to d2 legal? | Yes | legality |
r4rk1/3bppbp/pn1p2p1/1pp5/2nPP3/3R1P2/PP2N1PP/1KQ2B1R w - - 4 16 | b3 | Are there any open files in this position? | No | files |
r3kb1r/1p2q1pp/p1nppn2/4p1N1/4P3/2N1B3/PPP2PPP/R2QK2R w KQkq - 2 11 | Qf3 | Are there any open files in this position? | No | files |
rn1qkb1r/1p2ppp1/p1p2n1p/3p4/2PP4/2NbPN2/PP3PPP/R1BQK2R w KQkq - 0 8 | Qxd3 | Is the move from c1 to h5 legal? | No | legality |
2bqr1k1/p4pb1/3p2p1/2pPn2n/1r2P2p/P1N1BP1P/1P1QBKP1/R4N1R b - - 0 19 | Rd4 | Is the move from b4 to a4 legal? | Yes | legality |
4r1r1/5p2/p1k1b3/1p1p1p2/2qB1P2/2P5/P4QPP/R3R2K b - - 6 26 | Bd7 | Is the move from c6 to h2 legal? | No | legality |
r3k2r/1p1b1pp1/p1nbpn1p/q7/5P1B/2N5/PPP3PP/2KRQB1R w kq - 0 14 | Rxd6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
5rk1/p1q1b1pp/npp1p3/4N3/2PPNBp1/6P1/PP3P1P/R2R2K1 b - - 1 17 | Rf5 | Identify any Black knight outposts on the board. | None | outposts |
rn1q2k1/pp2rpb1/4bn1p/1B4p1/3P4/1QN1B3/PP2NPPP/R3K2R w KQ - 0 14 | d5 | Is the Black king in check? | No | check |
rn2k1nr/pb1p1pp1/1p3q2/2p1p2p/2P1P3/P1PP2Q1/4BPPP/R1B1K1NR b KQkq - 1 9 | h4 | What piece is on f8? | Empty | occupancy |
N1bq1b1r/pp3Q1p/3k1p2/3Bp3/4P3/4p3/PPn2PPP/R3K2R w KQ - 0 18 | Ke2 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r5/p1q2kb1/2bp1n2/4p3/2r1PN1P/2p1BP2/PPP3Q1/1K1R3R w - - 0 23 | Rhg1 | Is the White king in check? | No | check |
3rk1r1/1p5p/p1n1p3/2B2p2/P2Pp3/4K1P1/5P1P/2R4R b - - 0 23 | e5 | Does Black have any isolated pawns? | Yes: h7 | structure |
2n1qrk1/1R3pp1/4b2p/b2p2P1/2pP4/p1P2QB1/P1B2PP1/5NK1 b - - 0 27 | hxg5 | Does Black have any isolated pawns? | Yes: a3 | structure |
k2r3r/pp3bpp/N2b1p2/1p6/P1n2B2/6P1/4PPBP/R1R3K1 w - - 0 24 | axb5 | Identify any Black knight outposts on the board. | a4, c4 | outposts |
8/4kpp1/1p5r/p1b1Pp2/3p1P2/2pR2P1/2P3KP/R7 b - - 2 41 | Rh8 | What piece is on c3? | Black Pawn | occupancy |
2R5/2p2pk1/4nnpp/1r2p3/1pN1P3/4NPP1/1PP2K1P/8 w - - 5 34 | Ke2 | Does Black have any isolated pawns? | No | structure |
rnbqkbnr/pppp2pp/4p3/8/3P2p1/3Q4/PPP1PP1P/RNB1KBNR w KQkq - 0 4 | h3 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r5k1/pp2p2p/2np2p1/3N1q2/2Pn4/BP1r4/P4PPP/RQ3RK1 b - - 6 19 | b5 | What piece is on e6? | Empty | occupancy |
3r4/1pp3kn/p2r2p1/P1pNpP1p/2Pn3P/1P3P2/2P2KP1/R2RN3 b - - 0 22 | gxf5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2kr3/pbn3Q1/1n1b1p2/1pp1q3/8/P1N3P1/1P3PBP/R2R2K1 w - - 0 24 | Bxb7 | What piece is on d3? | Empty | occupancy |
r4rk1/1p2b1p1/p1qppn1p/1N6/1pP1P3/2N5/P1Q2PPP/R3R1K1 b - - 1 17 | a4c2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr4/1pp2ppp/pr3n2/8/8/5PP1/P1Pb2QP/3K3R b - - 1 27 | Bg5+ | What piece is on c2? | White Pawn | occupancy |
2r2nr1/kbb5/1p1qpp2/p4p1p/P1PB4/2QN1P2/1P4PP/3RRBK1 b - - 2 29 | Bxf3 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
3q1rk1/p1ppnpbp/b5p1/8/1rn1P3/PBNQ1N2/1PPB1PPP/2KR3R b - - 0 14 | Nxd2 | What piece is on c6? | Empty | occupancy |
r1bk3r/pp5p/2nN4/3N2qn/2Kbppp1/P7/1PP1B1P1/R1BQ3R b - - 1 17 | Qxd5+ | Does Black have any passed pawns? | Yes: e4 | structure |
rnbqk1nr/ppp2pbp/6p1/3pp3/8/5NP1/PPPPPPBP/RNBQ1RK1 w kq - 0 5 | d3 | Is the f-file open, semi-open, or closed? | closed | files |
rn1qkbnr/1p3ppp/p3p1b1/2ppP3/3P4/2P2N2/PP2BPPP/RNBQ1RK1 w kq - 0 8 | Be3 | Is the move from g1 to d5 legal? | No | legality |
8/5kp1/2q1pp2/1bP3P1/1Q1Pp3/4P3/r2K1PP1/7R w - - 1 29 | a3a2 | Is the Black king in check? | No | check |
rn2r1k1/ppb2p1p/2pq2p1/3p4/1P1Pn1P1/P1N1PN1P/1B1QB3/R3K2R w KQ - 3 17 | f6e4 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1b2rk1/p1p2ppp/2Bb1n2/q7/2P5/2N5/PP3PPP/R1BQK2R b KQ - 0 11 | Rb8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b2rk1/1p3pp1/2pp1qnp/p3p3/4P3/1BPPNNPn/PP2QP1P/R4R1K w - - 0 18 | a4 | Is the move from f3 to e1 legal? | Yes | legality |
4kr2/2qn1p1p/p2pp3/6P1/2p1b3/1NQ5/P1P3PP/1K1R1B2 b - - 0 21 | d5 | Does Black have any isolated pawns? | Yes: a6, h7 | structure |
5b2/2k5/5p1p/pKp1pNpP/Pp2P1P1/1P3P2/8/8 w - - 2 7 | Ne3 | Identify any Black knight outposts on the board. | None | outposts |
2n3k1/q4pp1/1p2p2p/4N3/n7/4PBP1/5P1P/1Q4K1 w - - 0 33 | Qd1 | Does Black have any isolated pawns? | Yes: b6 | structure |
r4rk1/p2qbp1p/1p2pp2/n7/2p1N3/2Q1PN2/PP3PPP/2R2RK1 b - - 1 15 | e5 | Does White have any passed pawns? | No | structure |
1r6/5pk1/4n1p1/7p/p1P1P3/2K5/P2R2PP/3N4 w - - 8 40 | Rb2 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
rn3knr/5ppp/2p5/p6P/3Ppp2/2P2P2/q4PK1/1q6 b - - 3 24 | f1g2 | What is the material balance in this position? | Black is up 36 pawns of material | material |
rn3rk1/1bq1bppp/pp1ppn2/8/2PNP3/P1N1BP2/1P1QB1PP/R4RK1 b - - 5 12 | Nbd7 | Are there any open files in this position? | No | files |
r4r1k/pppqn1b1/3P1n1p/3Pp3/4P1p1/2NNB2P/PP4P1/2RQ1RK1 b - - 0 19 | cxd6 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/6q1/8/8/2kb1K2/8/8/8 b - - 3 53 | g5f4 | What is the material balance in this position? | Black is up 12 pawns of material | material |
r4n2/5pk1/1p3Np1/1P1P2P1/8/p3P3/8/R5K1 b - - 0 33 | a2 | Does Black have any isolated pawns? | No | structure |
5q2/2p3rk/3pp2p/1p2p2n/1P2P2P/2P1NPP1/5Q1K/6R1 b - - 38 67 | Qf6 | Does Black have any isolated pawns? | Yes: h6 | structure |
r2r2k1/pp3p2/2n2P2/5Q2/3p1P2/4pR2/P5PP/6K1 w - - 1 25 | Qc5 | Is the move from g1 to e7 legal? | No | legality |
2r4k/2p3pp/p4p2/1q6/5P2/2Q5/1r4PP/2R1R2K b - - 6 38 | Re2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3q3r/ppk2pQP/4bP2/3p4/P1pP4/2P5/2PK1P2/4R3 b - - 4 36 | Bf5 | Does Black have any isolated pawns? | Yes: f7 | structure |
3r1b1r/p1q5/2p3k1/4Pppp/2Np1p2/1P5P/P2P2P1/1Q2RRK1 w - - 0 25 | h4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk1nr/pp2bppp/2n1p3/2ppP3/3P4/2P2N2/PP3PPP/R1BQKBNR b KQkq - 0 6 | Qb6 | Identify any White knight outposts on the board. | None | outposts |
8/1p2q1pk/p4pbp/P1Bp2n1/1P6/5PP1/4PKBP/8 w - - 0 39 | Bxe7 | What is the material balance in this position? | Black is up 9 pawns of material | material |
2rqr1k1/2p1bpp1/pn1p1n1p/1p2p3/3PP3/PPN2N1P/1BP2PP1/R2QR1K1 b - - 2 17 | Bf8 | Is the move from b6 to e8 legal? | No | legality |
1rb2rk1/1p1np2p/p2p2p1/q1pP1P2/2P2Bn1/1QP2N2/P3BPPP/1R3RK1 b - - 0 14 | Rxf5 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/3k1p1p/3p4/5B2/2Q5/8/P1P2PPP/R5K1 b - - 0 26 | d3f5 | Is the Black king in check? | Yes | check |
8/p1p1k3/8/r1N4r/2PP4/4R1KP/8/8 b - - 6 49 | f3e3 | Is the Black king in check? | Yes | check |
r2QN2r/b3B1pp/1n6/4p2k/1P2P1nN/8/P4PPP/5RK1 b - - 0 27 | Rxd8 | Is the move from a7 to a3 legal? | No | legality |
5rk1/6pb/1p5p/2p5/1p2r1B1/6PP/P1PR3K/2R5 w - - 0 34 | c3 | Does Black have any isolated pawns? | No | structure |
r1bqkb1r/pp3ppp/2n2n2/2pp4/8/1P2PN2/PB1P1PPP/RN1QKB1R w KQkq - 0 7 | Bb5 | Is the move from e1 to a8 legal? | No | legality |
rn1qk2r/4ppbp/b2p1np1/2pP4/8/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 1 9 | h4 | Does White have any passed pawns? | Yes: a2 | structure |
rnbqkb1r/pp1p1ppp/4p3/2pnP3/3P4/2P2N2/PP3PPP/RNBQKB1R b KQkq - 2 5 | Nc6 | Is the move from d5 to f4 legal? | Yes | legality |
r3k2r/p3bpp1/2p3q1/2ppp1P1/5P1p/2PP2BP/PP4Q1/RN3RK1 b kq - 0 19 | f2g3 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1b1k1nr/pppp1ppp/2n5/4P3/1b3B2/2Q2N2/PqP1PPPP/RN2KB1R w KQkq - 2 7 | Bd2 | What piece is on a2? | White Pawn | occupancy |
1q4k1/p1rr1pp1/1p1Np2p/3nP3/1P4R1/P4QP1/5P1P/3R2K1 w - - 5 31 | Rxd5 | Does White have any isolated pawns? | No | structure |
3r1k2/5pp1/p6p/1p1p1q2/3R3P/P1P3P1/1P1Q1PK1/8 w - - 3 38 | a4 | Is the e-file open, semi-open, or closed? | open | files |
rn1qkb1r/p4ppp/2p1pnb1/1P1p4/3P3N/1QN1PP2/PP4PP/R1B1KB1R b KQkq - 0 9 | c5 | Is the White king in check? | No | check |
6k1/7p/6p1/p4p2/3pbP2/3K2P1/2B4P/8 w - - 2 40 | d5e4 | Is the White king in check? | Yes | check |
8/p4p2/1pp2kP1/2p5/2P2K1p/1P5P/P5P1/8 b - - 0 38 | fxg6 | Is the White king in check? | No | check |
8/3R3k/1p4p1/7p/K7/P7/1r6/8 b - - 1 60 | Kh6 | Is the move from h7 to h6 legal? | Yes | legality |
5k2/1p1rnp1p/p3pp2/2R5/6P1/1P1NP3/P3KP1P/8 w - - 5 25 | Nf4 | Does Black have any isolated pawns? | Yes: h7 | structure |
6k1/2Rn1r2/pp6/3p1p1p/3P2pP/3N4/PP3PP1/5K2 b - - 1 31 | f4 | Is the e-file open, semi-open, or closed? | open | files |
r7/1n3Qpk/3p2Nb/4p3/1P2P2P/3r4/q4PP1/5RK1 w - - 1 33 | Nf8+ | Is the move from e4 to h6 legal? | No | legality |
r7/4p1kp/3pPpB1/q7/p5Q1/6RP/1P3PP1/q5K1 w - - 0 31 | Bb1+ | Identify any White knight outposts on the board. | None | outposts |
r7/6p1/1b6/p1pk3P/R7/1NP2K2/8/8 w - - 0 54 | Rg4 | Is the move from a4 to g6 legal? | No | legality |
8/6k1/1R3p1p/4b1p1/3p2P1/8/3r1PKP/4R3 b - - 0 36 | Kg6 | Does Black have any isolated pawns? | Yes: d4 | structure |
6k1/pp2r1b1/4p1Q1/1q1pPP2/3P2p1/4BN2/1r6/6RK w - - 1 34 | f6 | Is the move from h1 to f2 legal? | No | legality |
4r3/p7/1pR4R/1P1kp1r1/3p2b1/P4P2/1B2K3/8 b - - 0 37 | Be6 | Does White have any isolated pawns? | Yes: f3 | structure |
3r4/1p3krp/pqp1p1p1/4PpQP/3P4/3R2R1/1P3PP1/6K1 b - - 2 36 | Kg8 | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/5ppp/1R6/8/4P3/5R2/5P1P/6K1 b - - 0 27 | Rxe4 | Identify any White knight outposts on the board. | d5 | outposts |
r4rk1/p1p1b1pp/2R2n2/4pp2/8/2NPBPPq/PP2P3/4QRK1 b - - 0 18 | Nh5 | Is the White king in check? | No | check |
4kb1r/1bqn1ppp/p2ppn2/1p4B1/4PP2/1NPB3Q/P1P3PP/2KRR3 w k - 1 15 | Kb1 | What piece is on f7? | Black Pawn | occupancy |
8/7r/pk1brp2/1p2p3/1P6/P4RB1/1KP1R2P/8 w - - 3 36 | Kb3 | Does White have any passed pawns? | Yes: h2 | structure |
r4rk1/pppq2pp/nn2p1p1/3pP1B1/3P4/bPP2N1P/P1Q1NPP1/R3R1K1 b - - 4 18 | Rac8 | Is the move from c7 to a8 legal? | No | legality |
4B2r/5Pb1/3p4/3PP3/4K2p/6kP/8/8 b - - 2 79 | d4e4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2kr1bnr/pp1n2p1/2p3N1/q2pP1pp/3P2b1/P1NB2P1/2PK1Q2/RR6 w - - 4 18 | Nxh8 | Identify any White knight outposts on the board. | None | outposts |
8/5pkp/4n1p1/8/2R5/4P2P/5PP1/6K1 b - - 2 33 | c8c4 | What is the material balance in this position? | White is up 3 pawns of material | material |
7Q/6p1/2p5/1p6/3Pqk1p/7P/PP3P2/6K1 b - - 6 34 | Qg6+ | Is the g-file open, semi-open, or closed? | semi-open for White | files |
br3rk1/2q2pbp/p1nppnp1/p1p3B1/2P1P3/RNNP4/1P1QBPPP/5RK1 w - - 8 18 | Rfa1 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
r1qr2k1/p3bppp/1p2pn2/4N3/2P5/P1BB4/1PQ2PbP/2KRR3 w - - 0 18 | Re3 | What piece is on a7? | Black Pawn | occupancy |
r1bqk2r/ppp2ppp/2n5/3p4/3Nn3/2P2B2/P1P2PPP/R1BQ1RK1 w kq - 0 10 | Ba3 | Identify any White knight outposts on the board. | None | outposts |
4r3/1p3kpp/p1n1bp2/2B1p3/6P1/2PP3P/P4PB1/1R4K1 b - - 4 22 | b5 | What is the material balance in this position? | Equal | material |
r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/PB1P1N2/1PP2PPP/RNBQ1RK1 w - - 1 9 | Nc3 | Identify any Black knight outposts on the board. | None | outposts |
1r3rk1/1b1p1ppp/p1pN1Q2/2P5/8/8/PP2BPPP/R5K1 b - - 0 26 | gxf6 | What is the material balance in this position? | White is up 7 pawns of material | material |
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