fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r2qkb1r/pp2pppp/2p2nb1/2p5/4PBP1/3P1N1P/PPP2P2/RN1QK2R b KQkq - 2 8 | c4 | Are there any open files in this position? | No | files |
r1b2nk1/pp3r2/1b3pp1/4p3/7Q/2B5/PPPN3P/1K3R2 b - - 1 28 | Bf5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r2qr1k1/pp3ppp/4bn2/8/1b1P1N2/1P3B2/PBQ2PPP/R4K1R b - - 6 16 | Rc8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qkbnr/ppp1pppp/2n5/3p4/2PP2b1/5N2/PP2PPPP/RNBQKB1R w KQkq - 3 4 | e3 | What piece is on c3? | Empty | occupancy |
5R2/5p2/5Pk1/p3P2p/P6P/1p3K2/2rr4/4R1B1 b - - 0 46 | b2 | Identify any White knight outposts on the board. | d6, f6 | outposts |
2r1k2r/pp1n3p/4pp2/8/1b6/2N1P3/PqR1NPPP/3QK2R b Kk - 1 14 | Qa3 | Identify any Black knight outposts on the board. | None | outposts |
1r1q1r1k/6bp/p1npb1p1/1pp1pp2/1N2P3/P1PP1N1P/BP1Q1PP1/R4RK1 b - - 1 17 | Bd7 | Is the b-file open, semi-open, or closed? | closed | files |
1r4k1/5p2/3Q2p1/8/3Rq3/2p4P/2Pn2PK/1r1R4 b - - 1 37 | Qe6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
6kr/1p1b3p/p3p1pP/2p5/5r2/2PB4/PP5P/5RK1 w - - 0 29 | Rxf4 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r3qrk1/p5b1/2b3pp/2Q5/5P2/1P1pB3/P4KPP/3R1B1R b - - 1 23 | Rc8 | Is the White king in check? | No | check |
r2r4/3k1ppp/2b5/p1p1p3/P1P1P3/5P2/2B2KPP/R2R4 b - - 1 27 | Kc7 | What piece is on d6? | Empty | occupancy |
r2q1rk1/p1pp1ppp/bp3n2/n2Pp3/2P1P3/2PB2N1/P3QPPP/R1B1K2R b KQ - 2 11 | Ne8 | Is the move from f8 to g2 legal? | No | legality |
6k1/6bp/r1qn1pp1/3p4/1p1PpP2/1P2P1P1/1B3N1P/1Q2R1K1 w - - 0 31 | Rc1 | Is the Black king in check? | No | check |
8/8/3BK1p1/1PRn3p/4k3/8/6rP/8 b - - 3 67 | Rd2 | What is the material balance in this position? | Equal | material |
r2qkb1r/pp1bpppp/2np1n2/1Bp5/3P4/2P2N2/PP3PPP/RNBQR1K1 w kq - 2 8 | d5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkb1r/ppp2ppp/8/3P4/4nP2/5N2/PPP3PP/RNBQKB1R b KQkq - 1 6 | Bc5 | Are there any open files in this position? | Yes: e | files |
2b2r2/3pRp2/1RpP1k2/2P3pp/1p1K1p1P/rB4P1/P7/8 w - - 0 30 | hxg5+ | Identify any White knight outposts on the board. | None | outposts |
1Q6/8/4k3/2p1p1P1/8/1P6/p7/6K1 w - - 0 50 | Qa7 | What piece is on f7? | Empty | occupancy |
rq2rk2/7Q/p2p2p1/3PbbP1/1p5R/8/PPP4P/2K2R2 w - - 2 27 | Qxg6 | Is the move from c2 to d8 legal? | No | legality |
4r3/2Qpk1p1/N1p5/4p3/P1P5/1P2q1Pp/5R1P/6KB b - - 4 31 | Rf8 | Identify any Black knight outposts on the board. | None | outposts |
bn1brkrn/p1pppppp/1p6/8/2PP4/1P6/q3PPPP/BNQBRKRN w KQkq - 0 4 | Na3 | What piece is on b7? | Empty | occupancy |
8/pp5p/2p1k1p1/8/4P3/1P3nP1/P4N1P/5K2 b - - 2 35 | Ke5 | Identify any Black knight outposts on the board. | None | outposts |
6qk/1p2Q2p/pbb3p1/5pN1/1P1p1P2/3P4/P2B2PP/6K1 w - - 4 34 | b5 | Is the move from f4 to h8 legal? | No | legality |
2rr2k1/1q3ppp/pn2p3/1p2Pn2/4NB1P/P2R1QP1/1P3P2/4R1K1 b - - 3 24 | Qa8 | Is the move from d8 to d6 legal? | Yes | legality |
5r2/pp6/2p3k1/4p3/4b3/1P5P/P6K/5R2 w - - 0 41 | Rxf8 | Is the move from a2 to c4 legal? | No | legality |
1rbqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NPB1P1/PPP1NPBP/R2QK2R b KQk - 3 7 | Nf6 | Is the move from d8 to f6 legal? | No | legality |
2r2rk1/pp1b1ppp/3b4/3p4/P3P2q/1Q1p1P2/4K2P/BN3BNR w - - 0 21 | d4d3 | Is the White king in check? | Yes | check |
8/7r/p3k2P/1p2bp1R/4p3/PPP5/K2BR3/6r1 b - - 2 47 | Rg4 | Does White have any passed pawns? | Yes: h6 | structure |
rnb1k2r/p2pppbp/2p3p1/8/N2P4/nBQ2N2/P4PPP/4K2R b Kkq - 0 15 | Nb5 | Is the move from c6 to g3 legal? | No | legality |
r4rk1/pb1pqppp/1p6/n1p5/2P1n3/PP1QP1N1/1B3PPP/R3KB1R b KQ - 6 15 | f5 | Are there any open files in this position? | No | files |
8/4kppp/p1p1p3/Pn2P3/1N6/4KP2/6PP/8 b - - 0 33 | Nc7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r2rk1/1pNb1p1p/p3p2p/2p3b1/P1Pp1PP1/1P1P4/4BP2/R4RK1 b - - 0 20 | f3f4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r4rk1/p7/3p3p/1P1Q1pp1/2P1p3/7P/Pq3NK1/R4R2 b - - 1 28 | b7d5 | Is the White king in check? | No | check |
5b2/pp1k1pN1/5r1p/2p4P/2P1r3/4B1P1/PP6/2KR4 b - - 1 28 | Kc6 | Is the move from d7 to c7 legal? | Yes | legality |
r6r/pp1nkppp/3pbn2/4p1B1/4P3/5N2/PPP2PPP/2KR1B1R w - - 0 11 | Bb5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
3qr3/1b2bpk1/pp2p3/3pP1P1/P1nP2N1/2P1B1P1/6B1/R2Q2K1 w - - 1 31 | Nf6 | Does White have any isolated pawns? | Yes: a4, g3, g5 | structure |
r1bqk2r/b3nppp/p1npp3/1p6/4PP2/1NNB1Q2/PPPB2PP/R3K2R w KQkq - 0 11 | g4 | Is the move from a1 to c1 legal? | Yes | legality |
1r1N3k/r5pp/5n2/8/p1Q5/7P/1q3PP1/R4RK1 w - - 10 6 | Qc5 | Is the Black king in check? | No | check |
r1b1r1k1/p1N4n/1p1P2p1/3Pp3/1P2PbPq/1N4p1/P3B1K1/R2QR1B1 w - - 1 26 | Bf3 | What is the material balance in this position? | White is up 4 pawns of material | material |
rn1q1rk1/p1n2ppp/1pp2b2/3p1P2/4PB2/2N5/PP3PBP/R2Q1RK1 b - - 0 15 | d4 | Are there any open files in this position? | No | files |
rnbqk1nr/ppp1bppp/3p4/4p3/2B1P3/3P4/PPP2PPP/RNBQK2R w KQkq - 1 6 | g5e7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
5rk1/2p1bpp1/r2p1n1p/p4P1P/2P1P3/P2P1P2/4q2N/RB2K2R w KQ - 0 26 | e3e2 | Is the White king in check? | Yes | check |
2k2r2/1ppqr3/p1npb3/5ppP/2PB4/1P6/PKPQB1P1/4R2R w - - 0 24 | Bc3 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
1r1qnk1r/4b1p1/2n1pp2/pp1p3P/2pP1P1B/P1P1PB2/1P1N4/R2QK1R1 b Q - 1 26 | f5 | Does White have any passed pawns? | No | structure |
3k4/p1q3R1/2bp1n2/4p3/2r1PN1P/2p1BP2/PPP5/1K1R4 w - - 1 27 | Ne6+ | Is the move from g7 to d7 legal? | Yes | legality |
2k5/ppp1pp2/3p2p1/4P1n1/4P3/P1P1N1Pq/1P1Q1P2/R3R1K1 b - - 2 26 | Nf3# | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/5p1k/2R4p/1P1qQ1p1/4p3/P7/1B3PK1/7r b - - 8 40 | Rg1+ | Are there any open files in this position? | Yes: c, d | files |
8/8/4K3/7k/4P3/4Q3/8/7q w - - 5 83 | Kf5 | Does Black have any passed pawns? | No | structure |
r1b4r/5k1p/p3p3/1pp2PpB/8/2P4R/PP3P1P/3R2K1 b - - 0 27 | Kg7 | What piece is on e6? | Black Pawn | occupancy |
r1bq1rk1/pp1n1ppp/3bpn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQ1RK1 w - - 5 8 | Re1 | Does White have any passed pawns? | No | structure |
2r3k1/3nbp1p/2r1p1p1/pqppP3/N4P2/1P1PQ3/P1R2BPP/2R4K b - - 12 30 | c4 | What piece is on g6? | Black Pawn | occupancy |
8/8/6N1/ppk2p1p/P1n1p2P/2K1P1P1/5P2/8 w - - 0 72 | Nf4 | What piece is on a5? | Black Pawn | occupancy |
8/pKP3k1/8/8/7p/2q3p1/7P/8 w - - 0 56 | h3 | What piece is on f8? | Empty | occupancy |
5rk1/1r1b1pnp/Np1p2p1/2pPp1N1/2P1P3/7P/PP3PP1/2R1K2R b K - 0 20 | Ra7 | Does Black have any passed pawns? | No | structure |
2r2rk1/pp1bpp1p/3p2p1/1P1P4/4P3/5P2/P3B1PP/R1R3K1 b - - 2 20 | f5 | Is the move from d6 to e3 legal? | No | legality |
rn1q1rk1/pb2bppp/1p3n2/2pp1QN1/8/2N3P1/PP2PPBP/R1BR2K1 b - - 1 13 | g6 | Is the White king in check? | No | check |
1n6/1P1kb3/8/5Ppp/7P/4RKP1/5P2/8 w - - 0 45 | Rxe7+ | Is the move from b7 to b5 legal? | No | legality |
8/ppp3pp/2n5/3k4/2Np4/P7/1PP1KPPP/8 w - - 5 24 | Kd3 | Identify any White knight outposts on the board. | None | outposts |
rnb1k2r/ppp1qppp/3p1n2/4p3/2PPP3/5P2/PP4PP/R1BQKBNR b KQkq - 0 7 | Nc6 | Identify any Black knight outposts on the board. | None | outposts |
8/5k2/2n1p3/3pPpBP/n1p2Pp1/2P5/2PKB1P1/8 w - - 9 39 | Bh6 | Identify any White knight outposts on the board. | g6 | outposts |
rq3rk1/pb3ppp/2pb1n2/1p2n3/3NP3/2N5/PPQ1BPPP/R1BR2K1 b - - 1 14 | Ned7 | What piece is on a6? | Empty | occupancy |
8/8/4q3/2K1r1k1/3p4/8/8/8 w - - 0 64 | d5d4 | Is the White king in check? | Yes | check |
8/8/1p1k4/7p/PP1Kpp2/8/5PP1/8 b - - 1 42 | e3 | What piece is on d4? | White King | occupancy |
r1bq1rk1/pppnn1bp/3p2p1/3Ppp2/2P1P3/2NN4/PP1BBPPP/R2Q1RK1 b - - 1 11 | f4 | Does Black have any isolated pawns? | No | structure |
6k1/8/7p/5nq1/8/5K2/4r3/8 w - - 5 51 | g6g5 | Identify any Black knight outposts on the board. | g5 | outposts |
1rr3k1/5ppp/4p3/RnBp4/1P1P4/4P2P/5PP1/5RK1 w - - 7 31 | Rfa1 | Identify any White knight outposts on the board. | a5 | outposts |
8/2n5/1r5P/2R2pk1/1Pp5/2P1K3/5P2/8 b - - 2 3 | Re6+ | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qkb1Q/1p6/1n2p1p1/3pP3/p2P4/P5P1/1P5P/n1B1K1NR b Kq - 0 18 | Nc2+ | What piece is on d8? | Black Queen | occupancy |
1r3rk1/1bq2pbp/p1nppnp1/p1p3B1/2P1P3/RNNP4/1P1QBPPP/5RK1 b - - 7 17 | Ba8 | Does White have any passed pawns? | No | structure |
2r2r1k/1b2q2p/1p3p1Q/pP1P1P2/P1Ppn3/R4B1P/8/5NRK b - - 1 7 | Ng5 | Are there any open files in this position? | Yes: e, g | files |
2rq1rk1/1p3ppp/p1Nb1n2/3p4/8/2N1B3/PPP2PPP/R2Q1RK1 b - - 0 12 | bxc6 | Does Black have any isolated pawns? | Yes: d5 | structure |
8/8/1R6/8/1k3P1p/8/1KB5/5r2 b - - 1 46 | f6b6 | Is the White king in check? | No | check |
4k1nr/r4ppp/1p6/p2pq3/P1B2p2/1Q2b3/1PP3PP/1K1R1R2 w k - 0 18 | Rxd5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
3r2k1/p2R2p1/1p4np/2p2N2/2P1pP2/2P3P1/P6P/2K1R3 b - - 0 24 | Rxd7 | Does White have any isolated pawns? | Yes: a2, c3, c4 | structure |
r1b1k2r/pp3pb1/6p1/q1pNn3/4P3/4N1P1/PP1B1PBn/R2QR1K1 b kq - 0 18 | Qxd2 | What piece is on g5? | Empty | occupancy |
8/5p2/3p1kp1/4b3/6P1/1P1NR2P/5PK1/1r6 w - - 7 44 | h4 | Does Black have any isolated pawns? | Yes: d6 | structure |
r3k1n1/4pp2/6q1/3p4/p3P1b1/2P1B1Q1/P1P3P1/3R1K2 b q - 3 22 | Bxd1 | Identify any White knight outposts on the board. | None | outposts |
8/1K6/P4n1P/5k2/8/8/8/8 b - - 2 66 | Ne4 | Is the move from f5 to c4 legal? | No | legality |
rnbqk1nr/pp3pbp/3pp1p1/1N1N4/2P1PB2/8/PP3PPP/R2QKB1R b KQkq - 1 10 | exd5 | Does White have any isolated pawns? | No | structure |
r1b1nrk1/p1q2p1p/2pbp3/2ppN2p/5P2/1P2P1R1/PBPP2PP/RN4K1 b - - 1 13 | Ng7 | Are there any open files in this position? | No | files |
8/5p2/1p4p1/1k5p/4p3/5bP1/5K2/1R6 b - - 3 48 | a1b1 | Is the Black king in check? | Yes | check |
3r4/n4pkp/6p1/1P6/P7/4P1P1/2RN1P1P/6K1 b - - 0 36 | b4b5 | What is the material balance in this position? | White is up 3 pawns of material | material |
r2qrnk1/1b2bppp/p4n2/1p1pN1B1/2pP1P2/2N1PQ2/PP4PP/1BR1R1K1 w - - 3 16 | Ne2 | Is the White king in check? | No | check |
Rnbqkbnr/8/8/1P1P1P1P/1p1p1p1p/8/8/1NBQKBNR b Kk - 0 13 | Qxd5 | What is the material balance in this position? | White is up 5 pawns of material | material |
r4rk1/1b2bppp/p2ppn2/qpn5/3NP3/P1N1BP2/BPP1Q1PP/2KR3R w - - 7 14 | Qe1 | Is the Black king in check? | No | check |
r1b2rk1/1pBnb1pp/3p2q1/P2P4/2N1pp2/8/2P1BPPP/R2QR1K1 w - - 0 21 | Bh5 | Is the move from c2 to f6 legal? | No | legality |
q6k/1B4pp/5p2/1Q2p3/1b2P2P/1P3PP1/8/4nK2 b - - 1 45 | Qf8 | Is the move from e1 to b8 legal? | No | legality |
2r3k1/5pp1/p1pBb1rp/2P5/nP1Np3/P7/3R1PPP/4R1K1 b - - 2 29 | Nc3 | What piece is on b1? | Empty | occupancy |
5rk1/6q1/b5Q1/pp1pR3/3p4/3P1N2/PPP2K2/8 w - - 1 32 | Rg5 | Identify any Black knight outposts on the board. | None | outposts |
8/5p1k/6p1/P2R3p/3p3P/r5P1/4PPK1/8 w - - 0 35 | f4 | Identify any Black knight outposts on the board. | c3 | outposts |
3r3k/2p1qppp/p1n5/1p2Pn2/5B2/1Q3N1P/PP3PP1/5RK1 w - - 0 21 | Bg5 | What piece is on b8? | Empty | occupancy |
7Q/p4kr1/1p1R3p/6p1/2P3q1/1P4P1/P6P/6K1 w - - 4 41 | Qxh6 | Is the move from g1 to f1 legal? | Yes | legality |
4k3/p2nb3/1n2Q3/2q2N2/1p1p4/5b2/PP3PPP/4R1K1 b - - 2 27 | Kd8 | What piece is on a1? | Empty | occupancy |
rnbqk1nr/ppppppbp/6p1/8/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 3 | f4 | Is the White king in check? | No | check |
r2qkb1r/1ppB1pp1/p2p1n1p/4n3/4P3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 0 9 | b5d7 | Is the Black king in check? | Yes | check |
1r2r2k/pb5p/1p1q1N2/3p1pP1/3P4/5Q2/PP6/4RRK1 b - - 1 32 | Re4 | Does Black have any passed pawns? | Yes: f5 | structure |
r1b2rk1/1p3ppp/pq2p3/8/2Pb4/1P3BP1/P4P1P/1RBQ1RK1 b - - 3 18 | e5 | Does White have any passed pawns? | No | structure |
3q1rk1/p1p1bppp/4p3/3bP3/3PNn2/P4N2/1Q1R1PPP/4R1K1 b - - 3 21 | Qa8 | Identify any Black knight outposts on the board. | None | outposts |
3r2k1/p1q2p1p/1p1rb1p1/2pBn3/2P1PN2/6P1/P4PP1/1R1Q1RK1 w - - 1 20 | Qb3 | Is the move from f4 to h1 legal? | No | legality |
3r4/4k2p/1p1r1pp1/p1p5/P7/1P4P1/4PPBP/1nRnBK2 w - - 0 28 | Rxb1 | Is the move from g2 to b7 legal? | Yes | legality |
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