fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/4kp2/4r3/p4K2/8/8/r7/2R5 w - - 0 42 | a7a5 | What is the material balance in this position? | Black is up 7 pawns of material | material |
r2q1rk1/3bNppp/p1n5/1p2pP2/8/7P/PPP3P1/2KRQB1R b - - 0 22 | d5e7 | Is the Black king in check? | Yes | check |
6k1/8/p5b1/1p6/3B1p2/2P4P/PP3K2/8 b - - 0 34 | Bb1 | Identify any Black knight outposts on the board. | e3 | outposts |
5r2/pp4pp/4k3/2p1Q3/8/8/P1P3PP/R6K b - - 0 23 | e1e5 | Is the Black king in check? | Yes | check |
r5k1/pp1q2b1/3Pp1Q1/2p1prN1/2P5/8/PP4P1/n1BK3R w - - 0 22 | Rh8+ | Does White have any passed pawns? | Yes: d6, g2 | structure |
r1bk1bnr/6pp/p3pp2/1p4B1/2p1P3/1BP5/PP3PPP/RN1R2K1 b - - 1 12 | f1d1 | Is the Black king in check? | Yes | check |
2r1kb1r/1bqnpppp/pp1p1n2/8/2PNP3/1PN3P1/P3QPBP/R1B2RK1 b k - 0 11 | e6 | Does Black have any isolated pawns? | No | structure |
r1b2k1r/ppp1n1pp/3p4/5q2/3n4/1BB5/P4PPP/R2QR1K1 w - - 0 16 | Qxd4 | What piece is on h3? | Empty | occupancy |
r1bq1rk1/pp3ppp/2n1pn2/2bp4/2P2B2/4PN2/PP2BPPP/RN1Q1RK1 w - - 1 9 | Nc3 | What piece is on a3? | Empty | occupancy |
r1b5/ppppk2p/2n2n2/5r2/8/5P2/PPPP2PP/RNBK1B1R w - - 0 13 | Bd3 | Does Black have any passed pawns? | No | structure |
r1r5/7k/3R3p/8/3B4/8/P5PP/5RK1 b - - 0 29 | g6d6 | What is the material balance in this position? | White is up 5 pawns of material | material |
2r3r1/1p3p2/4bBpk/1BqpP1Rp/P1n4P/3Q4/5PP1/4R1K1 w - - 8 36 | Rd1 | Is the Black king in check? | No | check |
r2qkbnr/pp2pppp/2n5/2ppPb2/3P4/2P2N2/PP3PPP/RNBQKB1R b KQkq - 2 5 | e6 | Is the move from d8 to c8 legal? | Yes | legality |
r2q1rk1/ppn2p1p/1bp3p1/3pP1N1/3P1P2/2P1B3/P1BQ2PP/5RK1 b - - 0 20 | f6 | Are there any open files in this position? | No | files |
4krr1/pp1b1p2/4nB1p/6p1/4P3/P1PB3P/1PP2RPK/3R4 b - - 8 22 | g4 | Is the move from e6 to c7 legal? | Yes | legality |
rnb1k2r/pp2bppp/4pn2/1P6/2N2B2/P4N2/4PPPP/R3KB1R w KQkq - 1 13 | Nd6+ | What piece is on a3? | White Pawn | occupancy |
4rr1k/7p/1q1pb3/1p2pp2/5P2/2P1NR2/1P1Q2PP/R6K b - - 6 26 | Bc8 | Identify any White knight outposts on the board. | b4 | outposts |
rnbq1rk1/1pp2ppp/4pn2/p2p4/1bPP4/5NP1/PP1BPPBP/RN1Q1RK1 b - - 1 7 | Be7 | Does Black have any passed pawns? | No | structure |
3r4/ppn2pk1/2pq2pp/5p2/2PP3P/1P2QB2/P4PP1/3R2K1 b - - 0 27 | f4 | What piece is on f5? | Black Pawn | occupancy |
4r1k1/1p2qpbp/pNrpbnp1/4n3/3BPN2/1P1B3P/P1P2QP1/3R1R1K b - - 8 20 | Qc7 | Is the move from c6 to c5 legal? | Yes | legality |
8/5k2/8/3K1Pp1/4p1P1/3n3P/3B4/8 b - - 5 54 | Nf2 | Are there any open files in this position? | Yes: a, b, c, d | files |
rnb2rk1/pp3ppp/4pn2/2bq4/8/3B1N2/PPPNQPPP/R1B1K2R b KQ - 5 8 | Nbd7 | Is the move from f7 to f7 legal? | No | legality |
1k4r1/5p2/1R2pP2/3pN2p/3P4/P6P/1Pr2PPK/8 b - - 0 37 | b3b6 | Is the Black king in check? | Yes | check |
2K5/k1PR4/8/1p5r/8/8/8/8 w - - 1 83 | Rd6 | Is the a-file open, semi-open, or closed? | open | files |
r2qr1k1/1p3pbp/pn1p2p1/8/2p1BP2/4B1PP/PPPQN2K/R3R3 b - - 0 20 | Rxe4 | Is the move from b6 to d5 legal? | Yes | legality |
rnbqkb1r/pp2pppp/3p1n2/2p5/4P3/2P2N2/PP1P1PPP/RNBQKB1R w KQkq - 1 4 | Be2 | Identify any Black knight outposts on the board. | None | outposts |
r1bqkb1r/5ppp/p2p1n2/1pn1p3/4P3/1BN1N3/PPP2PPP/R1BQK2R b KQkq - 3 10 | Nfxe4 | Are there any open files in this position? | No | files |
r2q1rk1/p5pp/bppbpn2/3p1p2/2PP4/1P3NP1/PB2PPBP/2RQ1RK1 b - - 5 15 | Qe7 | Is the move from a7 to c4 legal? | No | legality |
3Q4/Q7/2k2K2/2r5/6P1/6P1/8/8 w - - 9 69 | Qdd7# | What piece is on b8? | Empty | occupancy |
1r1r4/pb1q2kp/1p2ppp1/2pB1P2/6PP/2PPN3/PP4Q1/3R1RK1 b - - 0 24 | exd5 | What is the material balance in this position? | White is up 3 pawns of material | material |
8/4k1p1/5p2/2b2PP1/2B3KP/2n5/P7/8 b - - 5 55 | Bf2 | Is the move from f6 to g6 legal? | No | legality |
r2qkb1r/pb1n1ppp/1p2pn2/2pp4/2P5/1PN1PN2/PBQPBPPP/R3K2R w KQkq - 0 9 | d4 | Is the d-file open, semi-open, or closed? | closed | files |
r5k1/5pp1/ppb1nq1p/3p4/1P1P4/P5NP/B2Q1PP1/4R1K1 w - - 1 25 | Re5 | Does Black have any isolated pawns? | Yes: d5 | structure |
4rnk1/1q3pp1/3Nn2p/7P/1p2P1P1/1P1RQ3/r6B/4R2K b - - 3 51 | Qb8 | Identify any White knight outposts on the board. | d5 | outposts |
r1b1r1k1/ppp1bppp/6Q1/4N2R/2pq1PP1/8/PP4KP/R1B2B2 b - - 1 20 | hxg6 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnbqkb1r/pp2pppp/5n2/2pp4/3P1B2/2N1P3/PPP2PPP/R2QKBNR b KQkq - 0 4 | Qa5 | Are there any open files in this position? | No | files |
r5r1/1b1q1k2/p3pBpp/1pb1Pn2/4N1Q1/1B6/PP3PPP/4R1K1 w - - 0 24 | Nxc5 | Is the c-file open, semi-open, or closed? | open | files |
6k1/5pp1/p2p3p/1P6/r3b3/4B3/5PPP/2R3K1 w - - 2 31 | b6 | Is the move from f2 to d4 legal? | No | legality |
1Q6/5pk1/3p1qp1/2rP3p/p4p2/P2R1B1P/1P3P2/2K1b3 w - - 0 31 | Kb1 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
3n2k1/p2q1pb1/b3p3/2p3Qp/7P/1PN1P1P1/P4PBK/8 w - - 7 33 | Ne4 | Is the move from f2 to c5 legal? | No | legality |
1k1r3r/2p2p2/Q2bb2p/1N1p2q1/2nP2pN/3R2P1/PPP2PP1/1K2R3 w - - 9 23 | Rxe6 | What piece is on d6? | Black Bishop | occupancy |
5N2/ppp3p1/3p2k1/8/P1P5/1P6/2P2KPP/8 b - - 2 26 | h7f8 | Is the White king in check? | No | check |
rnb1kb1r/pppp2q1/5pp1/4p3/2B3QN/2P5/PPP3PP/R1B1K2R b KQkq - 1 10 | Kd8 | Does Black have any passed pawns? | Yes: e5 | structure |
1r3bk1/3RpR1p/pp2P1p1/8/8/1P6/P4PK1/8 w - - 5 45 | Kf3 | Is the move from d7 to f4 legal? | No | legality |
r2qkbr1/pb1n1p2/5n1p/1p1P4/2p3pP/2N3B1/PP2BPP1/R2Q1RK1 w q - 1 16 | Nxb5 | Identify any Black knight outposts on the board. | d3 | outposts |
r3kb1r/p1q1pppp/5n2/1B2N3/1P6/P3P3/1B3PPP/R2bK2R b KQkq - 0 13 | Nd7 | What is the material balance in this position? | Black is up 8 pawns of material | material |
2k3r1/pbppn3/1p2pb2/5p2/2PP1R2/1B4r1/PP1N1RP1/5K2 b - - 0 29 | c3c4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r1q2b1R/2p1nk2/p2p1r2/np1PpP2/8/2P1BQP1/PPB2PK1/7R w - - 3 31 | Qh5+ | Is the h-file open, semi-open, or closed? | open | files |
r2r4/1p5p/2bppk2/p1n2p2/P1P2P2/1PN3P1/2BR3P/3R2K1 b - - 3 27 | Bf3 | Is the move from c5 to a6 legal? | Yes | legality |
3r2k1/5pp1/1np4p/1p2N3/1b2n3/1P5P/1BP1NPP1/R5K1 b - - 0 25 | Rd2 | What is the material balance in this position? | Equal | material |
4r1k1/1pq2pbp/pNrpbnp1/4n3/3BPN2/1P1B3P/P1P2QP1/3R1R1K w - - 9 21 | Qg1 | Is the Black king in check? | No | check |
rn1qkb1r/pp3ppp/2p1pn2/3p1b2/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 0 6 | Nh4 | Is the move from b2 to b3 legal? | Yes | legality |
r2qk2r/pp1nppbp/3p1np1/2pP2B1/8/2P2N2/PP1NQPPP/R3R1K1 b kq - 3 12 | Rc8 | Does White have any isolated pawns? | No | structure |
2r3k1/pb1rnppp/1pq1p3/2p5/3P2Q1/P1P1P3/1B3PPP/2R1RBK1 w - - 2 19 | f3 | Does Black have any isolated pawns? | No | structure |
3kr3/2r1b1Q1/p1qp4/2n2P2/1p6/4R3/PPP1R1PP/2K5 b - - 0 26 | Qd5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rnb1kb1r/pp2pppp/5n2/q1pp4/3P1B2/2N1P3/PPP2PPP/R2QKBNR w KQkq - 1 5 | Qd2 | Is the move from g1 to a5 legal? | No | legality |
r5k1/ppN3b1/8/P1pPp2p/2N1PpPn/B2B3q/4Q1p1/R4RK1 b - - 0 27 | hxg4 | Is the White king in check? | No | check |
3r2rk/p1p5/1p1pqn1p/P3p3/3PPpPQ/2P2P2/2P5/R3RBK1 b - - 0 30 | Nxg4 | What is the material balance in this position? | Equal | material |
r2qk2r/1p2ppbp/p1bp1np1/3N4/4P3/4BQ1P/PPP2PP1/2KR1B1R b kq - 1 11 | Nd7 | Does White have any isolated pawns? | No | structure |
r1b2rk1/4b1pp/pBpppn2/q7/4P3/1RN5/P1PQB1PP/5RK1 b - - 11 18 | Qe5 | Is the move from e7 to a7 legal? | No | legality |
r3k1n1/pbppQ2r/1pnbp3/8/4P3/3PB2P/PPPKB3/RN4NR b q - 0 15 | g5e7 | Is the Black king in check? | Yes | check |
r1bq1rk1/3n1pbp/2pQ2p1/1p6/4PPn1/1PN1B3/P3N1PP/3RKB1R w K - 1 15 | Bd4 | What piece is on e7? | Empty | occupancy |
3r2k1/p2R4/5p1p/2pB3p/3p4/3P2P1/PPP2P1P/4R1K1 b - - 10 25 | f7d7 | Is the Black king in check? | Yes | check |
4r1k1/r6p/1qp2pp1/p1p4n/2PpPPQ1/3P4/PP1B3P/1R3RK1 b - - 0 22 | Kh8 | Is the move from e8 to d8 legal? | Yes | legality |
7r/4k3/2p1pR2/p1r4b/2B1P3/PP4p1/1K4P1/5R2 b - - 1 36 | Re5 | Identify any Black knight outposts on the board. | None | outposts |
8/8/kB4r1/P7/8/6p1/3K1R2/8 w - - 0 58 | Rg2 | Does White have any passed pawns? | Yes: a5 | structure |
1k3bnr/3rqppp/1pNp4/8/4P3/5N2/PP3PPP/R1BQK2R b KQ - 0 13 | a7c6 | Is the Black king in check? | Yes | check |
r1bq1rk1/2p1bppp/p2p1n2/np2p3/4P3/2P2N1P/PPBP1PP1/RNBQR1K1 b - - 2 10 | c5 | What piece is on b7? | Empty | occupancy |
r1bq1rk1/pp3pb1/3ppnp1/2pPn3/2P1PP1p/2N1B3/PP2B1PP/R2QKN1R b KQ - 0 12 | Neg4 | Is the Black king in check? | No | check |
1r1q2k1/R3bp1p/6p1/3rp3/1PN5/1QP5/5PPP/R5K1 w - - 3 29 | Na5 | Does Black have any isolated pawns? | No | structure |
r6r/1p2PQ1p/p5p1/5b2/2P5/4n3/P2R2PP/2K3k1 w - - 0 29 | Re2 | Identify any White knight outposts on the board. | d5 | outposts |
r1n2rk1/1p3pp1/p4n1p/P3p3/4P1b1/2N1PN2/BP1R2PP/3R2K1 w - - 1 23 | Rc1 | Does White have any isolated pawns? | Yes: e3, e4 | structure |
r4rk1/p3bppp/bpn1pn2/q5N1/2B2B1P/P1N1P3/1PQ2PP1/2KR3R w - - 2 14 | Nce4 | Does Black have any isolated pawns? | No | structure |
8/6p1/5pPp/4kP1K/7P/8/8/8 b - - 1 52 | Kxf5 | Is the move from e5 to e4 legal? | Yes | legality |
rn2kbnr/pp2pppp/3p4/2p5/2P1P1q1/5N2/PP1P1PPP/RNBQK2R w KQkq - 1 6 | O-O | Is the move from e1 to f8 legal? | No | legality |
4r1k1/1R3p2/p1p2B2/5rP1/2p1bP2/4P3/P4K2/R7 w - - 3 37 | Rd1 | What piece is on b5? | Empty | occupancy |
8/8/6p1/5p2/1PPq4/8/P1Rk4/1K6 b - - 8 52 | c1c2 | Is the Black king in check? | Yes | check |
2k5/ppp2ppp/2n2n2/1BP1pN2/4P3/P1P2P2/rr4PP/1K5R w - - 4 23 | f2b2 | Is the White king in check? | Yes | check |
2kr3r/ppp1qppp/4b3/8/1nPP4/2N1PN2/PP1QB1PP/2K4R w - - 1 15 | e4 | Are there any open files in this position? | No | files |
8/7p/4k1P1/7P/8/2B5/1K2Pp2/8 b - - 0 2 | h6 | Is the move from f2 to f1 legal? | Yes | legality |
2rr2k1/1b1nqpp1/pp2pn1p/8/2PN4/bPN4P/P3QPP1/BB1R1RK1 b - - 1 21 | Bd6 | Identify any White knight outposts on the board. | None | outposts |
1r6/Q7/3q2kp/6p1/4Pp2/P7/1b3PPP/5RK1 b - - 3 31 | b7a7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk2r/ppp1bppp/2n2n2/4p3/2P5/3PBNP1/PP3PBP/RN1Q1RK1 w kq - 0 9 | Nc3 | Does Black have any passed pawns? | No | structure |
rnbqkb1r/ppp1nppp/3pp3/1B6/3P4/4PN2/PPP2PPP/RNBQK2R b KQkq - 3 4 | f1b5 | Is the Black king in check? | Yes | check |
4r1k1/2p2p1p/1nr5/pRpNp1p1/2P1P3/P4P2/6PP/3R2K1 b - - 5 23 | Nxc4 | Does White have any isolated pawns? | Yes: a3, c4 | structure |
r4n2/5pk1/1p3Np1/1P1P2P1/8/p3P3/8/R5K1 b - - 0 33 | a2 | Is the move from a3 to d2 legal? | No | legality |
8/k7/2P2p2/P7/1KP1P3/5p2/7P/8 w - - 1 45 | a6a7 | Identify any Black knight outposts on the board. | e5 | outposts |
r4r1k/3bn1bp/3p1pp1/1p1Pp3/p1p1P2q/P1P1NQNP/1P3PP1/1B1RR1K1 w - - 2 29 | Nc2 | Is the move from d1 to g6 legal? | No | legality |
2r5/p4pk1/1p5p/1P1N1n1P/3P4/8/1P3PP1/4R1K1 b - - 0 29 | Nxd4 | Is the White king in check? | No | check |
r1bqk1nr/p4ppp/2p1p3/2bp4/8/6P1/PPP1PPBP/RNBQ1RK1 w kq - 0 8 | c4 | What piece is on h8? | Black Rook | occupancy |
rn1q1rk1/pb2bppp/1p2p3/2p5/3PP3/P1PB1N2/2Q2PPP/R1B1K2R w KQ - 0 11 | O-O | Identify any White knight outposts on the board. | None | outposts |
6k1/1p1b2pp/8/3p4/1n4qP/Q5B1/P7/5BK1 b - - 0 37 | h6 | Does White have any isolated pawns? | Yes: a2, h4 | structure |
2kr1b1r/2p3pp/Q3p3/1pP1q3/8/8/P2p1PPP/R1B2RK1 b - - 0 17 | Kd7 | What piece is on d5? | Empty | occupancy |
r4r1k/2p3pp/p4q2/1pN1n3/4Q1b1/2P2N2/PPB2KPP/R1B5 b - - 2 18 | g6 | Are there any open files in this position? | Yes: d, e, f | files |
8/1pr1ppk1/r2p1bp1/p2P1q1p/P1P5/1P2BP2/3QR1PP/3R2K1 w - - 9 31 | Rf1 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
Q5k1/5pbp/6p1/1p2Pq2/2pP4/4BN1P/1P3PP1/4R1K1 b - - 1 23 | a2a8 | Is the Black king in check? | Yes | check |
2r3k1/1nqbbppp/3p1n2/1p1Pp3/1P2P3/3BBN1P/3Q1PP1/R4NK1 b - - 0 22 | Qc3 | Is the move from d7 to c6 legal? | Yes | legality |
r1bqkb1r/ppp2ppp/2n5/3n2N1/2Bp4/8/PPP2PPP/RNBQ1RK1 b kq - 1 7 | Be7 | What piece is on e6? | Empty | occupancy |
r7/5k1p/1p1n1pp1/2p1p3/p3P3/2P2PPP/P3K3/1R1N4 b - - 2 33 | Nc4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qr1k1/pp2ppbp/2p3p1/N2n4/PP1PpP2/4P3/1BP3PP/R2Q1RK1 w - - 4 15 | Qe1 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
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