fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r4k1r/pp1q2pp/3bpp2/2p3B1/3P2Q1/2P5/PP3PPP/R3K2R w KQ - 0 14 | O-O-O | What is the material balance in this position? | Equal | material |
r3r1k1/p4ppp/1p1q2n1/P1pP1b2/2P5/1Q3N1P/5PP1/R1B2RK1 b - - 0 17 | Rab8 | Is the White king in check? | No | check |
6r1/1p2nrp1/p1n1k1Rp/3pPp1P/P1pP1P1B/2P1NB2/2PK4/8 b - - 1 35 | Nxg6 | Are there any open files in this position? | No | files |
8/n3P3/6kP/3p1pB1/2p1n1p1/2P1K3/2P3P1/8 b - - 2 46 | Nd6 | Does White have any passed pawns? | Yes: e7, h6 | structure |
2r1r1k1/2qb1p1p/p1n1nQpB/1p2p3/2p1P3/2P2N1P/PPB2PP1/3RR1K1 w - - 12 28 | Nh2 | Does Black have any isolated pawns? | No | structure |
6k1/8/7K/6P1/8/8/8/8 w - - 1 14 | Kg6 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/8/Np1b4/1P6/P1k5/4K3/8 b - - 1 1 | Ba8 | Is the move from c3 to b8 legal? | No | legality |
r1b1k2r/pp3p1p/2p2Q2/q4N2/2p2n2/6N1/1PP1KPPP/3R4 w - - 5 23 | Kf3 | What piece is on b5? | Empty | occupancy |
r3q1k1/1p4p1/p1bpp3/P1n3P1/1n1B3Q/2N5/1PP3PP/5R1K w - - 2 27 | Bxg7 | Identify any White knight outposts on the board. | None | outposts |
rnbqkbnr/1p1ppppp/p7/2p5/4P3/2P2N2/PP1P1PPP/RNBQKB1R b KQkq - 0 3 | d5 | Are there any open files in this position? | No | files |
2qrr1k1/p1p2pp1/1pnb3p/8/2P1b3/2B2NPP/PQP2PBK/3RR3 b - - 1 21 | Qf5 | What is the material balance in this position? | Equal | material |
k2K4/1p6/1P6/4Q3/q7/8/8/8 w - - 6 5 | Qh8 | Is the c-file open, semi-open, or closed? | open | files |
r1b1k1nr/p2q1pbp/3p2p1/8/1p1NP3/8/1BPN1PPP/R2QR1K1 b kq - 2 13 | Bb7 | Is the move from g7 to h4 legal? | No | legality |
r1bqkb1r/pp2pppp/2p2n2/2p5/4P3/3P1N2/PPP2PPP/RNBQK2R b KQkq - 0 5 | Bg4 | Identify any Black knight outposts on the board. | None | outposts |
1r1q1rk1/p1p1bppp/b3p3/4P3/2BPNn2/P4N2/1PQR1PPP/5RK1 b - - 0 18 | Rxb2 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k2r/1bqnbppp/p2ppn2/6B1/2p1PP2/1N3Q2/P1P3PP/1K1RRB2 w k - 0 17 | Qc3 | Does White have any isolated pawns? | Yes: a2, c2 | structure |
r1q1k3/1b2bp2/p2p2p1/4n3/1P1NP2r/2P1Q3/2B1N1RP/5R1K b q - 4 29 | Qh3 | Is the White king in check? | No | check |
r1bq1rk1/ppnn3p/3p4/2pP1pN1/2PbpP2/P1N5/1PQBB1PP/R3R1K1 w - - 2 17 | Kh1 | Does White have any isolated pawns? | No | structure |
rn1qkb1r/4pp1p/b2p1np1/2pP4/8/2N3P1/PP2PPBP/R1BQK1NR b KQkq - 1 8 | Bg7 | What is the material balance in this position? | White is up 1 pawn of material | material |
5rk1/2q2ppp/p7/8/2p1pB2/2P5/PP2QPP1/3R1K2 b - - 0 30 | e3f4 | What is the material balance in this position? | White is up 2 pawns of material | material |
3R4/pK6/6k1/5p2/6p1/8/8/8 b - - 0 24 | f4 | Does Black have any isolated pawns? | Yes: a7 | structure |
5Q1k/1b2p1bp/p2p2p1/1p5n/1P2PP2/P4N2/3BN1PP/7K b - - 0 25 | Bxf8 | Is the White king in check? | No | check |
4r1k1/p1r2pbp/3q2p1/2np4/P7/4P2P/Q2NBPP1/1RR3K1 b - - 1 25 | d4 | What piece is on c1? | White Rook | occupancy |
2kr2r1/ppbnqpp1/7p/1PpBPb1P/3P4/P3BQ2/5PP1/R4RK1 b - - 0 21 | Kb8 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
3rq1k1/pp1rb1pp/2p1p3/2P1Pp2/P2P4/NP1R1QP1/6KP/3R4 w - - 5 4 | Nc4 | Is the White king in check? | No | check |
r1bqk1nr/pp1pppbp/2n3p1/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 1 6 | Be3 | Identify any Black knight outposts on the board. | None | outposts |
3r1rk1/ppp1bppp/8/8/4n3/3N4/PPP2PPP/R1B1R1K1 b - - 1 13 | f5 | What is the material balance in this position? | Equal | material |
r2q1rk1/pbn2pbp/1p1p1np1/2pP4/P1P2B2/2N2N2/1PQ1BPPP/R3R1K1 b - - 0 13 | Re8 | Is the move from g8 to b7 legal? | No | legality |
2R3Q1/1p2r3/p3pk2/P2p1p2/3P1P2/1P2PKr1/q7/8 w - - 0 49 | Qxg3 | Identify any Black knight outposts on the board. | None | outposts |
r1bqkb1r/pp3ppp/2nppn2/1N6/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7 | Bf4 | Is the move from b5 to d6 legal? | Yes | legality |
3r2k1/5ppp/b1p1p3/4q3/8/4PP2/2QN1KPP/7R b - - 2 23 | e1f2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rr1q1bk1/2nb2p1/3p1pNp/pppPp1nP/2P1P3/1P3NR1/P1B2PP1/R1BQ2K1 w - - 0 27 | a4 | Is the move from g1 to f1 legal? | Yes | legality |
Q7/8/8/6pP/2q5/5K2/2n2N2/1k6 w - - 7 47 | Qe4 | Is the move from a8 to a5 legal? | Yes | legality |
5rk1/5Rp1/3p4/3B2qp/R3P1n1/8/P5PP/2r2Q1K w - - 0 32 | Qxc1 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b3Q1/pp6/1kn4R/2b5/4pQ2/6K1/5P2/5qN1 w - - 0 27 | Qb3+ | Identify any Black knight outposts on the board. | d3, f3 | outposts |
r2qk2r/1p1bbppp/p1n1pn2/3pN3/P2p1B2/2PBP3/1P1N1PPP/R2QK2R w KQkq - 0 10 | exd4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r7/1p1b2bk/1p1p3p/3Pp3/p1P1P3/P1P5/5PP1/1R3RK1 b - - 2 29 | Ra6 | Are there any open files in this position? | No | files |
6k1/pp4pp/2p2q1B/n7/4p3/2PP2Q1/P1P5/5K2 w - - 1 23 | e7f6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r4r2/2pbqpkp/pp2pnp1/6B1/3P3Q/3B4/PPP2PPP/R4RK1 w - - 2 17 | Bh6+ | Identify any Black knight outposts on the board. | None | outposts |
r3k1r1/1b1nbp1p/1q2p3/1B6/P2p1p1B/5N2/1P2QPPP/R1R3K1 b q - 0 20 | Bxh4 | Is the Black king in check? | No | check |
r2q1rk1/1p3pbp/2npp1p1/2p5/2PPb3/pPB1PNP1/P3QPBP/R2R2K1 w - - 0 15 | Rac1 | Identify any White knight outposts on the board. | None | outposts |
4k3/3n1p1p/2qBpp2/8/3p2r1/Q1b2NP1/5P1P/2R3K1 b - - 3 26 | Qxf3 | Identify any Black knight outposts on the board. | c3, d5 | outposts |
B2k1b1r/5ppp/pq1pp3/1p3NP1/5P2/P7/1PPB3P/2KR3R b - - 0 8 | exf5 | What piece is on b3? | Empty | occupancy |
8/3k4/K6R/P1P5/7p/8/8/r7 w - - 12 69 | Kb7 | Is the move from a5 to a3 legal? | No | legality |
r7/3k4/3p2p1/ppq1p3/4K3/2p2P2/4r1PP/8 w - - 0 43 | d2e2 | Is the White king in check? | Yes | check |
5rk1/1p4p1/p2b3p/1np5/3p4/1P3P2/PK1B1P1P/3RR3 b - - 1 29 | Rxf3 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r1b1k2r/pp2pp1p/qn4pB/2pPN3/2P1n3/2P4P/P3BPP1/R2Q1RK1 b kq - 2 15 | f5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
1k6/1p6/pKpN1p2/P5p1/1P2P1n1/8/8/8 w - - 2 51 | Nxb7 | Does White have any isolated pawns? | Yes: e4 | structure |
2r2r1k/7p/8/p2P1n2/2p1p3/P1N5/1P4KP/2RR4 w - - 0 35 | Kh1 | Is the move from d5 to d6 legal? | Yes | legality |
3q1r2/2pnRp1k/1p1pn1pp/pP1N4/8/2Q3PP/PP3P2/3R2K1 w - - 8 31 | Rxd7 | Is the move from e7 to f7 legal? | Yes | legality |
r2qnrk1/3nbp1p/5p2/3pp1P1/ppb1P3/4B3/PPPQN2P/1KNR1B1R w - - 0 19 | gxf6 | What piece is on a1? | Empty | occupancy |
rnbqk1nr/2b4p/p4PpP/1p1p4/6P1/2P5/1B1PP1B1/RN1QK1NR b KQkq - 0 16 | e5f6 | Identify any White knight outposts on the board. | d4 | outposts |
r1b1kb1r/pp3ppp/2n1pq2/2pP4/8/1PN2N2/P1PP1PPP/R2QKB1R b KQkq - 0 7 | e4d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b2rk1/pp1n2p1/4pp2/7Q/8/2B1bN2/PPP2q1P/1K2R1R1 w - - 8 22 | Qg4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
1rr5/3qnb1k/3p1b1p/1p1P1Pp1/pP2Pp1P/2NP4/3BQ1B1/2R2R1K w - - 1 26 | Qg4 | What is the material balance in this position? | Equal | material |
r2q1rk1/p1p1bppp/2p2n2/3pp1B1/2P3b1/2N2NPP/PP2PPB1/R2Q1RK1 b - - 0 11 | h2h3 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1bqkb1r/pp1n1ppp/3pN3/4P3/8/2PB4/P1PBQPPP/R3K2R b KQkq - 0 11 | fxe6 | Identify any Black knight outposts on the board. | c5 | outposts |
r4rk1/1p2bppp/1q2p3/pNnpP3/P7/4B3/1P3PPP/R2QR1K1 w - - 1 18 | Qg4 | Is the move from d1 to d3 legal? | Yes | legality |
r1b2rk1/pp1nqpp1/2p1p2p/8/2BP4/2R1PN2/PP3PPP/3Q1RK1 b - - 2 13 | b6 | What is the material balance in this position? | Equal | material |
4bk2/R4pp1/1B1b4/5PP1/6K1/1N3N2/P5n1/7r b - - 0 38 | Bc6 | Is the White king in check? | No | check |
3r4/pp2nkp1/4pp1p/3n4/P2P4/5N2/KP1B1PPP/2R5 b - - 2 28 | g5 | Are there any open files in this position? | Yes: c | files |
8/8/8/3k4/3b1q2/8/4K3/8 w - - 8 56 | f6f4 | What is the material balance in this position? | Black is up 12 pawns of material | material |
3r1b2/3bnpk1/5npp/pNp1p3/P1P5/4B1PP/4PPBN/1R4K1 b - - 2 25 | Rc8 | Is the b-file open, semi-open, or closed? | open | files |
2r1r1k1/8/2R5/3P4/5p2/N1Bb4/5bBP/7K b - - 2 43 | Bc5 | Identify any White knight outposts on the board. | c6, e6 | outposts |
5rk1/p2bn1pp/q2b1p2/1p1p4/2rP2P1/3B1P2/PP1BNQ1P/RK5R b - - 0 24 | f5 | Are there any open files in this position? | Yes: c, e | files |
r3k2N/ppp1q1pp/3p4/2b1p3/2B1PpP1/2NP1b2/PPPQ1P2/R1B2RK1 b q - 0 14 | Qh4 | Is the move from a8 to c8 legal? | Yes | legality |
5k2/p1p4R/1p4P1/3p1pK1/P2P1r2/8/8/8 b - - 1 38 | Re4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2r5/pp2p1kp/3p2nN/6Q1/4P3/1BP5/PPKR2P1/1q5r w - - 10 31 | g1b1 | Is the Black king in check? | No | check |
r4rk1/2pq2pp/p1n1b3/1p1pp3/8/2P2NQ1/PPB3PP/R1B2NK1 b - - 2 16 | e4 | Does Black have any passed pawns? | Yes: e5 | structure |
1q2kbnr/r4ppp/p3p3/1p1Q4/2pP4/4P1P1/1P3P1P/R3KBNR w KQk - 0 14 | e7e6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5nk1/R4p1p/8/1p1pr1pq/5K2/2P3P1/1PBNr3/5R2 w - - 0 29 | g6g5 | Is the Black king in check? | No | check |
8/1k5p/1pb5/2p5/2P3pP/2P2pP1/3r1P2/4RBK1 b - - 1 47 | Rc2 | Identify any White knight outposts on the board. | None | outposts |
2Q3k1/7p/6p1/5nP1/1r5P/8/8/6K1 b - - 1 46 | Kf7 | Is the c-file open, semi-open, or closed? | open | files |
2kr1bnr/pbp1q2p/1pp5/6p1/6B1/2P5/PP1PP2P/R1BQK1NR b KQ - 0 15 | f3g4 | Is the Black king in check? | Yes | check |
r2r1bk1/1q3ppp/p2p4/1p1Np3/PP2P3/2PQ4/5PPP/R2R2K1 w - - 1 3 | Ra2 | Is the Black king in check? | No | check |
1r4k1/7p/b3pP2/2p1b3/4P3/2N1p3/PP4R1/2K4R b - - 0 27 | Kf7 | Identify any Black knight outposts on the board. | None | outposts |
rnb1kbnr/pp2pppp/8/3q4/1p6/8/PBPP1PPP/RN1QKBNR w KQkq - 0 5 | c4 | What piece is on a7? | Black Pawn | occupancy |
rnbqkb1r/pp3ppp/4pn2/2p5/3pP3/2P2N2/PP1PNPPP/R1BQKB1R w KQkq - 1 6 | e5 | Does White have any isolated pawns? | No | structure |
r2q1rk1/1b2bppp/p1n1p3/1p6/1P2B3/P3PN2/1B3PPP/R2Q1RK1 b - - 0 14 | f5 | What piece is on b7? | Black Bishop | occupancy |
r1bqr1k1/p1n2pbp/3p1np1/1N1P4/2p1PP2/P2B4/1P1N2PP/R1BQ1RK1 w - - 0 14 | Bxc4 | Does Black have any passed pawns? | No | structure |
r5k1/pp1qnrp1/3p3p/2pPp3/2P1B3/2P1BPPb/P4R1P/3QR1K1 b - - 0 22 | Bf5 | What piece is on d7? | Black Queen | occupancy |
rnbqk2r/pp2ppbp/3p1np1/2p5/2PP4/1P3NP1/PB2PP1P/RN1QKB1R b KQkq - 0 6 | Ne4 | What is the material balance in this position? | Equal | material |
3r2k1/5p2/1q4p1/pB6/P6p/2Q1bP2/6PP/2B2K1N b - - 0 34 | Rd1+ | Is the move from d8 to d2 legal? | Yes | legality |
r2q1r2/ppp2pk1/2n4p/3NP1pn/2B3b1/3Q2B1/PP3PPP/R4RK1 b - - 2 15 | Nxg3 | Identify any White knight outposts on the board. | f6 | outposts |
3r2k1/2pr1pp1/p1Qbp2p/7P/1p6/2N5/PPP5/3R1RK1 w - - 0 26 | b5b4 | What is the material balance in this position? | White is up 6 pawns of material | material |
8/p5R1/8/3Qb1kp/1P4n1/8/P5PP/5K2 b - - 4 39 | e7g7 | Is the Black king in check? | Yes | check |
2r1k2r/1p1n1p1p/p3pp2/qB6/3NP2P/8/P4PP1/3Q1K1R w k - 0 16 | Bxd7+ | Are there any open files in this position? | Yes: c, d | files |
1R2Nk2/5p2/3K2p1/1P1P4/8/r7/8/6r1 w - - 4 47 | b6 | Is the Black king in check? | No | check |
rnb1k2r/pp3ppp/3b4/q2pN1B1/8/3B4/Pp3PPP/1R1Q1RK1 w kq - 1 13 | Nxf7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
1r4k1/5nb1/p2p2bp/2p2p2/P1P2B2/1p1P3P/1P1RN1PK/1B6 w - - 8 37 | d4 | Is the White king in check? | No | check |
rbnqbkr1/pp1ppppp/6n1/2p5/2P5/1N4N1/PP1PPPPP/RB1QBKR1 b KQkq - 1 3 | Be5 | Is the move from b7 to f4 legal? | No | legality |
rnbqk2r/pp3ppp/2pbp3/3p4/2P3n1/1P2PN2/PB1P1P1P/RN1QKB1R w KQkq - 0 7 | Rg1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
q1r2rk1/5p2/4p1p1/1p2P3/2b4P/P1Q2B2/5PP1/2R1K2R b K - 3 25 | Bd5 | Does White have any passed pawns? | No | structure |
2r1kb1r/2q2pR1/p2pbP2/1p5p/3N4/P3Q3/1PP4P/2KR1B2 w k - 0 23 | Nxe6 | What piece is on f4? | Empty | occupancy |
2r1rnk1/pp2qppp/2p1b1n1/3p4/1P1P4/P2BPNNP/2Q2PP1/R1R3K1 w - - 7 19 | Nf5 | Are there any open files in this position? | No | files |
r1nq4/pp1b1rkp/2pp2p1/4pP2/3N4/2N5/PPPQ2PP/3R1RK1 w - - 0 20 | Ne6+ | What piece is on g7? | Black King | occupancy |
r2qkbnr/1p2pppp/p1n3b1/3pN3/3P2PP/2N5/PPP2P2/R1BQKB1R b KQkq - 0 9 | Nb4 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r4rk1/p4ppp/2pq4/3p4/NP2p3/P5P1/2P2P1P/R4QK1 b - - 0 19 | b2b4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2r3k1/5b2/7p/5Pp1/2BP4/p1b1P3/1N6/1KR5 w - - 2 40 | Rxc3 | What is the material balance in this position? | Equal | material |
3k3r/pp1Pqp1p/5b2/3p1Q2/8/3B4/PP5P/5R1K b - - 0 30 | Be5 | Identify any Black knight outposts on the board. | e4 | outposts |
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