fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r2q1rk1/1b1n1ppp/1p1b4/1ppP2P1/8/1P2PN2/PBQ1BP1P/R3K2R b KQ - 0 15 | Qe7 | Does White have any isolated pawns? | No | structure |
2kr3r/pp3ppp/1n6/4np2/2PBq3/P1P3P1/4B2P/R2Q1RK1 w - - 3 18 | c5 | Identify any Black knight outposts on the board. | e4 | outposts |
r1b1k2r/1p3pbp/p2qpp2/2pP4/8/2P1N3/PP3PPP/R2QKB1R b KQkq - 0 13 | b5 | Is the Black king in check? | No | check |
8/1p3ppk/1B2b2p/P1p5/P7/5R1P/2r2PPK/8 b - - 3 41 | c4 | Is the move from c5 to g1 legal? | No | legality |
rn1q1r2/pb2ppk1/1p5p/6p1/2BpP3/2P3B1/P4PPP/RQ2K2R w KQ - 0 18 | O-O | Are there any open files in this position? | No | files |
4r3/5rk1/pq1p1pp1/3P4/4P3/5Q1P/P3R1P1/5R1K w - - 2 32 | e7f7 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/1p2bk2/pR1pR3/PP1P1pp1/2r4p/5P1P/6K1/8 w - - 0 39 | Rxb7 | Does Black have any isolated pawns? | Yes: d6 | structure |
6k1/1p4pp/4r3/1N3p2/1P2q3/P3n2P/2PQ2P1/4R2K b - - 1 38 | f4 | What piece is on h1? | White King | occupancy |
br3rk1/6bp/p2pp3/N1p4q/2PnP1p1/2N1Bn2/RP1QBPPP/R6K w - - 4 28 | gxf3 | What piece is on f3? | Black Knight | occupancy |
2k4r/1p6/p1p1b3/P1P1P1p1/4Q1P1/4BP2/4KR2/7q b - - 6 46 | Rd8 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/p4pk1/1p2pnpp/8/6P1/2P2K1P/P1P5/8 b - - 0 34 | g3f3 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r4r1k/6pp/1pP2b2/1B2q3/2QNp3/3n4/3R1PPP/4R1K1 w - - 3 32 | Ne6 | Does White have any isolated pawns? | Yes: c6 | structure |
4rrk1/5ppp/p2b4/1p1Q4/3P4/2Pb2Pq/PP1B1P1P/RN2R1K1 w - - 3 19 | Na3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
4k2r/1p1b2pp/4p3/2Bp4/1P5q/p7/PnQ3B1/5RK1 w k - 0 32 | Qc3 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r1bqkb1r/pppp1ppp/2n2n2/1B2p3/8/1P2P3/PBPP1PPP/RN1QK1NR b KQkq - 2 4 | Bd6 | What piece is on a8? | Black Rook | occupancy |
r1b3k1/pp5p/2pbp3/3p3n/2PPp1p1/PP2P1q1/1B1QR3/1N1R1B1K b - - 3 22 | Bd7 | Does Black have any isolated pawns? | No | structure |
r2k4/1p1qb1rp/2pp4/p3p3/7P/P1BQ2P1/4RP1K/4R3 w - - 0 27 | c7c6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rnbq1rk1/pp1p1p1p/6pQ/3pP3/3P1B1N/8/PPP3PP/RN3K1n w - - 0 13 | Nf5 | Identify any White knight outposts on the board. | d6 | outposts |
4r1k1/Q3qppp/2p5/8/2p2P2/2P1P1P1/PR6/6K1 w - - 1 26 | Qxe7 | What is the material balance in this position? | Equal | material |
1r3bk1/3RpR1p/pp2P1p1/8/4K3/1P6/P4P2/8 w - - 9 47 | f4 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnbqkbnr/pppp1p1p/8/4N3/4PppP/8/PPPP2P1/RNBQKB1R b KQkq - 0 1 | Nf6 | Are there any open files in this position? | No | files |
N1bq1b1r/pp4p1/3p2k1/4p2p/2BnP1N1/6Q1/PPP2PPP/R3K2R b KQ - 0 16 | hxg4 | Are there any open files in this position? | No | files |
3r2k1/p4pp1/1q5p/8/8/5PPb/PP4BP/4QK1R b - - 1 26 | Bc8 | What is the material balance in this position? | White is up 1 pawn of material | material |
4rbk1/5p2/p2p3p/qp1PnNp1/4P3/2r2PP1/P3RPB1/1Q2R1K1 w - - 3 28 | Nd4 | Identify any Black knight outposts on the board. | a4, c4 | outposts |
r1bq1rk1/ppp2ppp/5n2/3p4/B2bP3/2N5/PPPP1PPP/R1BQK2R w KQ - 0 9 | e5 | What piece is on a6? | Empty | occupancy |
2r3k1/3q3p/p2pp3/7p/2P5/8/P2Q1PP1/4R1K1 w - - 0 30 | Qg5+ | Is the b-file open, semi-open, or closed? | open | files |
8/8/5p1p/1bk4P/1p1p1P2/3KP3/P7/3B4 w - - 2 70 | Kd2 | Does Black have any passed pawns? | No | structure |
r2q1rk1/p2pbppp/np2p3/3n2B1/3PN3/2P2N2/PP1Q1PPP/R3K2R w KQ - 0 12 | O-O | What is the material balance in this position? | Equal | material |
2r1r1k1/pb2qp1p/1pn2np1/3p2B1/8/P1NQ1N2/1PB2PPP/R5K1 w - - 0 18 | Nxd5 | What piece is on f2? | White Pawn | occupancy |
2br4/3n1ppk/1p1q1n2/p3p3/8/PP2P3/1B2QPPP/3R2K1 w - - 0 22 | Rxd6 | What piece is on b6? | Black Pawn | occupancy |
5rk1/pp1p2B1/4p3/8/1n1p1P2/8/PP4PP/5RK1 b - - 0 28 | Kxg7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
2q2rk1/5p1p/r5p1/8/2P1Q3/4P3/1P1R3P/1K1R4 b - - 0 34 | Ra8 | Is the Black king in check? | No | check |
2N5/Bp1r1p2/2p2pk1/3pn3/8/1PP2P1P/P4KP1/3R4 b - - 2 31 | d6c8 | What is the material balance in this position? | White is up 4 pawns of material | material |
rnbqkbnr/ppp3pp/8/3p1p1P/3PP3/8/PPP1P1P1/RNBQKBNR b KQkq - 0 5 | f3e4 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnb4r/pp1pkp1p/4pp2/2p5/4P3/8/PqPQNPPP/RN2KB1R w KQ - 2 11 | Qc3 | What piece is on a3? | Empty | occupancy |
rnbq1rk1/pp3ppp/4pn2/2bp4/2P2B2/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 8 | cxd5 | Is the move from d1 to e2 legal? | Yes | legality |
5rk1/3q1p1p/p4Qp1/1p6/1P1n2P1/P1B4P/2P2R2/5RK1 w - - 5 34 | e6d4 | What is the material balance in this position? | White is up 5 pawns of material | material |
r1b5/1p2q1k1/4p1p1/p1b5/P2p4/1BPPpQ2/1P4PP/R4RK1 w - - 2 27 | Kh1 | What piece is on h2? | White Pawn | occupancy |
2rrk3/p1q2p2/1p1b3Q/n2RN3/8/P7/5PPP/5RK1 w - - 12 28 | Re1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1k1r3r/pppq1pp1/8/3pPn1p/1P1N1P2/2PQ4/P5PP/R4RK1 b - - 1 17 | g6 | Is the White king in check? | No | check |
2br2k1/q4pp1/r2p2np/2p5/2P1P3/3PN1BP/1R3QPK/5R2 b - - 10 32 | Ra3 | Is the move from g8 to f8 legal? | Yes | legality |
r1bqk2r/pppp1p1p/6p1/2b1P3/2P5/2P3Q1/P4PPP/R1B1KB1R w KQkq - 0 11 | Bd3 | What is the material balance in this position? | Equal | material |
8/p7/2p5/3pR3/2PB3p/N1Pk1r1P/P7/6K1 b - - 0 38 | b3c4 | What is the material balance in this position? | White is up 6 pawns of material | material |
r4rk1/pp1b1ppp/2n1pn2/3Q4/3P4/5N2/PP1NBPPP/2R1K2R b K - 0 12 | exd5 | What piece is on b7? | Black Pawn | occupancy |
r2qr1k1/pp3p1p/8/3pBb2/2pPB1p1/P3P3/1PQ2PPP/R4RK1 b - - 0 17 | Bxe4 | Does White have any passed pawns? | No | structure |
8/2R5/1p1N4/p7/2P3p1/3k2rp/8/7K w - - 0 47 | c5 | Identify any White knight outposts on the board. | d5 | outposts |
r1bqk2r/p2p1pbp/1pnPpnp1/2p5/2P1P1P1/2N5/PP3PB1/R1BQK1NR b KQkq - 1 10 | e5 | Does Black have any isolated pawns? | No | structure |
r1bqk2r/pppn1ppp/2nbP3/1N1p4/5B2/8/PPP1PPPP/R2QKBNR w KQkq - 1 7 | f8d6 | What is the material balance in this position? | White is up 1 pawn of material | material |
2kr1b1r/ppp2ppp/5B2/6q1/4Q3/5P2/PPP3PP/R3K1NR b KQ - 0 12 | Qxf6 | Is the move from c8 to d7 legal? | Yes | legality |
1r1r1bk1/2q2pp1/7p/2ppn3/8/1PP1B3/2QR1PPP/3R1NK1 b - - 0 25 | Nc6 | Identify any White knight outposts on the board. | a4 | outposts |
2rr1bk1/p1n2pp1/1q2p2p/NPp1P2b/2B1NP2/P1Q3P1/7P/2R1R1K1 w - - 7 31 | Nc6 | What piece is on g3? | White Pawn | occupancy |
3r3k/p4R1n/1p2pb1B/2p5/2P5/5P1Q/PP5P/1K4r1 w - - 1 29 | Kc2 | Are there any open files in this position? | Yes: d, g | files |
2r3r1/1b2kp2/1q1p1p1b/4pP1p/p3P2Q/Pp1B1NP1/1PP1R2P/1K1R4 b - - 0 24 | Rc3 | Is the move from h6 to g5 legal? | Yes | legality |
r2q1rk1/pp2npbp/2pp1np1/P2Pp3/2P1P1b1/2N2NP1/1P3PBP/R1BQ1RK1 b - - 0 11 | cxd5 | Is the move from d8 to c7 legal? | Yes | legality |
r1bqr1k1/pp3pbp/2np1np1/2p1P3/2B2B2/2P1PN1P/PP1N1PP1/R2Q1RK1 b - - 0 10 | Nxe5 | Is the move from f6 to g4 legal? | Yes | legality |
rqb2rk1/1p2bppp/p2ppn2/4n3/3NPB2/1BN4P/PP2QPP1/2RR2K1 b - - 11 14 | b5 | Is the Black king in check? | No | check |
5r1r/1Q1P4/p7/2P4k/P6P/1P3p2/2P2K2/8 b - - 0 42 | Kxh4 | Is the move from f8 to b4 legal? | No | legality |
1r3k1r/p2b3p/2p3p1/1N1pP1Bn/8/7P/PP3PP1/R4RK1 w - - 2 27 | e7f8 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/6kp/2n1p1b1/1p2r3/4P3/2PB4/3K4/6Q1 w - - 10 49 | Qb6 | Does Black have any passed pawns? | Yes: h7 | structure |
rn1qkb1r/1p1b1ppp/p3pn2/8/3N4/4P3/PP2BPPP/RNBQ1RK1 w kq - 1 9 | e4 | Does White have any isolated pawns? | No | structure |
1rbq1k2/4p1bQ/2p2r2/p7/3P4/1P2PN2/P4PP1/1K1R3R w - - 2 22 | Rh5 | Identify any White knight outposts on the board. | a4, c4, c5, e5 | outposts |
2r3k1/1bqnrpbp/pp1pp1p1/6P1/Pn2PP2/1NN1B2R/1PP2QBP/5RK1 b - - 9 24 | Rce8 | Does Black have any isolated pawns? | No | structure |
4b3/4k3/4p3/p2pP3/2pP2B1/PrP1P1K1/5R2/8 w - - 13 39 | Rh2 | Does Black have any isolated pawns? | Yes: a5 | structure |
r2q1rk1/pp2bpp1/2n1pn1p/2pp1b2/8/1P1P1NP1/PBPNPPBP/R2QR1K1 w - - 0 10 | e4 | Is the move from g2 to h3 legal? | Yes | legality |
2rqbrk1/1p2bppp/p3pnn1/3pN1N1/3P4/PP1B2P1/1BP2P1P/R2QR1K1 w - - 3 16 | h4 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1b1r/ppp1pQpp/1n1k1n2/3P4/8/2N1B3/PP3PPP/R3KB1R b KQ - 3 13 | Nbxd5 | Is the move from f6 to h5 legal? | Yes | legality |
2r2rk1/1pq1bppp/p2p4/3Bn3/P2NPBb1/8/2P3PP/1R2QR1K b - - 0 19 | Nc6 | Does White have any isolated pawns? | Yes: a4, c2, e4 | structure |
q3kb1r/p4ppp/5n2/1p2pb2/1np5/N4NP1/PP2PP1P/R1BQK2R b KQk - 1 13 | Nd3+ | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r3k2r/1p3p1p/p4P2/2nR1b2/2B5/2N2Q2/PPP2P1P/2K1q3 w kq - 2 20 | Rd1 | Does Black have any isolated pawns? | Yes: f7, h7 | structure |
8/1p5p/1Pp3p1/1nP1p3/2K1k3/6PP/8/4R3 b - - 6 44 | f1e1 | Is the Black king in check? | Yes | check |
8/R4ppp/4pk2/1r6/5P2/3KP3/5P1P/8 b - - 0 28 | Rh5 | What piece is on b5? | Black Rook | occupancy |
r2qkb1r/pp3ppp/8/3Pn3/4Q3/2N2P2/PP5P/R1B1K2R b KQkq - 1 15 | Qh4+ | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/4qppp/p1bp1n2/1p6/1b1BP3/1P1QRN1P/1P1N1PP1/R5K1 b - - 9 20 | Nxe4 | Identify any White knight outposts on the board. | d5 | outposts |
4b1k1/pp2rnp1/3p1p1p/3Pp2B/4N3/4P3/PP3PPP/2R3K1 w - - 6 24 | Rc8 | Is the Black king in check? | No | check |
4r2r/3b1k2/3n1p2/1p1p2p1/p2P1nPp/P1PK1P1P/2P1N3/R3R3 w - - 1 29 | e6f4 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1b1k2r/2q1bp2/p2ppn1p/1p2n1p1/3NP3/P1N1Q1B1/1PP1BPPP/2KRR3 b kq - 0 14 | Rb8 | Is the White king in check? | No | check |
r1b1rk2/2n1b1qB/p6Q/1p1p4/7P/P3BP2/1PP5/2KR3R w - - 2 28 | Qh5 | Is the move from h6 to b6 legal? | Yes | legality |
4r1k1/q6p/p2PbQpB/4Pp2/8/1p4PP/1P5K/3R4 w - - 8 42 | Rd4 | Identify any White knight outposts on the board. | d6 | outposts |
8/6pp/1p2p3/1ppkP2r/1P2R3/P1KP3P/6P1/8 w - - 1 33 | a4 | Is the move from c3 to b3 legal? | Yes | legality |
rn3k1r/ppp2Bpp/3p3n/4p1B1/3PP1b1/2P5/P1P2PPP/R3K1NR b KQ - 0 9 | Kxf7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
3b4/1p3k2/2pn1pp1/1r1p3p/pN1P3P/P1P3P1/1P1NRPK1/8 w - - 12 40 | Kf1 | Is the move from b4 to c2 legal? | Yes | legality |
7k/ppnr1ppp/3Bn3/4P3/4p2P/P5PK/8/3R1R2 w - - 0 33 | Rfe1 | What is the material balance in this position? | Equal | material |
rnbqkbnr/p3pppp/2p5/1p6/P1pP4/4P3/1P3PPP/RNBQKBNR w KQkq - 0 5 | c7c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1q1rk1/3p2pp/p2Npb2/8/NpP5/5PP1/PP5P/R2QR1K1 w - - 3 18 | c5 | Does Black have any isolated pawns? | No | structure |
8/8/3B4/5K2/r6k/8/6R1/8 b - - 31 96 | Ra5+ | What is the material balance in this position? | White is up 3 pawns of material | material |
8/4N3/5k2/7K/1p5p/1Pr5/8/4R3 w - - 4 73 | Nd5+ | Is the move from e1 to h6 legal? | No | legality |
3rr3/2qp2k1/pp3ppN/3Rn3/2P5/1P2P1P1/P4PBP/3Q2K1 w - - 1 30 | Ng4 | Does Black have any passed pawns? | No | structure |
3R4/5pk1/1p4q1/p2P4/2p4p/P6P/1P3PP1/4R1K1 b - - 0 46 | Qc2 | Identify any White knight outposts on the board. | None | outposts |
r2qr1k1/pppb1pp1/7p/4P1b1/6P1/2N5/PPP1BQ1P/2KR3R w - - 1 16 | e7g5 | Is the White king in check? | Yes | check |
3r4/pppbb1P1/2k1p1B1/4B3/3P2P1/P7/1PP2P2/R3K3 w Q - 0 25 | Bf7 | Does White have any isolated pawns? | No | structure |
rnbq1rk1/1p2bppp/p3p3/4P3/3NpPP1/2P1B3/PP2B2P/R2QK2R b KQ - 0 12 | Nd7 | What piece is on e7? | Black Bishop | occupancy |
8/1k1R2p1/1pp2p2/p1b5/P1q5/2P2Q1P/3B1PP1/3R2K1 b - - 1 32 | d8d7 | Is the Black king in check? | Yes | check |
3r3r/5k1p/4pbp1/3p1p2/8/2P1Q3/Pq3PPP/R3R1K1 w - - 0 27 | Rab1 | Is the move from g2 to a6 legal? | No | legality |
r2q1rk1/pp2ppbp/2p2np1/6B1/n2PP1b1/Q1N2N2/PP3PPP/3RKB1R b K - 3 12 | Nxc3 | Are there any open files in this position? | No | files |
r6r/1Q2b1pp/ppn2q2/kP1p4/P2Pp3/2P1NP2/3B3P/R3K2R w KQ - 0 24 | Nxd5 | Identify any Black knight outposts on the board. | f3 | outposts |
2kr2r1/ppqb1p2/2n5/4Pp2/3p1P2/P1Q5/2P3PP/1RB1KB1R w K - 0 17 | Qd3 | Does Black have any isolated pawns? | Yes: d4, f5, f7 | structure |
b2r2k1/5pp1/4p2p/8/1pR1P3/4B2P/1bB2PP1/6K1 w - - 0 28 | Rxb4 | Is the move from h3 to b1 legal? | No | legality |
rnb1kbnr/pp3ppp/8/2pN4/2p5/5N2/PP2PPPP/R1B1KB1R b KQkq - 0 7 | Bd6 | What piece is on a5? | Empty | occupancy |
r3rbk1/1p3p1p/2ppb1p1/q7/p1P1P3/PnN1B1PP/1PQ2P1K/3RRB2 w - - 0 25 | f4 | Is the move from h2 to a2 legal? | No | legality |
r3k2r/pp1b2pp/1q3n2/3p4/Q7/2PB4/P3NPPP/R4RK1 w kq - 3 18 | Qa3 | Is the move from f1 to b1 legal? | Yes | legality |
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