fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/8/8/6Q1/4K3/4P1k1/6p1/8 b - - 3 56 | h6g5 | Is the Black king in check? | Yes | check |
r1b1r1k1/1p1nqpb1/p2p2pp/2pPn3/P3N3/5NPP/1P1BPPB1/2RQR1K1 b - - 1 16 | b5 | Is the White king in check? | No | check |
rn3knr/ppp5/3p1b2/6N1/3P2p1/2NQ2P1/PPP2P1q/R3RK2 w - - 2 19 | Qg6 | Is the move from c3 to g3 legal? | No | legality |
3r1r1k/pp1B1pbp/2nQ1Np1/3N4/4pP2/8/1PPK2PP/q2R3R b - - 3 19 | Qxb2 | What is the material balance in this position? | White is up 2 pawns of material | material |
1rknR3/8/p7/P6p/2Q5/8/1PP3Pq/1K6 b - - 10 31 | f7c4 | Is the Black king in check? | Yes | check |
rnr3k1/p3BNbp/3P2p1/1R1B4/8/4n3/PP4PP/7K w - - 5 27 | Nh6+ | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1bq1rk1/pp2bppp/2np1n2/2p3N1/2B1PB2/2NP4/PPP3PP/R2Q1RK1 b - - 0 9 | h6 | What is the material balance in this position? | Equal | material |
1k6/8/2K5/1P6/3n4/8/8/8 w - - 1 57 | f3d4 | Is the White king in check? | Yes | check |
1r2r1k1/1bqn1pbp/pp1p1np1/2pP4/PP3B2/2N2NP1/3QPPBP/1RR3K1 w - - 2 16 | a5 | Identify any White knight outposts on the board. | None | outposts |
8/5pk1/p4p2/3r3p/2qP1Q1P/5P2/1P1R2PK/8 w - - 6 41 | g4 | Is the move from d4 to c4 legal? | No | legality |
3rk2r/1pqb1ppp/p2ppn2/8/N1PQP3/8/PPB2PPP/R2R2K1 b k - 2 14 | O-O | Is the move from f6 to g8 legal? | Yes | legality |
r2q1rk1/pb1nppb1/1p1p2pp/2p4n/3P3B/2PBPN1P/PP1NQPP1/R4RK1 w - - 1 12 | Nh2 | Does White have any isolated pawns? | No | structure |
4rbk1/qb3pp1/7p/1p2P3/1Pnp1P1B/5NP1/7P/1QR2R1K b - - 1 33 | Qa3 | Are there any open files in this position? | Yes: a, c | files |
5k2/r3p1rp/3pR2K/2pP1p2/2P2P2/6P1/P3R2P/8 w - - 21 49 | R6e3 | What piece is on a2? | White Pawn | occupancy |
r2qkb1r/pp1n1ppp/2p1pn2/3P3b/3P4/5NPP/PP2PPB1/RNBQ1RK1 b kq - 0 8 | exd5 | Identify any White knight outposts on the board. | None | outposts |
5rk1/3b1p2/p4p1p/6n1/7R/1BP1Q1P1/5PKP/r7 w - - 0 40 | f4 | Does White have any passed pawns? | Yes: c3 | structure |
rq3rk1/p2n1p1p/3b1np1/1Np5/Np2b3/4B1P1/PPQ1BP1P/R2R2K1 w - - 0 19 | Qc4 | Is the Black king in check? | No | check |
r7/p3rp2/1p5k/1n1p4/6R1/2BR1P2/PP4P1/5K2 w - - 5 36 | Bd2+ | What piece is on a2? | White Pawn | occupancy |
r1bq1rk1/pp1nbpp1/4p2p/4P3/2BNN3/8/PP3PPP/2RQ1RK1 w - - 3 14 | Qh5 | What piece is on f7? | Black Pawn | occupancy |
2k3r1/pb1r1pP1/8/1qNp4/1pp5/4B1P1/1P3PBP/R4RK1 b - - 0 23 | d4 | Does Black have any passed pawns? | Yes: d5 | structure |
r3kb2/1b3p2/p2p2pr/2q1n3/1p1NPQ2/3B4/PPP1N1RP/R6K w q - 0 23 | a3 | Does Black have any isolated pawns? | Yes: d6 | structure |
r2q1rk1/pp1n1ppp/2pbbn2/3pN1B1/3P4/2N5/PPP1BPPP/R2Q1RK1 w - - 6 10 | f4 | What piece is on g4? | Empty | occupancy |
r1b1qrk1/ppn1b1pp/2p1pn2/3p1p2/2P5/PPNPP1P1/4NPBP/R1BQ1RK1 w - - 1 11 | Bb2 | What is the material balance in this position? | Equal | material |
8/ppq2k1p/6p1/5p2/8/8/PQr2PPP/3RR1K1 w - - 4 24 | c5c2 | What is the material balance in this position? | White is up 4 pawns of material | material |
r3k1r1/p2bbp1p/1qp3p1/3pB3/Q7/P2B4/1PP2PPP/R4RK1 b q - 0 16 | f6 | What piece is on b6? | Black Queen | occupancy |
r1q3k1/4RQ2/p5pp/2pP2p1/2P5/1P5P/P4PP1/R5K1 b - - 2 30 | f3f7 | Is the Black king in check? | Yes | check |
8/7p/6p1/k7/r6K/6r1/8/8 w - - 0 44 | Kxg3 | What piece is on g6? | Black Pawn | occupancy |
rnbqk2r/ppp1bppp/1n1p4/8/2PP4/2N5/PP3PPP/R1BQKBNR w KQkq - 2 7 | Bd3 | Are there any open files in this position? | Yes: e | files |
2r1k1r1/2q1bp2/p1n1p3/1p1pP3/1P3p1p/P1PB1NnP/2RQ1BPK/4R3 w - - 2 24 | a4 | Identify any White knight outposts on the board. | None | outposts |
r1bqkbnr/pp1p1ppp/2n1p3/8/3NPB2/8/PPP2PPP/RN1QKB1R b KQkq - 2 5 | Nf6 | Identify any White knight outposts on the board. | None | outposts |
1k2r3/1P4pp/K3b3/p3Pp2/8/2P1B3/PP4PP/q4B1R w - - 0 23 | Bb5 | Identify any Black knight outposts on the board. | e4 | outposts |
2r3k1/4n1p1/4p1bp/p3Pp2/2pB4/2r1P1P1/5PBP/R5K1 w - - 0 26 | b3c3 | What is the material balance in this position? | Black is up 6 pawns of material | material |
7k/7P/8/4n3/8/2K5/8/8 b - - 1 53 | Kxh7 | Is the b-file open, semi-open, or closed? | open | files |
r4r1k/1p2p1b1/2ppb3/p1Pn1ppq/N1NP2p1/1P2P1P1/P1Q1BP2/2RRB1K1 w - - 0 26 | f3 | Are there any open files in this position? | Yes: h | files |
5rk1/pp3r1p/2bq2pb/2pNpp2/P1P1P3/3P1N2/R4PPP/3QR1K1 w - - 8 18 | a5 | What piece is on e7? | Empty | occupancy |
8/5pkp/2r3p1/1P6/8/6P1/5P1P/1R3K2 b - - 0 40 | b4b5 | Identify any White knight outposts on the board. | a6, c6 | outposts |
8/pp3Ppp/P1p2k2/3p4/8/8/1PPr2PP/6K1 b - - 0 27 | Rd1+ | Is the White king in check? | No | check |
3rr1k1/p1R2ppp/5q2/1p1P4/3n4/P4B1P/1P3PP1/3Q1RK1 w - - 0 21 | Rc3 | Is the move from d5 to d6 legal? | Yes | legality |
rnb2rk1/p2qb1pp/2p1pp2/1p6/PnpPP3/2N2NP1/1P2QPBP/R1B2RK1 b - - 2 13 | Nd3 | Is the move from h7 to h5 legal? | Yes | legality |
2r3k1/p4p1p/5p2/8/8/2P5/P1Kr2PP/5R2 w - - 0 26 | e2d2 | Is the White king in check? | Yes | check |
4rnk1/pp1qb1pp/4p3/3pP3/r2P1PR1/3QBN2/1P5P/6RK b - - 1 25 | g6 | Are there any open files in this position? | Yes: c | files |
rnbqkb1r/pp1p1ppp/4pn2/8/2Pp4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5 | c5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r2rk1/p4ppp/1p2p3/8/2q5/2B1PQ1P/P4PP1/2R2RK1 w - - 1 20 | c7c4 | What is the material balance in this position? | White is up 2 pawns of material | material |
4b3/p2qk3/1p1rpp1Q/2p5/2P4P/8/PPB5/1K2R3 b - - 2 32 | e5 | Does White have any passed pawns? | Yes: h4 | structure |
rn2k2r/pp2q1pp/1b1p1n2/3Np1B1/2B1Ppb1/5N2/PP2Q1PP/3R1K1R b kq - 1 13 | Nxd5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1r4k1/8/6P1/6KP/8/8/4R3/8 b - - 4 56 | Kf8 | Identify any Black knight outposts on the board. | None | outposts |
4b3/R3k3/3p2P1/2pPp2K/4P3/1P6/3b4/8 b - - 2 6 | Kf6 | Is the move from e8 to b6 legal? | No | legality |
r3r1k1/p2q1ppp/1pn2n2/3p4/P1pP4/2P1P1N1/1BQ2PPP/4RRK1 b - - 5 17 | Na5 | Is the Black king in check? | No | check |
6k1/1pr5/4PP2/3p1K2/3P4/b4N2/8/8 w - - 0 48 | Ke5 | Identify any Black knight outposts on the board. | None | outposts |
8/8/2p5/1p1p4/1P6/2P2k1p/B1K4P/8 b - - 0 58 | Kg2 | What piece is on e5? | Empty | occupancy |
2rr2k1/1b2nppp/p2b4/1pp5/8/1P1PBN1P/1PP1NPP1/R1R2K2 w - - 10 22 | Bf4 | Is the White king in check? | No | check |
r3b3/pB2kppp/4pn2/q3N3/2P2Q2/1P4P1/P2r1P1P/R4K1R b - - 0 20 | Rad8 | What piece is on f4? | White Queen | occupancy |
5rkb/4pN2/1p2P1P1/p7/3p1P2/4p1KQ/P1P1q1P1/8 b - - 5 49 | Qf2+ | Does Black have any passed pawns? | Yes: e3 | structure |
r1bq1rk1/ppp2pp1/1b1p1n1p/8/1nBPP2B/2N2N2/PP1Q1PPP/R3K2R b KQ - 3 11 | d5 | Is the move from f6 to h5 legal? | Yes | legality |
1rbqr1k1/p4pb1/3p1np1/1NpPn3/4P3/4BPPp/PP1QB2P/R4RKN w - - 1 17 | Nc3 | What piece is on g2? | Empty | occupancy |
r1q1kb1r/1p1n1ppp/p1p1pn2/2Pp1b2/QP1P1B2/2N1PN2/P4PPP/R3KB1R w KQkq - 0 11 | h3 | Is the b-file open, semi-open, or closed? | closed | files |
1r3rk1/1p3pbp/p5p1/3B4/P1P1p3/1P1bP1P1/1B3R1P/R5K1 w - - 0 23 | Bf6 | Is the White king in check? | No | check |
rnbqkb1r/ppp2ppp/8/3p4/3Pn3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 6 | Bd3 | Does Black have any passed pawns? | No | structure |
8/pr2kp1p/4p1p1/2p1P3/2Pp1P2/3K4/P1R3PP/8 b - - 5 31 | c1c2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/2p3p1/1Rkpp3/1p4p1/1P1PP1P1/2P2K1P/8/8 b - - 0 35 | a6b6 | Is the Black king in check? | Yes | check |
8/4B3/8/pK6/1pn5/1k6/8/8 b - - 9 5 | Ne5 | Does Black have any passed pawns? | Yes: a5, b4 | structure |
8/6p1/p2p4/3b1pBk/2p4P/P1P3bN/1P4P1/5K2 b - - 2 38 | Bf7 | Is the move from g3 to e1 legal? | Yes | legality |
qr4k1/1rp2pp1/2p1p2p/2Rn4/P1NP4/4P1P1/1PQ2P1P/5BK1 w - - 7 26 | Ra5 | Is the move from b2 to c2 legal? | No | legality |
r1b1k1n1/ppp1qp2/3P4/3Q2p1/4Pp1r/BBP3p1/P1P3P1/R3KR2 b Qq - 0 15 | Qe6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r4k/r3q1p1/pn2p2p/2p1P3/3p1PB1/7Q/PP4PP/2R2RK1 b - - 4 24 | Re8 | What piece is on f7? | Empty | occupancy |
4r3/p3r1k1/1p1q1p1p/2pp1Pnb/3P3P/P2BP1Q1/1P4P1/4R1K1 w - - 0 4 | Qxd6 | What is the material balance in this position? | Black is up 7 pawns of material | material |
r4rk1/pp1b2p1/2pbpq1p/3nNp2/3P1P1P/1BN3P1/PP1Q1P2/3RR1K1 b - - 1 18 | Be8 | Does White have any isolated pawns? | Yes: d4 | structure |
4kb2/2r2p1p/1p3Q2/pPnbP2B/2q1p3/P7/2P3PP/3R1R1K w - - 2 30 | e6 | Is the move from e5 to e6 legal? | Yes | legality |
5kr1/q7/p2pQb1r/1p1Pp1p1/2p1P3/P6P/1PP1NPP1/3R1RK1 w - - 8 29 | e7f8 | What is the material balance in this position? | White is up 2 pawns of material | material |
4r3/5nkp/p2n2p1/3Q1bP1/pP1b1P1P/8/B7/4R1K1 w - - 1 39 | Qxd4+ | Does Black have any isolated pawns? | Yes: a4, a6 | structure |
r2q1rk1/p4ppp/1p1p4/2pPn2Q/P1P5/8/3N1PPP/1R2R1K1 b - - 2 18 | d1h5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b2rk1/bpp1qp2/2np1n1p/p3p3/P1B1P1pN/2PP2B1/1P1N1PPP/R2QR1K1 b - - 1 13 | Nh5 | Is the Black king in check? | No | check |
2r1q3/3n2p1/RbkBp1p1/3n1pP1/2pP1P2/4P2P/6B1/1Q4K1 w - - 1 39 | Qb4 | Does White have any passed pawns? | No | structure |
1r1qnbk1/1p1b1r2/pN1p2n1/B2Pp1p1/4PpP1/1Q3P2/1PR1BN2/2R3K1 w - - 8 27 | Nxd7 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
5rk1/6p1/3q4/2pP1p1P/1p6/1P6/P3R1BP/3R3K b - - 0 33 | f4 | Is the move from g8 to h7 legal? | Yes | legality |
rnbqkbnr/pppp1ppp/8/4p3/6P1/5P2/PPPPP2P/RNBQKBNR b KQkq - 0 2 | Qh4# | What piece is on d2? | White Pawn | occupancy |
3r2k1/1p3ppp/8/Pp1p4/8/4P1P1/1P3P1P/2R3K1 w - - 0 26 | Rc7 | Identify any Black knight outposts on the board. | None | outposts |
2kr3r/p1p2ppp/Q1b2q1n/4p3/8/B4N2/P4PPP/1RR3K1 b - - 0 18 | Kd7 | What piece is on h6? | Black Knight | occupancy |
rr6/4kpp1/4pnp1/p1qp4/Q7/P2BP2P/1P2KPP1/1RR5 b - - 3 21 | Qd6 | What piece is on c8? | Empty | occupancy |
r2qkb1r/pp1n1ppp/8/3Np3/4PPQ1/8/PB4PP/1R2K1NR b Kkq - 0 13 | Rc8 | Is the c-file open, semi-open, or closed? | open | files |
r1bqkb1r/pp1ppppp/2n2n2/2p5/4P3/2PB1N2/PP1P1PPP/RNBQK2R b KQkq - 2 4 | e5 | Is the Black king in check? | No | check |
r1r3k1/bbqn1ppp/p2ppn2/8/NPPNPP2/R2B3P/6P1/4QRBK b - - 0 19 | Nh5 | Identify any White knight outposts on the board. | a5 | outposts |
1r4k1/2q1bp1p/3p2p1/1P1Bp3/4P3/5QP1/5P1P/1R4K1 b - - 1 10 | Bd8 | Is the Black king in check? | No | check |
r1bk1b2/1q3B2/p2p1N2/4pNP1/1p2P3/4B2r/PPPKQ3/R7 b - - 0 28 | Qxf7 | Is the White king in check? | No | check |
r3nrk1/3R1p1p/5b2/4p3/pp2P3/4p1N1/PPP4P/1KN2R2 w - - 0 24 | Nf5 | Does White have any isolated pawns? | Yes: e4, h2 | structure |
r2Q1r2/pp3pkp/4p1p1/2p1PbN1/2P5/7P/P1P2PP1/R3R1K1 b - - 0 18 | Rfxd8 | Identify any White knight outposts on the board. | None | outposts |
r2q1k1r/pp5p/1np1b3/4Ppb1/3P4/2PB4/PP4P1/R1BQ1RK1 w - - 0 19 | Bxf5 | Identify any White knight outposts on the board. | f6 | outposts |
5k2/2r2n1p/4R3/1B1p1p2/5Pp1/4P1K1/5P2/8 b - - 5 101 | Kg7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3rr2R/p1pk4/1p2Q1p1/6B1/P7/2Pp4/1P1K1PP1/2R5 b - - 0 29 | g4e6 | Is the White king in check? | No | check |
r2q1rk1/pp1b1ppp/1n2pb2/8/4P1Q1/6P1/PP3PBP/RNBR2K1 w - - 1 14 | Qh5 | Is the White king in check? | No | check |
8/5p1k/3q2p1/8/2n5/5B1P/3pKB2/3R4 b - - 4 49 | Qe6+ | Identify any White knight outposts on the board. | None | outposts |
6k1/p7/8/1p4p1/1P1pPq2/3P1B2/2r3K1/1R6 w - - 4 42 | c3c2 | What is the material balance in this position? | Black is up 7 pawns of material | material |
rnb1k2r/p2pppbp/1p4p1/1Nq1P3/6n1/2P2N2/PP3PPP/R1BQKB1R w KQkq - 1 9 | Qd4 | Does White have any isolated pawns? | No | structure |
rn3n2/pp3k1p/3pb3/q3b3/2B5/8/PBP1K1P1/R2Q3R w - - 0 18 | Qd3 | What piece is on c8? | Empty | occupancy |
3r4/4p3/4P2k/5p2/2n2P1K/2N1P1R1/8/8 b - - 2 57 | Rd3 | Identify any Black knight outposts on the board. | None | outposts |
rnb1k1nr/pp1ppp1p/6p1/2pP4/4P3/2P2N2/P2Q1PPP/q1B1KB1R b Kkq - 0 8 | Qb1 | What piece is on h7? | Black Pawn | occupancy |
r2qnrk1/3nbppp/3p4/4pPP1/pp2P3/4B1N1/PPPQ3P/N1KR1R2 b - - 1 18 | a3 | What piece is on a2? | White Pawn | occupancy |
r1bq1rk1/3npp1p/2p2npQ/pp4N1/3P4/2N5/PPP2PPP/2KR1B1R w - - 2 14 | h4 | What piece is on c1? | White King | occupancy |
rnbqk1r1/pp2np1Q/4p3/b2pP3/1P6/P1p5/2P2PPP/R1B1KBNR w KQq - 0 10 | bxa5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3rbk1/1bp2pp1/p1q5/4p3/2p1n3/P1P1BQ1P/1P3PPN/R3RNK1 w - - 0 21 | Ng3 | Does Black have any isolated pawns? | Yes: a6, c4, c7 | structure |
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