fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5k2/p5p1/4p2p/5p2/1p6/3n2PP/PP2RPBK/3r4 w - - 2 31 | Rxe6 | Identify any Black knight outposts on the board. | d5 | outposts |
1r4k1/pR3p1p/4p1p1/2p1P3/2Pp1P2/8/P1K3PP/7R b - - 0 28 | b1b7 | Identify any Black knight outposts on the board. | c3, e3 | outposts |
6k1/2R3p1/4p3/3p1pKP/1P3P2/2P1P3/8/6r1 w - - 12 55 | c1g1 | What is the material balance in this position? | White is up 1 pawn of material | material |
2k1r3/1p2n3/p7/3p2Q1/3Pp3/1Pq1P2B/P1P2P2/1R1K4 b - - 8 29 | g2h3 | Is the Black king in check? | Yes | check |
4n3/R3kpp1/4p2p/8/7P/2r3P1/5PK1/8 b - - 1 39 | a8a7 | Is the Black king in check? | Yes | check |
r4rk1/3q1pbp/2p1bpp1/pp6/Pn1P4/1BQ2NBP/1PP1RPP1/R5K1 b - - 8 17 | Bxb3 | Is the move from e6 to d5 legal? | Yes | legality |
rnbqkb1r/ppp2ppp/3p4/8/4n3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 5 | Qe2 | Are there any open files in this position? | Yes: e | files |
8/5N2/1p6/1P3Bk1/2P1K3/p7/8/R7 b - - 4 47 | h6f7 | Is the Black king in check? | Yes | check |
1n2r1k1/Q4ppp/2pb4/8/2P5/7q/PP2KP2/RNB2R2 w - - 2 20 | Be3 | Identify any White knight outposts on the board. | None | outposts |
5rk1/p2n2r1/1pp1p3/8/8/2PP2K1/PP3B2/R4B2 w - - 1 32 | e7g7 | Identify any Black knight outposts on the board. | f5 | outposts |
r4rk1/ppp2ppp/2n2qb1/2b1p1B1/6P1/2PP1N1P/P1P2PB1/R2QR1K1 b - - 2 13 | Qd6 | What is the material balance in this position? | Equal | material |
8/k7/6p1/p1K2p1p/b1N4P/3pP1P1/5P2/8 w - - 0 82 | Nd2 | Is the c-file open, semi-open, or closed? | open | files |
rn1qkb1r/1b1n1pp1/p3p2p/3pP3/1p1N4/4BP2/PPPQN1PP/2KR1B1R w kq - 1 13 | f4 | What piece is on e8? | Black King | occupancy |
rnb1kb1r/pp3ppp/4pn2/2pq4/3P4/N1P2N2/PP3PPP/R1BQKB1R b KQkq - 3 6 | Qd8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/8/p1R5/5p1p/b1k2B1P/1r1p1PK1/6P1/8 b - - 1 49 | g6c6 | Is the Black king in check? | Yes | check |
8/7b/5B1P/5PK1/2k5/p7/8/1q6 w - - 0 68 | b2b1q | What is the material balance in this position? | Black is up 8 pawns of material | material |
r1bqk2r/pppnppbp/5np1/3p4/1P1P4/4PN2/P1PN1PPP/R1BQKB1R w KQkq - 1 6 | Be2 | Is the g-file open, semi-open, or closed? | closed | files |
r1bqr1k1/ppp2ppp/2n5/3p4/2PPn3/2P2NP1/P3P1BP/R1BQ1RK1 w - - 1 12 | Qc2 | What piece is on d5? | Black Pawn | occupancy |
r5k1/3Q3p/6p1/2B5/5P2/pP6/1q4PP/2R4K w - - 1 36 | Qd5+ | Is the move from d7 to a4 legal? | Yes | legality |
rn2k2r/p1qbnpp1/1p2p2p/1BppP2P/3P4/P1P2N2/2P2PP1/R1BQK2R w KQkq - 2 11 | Bd3 | Is the move from b5 to d7 legal? | Yes | legality |
r2qkb1r/pppb2pp/8/3p1p2/3Pn3/3B4/PPPN1PPP/R1BQ1RK1 b kq - 1 8 | Qf6 | What is the material balance in this position? | Equal | material |
8/4qPk1/6p1/1p1QK2p/7P/6P1/8/R7 w - - 17 51 | Kd4 | Does White have any passed pawns? | Yes: f7 | structure |
rnbq1rk1/pp2ppbp/3p1np1/2p5/2PPPP2/2N2N2/PP2B1PP/R1BQK2R b KQ - 1 7 | cxd4 | Are there any open files in this position? | No | files |
2q4r/1k3pp1/5n1p/Q1P5/3r3P/n4NP1/P4P2/2K2R2 w - - 0 30 | Nxd4 | Does White have any passed pawns? | Yes: a2, c5 | structure |
8/4ppk1/1r1q2p1/2Q5/1p1P2P1/1Pb1PB2/5PK1/2R5 w - - 2 46 | Rh1 | What piece is on d3? | Empty | occupancy |
1k6/pp1r4/2n4n/2P5/3pN1p1/3P1r1p/PP1B2K1/R3R3 w - - 0 33 | h4h3 | Is the White king in check? | Yes | check |
2rr4/pp2pbkp/1qp1npp1/7P/1PBP4/P3PN2/3Q1PP1/1RR3K1 b - - 2 24 | Nf8 | What is the material balance in this position? | Equal | material |
4r1k1/2p3pp/1b1q4/1p1p4/3Pr3/2Q1B2P/1PR2PP1/2R3K1 w - - 1 24 | Qd2 | Is the move from f2 to f4 legal? | Yes | legality |
2k2r2/2qb3p/p2pnP1b/3P4/1p6/5Q2/PPP4P/1K1R1B2 w - - 0 24 | Bxa6+ | What piece is on a3? | Empty | occupancy |
5rk1/2q2pp1/Q2bp3/3b4/1p5p/1N2Bn2/PPP1B3/2K4R b - - 2 25 | Ra8 | Identify any Black knight outposts on the board. | f5, g3 | outposts |
r1b1k2r/pp3ppp/2p5/2p3b1/3qN3/5Q2/PPP2PPP/R4RK1 w kq - 0 12 | Rad1 | Is the move from f1 to g8 legal? | No | legality |
8/8/7b/2p1k3/p1P3Pp/4K2P/P2N4/8 w - - 7 139 | Kd3 | Does White have any passed pawns? | Yes: g4 | structure |
3rkb1r/p2Qpppp/2p5/5P2/4n3/1P2N3/PB1P2PP/2R1K2R b K - 0 21 | b7d7 | Is the Black king in check? | Yes | check |
r1bqkbnr/pp1p1ppp/2n1p3/2p1P3/2P5/2N2N2/PP1P1PPP/R1BQKB1R w KQkq - 3 6 | d4 | Are there any open files in this position? | No | files |
Q7/8/8/2K5/5p2/7q/p4Bk1/8 b - - 30 63 | c8a8 | Is the Black king in check? | Yes | check |
6k1/pp2pp1p/2b3p1/8/8/2b1P3/1r3PPP/R5K1 w - - 0 23 | a4c6 | What is the material balance in this position? | Black is up 8 pawns of material | material |
8/8/p6p/1p4k1/5R2/PP4P1/2Pr2r1/R4K2 w - - 0 42 | e2g2 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k2r/1p1b2pp/4p3/3p4/1P3qPP/p7/PnQ2BB1/5RK1 b k - 1 30 | Qc4 | Does White have any passed pawns? | No | structure |
5rk1/1b5p/1q2pNp1/ppp2p2/P5Q1/1B6/1PP2PPP/R5K1 b - - 1 22 | Rxf6 | Does Black have any isolated pawns? | No | structure |
1k6/1b6/p3p3/2q2n1Q/Pp2p1N1/7P/1P1r1PP1/3BR1K1 b - - 2 28 | Qd6 | Identify any White knight outposts on the board. | g4 | outposts |
r4rk1/ppp1p2p/7b/3P1pp1/2Pq4/P3PBP1/5P1P/R4RK1 w - - 0 18 | e5d4 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r4k2/pp3Ppp/1b3n2/5b2/2Q5/5N2/Pq2N1PP/3R1K1R b - - 3 20 | Ng4 | What piece is on h2? | White Pawn | occupancy |
2r5/4p1kp/3p1pp1/qbrB4/1p1QP3/5P2/1PPR1KPP/2R5 b - - 7 23 | Bc4 | Is the White king in check? | No | check |
4kb1r/p2n1ppp/4q3/4p1B1/4P3/1Q6/PPP2PPP/2KR4 w k - 0 16 | Qb8+ | Is the Black king in check? | No | check |
7k/pp3Bpb/5n1p/q1p5/3P4/6QP/PB4P1/5rK1 w - - 0 30 | f5f1 | Is the White king in check? | Yes | check |
8/8/1pN5/8/8/7p/PKP3k1/8 w - - 0 42 | h4h3 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1b2k1r/ppp1q1bp/2np4/5p2/2PP1Q2/2N1BN2/PP3PP1/R3KB2 w Q - 0 14 | O-O-O | What piece is on f2? | White Pawn | occupancy |
r4rk1/pp3ppp/5q2/3B4/8/1P2P2b/P1Q2PPb/R1BR1K2 b - - 0 17 | Bf5 | Identify any White knight outposts on the board. | d4 | outposts |
1r4r1/1P1k3b/B1Rp4/p1pP1P1P/4pK2/4N3/P7/8 w - - 7 42 | Rc8 | Does Black have any isolated pawns? | Yes: a5 | structure |
q1r3k1/3nbpp1/1pp1b2p/r2p4/P2P4/2NBPN1P/2Q2PP1/1R1R2K1 w - - 1 20 | Bf5 | What is the material balance in this position? | Equal | material |
4k2r/4bpp1/2r1p2p/p3P1P1/4NP1P/1PP5/8/2KR3R b k - 0 28 | a4 | Does Black have any passed pawns? | No | structure |
r1b1r1k1/pp2qppp/2pb4/3nP3/1P3p2/2PQ1N2/P1B2PPP/R3R1K1 b - - 1 18 | Bf5 | Identify any White knight outposts on the board. | None | outposts |
3r4/1kp3q1/p2bBp2/1p6/3p3p/2PP4/P2Bb1PP/R2Q3K w - - 0 26 | Qxe2 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
rnbqkb1r/ppp2ppp/4p3/3nP3/2pP4/2N5/PP3PPP/R1BQKBNR w KQkq - 1 6 | f6d5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b3k1/pp1n3p/2pbpq1r/3p4/2PPp1p1/PP2P1P1/1BQN1P1P/3RRBK1 b - - 1 17 | Rxh2 | Is the move from c6 to h6 legal? | No | legality |
rnbq1rk1/ppppb1pp/4pn2/5p2/2PP4/2N2NP1/PP1BPPBP/R2QK2R b KQ - 8 7 | Ne4 | Is the f-file open, semi-open, or closed? | closed | files |
2rq1rk1/1p2pb2/5p1b/pPnP1Np1/2p1P3/P1N1B2P/2Q2P2/R4RK1 b - - 1 25 | Kh7 | Is the White king in check? | No | check |
r5k1/pp3rpp/2p3b1/4p3/3qP3/3P3P/PP4P1/R1BQR1K1 w - - 0 19 | d8d4 | Is the White king in check? | Yes | check |
r3k2r/pp2bppp/2npb1q1/1B6/4PB2/1P6/PP3PPP/R2QR1K1 b kq - 6 14 | c1f4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/4Q3/8/5pp1/6k1/5q2/7K/8 w - - 4 75 | Qe6 | Is the Black king in check? | No | check |
6k1/R7/6p1/P4p1p/5P1P/r2pK1P1/5P2/8 w - - 1 6 | a6 | Is the move from a7 to d7 legal? | Yes | legality |
r2q1rk1/p3ppbp/2p3pn/3n1b2/B3N3/4BN2/PPP2PPP/R3QRK1 w - - 4 13 | Bd4 | Is the White king in check? | No | check |
br3rk1/5qbp/p2pp1p1/N1p1n1B1/2PnP3/R1N5/1P1Q1PPP/R2B2K1 w - - 3 24 | Be3 | What piece is on g1? | White King | occupancy |
2bq2k1/1pp1nrpp/3p3r/p1b2p2/2PNP3/1PQ5/P3BPPP/R1B2RK1 b - - 3 16 | f4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/2k5/8/PP6/2PK4/4P3/8/6r1 w - - 3 62 | c5 | Does White have any passed pawns? | Yes: a5, b5, c4, e3 | structure |
2kr1b2/4p3/5p2/6p1/8/p3PP1b/3B1Q2/2q1K2R w - - 0 30 | Bxc1 | Is the move from d2 to c1 legal? | Yes | legality |
2q2rk1/1p3pbp/r2p1np1/pN2p3/Pn2PP2/2NPB3/1P2Q1PP/R4R1K b - - 1 17 | Qd7 | Are there any open files in this position? | Yes: c | files |
2k2n2/1p6/6pK/p4r1p/5B1P/5PP1/PR6/8 b - - 2 47 | b5 | Does White have any isolated pawns? | Yes: a2 | structure |
5rk1/1p2bp1p/p5p1/3R2Nn/P2P4/7P/1P4P1/RNr3K1 w - - 0 23 | c8c1 | Is the White king in check? | Yes | check |
r3q1kr/p1p3p1/np2p1Q1/3pP1Np/3P3P/P1P5/2P2PP1/R3K2R w KQ - 1 16 | Qd3 | Identify any Black knight outposts on the board. | a5 | outposts |
2r2k1r/1p2p3/p1bp1np1/3N3p/2PRPP2/8/PP1KB1P1/5R2 b - - 0 23 | Kg7 | Is the move from c8 to a8 legal? | Yes | legality |
r1b1r1k1/1pp1n1pp/p1pb1p2/8/4PP2/1NN5/PPP3PP/R1B2RK1 w - - 0 12 | f5 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/pppnb1pp/2n2p2/1B1pP3/3P4/5N2/PP1N1PPP/R1BQ1RK1 w - - 4 10 | e6 | Is the move from a1 to f6 legal? | No | legality |
rnb1kb1r/ppp1pppp/2n5/4P3/3Q4/4N3/PPP2PPP/R1B1KBNR b KQkq - 0 7 | Nxd4 | What is the material balance in this position? | White is up 9 pawns of material | material |
rnbqkb1r/ppp1pppp/5n2/3P4/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 3 | Nxd5 | Are there any open files in this position? | No | files |
2brr1k1/pp4q1/2p2n1P/2Ppp3/8/5BP1/PP1BPP2/2RR2K1 w - - 0 28 | hxg7 | What piece is on g8? | Black King | occupancy |
rnbqk2r/2pnbpp1/1p2p2p/pB1pP3/3P3P/1N3N1R/PPP1QPP1/R1B1K3 w Qkq - 0 11 | Rg3 | Is the a-file open, semi-open, or closed? | closed | files |
r1q2rk1/5pb1/1p1Q2p1/1N2p2p/4P2P/1pN2P2/bP1K2P1/3R1B1R b - - 1 20 | Rd8 | Does White have any isolated pawns? | Yes: b2 | structure |
rnb1kbnr/ppp3pp/8/4pp2/3qN3/3B4/PPP1NPPP/R1BQK2R b KQkq - 1 6 | Qb6 | Is the move from d4 to f3 legal? | No | legality |
r4rk1/pp3ppp/4n3/3p1q2/8/P3P3/1P2BPPP/R2QK2R w KQ - 0 16 | O-O | Does White have any passed pawns? | No | structure |
r3kbnr/pp1q1ppp/2np4/2pNp3/2P5/1P2PNP1/PB1P1P1P/R2QK2R b KQkq - 0 10 | Nce7 | Is the h-file open, semi-open, or closed? | closed | files |
r5k1/pbp2rq1/1p4p1/2n1R2p/2PN2pB/2P5/P2Q1PPP/4R1K1 w - - 12 27 | Re7 | What piece is on f7? | Black Rook | occupancy |
5q1k/1r4p1/2p1Pp1p/1p1p1P2/3P1Q1R/2P3RP/6PK/r7 b - - 27 53 | Kh7 | Does Black have any passed pawns? | No | structure |
r3r1k1/5pnp/2p5/p3Pp2/Pp2P3/1PnN1Q2/6PP/2N4K w - - 0 31 | g6f5 | Identify any White knight outposts on the board. | f5, f6 | outposts |
1qrb1rk1/1b3ppp/pp3n2/5N2/1Pp5/P3BP2/4BQPP/2R2RK1 w - - 0 21 | Bxc4 | Is the Black king in check? | No | check |
8/8/3k1p2/K3pPp1/P5P1/1P6/8/8 b - - 0 131 | Kc5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
7r/p1kR1ppp/BpP3qn/8/8/P1N1P1P1/1P4QP/2K5 b - - 2 21 | d1d7 | Is the White king in check? | No | check |
1r1q2k1/pp3pbb/3pr3/2pR4/2P1P1n1/1QN1N1P1/PP4P1/3R2K1 w - - 0 25 | Nxg4 | Identify any Black knight outposts on the board. | e5 | outposts |
r6q/ppR4p/2nk1p2/1P6/2p2Q2/8/P2P1PPP/1R4K1 b - - 4 33 | e3f4 | What is the material balance in this position? | White is up 3 pawns of material | material |
rnb1kb1r/2q2ppp/p2ppn2/1p6/3NP3/1BN1BQ2/PPP2PPP/R3K2R b KQkq - 3 9 | Nbd7 | Does White have any isolated pawns? | No | structure |
8/Nb2kpp1/3np2p/1P1p4/3P4/1K1B1P2/6PP/8 w - - 1 30 | Kb4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
8/4Q3/2k2Pq1/8/8/5K1p/8/8 w - - 6 55 | Qe6+ | Identify any Black knight outposts on the board. | None | outposts |
2Rr1k2/5p2/3rpb2/p1Np1q2/P2P4/1K2P3/1P5Q/2R5 w - - 0 55 | Qxd6+ | Is the c-file open, semi-open, or closed? | open | files |
b1r2r1k/p1q2ppp/Pp2nN2/3pN3/3P2Q1/R7/1P3PPP/4R1K1 w - - 2 23 | Qg6 | Does White have any isolated pawns? | Yes: d4 | structure |
8/8/1pK5/1P6/2Q5/4N3/3k4/6N1 w - - 0 1 | Kd5 | Does White have any isolated pawns? | Yes: b5 | structure |
r5k1/5ppp/p1pN4/3b4/8/6P1/PR3P1P/6K1 w - - 1 25 | b3d5 | Identify any Black knight outposts on the board. | d5 | outposts |
1n2R1nr/2pk3p/1p3p2/3Q3r/2pP4/5N2/1P3BPP/7K b - - 0 25 | a8d5 | Is the Black king in check? | Yes | check |
8/pp1nkpQp/4pn2/8/3P4/b3B3/PP3P1P/1K1q2N1 w - - 1 21 | a4d1 | Is the White king in check? | Yes | check |
2r3qk/p3R1p1/1p2NnQ1/7p/8/5P2/5P1P/6K1 w - - 6 29 | Rxg7 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
8/3k4/5p2/3Qp2q/4P2P/6P1/2r3PK/8 b - - 1 39 | a8d5 | Is the White king in check? | No | check |
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