fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbq1bnr/pppp1k2/7p/8/2B1PppP/8/PPPP2P1/RNBQK2R b KQ - 1 7 | d5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2r1n3/pp2k1p1/4pp1p/8/3R4/2PN4/PP3PPP/2K5 w - - 2 27 | Ra4 | What piece is on f6? | Black Pawn | occupancy |
rnbqkbnr/pp3ppp/3p4/2p5/2B1P3/2p2N2/PP3PPP/RNBQK2R w KQkq - 0 6 | d4c3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
4r3/Q2b1k1p/5n2/2pPpP2/1pP1P3/1P3K2/8/8 b - - 7 54 | Rc8 | Identify any Black knight outposts on the board. | None | outposts |
4r1k1/pp3Bpb/5n1p/q1p1NP2/3r4/2P4P/PB1Q2P1/5RK1 b - - 0 26 | b3f7 | Is the Black king in check? | Yes | check |
2r1k2r/1bqnbp2/p2p2pp/4pP2/1p2P1PP/1N6/PPP1Q1B1/1K1RB1R1 b k - 0 24 | a5 | Is the move from e7 to e2 legal? | No | legality |
r2qkbnr/ppp2ppp/2b1p3/8/3P4/2N5/PP2PPPP/R1BQKB1R w KQkq - 0 7 | Bf4 | Are there any open files in this position? | No | files |
5b2/2R1p1kp/pp2P1p1/4pq2/1Q5P/3r1P2/PP3PK1/4R3 b - - 2 31 | Qxf3+ | Are there any open files in this position? | Yes: c, d | files |
r3k1br/1ppqn3/p1nb2pp/3pp1N1/7Q/1PN1P3/PBPPB1PP/2KR3R w kq - 4 14 | Rhf1 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/p1q1bppp/2p2n2/3P4/Q7/8/PP1N1PPP/R1B2RK1 b kq - 0 13 | Nxd5 | Identify any White knight outposts on the board. | c6 | outposts |
r1b1k2r/3n1ppp/p1n1p3/q2pP3/1b1P1P2/2N1BN2/P2QB1PP/2R1K2R b Kkq - 4 15 | Nb6 | Identify any Black knight outposts on the board. | None | outposts |
r1bq3n/1p2Rr1p/p2p2pk/3N1p2/3Q1P2/6P1/P4PBP/R5K1 w - - 8 22 | Rae1 | What piece is on h4? | Empty | occupancy |
r2qkbnr/pbpn1ppp/1p1p4/4p3/3PP3/2PB4/PP2NPPP/RNBQ1RK1 b kq - 0 6 | Ngf6 | What piece is on d7? | Black Knight | occupancy |
r2r4/1p2kp1p/2bpp1p1/p1n5/P1P1PP2/1PN3P1/2BR3P/3R2K1 b - - 0 24 | f6 | Is the move from c5 to b3 legal? | Yes | legality |
rn2k2r/pb1p1pp1/1p3q2/2p5/2P1PpBp/P1PP3Q/4NPPP/R4RK1 b kq - 1 14 | g5 | Is the move from b7 to e4 legal? | Yes | legality |
1r1r4/p5k1/1p1q1p1p/2pP4/8/P5P1/1P2QPBP/3R2K1 b - - 2 28 | f5 | Is the move from f6 to a2 legal? | No | legality |
2k5/ppp3p1/3n1pQ1/3p3p/3P4/2PN4/PP2qPPP/6K1 w - - 3 24 | h4 | Is the move from g6 to f5 legal? | Yes | legality |
2q1kb1r/3n1ppp/4p3/3p4/3P1B2/3QPN2/Pr3PPP/R3K2R b k - 1 19 | Nf6 | Identify any Black knight outposts on the board. | None | outposts |
6k1/5rp1/3BQb1p/P1P5/8/5R2/rq4PP/5R1K w - - 1 11 | Rg1 | What piece is on b6? | Empty | occupancy |
5r1k/3b2pp/p3p3/3pPpB1/2pP3Q/4P2R/n1q3PP/5BK1 b - - 3 25 | f4 | Are there any open files in this position? | Yes: b | files |
r1r2bk1/5p1p/2p2pp1/p4q2/PnpP4/1P3NBP/3QRPP1/R5K1 w - - 0 23 | bxc4 | Does Black have any passed pawns? | No | structure |
4r1k1/p4pbp/6p1/8/3P4/1P3NP1/q1r2P1P/1R3RK1 w - - 1 32 | e5g7 | What is the material balance in this position? | Black is up 8 pawns of material | material |
rn2kb1r/ppp1pppp/5n2/8/1q4b1/2N1BQ2/PPP3PP/2KR1BNR w kq - 4 8 | Nb5 | What piece is on d2? | Empty | occupancy |
5rk1/3b1pp1/p2p3p/2p5/4P3/5PP1/P6P/2KR4 b - - 1 32 | h1d1 | Identify any Black knight outposts on the board. | c5 | outposts |
4kb1r/1ppq1ppp/1nn1p3/1N2P3/p1bP4/P1N1BP2/1P4PP/R1Q2RK1 b k - 2 20 | Na5 | What is the material balance in this position? | White is up 2 pawns of material | material |
rnb1k2r/1p3ppp/p2pp3/8/2BP4/P2QP3/1qP1N1PP/R3K2R w KQkq - 0 14 | O-O | Is the move from a1 to c1 legal? | Yes | legality |
2rq1rk1/1p1nbppp/p2p1n2/4pP2/P1b1P3/1NN1B3/1PP1B1PP/R2Q1RK1 w - - 1 13 | a5 | Is the move from f1 to f3 legal? | Yes | legality |
2r3k1/2qbrp1p/p1n1nQpB/1p2p3/2p1P3/2P2N1P/PPB2PP1/3RR1K1 b - - 11 27 | Ree8 | What piece is on b7? | Empty | occupancy |
r4rk1/pp1nbpp1/1qp1p2p/3n3P/1P1P4/2PQ1NN1/P2B1PP1/R3R1K1 w - - 7 17 | a3 | What piece is on g2? | White Pawn | occupancy |
r3r1k1/5ppb/p2p3p/2nPqP2/p1P1P1P1/4Q1NP/3N4/R3R1K1 w - - 3 31 | Kg2 | What piece is on d2? | White Knight | occupancy |
r7/5pp1/1p1pkn1p/P3p3/N3P1PP/5P2/1PP1K3/R7 b - - 0 26 | bxa5 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rnk/6bp/3p2p1/p1pPpp2/Q1P1P3/2N2P2/P2BB1PP/1R3RK1 w - - 0 19 | Qc6 | Is the move from f1 to h8 legal? | No | legality |
4rrk1/ppqn1pp1/2pbb2p/3p4/3Pn3/2NQ1N1P/PPPB1PP1/3RRBK1 b - - 3 14 | f5 | Is the e-file open, semi-open, or closed? | open | files |
2rq3r/1b3pk1/p3p1pp/3nP3/1p2B3/7Q/PP3PPP/R1B1R1K1 b - - 2 21 | Rc4 | Is the move from h8 to g8 legal? | Yes | legality |
5rk1/5ppp/6n1/1p1Qp3/8/4BN1P/5PP1/2q2BK1 b - - 0 25 | Qb2 | Does White have any passed pawns? | No | structure |
r2qkb1r/pppb2pp/3p1pn1/3P4/2BQP3/8/PPP2PPP/RNB1R1K1 w kq - 4 10 | e7g6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqr1k1/pppn1pp1/2pb3p/4P3/4P3/2P1BN2/PP1N1PPP/R2Q1RK1 b - - 0 11 | Bxe5 | What piece is on b8? | Empty | occupancy |
8/8/1rk5/4KP2/8/R1n5/p7/8 b - - 3 75 | Rb3 | What piece is on g5? | Empty | occupancy |
5k2/2p1n2p/1p3pp1/p3p3/P1Q1P1PP/1PP1N3/3q1PK1/8 b - - 5 32 | Qd7 | What piece is on e6? | Empty | occupancy |
2B5/1p3k1p/p5p1/P1bpP3/2p5/2P5/1P4PP/7K b - - 3 35 | b6 | Does White have any isolated pawns? | Yes: e5 | structure |
4R3/Q4Bpk/2p2qr1/1p6/3P3p/7b/PP3PP1/6K1 w - - 1 26 | Rh8+ | Does White have any passed pawns? | No | structure |
1r4r1/1P1k3b/B1Rp4/p1pP1P1P/4pK2/4N3/P7/8 w - - 7 42 | Rc8 | Identify any Black knight outposts on the board. | d3, d4, f3 | outposts |
2rqkb1r/5ppp/p3p3/1p1bQ3/3P4/P7/1P1B1PPP/R3KB1R b KQk - 2 15 | f6 | Is the move from f7 to g3 legal? | No | legality |
r4r2/Np5k/1P1p2nb/P2qp3/8/5N2/5QPP/R3R1K1 w - - 0 29 | Qc2 | Is the move from f3 to f5 legal? | No | legality |
8/5k2/5p2/4p1p1/1r1bP1K1/8/2n5/5q2 b - - 3 51 | f5g4 | What is the material balance in this position? | Black is up 22 pawns of material | material |
r1bqkb1r/pp2pppp/1nn5/3pP3/2p5/2P2N2/PPBP1PPP/RNBQK2R w KQkq d6 0 8 | exd6 | Are there any open files in this position? | No | files |
r7/8/pr1p4/Rp1Pppkp/1P6/2P1KP1P/1P6/R7 w - - 1 35 | h4+ | What piece is on h8? | Empty | occupancy |
r1b1k3/1p3p2/p1p5/2b3p1/4P1p1/3B4/PqP1N1PK/R3QR2 b - - 0 2 | Qh8+ | Identify any White knight outposts on the board. | None | outposts |
8/5p1k/2R4p/1P1qQ1p1/4p3/P7/1B3PK1/7r b - - 8 40 | Rg1+ | What piece is on g7? | Empty | occupancy |
1rb1r1k1/2qn1pbp/6p1/1pnPp3/2p2P2/2N1B1NP/1PB2QP1/R4RK1 w - - 0 20 | f5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/6kp/3R3n/2rp1p2/5Pp1/3BP1K1/5P2/8 w - - 10 104 | Kh4 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
2bqr1k1/N4pb1/3p2p1/2pP4/4B3/4B2P/PrRQ3P/4KN1R b K - 1 21 | Rb1+ | What piece is on e4? | White Bishop | occupancy |
3rr1k1/bpqb1pp1/2p3np/p1Pn4/P1BNN3/1Q5P/1P3PP1/2BRR1K1 b - - 2 26 | Re7 | Is the White king in check? | No | check |
8/8/4b3/6p1/1p1k3p/1P5P/2K2PB1/8 b - - 1 38 | g4 | Does White have any isolated pawns? | Yes: b3, f2, h3 | structure |
4r1r1/1pp1q2k/7P/p3np2/2Pp1R1P/P2P4/1P2bQBN/R5K1 b - - 1 28 | Nxd3 | What is the material balance in this position? | White is up 1 pawn of material | material |
4RK2/3k1P2/8/8/8/8/6r1/8 w - - 0 153 | Re4 | Does White have any passed pawns? | Yes: f7 | structure |
rnbqr1k1/5pbp/p2p2p1/1NpP4/4n3/3B1N1P/PP3PP1/R1BQR1K1 w - - 0 13 | Nc3 | Identify any White knight outposts on the board. | None | outposts |
r2qkb1r/pp1bpppp/2np1n2/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 4 6 | h3 | What is the material balance in this position? | Equal | material |
r6k/p2q2pp/n1p1p3/1p2P3/2pP4/8/PP2BQPP/5RK1 w - - 0 21 | Qf8+ | What piece is on b8? | Empty | occupancy |
2r1k2r/p1nq2pp/1pnbbp2/2p1p3/4N3/1P1N2P1/PB1PPPBP/2RQ1RK1 w k - 0 14 | f4 | Is the move from d1 to e1 legal? | Yes | legality |
3r2k1/1b4b1/p3N2p/4r3/1pP1p3/3n3Q/PP6/1K4R1 b - - 1 33 | Rd7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rnb3k1/ppp3pp/4p2r/3p1p2/3PnN1q/2P1P3/PP2BPP1/RNBQ1RK1 w - - 5 5 | Bh5 | Does Black have any isolated pawns? | No | structure |
r3r3/2q2pkp/p1Pp2p1/2n5/P7/2p3P1/4PPBP/R2Q1RK1 w - - 0 20 | Qd4+ | Is the move from g3 to c6 legal? | No | legality |
r4rk1/pp1b1pbp/1q1pp1p1/5P1P/3NP3/1PN1Q3/1PP3P1/2KR3R b - - 0 18 | gxf5 | Is the move from b6 to d4 legal? | Yes | legality |
r1bQ1b1r/p4kp1/2p2n1p/1p6/4P3/2N1B3/PPP1KP1P/6R1 b - - 0 15 | Bg4+ | Are there any open files in this position? | Yes: d | files |
r4rk1/2p1qppp/p2npn2/1p1p4/3PPP2/2PQ4/PP1N2PP/R1B2RK1 w - - 0 17 | e5 | Are there any open files in this position? | No | files |
5r2/pb1k4/1p2pB2/2bpP2p/3N1R2/6rP/PP3RP1/6K1 w - - 1 31 | b4 | What piece is on e1? | Empty | occupancy |
6k1/p4ppp/3p4/8/q7/4B3/5rPP/3R1K2 w - - 0 27 | c2f2 | Is the White king in check? | Yes | check |
rnb2r1k/p1p2p1p/3p4/1p1BP3/3P1Rpq/3QB2P/PPP3P1/R5K1 w - - 2 20 | Rf6 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
2Q5/6B1/p5p1/3n3p/5p1k/8/4q3/7K b - - 11 73 | Qf3+ | What is the material balance in this position? | Black is up 4 pawns of material | material |
4r1kb/5p2/2P3pB/1Ppq1b2/2Q4p/1K2p2P/1P2BPP1/4R2R b - - 1 32 | Bc2+ | Identify any Black knight outposts on the board. | b4, d4 | outposts |
1rb1r1k1/1pqn1p1p/p2p2p1/2pPb2n/P3P3/N1N2P1P/1P2B1PB/R1Q2R1K w - - 7 21 | f4 | What is the material balance in this position? | Equal | material |
2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - 1 21 | Bxg7 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
rn4nr/pkp5/1p6/7p/1P2QP1P/8/P2B4/bN2K1N1 b - - 4 25 | f5e4 | Identify any White knight outposts on the board. | e5 | outposts |
rn2k2r/pp2npp1/q3p3/3PP2p/1b1p3P/5N2/PPQN1PP1/R1BR2K1 b kq - 0 13 | d3 | What is the material balance in this position? | Equal | material |
6k1/1p6/p2p4/PbpP3p/4BPpP/8/1P3P1K/8 b - - 0 37 | Bc4 | What is the material balance in this position? | Equal | material |
r1b1nrk1/pp1nq1bp/3p4/2pP1p2/2P1pPP1/2N5/PP2BN1P/R1BQ1RK1 b - - 1 14 | Bxc3 | Is the move from b7 to b6 legal? | Yes | legality |
rnbqkbnr/1ppppppp/p7/8/8/P7/1PPPPPPP/RNBQKBNR w KQkq - 0 2 | c4 | Identify any Black knight outposts on the board. | None | outposts |
7R/4kppp/p3pn2/3p4/8/b7/P1r3KP/7R w - - 3 29 | c1c2 | Is the Black king in check? | No | check |
r5k1/pb1p1ppp/1p3b2/1N1p4/3P4/8/PPP2PPP/4RBK1 w - - 0 19 | c3 | What piece is on d7? | Black Pawn | occupancy |
2r1q1k1/pp4p1/4Pn1p/3P4/3Bn3/8/PP2Q1PP/R4RK1 w - - 3 25 | g5e4 | What is the material balance in this position? | White is up 4 pawns of material | material |
rnbqk2r/pp3ppp/4pn2/3p4/8/B1P2N2/PP1p1PPP/R2QKB1R w KQkq - 0 9 | Qxd2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
b4r1k/5r1p/2ppq1pQ/2b1p3/1pP1PPN1/7P/P5P1/B1R2R1K b - - 0 26 | Kg8 | Is the move from h8 to c8 legal? | No | legality |
1rb2rk1/1p1n1p2/p1pp1npQ/q2Pp2p/P3P2P/2N2PN1/1PP3P1/2KR1B1R b - - 2 14 | Rd8 | Identify any Black knight outposts on the board. | None | outposts |
2rqr1nk/pn2b1pp/1p1pPp2/2p2PB1/5N1P/2N3Q1/PPP3P1/2KR3R b - - 1 1 | fxg5 | Does Black have any passed pawns? | No | structure |
r1bq1r2/ppp1bkn1/4ppp1/4B1P1/3P2P1/P2B3Q/1PP2P2/R3K2R w KQ - 2 18 | Qh7 | Is the move from e1 to e2 legal? | Yes | legality |
2q1kr2/6Q1/p4p2/bprPp3/1P3P2/7p/P1P3B1/1K5R w - - 1 30 | Be4 | Identify any Black knight outposts on the board. | f4 | outposts |
8/pp2k1p1/4pp2/1P6/8/P3P1P1/6Kb/2B5 b - - 0 34 | Bxg3 | Is the move from h2 to g3 legal? | Yes | legality |
r2q1rk1/1bp1bppp/p2p4/1p1n1NB1/4P3/1P5P/1PP2PP1/RN1QR1K1 w - - 0 1 | Qxd5 | What piece is on g1? | White King | occupancy |
2Q5/4K3/1p3b2/1P6/3k1r2/8/7P/8 w - - 1 7 | Ke6 | Is the Black king in check? | No | check |
2b4r/pp2bkp1/6q1/4p2Q/5P2/1P6/PBP3PP/R5K1 w - - 0 25 | Qxe5 | Does Black have any passed pawns? | No | structure |
8/5k2/3K3P/1p6/b1p5/P1P1B3/1P6/8 w - - 0 1 | Bd4 | Is the White king in check? | No | check |
4k2r/1R3p2/2p1b2p/6p1/3Pp3/r5P1/5PNP/5RK1 w k - 0 27 | a8a3 | Identify any Black knight outposts on the board. | b5, d3, d5 | outposts |
6R1/2p5/p3kp2/2Pp2n1/4p1P1/2K1P3/6r1/8 b - - 3 36 | g6g8 | What is the material balance in this position? | Black is up 5 pawns of material | material |
1r1rbnk1/p1b1qppp/2p1p3/N1Pp4/3P1P2/P1BBP3/6PP/2RQ1RK1 w - - 7 20 | Qa4 | Does White have any passed pawns? | No | structure |
5QK1/8/8/8/8/3p4/2k5/8 b - - 0 1 | d2 | Is the White king in check? | No | check |
r2qkb1r/pp1n1pp1/2p1pn1p/7P/3P4/3Q1NN1/PPPB1PP1/2KR3R b kq - 3 12 | Be7 | Are there any open files in this position? | No | files |
8/k7/2n3p1/p1K2p1p/b3p2P/N3P1P1/4BP2/8 b - - 15 81 | Nb4 | Does Black have any passed pawns? | Yes: a5 | structure |
8/2bq1Bkp/6p1/5n2/3P4/1Q3P1R/3B1PKP/r7 b - - 2 41 | Qe7 | Does Black have any passed pawns? | No | structure |
2k5/p4p2/1p1Bp3/P3P3/4bPP1/4K3/2P1BQ2/4n2q w - - 3 38 | Bf1 | Does White have any isolated pawns? | Yes: a5, c2 | structure |
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