fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
Q7/2q3p1/3k3p/p1pBb2P/P2p4/3P2P1/5P2/6K1 w - - 2 65 | Bc4 | Identify any White knight outposts on the board. | None | outposts |
1q5k/2p2Q1p/p2p4/7P/3PP1P1/1rpn4/2K5/3R2R1 b - - 1 29 | Nb4+ | Are there any open files in this position? | Yes: b, f | files |
2rr2k1/pp3p1p/4p1p1/3p4/8/3P2P1/5K1P/2R5 w - - 1 33 | Rb1 | Is the move from d3 to g3 legal? | No | legality |
3r2k1/1R3p1p/p7/3nn3/2p3p1/2Pp2P1/P4PKP/1NR5 w - - 0 24 | Nd2 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2q1rk1/pp3ppp/2n5/1N1np3/6bb/1NP2P2/PPQBK1PP/3R1B1R b - - 2 15 | Bh5 | Does Black have any passed pawns? | No | structure |
3B2n1/8/p3k1pb/2p1p2p/2P1P3/5N2/P5PP/1K6 b - - 0 44 | Bg7 | Is the d-file open, semi-open, or closed? | open | files |
3r1r2/nq1N1k1p/8/1p4Q1/3p1P2/3P1R2/P6P/7K w - - 4 36 | Qf6+ | Identify any White knight outposts on the board. | e5 | outposts |
7k/pb2q2P/1p6/2rPp3/1Q2p3/1P2R3/PBr3PP/5RK1 w - - 2 29 | Rf8+ | Is the move from b4 to c5 legal? | Yes | legality |
r7/1b2bR2/pnq1p1Pk/2p1P2p/2P5/3r3Q/PB4PP/R5K1 w - - 0 24 | Rh7+ | What is the material balance in this position? | Black is up 4 pawns of material | material |
r4rk1/Bpp2ppp/p1np1q2/4p3/P1P1Pn2/2P2N1P/1P3PP1/R2QRNK1 b - - 0 14 | Rxa7 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r3q1k1/Np1r1bpp/8/2RP1p2/Qn2pN1B/4P2P/5PP1/3R2K1 b - - 0 28 | Na6 | What is the material balance in this position? | White is up 3 pawns of material | material |
4r2k/6bp/p1r3p1/BpPNpp2/1P1nP2q/6NP/Q4P2/3RR1K1 b - - 0 36 | f4 | Is the move from g7 to f6 legal? | Yes | legality |
8/7p/4Q3/6KP/6P1/7k/3q4/8 w - - 3 69 | b2d2 | Is the White king in check? | Yes | check |
rnb2k1r/1p3p1p/pnq2Np1/4P3/1PPR4/6Q1/P4PP1/2K2B1R b - - 0 18 | N8d7 | Does Black have any passed pawns? | No | structure |
r1bq2k1/7p/p2p4/nppPn3/2P2P2/1P6/PQ1NB2P/R2N2K1 b - - 0 21 | Ng6 | Does White have any passed pawns? | Yes: f4 | structure |
r1bqk2r/p5b1/1ppp4/5p1p/2PPpnpP/1QB1P1P1/PP4P1/R3KB1R w KQkq - 0 19 | gxf4 | Are there any open files in this position? | No | files |
r2qk2r/pp1nbpp1/2p2n1p/3p1b2/3P3B/2N1PP2/PP2N1PP/R2QKB1R w KQkq - 1 10 | Bf2 | Is the move from f1 to h5 legal? | No | legality |
r4rk1/2p3pp/1p1pn3/5p2/1pP2P1q/4PB2/P1Q3PP/R4RK1 b - - 1 21 | Rae8 | Is the move from h7 to h5 legal? | Yes | legality |
r1bqnrk1/pppp1p1p/3b2p1/3N3R/8/3B1Q2/PPPP1PPP/R1B3K1 b - - 1 12 | c6 | Are there any open files in this position? | Yes: e | files |
r3q1k1/pb1n1p1p/3p2pB/2pPb3/1p2N1P1/7P/PPP2PB1/R2Q2K1 w - - 2 19 | f4 | What piece is on d5? | White Pawn | occupancy |
r5k1/1p3pp1/p2p3p/8/P2P1Pnq/1P5P/3Q3K/4R3 w - - 0 27 | f6g4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r2q1rk1/1p2ppbp/p1npbnp1/8/4P1P1/1NN1BP2/PPPQB2P/R3K2R b KQ - 0 11 | d5 | Are there any open files in this position? | No | files |
8/7R/3k4/5n2/1prp4/8/PP1K1N1P/8 b - - 1 53 | b3 | Identify any White knight outposts on the board. | None | outposts |
1rb1qr2/3n2b1/2pk2P1/p3P3/8/1P2PNQ1/P4PP1/1K1R3R b - - 0 25 | Kc5 | Does White have any passed pawns? | Yes: e3, e5, f2, g2, g6 | structure |
r1b2b1r/1p1n1kpp/p2p1n2/q3P1B1/5P2/2N5/P1PQ2PP/4RR1K b - - 3 16 | d5 | Are there any open files in this position? | No | files |
4n1k1/7p/2pp2bq/1p4N1/5Pp1/P2B4/1P3Q1P/6K1 w - - 0 28 | Qe2 | Is the White king in check? | No | check |
2r3k1/8/4p1P1/6Qp/p2p1N2/2n1pqPP/2P1b2K/R7 b - - 0 42 | Ne4 | What piece is on b2? | Empty | occupancy |
r1bq1rk1/pp4pp/2pb1nn1/3p2B1/3P1p2/P2B1QN1/1PP1NPPP/R3K2R w KQ - 0 14 | Nf5 | Is the White king in check? | No | check |
8/pp3pk1/4q2p/6r1/2PpB3/3P1QP1/PP3P2/4R1K1 w - - 1 33 | Qh1 | What is the material balance in this position? | White is up 4 pawns of material | material |
r3N1k1/1p3pbp/2p2qp1/p1nn4/3p2Q1/2PB2BP/PP3PP1/4R1K1 b - - 4 21 | Nxd3 | Does White have any passed pawns? | No | structure |
5rk1/1b3pp1/p3pn1p/1p1n4/1P1q3B/P4N2/B4PPP/2Q1R1K1 b - - 1 26 | e5f3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1k5r/1p1q1pp1/1P1bbnnp/1P1p4/2r3P1/3PP2P/5QBB/R3R1K1 w - - 1 4 | Ra8+ | Is the move from g4 to d8 legal? | No | legality |
rnbqkb1r/ppn1pp1p/2pp2p1/4P3/2PP1P2/2N2N2/PP4PP/R1BQKB1R b KQkq - 1 7 | Bg4 | What piece is on g5? | Empty | occupancy |
8/8/8/p5Kp/P6P/1k6/5P2/8 b - - 2 47 | Kxa4 | Does White have any passed pawns? | Yes: f2 | structure |
r3qrk1/3b1pp1/1p2pn1p/N2p4/3N4/P3P2P/4QPP1/1RB2RK1 b - - 0 18 | b3a5 | What is the material balance in this position? | White is up 2 pawns of material | material |
r6r/5k2/p1p1bp2/2Bp1n1p/R7/1PP5/3N1PPP/5RK1 w - - 0 21 | f3 | What piece is on h2? | White Pawn | occupancy |
1r3r1k/7p/3p4/p4p2/2P2b2/2P4P/R5P1/5RK1 w - - 0 28 | Rxf4 | What piece is on a2? | White Rook | occupancy |
1k2r2r/ppp1q2p/3pbp2/4n1p1/P5P1/1PP1B2P/2PQBP2/2KR3R w - - 1 20 | a5 | Identify any Black knight outposts on the board. | None | outposts |
8/7p/8/8/2p5/2k3P1/8/2K5 b - - 1 59 | h5 | Identify any Black knight outposts on the board. | b3, d3 | outposts |
rnb1kb1r/ppp3qp/3p1pp1/4pP2/2B4N/2P5/PPP3PP/R1BQ1RK1 w kq - 1 10 | Qf3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1Qb2bnr/p1pp2kp/6p1/1p6/4P3/5p2/PPPPN1qP/RNBKR3 b - - 0 11 | f2 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
2r3k1/p4p2/1pq2Pp1/3r3p/5Q2/2P1R3/7P/5RK1 w - - 0 39 | Qh6 | Is the move from h2 to a6 legal? | No | legality |
8/pp5p/5k2/2p5/n7/2P3P1/P2KB2P/8 b - - 3 35 | Nb6 | Is the e-file open, semi-open, or closed? | open | files |
rnbqkbnr/ppp2ppp/3p4/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3 | f1b5 | Is the Black king in check? | Yes | check |
1rb1r1k1/1p4b1/pN1p3p/2pP1p2/2P2P2/3Bq3/PPQN2P1/1K3R2 b - - 5 27 | Qe1+ | Are there any open files in this position? | Yes: e | files |
r1bq2k1/pp3rbp/3p1nn1/1N1Pp3/4Ppp1/3N1P2/PPQ1BBPP/2R2RK1 b - - 3 18 | g3 | Is the move from f6 to h5 legal? | Yes | legality |
r1bq1rk1/pp3ppp/2pbpn2/4N3/2BP1Q2/8/PPP2PPP/R1B2RK1 b - - 2 11 | c5 | Is the move from c6 to a6 legal? | No | legality |
1bk5/pp6/2P1p1p1/6B1/3P2p1/2P5/PR2KP1r/8 b - - 0 29 | bxc6 | Is the Black king in check? | No | check |
3r4/6p1/7p/R3pp2/6kP/2P1n1P1/1PK2P2/8 w - - 0 37 | d5e3 | Is the White king in check? | Yes | check |
r2q3r/pp2bP2/2p3kp/2n4n/8/2N1P3/PP1B3P/2KQ1B1R w - - 0 21 | Rg1+ | Is the move from f1 to c6 legal? | No | legality |
6b1/6kp/p2R4/5p2/8/r1P2N1P/6P1/6K1 w - - 0 33 | Nd4 | Does Black have any isolated pawns? | Yes: a6, f5, h7 | structure |
r1b3k1/pp4q1/n1pP1BP1/7Q/2P1p3/1P6/P5PP/4R2K b - - 0 28 | Bg4 | Identify any Black knight outposts on the board. | d3 | outposts |
r3r1k1/pbpq2pp/1p3p2/3P4/2PNn3/1Q5P/PB3PP1/R3R1K1 b - - 2 22 | c6 | Identify any Black knight outposts on the board. | a5 | outposts |
3q1rk1/1br1ppbp/p4np1/1p2N1B1/3P3Q/1BP1R3/P4PPP/4R1K1 b - - 11 21 | Bd5 | Is the Black king in check? | No | check |
r3k2r/p2n1pb1/1q2bn1p/1B1p2p1/3N1p2/2PP4/PP1NQ1PP/R1B2RK1 b kq - 7 14 | O-O | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r3r3/q3npk1/3p2pp/1pbN4/p3P2P/P1P1N3/KP1Q2P1/4R2R b - - 2 26 | Bxe3 | Are there any open files in this position? | No | files |
8/6k1/4pbp1/p2p1p2/1p1PnP1P/1P1NP2K/P7/3N4 b - - 5 39 | Nc3 | Does White have any isolated pawns? | Yes: h4 | structure |
8/8/8/4b3/8/5Bp1/5k1p/7K w - - 1 4 | Be4 | Is the move from f3 to g2 legal? | Yes | legality |
8/7p/8/8/P4p2/2B4P/1RPRKPP1/2k5 b - - 1 49 | h5 | Is the move from h7 to h5 legal? | Yes | legality |
3r2k1/p6p/r2P2p1/4Pp2/2P5/8/6BP/5R1K b - - 0 30 | Ra5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b2rk1/1pqn1ppp/1n2p3/p7/P1pPP3/2P5/2B1NPPP/R1BQ1RK1 w - - 0 14 | Rb1 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
6k1/rp3rp1/p1nq2bp/3p4/3N4/6P1/PP2BP1P/2RQ1RK1 b - - 1 21 | Ra8 | Are there any open files in this position? | Yes: c, e | files |
r2qr1k1/pbp2p2/5n2/2b1N1p1/4p3/2P3B1/PP1NQ1PP/2KR3R b - - 3 17 | Qe7 | Identify any White knight outposts on the board. | None | outposts |
5rk1/1b3ppp/1p3n2/6N1/2p5/1r3P2/4K1PP/1BRR4 b - - 0 23 | b5 | Is the move from b3 to b1 legal? | Yes | legality |
r5k1/5pp1/pp1r4/2npq2p/1Q1R4/P3P2B/1P3PPP/R5K1 b - - 1 23 | Rad8 | What is the material balance in this position? | Equal | material |
r2r2k1/ppq2ppp/5n2/6N1/1Q4b1/3B4/P1P2PPP/1R3RK1 b - - 5 17 | Bc8 | What piece is on a5? | Empty | occupancy |
1r1r2k1/q4p2/3p2pp/p2Q4/8/1PP2P2/P3R1PP/4R1K1 w - - 1 28 | Kh1 | Is the White king in check? | Yes | check |
1r4k1/5pp1/7p/2Q5/7P/6P1/1r3PK1/8 w - - 2 42 | Qe5 | Are there any open files in this position? | Yes: a, b, c, d, e | files |
r3nrk1/p2q2b1/1p1p1p1p/2pNp1p1/2P1P1P1/1P1P3P/P4PK1/RN1Q1R2 b - - 1 17 | Bh8 | Is the move from e5 to f4 legal? | No | legality |
1r2k2r/ppp1q3/2pbb3/N3p1pp/4P3/2Q2N2/PPP2PPP/R4RK1 b k - 1 17 | O-O | What piece is on g1? | White King | occupancy |
2rr4/pp2pbkp/1qp1npp1/7P/1PBP4/P3PN2/3Q1PP1/1RR3K1 b - - 2 24 | Nf8 | Is the move from c8 to d8 legal? | No | legality |
8/8/6r1/1P6/1K6/8/2P5/6k1 w - - 0 51 | h1g1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rnbq1rk1/pp3ppp/3bpn2/2pp4/3P1B2/2P1PN2/PP1N1PPP/R2QKB1R w KQ - 0 7 | Bd3 | Does Black have any isolated pawns? | No | structure |
8/2p5/1p1p3k/1P1P2pp/2PK4/1r6/6RP/8 w - - 0 58 | Re2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1r2rbk1/1N3pp1/5n1p/4p3/P2n4/3PP1PB/3q1P1P/1R1Q1RK1 w - - 0 25 | exd4 | Does Black have any passed pawns? | No | structure |
r1b2rk1/4ppbp/pn1p2p1/1p6/2BpPN2/5P2/PP4PP/1KR1Q2R b - - 0 16 | Nxc4 | Is the c-file open, semi-open, or closed? | open | files |
rn2k2r/pp3ppp/3b1q2/2pP4/2B3b1/5N2/P2B1PPP/R2QR1K1 b kq - 5 13 | f1e1 | Is the White king in check? | No | check |
r2qk2r/p2pbppp/bpn1p3/2pnP3/4B3/2PP1N2/PP3PPP/RNBQK2R w KQkq - 0 9 | c4 | Does Black have any passed pawns? | No | structure |
8/5R2/p7/P2K4/3P2k1/8/r7/8 w - - 1 7 | Ke6 | Identify any White knight outposts on the board. | c5, e5 | outposts |
6nr/1k1p1pp1/1Pn4p/3Pp3/2Q1P3/2P1BN2/5PPP/6K1 w - - 3 29 | e7c6 | What is the material balance in this position? | White is up 6 pawns of material | material |
7k/1pp4p/3p2r1/3P1RBq/1PP3n1/6b1/3Q3P/3Nr1RK w - - 2 2 | Bf6+ | Does White have any isolated pawns? | Yes: h2 | structure |
r1bqk2r/ppp5/2n1pb2/3p1ppp/2PPn2P/BP2PNP1/P4PB1/RN1Q1RK1 w kq - 0 11 | hxg5 | Identify any White knight outposts on the board. | None | outposts |
6k1/1p1b4/p3pr1p/3p3R/5P2/2PBK3/PP5P/8 w - - 0 29 | Rh4 | Identify any Black knight outposts on the board. | f5 | outposts |
1Q6/8/8/1k1K4/8/8/8/q7 b - - 1 6 | Ka6 | Does White have any passed pawns? | No | structure |
8/7P/n6r/4pp2/1PR4k/2P1K3/5P2/8 b - - 0 4 | Kg5 | Is the Black king in check? | Yes | check |
8/2R3pk/1p5p/pP6/8/P5Pb/5P1P/5qK1 w - - 0 33 | a1f1 | Is the White king in check? | Yes | check |
2rq1rk1/pb2bppp/1p2p3/3p4/1nPP4/PPR2N2/1B3PPP/3QRBK1 b - - 0 15 | Nc6 | Are there any open files in this position? | No | files |
1kb5/p7/1pQ5/2q5/2PK4/1P2P3/8/8 w - - 3 39 | a5c5 | Is the White king in check? | Yes | check |
6k1/p4p2/1r6/6q1/3QP3/7K/PPP5/R4R2 w - - 2 5 | Qxb6 | What piece is on a7? | Black Pawn | occupancy |
8/5pk1/1R4p1/1P4P1/4r3/8/5K2/8 b - - 1 41 | Rg4 | What is the material balance in this position? | Equal | material |
8/3P4/1B5k/6bp/2P1p3/6P1/5P2/6K1 w - - 0 44 | f6g5 | What is the material balance in this position? | White is up 2 pawns of material | material |
1r4k1/p2b1p1p/1r4p1/3Pp3/2p4P/2q2P2/PP1R1QP1/K1N4R b - - 1 26 | Qa5 | Identify any Black knight outposts on the board. | d3, d4 | outposts |
2k5/pp6/2p3pp/2Nn4/8/1P3P2/P3r1PP/R5K1 b - - 3 33 | Ne3 | Does Black have any isolated pawns? | No | structure |
r4rk1/2pnb1pp/p2p2q1/1p1Ppn2/1P2Np2/PBPP1P2/6PP/R1BQ1RK1 b - - 0 20 | Bh4 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
4R3/5P1k/4N1p1/3pn3/1b6/3Br3/1PK5/8 b - - 1 48 | Rxd3 | What is the material balance in this position? | Equal | material |
r1bq1rk1/p4pbp/1np2pp1/1p6/3P1B2/1B3N1P/PPP2PP1/R2QR1K1 b - - 3 12 | a5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
rnb2rk1/pp3ppp/4p3/q2n4/1b1N4/1QN3P1/PP2PPBP/R1B1K2R w KQ - 2 10 | Bd2 | Is the White king in check? | No | check |
r1bq1rk1/pp3ppp/2n5/2bp4/8/P4NP1/1P2PPBP/R1BQ1RK1 b - - 0 11 | a5 | Identify any Black knight outposts on the board. | None | outposts |
8/6Pk/8/8/8/K1n5/8/1q6 w - - 1 10 | g8=Q+ | Does White have any isolated pawns? | Yes: g7 | structure |
2k1r3/p1p2p2/1pn2Prp/2p5/2P2R2/1P1R4/PB4PP/6K1 w - - 1 28 | Bc3 | Identify any Black knight outposts on the board. | None | outposts |
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