fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bq1rk1/pp2ppBp/3p1np1/2p5/3nP3/2NP2P1/PPPQ1PBP/R3K1NR b KQ - 0 9 | h6g7 | What is the material balance in this position? | White is up 3 pawns of material | material |
rnbqk1nr/ppppppbp/6p1/8/3PP3/4B3/PPP2PPP/RN1QKBNR b KQkq - 2 3 | b6 | What piece is on c7? | Black Pawn | occupancy |
r1b1k1nr/ppp3pp/2n2q2/1B1pNP2/1b1P4/8/PP3PPP/RNBQ1K1R w kq - 2 10 | Qa4 | What piece is on h8? | Black Rook | occupancy |
8/2pk4/3bp3/R7/4K3/4B3/Pr6/8 w - - 3 34 | Bd4 | What piece is on d7? | Black King | occupancy |
r3k2r/pppq1pb1/2npb1pp/4p2n/2B1P2Q/2NPBP2/PPP1N1PP/R3K2R b KQkq - 1 12 | Na5 | What piece is on f8? | Empty | occupancy |
8/6k1/8/4pP2/3PK2r/2N5/PPP5/R1B5 w - - 3 29 | h3h4 | Is the White king in check? | Yes | check |
r4r2/p4ppk/2p1b2p/1qPp4/5B2/P4Q1P/1P2RPP1/4R1K1 w - - 3 26 | Qg3 | Identify any White knight outposts on the board. | None | outposts |
4b2r/2Q4p/B4pkn/2p1p3/8/3P3N/PPP3PP/2KR1R2 w - - 1 19 | f7g6 | What is the material balance in this position? | White is up 16 pawns of material | material |
2r1r1k1/p4pb1/2p3p1/1pP2Np1/1P2p3/P1Q2nP1/5PBP/3RR1K1 w - - 1 25 | e5f3 | What is the material balance in this position? | White is up 8 pawns of material | material |
r1bqkb1r/ppp2ppp/2np4/3n4/8/5N2/PPPBQPPP/RN2KB1R b KQkq - 1 7 | d1e2 | Is the White king in check? | No | check |
1r3rk1/3nnppp/3b1q2/RPp5/2B5/4PN2/1P1P1PPP/2BQ1RK1 b - - 4 16 | e1g1 | What is the material balance in this position? | White is up 3 pawns of material | material |
7k/Q7/5nRp/p2q1P2/P5P1/7K/5P2/8 b - - 0 42 | Qh1+ | Identify any Black knight outposts on the board. | None | outposts |
2rrn1k1/ppqnbpp1/2p1p1bp/2P1P3/1PN5/PQ3NP1/1B3P1P/R3RBK1 b - - 2 20 | b6 | Identify any White knight outposts on the board. | None | outposts |
r2qkb1r/1p1b1p2/p1nppn1p/6P1/3NP2B/2N5/PPPQ2PP/2KR1B1R b kq - 0 11 | Ng4 | Are there any open files in this position? | No | files |
r4rk1/5pp1/2pqb2p/3p4/3P4/2NB1NP1/5QP1/5RK1 w - - 1 23 | Ne2 | Identify any Black knight outposts on the board. | b5, d5, g5 | outposts |
r4r2/1p1bqpk1/4p1pp/3pP3/p1nN3P/2P2NQ1/PP3PP1/1R2R1K1 w - - 2 22 | Ne2 | What is the material balance in this position? | Equal | material |
r1b2rk1/3pqppp/p1p1p3/2P5/Nb1BnP2/8/PP2B1PP/R2Q1RK1 w - - 1 15 | Qc2 | What piece is on f4? | White Pawn | occupancy |
r6r/p3R1b1/1pnP1k1p/2p5/3P1q1p/2P5/P1Q2PPP/5RK1 w - - 3 23 | Re3 | Does White have any isolated pawns? | Yes: a2 | structure |
1r2kbnr/p1qn1ppp/2p1p3/1p6/Q7/2BP1BP1/P2NPP1P/1R2K2R w Kk - 0 15 | Qc2 | Identify any Black knight outposts on the board. | a4 | outposts |
r3qk2/pbp2rbQ/1p4B1/3pP3/3P4/4B3/PPP4P/R6K w - - 7 25 | Bh6 | Is the f-file open, semi-open, or closed? | open | files |
4r1k1/1p1n3p/p1b3p1/3pp3/1P3r2/P2B1P2/2P1R1PP/3NR1K1 b - - 5 26 | b5 | Is the move from g6 to d3 legal? | No | legality |
8/5Rk1/8/p2Np3/4P3/2KPn3/r7/8 b - - 5 52 | f6f7 | Is the Black king in check? | Yes | check |
r1b1k2r/1p3ppp/p2ppn2/2q5/4P3/2NB4/PPP2PPP/R2Q1R1K w kq - 0 12 | Na4 | What is the material balance in this position? | Equal | material |
r4k2/1N2bppp/r1p1pn2/8/p1P5/5PP1/P2BP2P/1R1R2K1 b - - 0 20 | Ke8 | Does Black have any passed pawns? | No | structure |
4r3/1bq1Pkb1/p5pp/1pBp1p2/8/1Q1N1P2/PP4PP/4R1K1 w Q - 4 3 | f4 | What piece is on h4? | Empty | occupancy |
rn1qk2r/p2bnppp/1p2p3/1BppP3/3P4/P1P2N2/2P2PPP/R1BQK2R w KQkq - 2 9 | Bd3 | Are there any open files in this position? | No | files |
4kb1r/1pp2ppp/2q1p3/n2NP3/p2PN3/P4P2/1P3BPP/3R1QK1 b k - 0 24 | exd5 | Are there any open files in this position? | No | files |
1k1r1bnr/pppqn3/4bp2/1P1pP2p/3P4/2P2RB1/P2NB1pN/R2Q2K1 w - - 2 17 | c6e7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1b1r1k1/ppp2ppp/8/2bn4/3P4/5N2/PPP1B1PP/R1BK3R b - - 0 13 | Bb6 | What piece is on e2? | White Bishop | occupancy |
r5k1/pp3p1p/3b2n1/8/3P3q/2PB1Q1P/PP3PP1/4R1K1 w - - 5 22 | Bc4 | Does White have any passed pawns? | Yes: d4 | structure |
4r3/3Qpk2/3nN2q/2pP1p1p/4pP2/4P3/6R1/6K1 w - - 5 44 | Ng5+ | Identify any White knight outposts on the board. | c6, e6 | outposts |
8/3N4/2p5/kp1p4/2nP2p1/P1PK2P1/8/8 b - - 1 43 | Ka4 | Identify any White knight outposts on the board. | None | outposts |
6k1/2Rn1r2/pp3p2/3p3p/3P2pP/5N2/PP3PP1/5K2 w - - 0 30 | Ne1 | Is the move from f3 to d2 legal? | Yes | legality |
2rqr1k1/p4p2/5bpp/2pPp3/b1PpNP2/3B4/P2Q2PP/R4RK1 w - - 2 21 | f5 | Does Black have any isolated pawns? | Yes: a7 | structure |
8/4k3/4P3/5P1p/7P/1p1p4/3K4/8 b - - 2 56 | b2 | Is the Black king in check? | No | check |
6k1/pq4pp/1pb1p3/6B1/2B5/Pn3r2/1P4QP/3RR1K1 b - - 1 26 | Nc5 | Is the Black king in check? | No | check |
r4rk1/pp1q1ppp/2pb4/3p4/3Pn1P1/7P/PP1NPPB1/2RQR1K1 b - - 1 16 | f5 | What is the material balance in this position? | Equal | material |
4r3/pB4k1/1pppP1p1/6p1/5n2/R7/PP3P1P/6K1 b - - 7 31 | Rxe6 | Are there any open files in this position? | No | files |
1r3rk1/3bppbp/p2p2p1/1pn5/2nNP3/5P2/PP3QPP/K2R1B1R b - - 6 18 | Rfc8 | Is the move from c5 to a4 legal? | Yes | legality |
r3kb1r/1pqb1ppp/p3pn2/n7/Q1BP1B2/2N5/PP2NPPP/2R1K2R b Kkq - 7 12 | Qd8 | Is the move from c7 to f4 legal? | Yes | legality |
rn1k1b1r/pp3ppp/8/2pNPb2/2p3n1/5N2/PP3PPP/R2QKB1R b KQ - 0 10 | c3d5 | Identify any White knight outposts on the board. | d6 | outposts |
4r1k1/2rb1pb1/3p2pp/np1Pn3/4P1PP/B1N3RB/4NPK1/5R2 b - - 1 29 | Nec4 | Is the move from a5 to c4 legal? | Yes | legality |
5k2/ppr4p/3q1bp1/PRp1pp2/2P5/3P4/1Q2RPP1/6K1 w - - 8 32 | Qb3 | Is the move from e2 to e3 legal? | Yes | legality |
1r2r1k1/5ppp/pp1qb3/b2N4/P1PpR3/6P1/3P1PBP/3Q1RK1 b - - 1 22 | Bxd5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
4r1rk/8/3p3Q/p1pP1P2/Pp6/1P1B2qP/6P1/3R3K b - - 0 38 | h5h6 | Is the Black king in check? | Yes | check |
r5r1/1p1PQ3/p6k/8/P1P5/1P3p2/2P4P/6K1 w - - 4 35 | Kf2 | Is the move from d7 to h7 legal? | No | legality |
r3r1k1/2q3pp/3b4/1p2p3/p2P2QP/5Pp1/PPP1B1P1/R3R1K1 b - - 0 28 | a3 | What piece is on b8? | Empty | occupancy |
r2qr1k1/b1p2pp1/p4nnp/4p3/PPQ1P3/5NNP/5PP1/R1B1R1K1 b - - 0 20 | Re6 | Does Black have any isolated pawns? | Yes: a6, c7 | structure |
r1b2r1k/2q2p1p/p2ppb1Q/4nP2/1p1NP3/2N5/PPP4P/2KR1BR1 b - - 3 17 | Qe7 | Is the move from e5 to d7 legal? | Yes | legality |
r2q1rk1/ppp2ppp/2n1b3/3p4/1PP1n3/P2B1N2/1BP2PPP/R2Q1RK1 w - - 0 14 | cxd5 | What piece is on b8? | Empty | occupancy |
2r1rbk1/2q2ppp/4b3/pp1pPpB1/3n3P/P1P2N2/1P1Q1PP1/R3R1K1 w - - 0 19 | Nxd4 | Are there any open files in this position? | No | files |
r4rk1/pp2bppp/1q1p4/4p3/1P1p1n2/P2P1B2/2PB1PPP/1R1Q1RK1 w - - 2 15 | d5f4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/1p6/2pNp3/p1Pp4/P2k2p1/1P4P1/r7/3BK3 b - - 2 58 | Kxc5 | Are there any open files in this position? | Yes: f, h | files |
r2q1rk1/4bp2/p1bppnp1/1p5p/4P3/1N1B2Q1/PPPB1PPP/4RRK1 w - - 0 16 | Nd4 | Is the move from b2 to b2 legal? | No | legality |
4r1k1/6pb/p2p1p1p/2nP1P2/p1PNP1P1/4q1NP/4R1K1/8 w - - 0 37 | Rxe3 | Is the move from c4 to a3 legal? | No | legality |
3r2k1/1pp3p1/2n2p1p/p1b1p3/P1N1P3/2Pr1P1P/1P1BK1P1/R2R4 w - - 0 29 | Be1 | What piece is on h7? | Empty | occupancy |
r1b3kr/1p1n2p1/p2Q1n1p/q2p2B1/5P2/2N5/P1P3PP/4RR1K w - - 5 24 | Re7 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
2rr2k1/p3bp1p/1p2p3/4P1p1/Q5P1/8/PP3P1P/R2R1KNq b - - 2 28 | Bc5 | What is the material balance in this position? | Equal | material |
2rq2k1/1p3pbp/p4np1/3p2B1/3P4/1N6/P1PQ1PPP/5RK1 w - - 0 1 | Bh6 | Is the move from f1 to c1 legal? | Yes | legality |
bq2r1k1/5rbp/pQ1Rp3/6P1/P3P2R/1NN5/1Pn3BP/6K1 b - - 0 36 | Rb7 | Is the move from g7 to f3 legal? | No | legality |
r2q1rk1/pp2ppb1/2npb1pn/7p/2P4P/N1N3P1/PP2PPB1/R1BQ1RK1 b - - 6 11 | Qd7 | Does Black have any isolated pawns? | No | structure |
r2qk2r/pb1nb1pp/1ppppn2/8/2P1P3/2N2NP1/PP3PBP/R1BQK2R w KQkq - 0 10 | Ng5 | Is the move from h1 to f1 legal? | Yes | legality |
rnbqkb1r/pp2pppp/5n2/2p1P3/3p4/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 5 | Na4 | Is the b-file open, semi-open, or closed? | closed | files |
3n1k2/q4ppp/3p3b/1P1Np3/4P2P/3B1Q2/3r1PP1/5RK1 b - - 0 29 | Qa3 | What piece is on e5? | Black Pawn | occupancy |
1Q6/2pq1ppk/7p/3pP3/2nP4/4B2P/r4PP1/2R3K1 w - - 2 29 | Qb1+ | Is the move from e3 to f8 legal? | No | legality |
r5k1/6pp/p2b4/1ppp4/4b3/1P3N2/P2K1PPP/3R3R w - - 0 25 | Rhe1 | What is the material balance in this position? | White is up 1 pawn of material | material |
q5k1/1b1r1p1p/p1prpQp1/P1R5/1p1P3P/1P1BP3/5PP1/2R3K1 w - - 3 32 | Be4 | Is the move from b3 to h4 legal? | No | legality |
r6r/pp1k2pp/2n1pn2/8/2BQ4/8/PP3PPP/RNB1K2R b KQ - 0 13 | d3d4 | Is the Black king in check? | Yes | check |
1r1q1rk1/p2bpp1p/3p2pQ/1p1P4/2BN4/5P2/PPP3PP/2KR3R b - - 0 16 | bxc4 | Are there any open files in this position? | No | files |
2rr2k1/pb2qpp1/1p2pn1p/2b1N3/8/2PB2B1/PP2QPPP/3R1RK1 w - - 2 16 | Rd2 | What piece is on d4? | Empty | occupancy |
r2q1r1k/ppp4p/3pPbp1/2PNpp1n/1P1nP3/5P2/P3B1PP/1RBQR1K1 w - - 3 18 | exf5 | Is the move from h2 to c8 legal? | No | legality |
r4rk1/1p3pp1/pPp4p/P1Pp4/3P1Pn1/2N5/2Q2PBq/R3RK2 b - - 3 28 | Qxf4 | Is the move from h2 to g2 legal? | Yes | legality |
r1b2rk1/pp1nbppp/1qn1p3/2ppP3/3P4/2PB1N2/PP2NPPP/R1BQ1RK1 w - - 7 10 | Nf4 | Are there any open files in this position? | No | files |
2k5/2p3b1/p3P1pp/N7/1P1r1BPP/P3RK2/8/2r5 b - - 2 46 | Kd8 | What piece is on e3? | White Rook | occupancy |
4r1k1/3b1p1p/3P1bp1/8/p1p5/Pp6/1P1q1PPP/RQ3K1R b - - 1 6 | Bd4 | Does Black have any passed pawns? | No | structure |
r2qkb1r/1p1b1pp1/p1nppn1p/5N2/5P1B/2N5/PPP3PP/2KRQB1R b kq - 3 12 | Qa5 | Does White have any isolated pawns? | No | structure |
rnbqk2r/1p3ppp/p1p1pn2/3p4/1bPP4/1PN1PN2/P4PPP/R1BQKB1R w KQkq - 1 7 | Bb2 | Does Black have any isolated pawns? | No | structure |
r1bqk2r/pp1n1ppp/3bpn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQK2R w KQkq - 3 7 | O-O | Is the h-file open, semi-open, or closed? | closed | files |
4rr2/1bk4Q/p2p4/8/1Pn1P3/P1P5/2B3q1/R1K4R b - - 1 35 | h6h7 | Is the Black king in check? | Yes | check |
2b2r2/3pRp2/1RpP1k2/2P2ppp/1p1K3P/rB4P1/P7/8 b - - 2 29 | f4 | Does White have any isolated pawns? | Yes: a2 | structure |
r2qnbk1/1b3ppp/2np4/p2N2P1/1p2P3/1N1B4/PPP4P/1K1RQ1R1 w - - 0 24 | Bb5 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/B4p2/3k4/2p2K2/7P/5P2/P5P1/8 b - - 0 43 | h3h4 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/5P1n/3B1K2/1k4p1/8/8/8/8 w - - 5 8 | Kg7 | Are there any open files in this position? | Yes: a, b, c, d, e, h | files |
8/5pk1/1p1r1r1p/1R6/P5PK/4P3/1R3P2/8 b - - 0 49 | Rf3 | Are there any open files in this position? | Yes: c, d | files |
1k1r1b1r/2p1qp2/Q3b2p/1N1p4/2nP2pN/3R2P1/PPP2PP1/2K1R3 b - - 6 21 | Qg5+ | Is the Black king in check? | No | check |
2bqr1k1/4rpp1/2pp4/pp2p1P1/4P3/PPNPPQ2/2P3RK/R7 b - - 4 25 | g6 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
8/pr3kp1/R6p/4PK1P/6P1/8/P7/8 w - - 5 38 | Rd6 | Does White have any passed pawns? | Yes: e5 | structure |
8/3r2p1/4pp1p/pkp5/R5PP/1P2K3/P4P2/8 w - - 2 41 | f4 | Is the move from e3 to a5 legal? | No | legality |
8/8/1k3RK1/8/4N3/8/8/2r5 b - - 2 51 | f4f6 | Is the Black king in check? | Yes | check |
1r6/2pk1p2/p1p5/2B5/P1KP2n1/1P2pq2/2P5/1R6 w - - 0 30 | e4e3 | What is the material balance in this position? | Black is up 10 pawns of material | material |
r6r/2pb1pp1/p2p2k1/1p2p1p1/4Pn1N/1BPPR3/PP3P1K/6R1 b - - 11 25 | f3h4 | Is the White king in check? | No | check |
r2b1r1k/2q3n1/3p1pp1/pbnPpP1P/4P3/1pP3N1/1P4K1/RBBQR3 w - - 0 29 | hxg6 | What piece is on c3? | White Pawn | occupancy |
r1b1k2r/1p1pbpp1/1nq1p2p/p1p1P3/PnP1N2P/R4N1R/1B1P1PP1/3QKB2 w kq - 4 13 | Qb1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/8/1Q4k1/P6p/8/K1Pq4/8/8 b - - 1 59 | b4b6 | Identify any Black knight outposts on the board. | g4 | outposts |
r1b2kr1/1p2qpbp/p1nN4/3R1p2/5Q2/1N6/PPP3PP/2K2B1R w - - 1 19 | Nxc8 | Are there any open files in this position? | Yes: d, e | files |
r1bq1rk1/1n2b2p/3p2p1/p1pPpp2/RP2P3/2P2N1P/3NQPP1/2B1R1K1 w - - 0 19 | b5 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk1nr/pp1pppbp/6p1/2p5/2B1P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 3 4 | Nc6 | Is the move from b7 to b6 legal? | Yes | legality |
8/7p/RR1rk1p1/5p2/4p3/7P/5PP1/2r3K1 w - - 1 32 | c4c1 | Is the White king in check? | Yes | check |
rnq1k1nr/pppbppbp/3p2p1/8/2PP4/5NP1/PP2PPBP/RNBQK2R w KQkq - 3 6 | h3 | Identify any White knight outposts on the board. | None | outposts |
rnbqk1nr/pp1pppbp/6p1/2pP4/4P3/2N5/PPP1NPPP/R1BQKB1R w KQkq - 1 6 | d6 | What piece is on d1? | White Queen | occupancy |
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