fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r4rk1/pb2qp1p/6p1/8/3Np3/4P3/2Q2PPP/RR4K1 w - - 0 21 | Qb3 | Is the Black king in check? | No | check |
8/8/8/pB1P4/P2QP3/8/k2K4/8 w - - 10 59 | a1a2 | Identify any White knight outposts on the board. | c6, d5, e6, f5 | outposts |
r1bq1bn1/pp2p1kr/2p3N1/6Qp/3P2pP/2P5/PP3PP1/R1B1K2R w KQ - 4 16 | Nxe7+ | Does Black have any isolated pawns? | Yes: e7 | structure |
4rrk1/1p1n1qpp/p1b5/3pp3/1P6/P1NB1PQ1/2P3PP/4RRK1 b - - 0 21 | Qf4 | Does Black have any passed pawns? | No | structure |
r1bq1rk1/pp3pbp/2n3p1/1BnpP3/8/1PN1B3/P3NPPP/R2Q1RK1 b - - 0 14 | d4 | Is the move from d8 to c7 legal? | Yes | legality |
2r2rk1/pp1n1ppp/4p3/q2pPn2/1b1P4/1P1QBN1P/P1RN1PP1/R5K1 b - - 10 17 | Nb8 | What is the material balance in this position? | Equal | material |
r2qkb1r/pbpn1pp1/1pn1p3/3pP2p/5P2/3P1NP1/PPPNQ1BP/R1B1K2R b KQkq - 1 9 | h4 | Are there any open files in this position? | No | files |
8/3k4/7Q/3PR3/5K2/8/8/8 b - - 0 56 | d4d5 | What is the material balance in this position? | White is up 15 pawns of material | material |
1r1qkb1r/p1ppnppp/4p3/np1P4/4P3/P4NP1/1P3P1P/R1BQKB1R w KQk - 1 18 | h4 | What piece is on c7? | Black Pawn | occupancy |
1rb2rk1/3p1p1p/2pN1p2/p1P5/2B5/1P6/P4PPP/4R1K1 b - - 1 29 | a4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3r3/p1kn4/1p2b1pp/n1p2p2/2P1PP2/2PB3P/P2N2K1/2B1RR2 b - - 3 21 | Rad8 | Is the d-file open, semi-open, or closed? | open | files |
3rr3/pp1q1kpp/2n2p2/n1Pp4/6b1/3Q1NB1/PPB2PPP/3RR1K1 b - - 12 23 | g6 | Is the move from h7 to a5 legal? | No | legality |
4rrk1/1pq2p1p/p3bnp1/2np4/P2N4/2P1NB2/QP3PPP/3RR1K1 b - - 11 24 | Rd8 | Is the move from g6 to b7 legal? | No | legality |
rn5k/1pp1b1pp/p2p2n1/3Ppr2/2P5/4BN2/PP1N1PPP/R4RK1 w - - 0 17 | Ne4 | Identify any Black knight outposts on the board. | None | outposts |
1r3rk1/b3nppp/p7/PpP5/4pBQ1/7P/1q3PP1/2R1R1K1 w - - 0 23 | Qd7 | What piece is on f7? | Black Pawn | occupancy |
4k2r/4bp2/p2p1p2/N2Pp3/7P/3P1P2/P7/1K5R b k - 0 24 | Rh5 | Is the Black king in check? | No | check |
5rk1/pp1R1pp1/7p/4rQ2/6P1/P3P3/1P2KPq1/2R5 w - - 1 23 | Qf4 | Is the move from f5 to e4 legal? | Yes | legality |
rn3rkR/ppp5/6p1/5bN1/3p4/3BnNP1/PP6/2K4R b - - 6 22 | h7h8 | What is the material balance in this position? | Black is up 2 pawns of material | material |
4rr1k/1Qp2pp1/1p1p2b1/4n2p/4Pq2/1BP2PN1/PP4PP/R4R1K b - - 0 23 | d5b7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bq1rk1/pp2bpp1/2np1n1p/4p3/4P3/2N2N2/PPP1BPPP/R1BQR1K1 w - - 4 10 | b3 | What piece is on f7? | Black Pawn | occupancy |
6k1/2bq1p1p/6p1/3n4/2BP3R/3Q1P2/3B1P1P/r6K w - - 0 38 | Kg2 | Is the move from d2 to e1 legal? | Yes | legality |
r2r4/1p2ppbk/2pnb1pp/p3N3/Pn1PPP2/2B3PP/1P1N2K1/R1R2B2 b - - 2 23 | f5 | Does Black have any passed pawns? | No | structure |
6k1/4r1Pn/p5QP/1p1qp3/4n3/P6R/1PP3PK/8 w - - 5 33 | Rd3 | Is the move from a3 to b8 legal? | No | legality |
2r1k2r/4nppp/2pRp3/ppQ1P3/8/2P5/5PPP/6K1 w - - 2 23 | Qa7 | Is the move from h2 to e5 legal? | No | legality |
r1b2rk1/p1p2ppp/1pn1pn2/q7/1b1P2P1/1QN2N1P/PP1BPP2/R3KB1R w KQ - 1 11 | Rc1 | Is the move from f2 to b4 legal? | No | legality |
rnb1kb1r/pp3ppp/1qp5/3p4/8/1PP1PNP1/P4PBP/R1BQK2R b KQkq - 1 9 | Be7 | Does Black have any isolated pawns? | No | structure |
r2q1r1k/6bp/p1npb3/1p2pp2/4BN2/2P5/PPNQ1PPP/R4RK1 b - - 1 17 | Bd7 | Are there any open files in this position? | No | files |
4rrk1/pb1qnpb1/6pp/3P4/1p1n1NP1/6QP/1PP2RB1/2BN1R1K w - - 0 28 | c4 | Is the e-file open, semi-open, or closed? | open | files |
4k3/7p/3K4/8/8/6p1/5p2/1R6 w - - 2 2 | Ke6 | Does White have any isolated pawns? | No | structure |
4r1k1/1p3pp1/p2n3p/1bNp4/1n1P4/5N1P/PP3PP1/1BR3K1 w Q - 4 10 | a3 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/1b2bp1p/pq2p1p1/1p2P3/5B2/P2B4/1P2QPPP/R1r3K1 w - - 0 22 | c8c1 | Is the White king in check? | Yes | check |
5rk1/1p3p2/p6p/3prN1q/PPnNp1R1/2P1P1P1/6QP/4R2K b - - 0 30 | Qxg4 | Is the Black king in check? | Yes | check |
2rrb1k1/2q1nppp/4p3/1p1pP3/3N1P1P/1P4Q1/P2R2PK/1B1R4 b - - 0 27 | Qc3 | Does White have any passed pawns? | No | structure |
r1bqk2r/ppp1bppp/4pn2/8/3P4/3B1N2/PPP2PPP/R1BQ1RK1 b kq - 2 9 | b6 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/1pB2pk1/3p2p1/PP1P2Kp/2N1Pp2/5P1P/6n1/8 w - - 2 43 | e5 | Does Black have any isolated pawns? | Yes: b7, d6 | structure |
8/8/r5R1/2pk4/8/3K4/2P3PP/8 w - - 1 45 | d6d5 | What is the material balance in this position? | White is up 2 pawns of material | material |
r3kbnr/pp1n1ppp/2p1p3/8/2qB4/3P1BP1/P2NPP1P/R3K2R w KQkq - 0 12 | Nxc4 | Identify any Black knight outposts on the board. | None | outposts |
rn1qk2r/pp3ppp/1n2p3/4PBB1/1bPp4/2N2N2/PP4PP/R2QK2R b KQkq - 1 11 | Qd7 | Is the move from f7 to e8 legal? | No | legality |
3r2k1/5p1p/4p1p1/6Q1/8/1B1P4/Pq2KPPP/8 w - - 1 31 | g7b2 | Is the Black king in check? | No | check |
r1b3k1/pp1nq1bp/2pp2p1/4pr1n/2PP4/2N1B1PP/PP3PBN/R2Q1RK1 w - - 0 13 | g4 | What piece is on f6? | Empty | occupancy |
8/1pp5/1kb4R/p7/8/PK3r2/2P5/8 w - - 2 43 | f2f3 | Is the White king in check? | Yes | check |
1r4k1/8/RB1p4/1P2bK2/P6p/8/8/8 w - - 2 47 | Kg4 | Identify any White knight outposts on the board. | a6, b5 | outposts |
2r5/1Q1k1r2/2nP1B1p/P1p3p1/8/5N1P/1PP2PP1/R3R1K1 b - - 2 26 | b6b7 | Is the White king in check? | No | check |
5b1k/1r6/7p/q2pN3/2pBnP2/2N2R1P/6P1/6K1 w - - 0 39 | Nxc4+ | Are there any open files in this position? | Yes: a, b, e | files |
r1bq1rk1/pp2b1pp/2p2p2/3n4/3p4/1P2PNP1/PB3PBP/RQ3RK1 w - - 0 14 | Nxd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7k/3n2Rp/2q2p1N/5P2/1p1Pp2Q/1rp1P2P/8/5RK1 b - - 0 43 | Kxg7 | Is the move from c3 to a2 legal? | No | legality |
r1q1r1k1/pb2bppp/1pp1p3/4n3/2PPQB2/6P1/PP3PBP/R2R2K1 w - - 0 15 | Bxe5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1bqk1nr/pp2ppbp/2np2p1/2p5/4PP2/3P1N2/PPP1B1PP/RNBQ1RK1 b kq - 1 6 | Nh6 | What piece is on c4? | Empty | occupancy |
r5r1/1p1nbkpQ/p2p1p1N/P3p3/4P3/q1B5/3KnPB1/2R4R b - - 5 30 | f5h6 | Is the Black king in check? | Yes | check |
r3k2r/1R1bbppp/p3p3/3pP3/3B1P2/2N5/P1P2KPP/7R w kq - 1 18 | Rhb1 | Is the move from b7 to d1 legal? | No | legality |
2r1r1k1/p1pb1p1p/1p1qp2Q/5p2/3P4/3B3R/PPP2PPP/R5K1 w - - 4 21 | Rg3+ | What piece is on c1? | Empty | occupancy |
r1r1kq2/5p2/p2np3/1pp5/2P2QPP/P1NPP3/1B6/5RK1 b - - 1 32 | Rab8 | Is the move from f8 to h6 legal? | Yes | legality |
r5k1/P3Qpb1/8/8/P1bP4/4P3/1B3PK1/8 w - - 1 33 | e6c4 | What is the material balance in this position? | White is up 5 pawns of material | material |
r1bqkbnr/pp1ppppp/2n5/8/2Pp4/3Q4/PP2PPPP/RNB1KBNR w KQkq - 2 4 | b8c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r4k1N/ppp1q1pp/2np4/2bB4/4n1b1/2P5/PPQ3KP/RNB4R b - - 0 15 | Bh3+ | What is the material balance in this position? | White is up 3 pawns of material | material |
rnb1k2r/ppppqppp/5n2/8/1bB1P3/1QN2N2/PB3PPP/R3K2R b KQkq - 6 8 | d5 | Are there any open files in this position? | No | files |
8/7p/6p1/4pp2/2k4P/r7/5K2/8 w - - 0 53 | Kg2 | Does Black have any isolated pawns? | No | structure |
rnbqk2r/ppppnpbp/4p1p1/8/3PP2P/2N5/PPP2PP1/R1BQKBNR w KQkq - 1 5 | h5 | Is the move from d4 to f8 legal? | No | legality |
4r1k1/pp3ppp/2p3n1/8/2P3n1/2N3PR/PB1r2BP/1R4K1 w - - 3 25 | Ne4 | What piece is on a3? | Empty | occupancy |
r3k2r/1bq1bppp/p2ppn2/2n5/1p1NPPPB/8/PPPNQ1BP/2KR2R1 b kq - 7 16 | Rc8 | What piece is on h1? | Empty | occupancy |
r3r1k1/pbp1qppp/1p3n2/8/2PP4/1Q3N1P/PB3PP1/R4RK1 b - - 4 19 | Ne4 | Is the move from f6 to e4 legal? | Yes | legality |
3r4/pp2n2k/4Prpp/8/1q1p3P/5B2/PB2QPP1/3R2K1 w - - 2 26 | h5 | Does White have any passed pawns? | Yes: e6 | structure |
2r2rk1/1p2bppp/p1n1b3/q1P1p1N1/P5n1/2N1B1P1/1P2PPBP/R1QR2K1 b - - 9 15 | Bxc5 | Are there any open files in this position? | Yes: d | files |
2rqr1k1/3b1p1p/3P2p1/8/p3N3/Ppb2P2/3B2PP/R2QK2R b KQ - 1 4 | Rxe4+ | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/8/8/1p2k1p1/2p1P1P1/2K5/P7/8 b - - 1 57 | d3c3 | Identify any White knight outposts on the board. | d5 | outposts |
3r1r1k/3P2pp/1R6/5p2/4pP2/4Q2P/1p4P1/3q3K w - - 0 37 | c2d1 | Is the White king in check? | Yes | check |
3rr3/1p3ppk/p6p/8/4b3/1Q5P/1bR2PPB/5RK1 b - - 5 25 | Bxc2 | What piece is on h5? | Empty | occupancy |
2bqk2r/1p2npbp/3p2p1/2P1p3/1pQ1P3/5N2/2PP1PPP/BN2R1K1 b k - 1 13 | Qa5 | Does Black have any isolated pawns? | Yes: b4, b7 | structure |
5k2/p1r1b2Q/1p1n4/4qp2/8/P5R1/5PPP/3R2K1 b - - 5 31 | Ke8 | Is the move from d6 to c4 legal? | Yes | legality |
8/p1p2kpp/8/2p5/8/1Pn3PP/P2K2P1/3R4 b - - 0 30 | e2d2 | Identify any Black knight outposts on the board. | d4 | outposts |
q4rk1/1b1nbppp/2p1p3/4P3/1p1P4/3B1N2/1P3PPP/2BQ1RK1 w - - 1 17 | Bg5 | Identify any White knight outposts on the board. | c5 | outposts |
rn2k2r/3p1ppp/p1q1p3/bp2P3/5P2/5QN1/P1P3PP/1RB2RK1 w kq - 1 16 | Ne4 | Identify any White knight outposts on the board. | None | outposts |
6k1/ppp3pp/5p2/6q1/N1P5/1P2bP1K/P7/R4R2 b - - 8 35 | h5 | Identify any White knight outposts on the board. | None | outposts |
r2qk2r/pp1nppbp/6p1/1Q1P2B1/8/2N2P2/PP3P1P/R4RK1 b kq - 3 15 | O-O | Is the move from h7 to g8 legal? | No | legality |
r3kb1r/pp2q3/2p4p/3n1pp1/Q1B5/5PB1/PP3P1P/2KR3R b kq - 1 17 | e2c4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bq1rk1/pp2p1bp/2n3pn/2p1Pp2/8/2PP1N2/PP2B1PP/RNBQ1R1K b - - 0 10 | f4 | Are there any open files in this position? | No | files |
2kr4/1p3p1Q/p1bqp3/n2p4/P4PP1/5n1P/2P1NK2/R4B1R w - - 4 23 | Bg2 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
1r5Q/3bk1n1/p2p1rp1/2pPp1N1/2p1P1P1/8/P3qP2/5RK1 w - - 3 29 | Qxg7+ | Is the White king in check? | No | check |
r2q1rk1/pb1nbppp/1p2pn2/1N1P2B1/3Q4/5NP1/PP2PPBP/R2R2K1 b - - 0 12 | exd5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r3kb1r/pp2Q2p/2p2p2/6p1/2b3P1/8/PPP2P1P/R3K1NR b KQkq - 0 20 | e3e7 | Is the Black king in check? | Yes | check |
4n1k1/1q3ppp/8/1p2p3/1b1pP2P/1B1P1NP1/5P2/2Q3K1 b - - 1 34 | Qe7 | Is the move from e8 to f4 legal? | No | legality |
r3k2r/5pb1/pqNp1np1/1p1Pp2p/2P5/5P2/PP1Q2PP/1K1R1B1R b kq - 0 17 | bxc4 | Does White have any isolated pawns? | No | structure |
8/7P/6K1/5p2/4p3/1k4P1/p4P2/8 w - - 0 56 | h8=Q | Identify any White knight outposts on the board. | h4 | outposts |
8/4b3/p3k3/2p1P1p1/2PpK1Pp/1N5P/P7/8 w - - 15 108 | Nc1 | Identify any Black knight outposts on the board. | c3, e3 | outposts |
r1b2rk1/2pq1ppp/P1N1pn2/3nN3/3P4/4P3/1P2BPPP/R2Q1RK1 b - - 10 16 | c4e5 | Identify any White knight outposts on the board. | c5 | outposts |
rnbqk2r/pp2ppbp/3p1np1/2p5/2PPPP2/2N5/PP4PP/R1BQKBNR w KQkq - 0 6 | e5 | Is the a-file open, semi-open, or closed? | closed | files |
8/7k/3p2p1/3P4/1p3QB1/1P4PK/8/6q1 w - - 3 56 | Qf3 | Does Black have any isolated pawns? | Yes: b4, d6, g6 | structure |
r1bqk2r/pp1p1ppp/2N1pn2/8/1bP5/2N5/PPQ1PPPP/R1B1KB1R b KQkq - 0 7 | bxc6 | What piece is on h7? | Black Pawn | occupancy |
r1r2k2/1b3ppB/ppq1pb2/2ppB3/5P2/1P2P3/P1PPQ1PP/R4RK1 w - - 1 17 | Qg4 | Are there any open files in this position? | No | files |
2Q5/pp2k1pp/P1p1P1q1/3p4/8/8/1PPr2PP/6K1 w - - 0 25 | Qd7+ | Identify any Black knight outposts on the board. | e4 | outposts |
2r3k1/5rpp/4b3/3p1n2/BP2p3/P6P/1B4P1/4Q1K1 b - - 0 30 | h5 | Are there any open files in this position? | Yes: c, f | files |
3R1nk1/2r4p/1pB1p1p1/5pq1/PpP2R2/4N1P1/6Q1/6K1 b - - 0 38 | Qxd8 | Are there any open files in this position? | Yes: d | files |
r6r/1ppb1pk1/1n1b1qp1/p1NPp3/P3P2p/1P2Q1P1/3N1PBP/R1R3K1 b - - 5 24 | Bc8 | What piece is on d5? | White Pawn | occupancy |
r2qnrk1/3nbppp/3p4/p3pPP1/1pb1P3/1N2B3/PPPQN2P/2KR1B1R w - - 1 16 | Kb1 | Does Black have any isolated pawns? | No | structure |
r3k3/1b1n1p1p/1q1bpp2/1B6/3p2r1/6P1/PP1NQP1P/R1BR2K1 b q - 1 18 | Ke7 | What piece is on a1? | White Rook | occupancy |
rnbqkbnr/ppp2ppp/8/3p4/3N4/3p2P1/PPP1PP1P/RNBQKB1R w KQkq - 0 5 | Qxd3 | Is the move from g3 to b3 legal? | No | legality |
r1br4/pppqkp2/4pQ2/3pP1p1/2P5/P1NBP3/1P3PPP/R3K2R b KQ - 6 18 | h8f6 | Is the Black king in check? | Yes | check |
Rn1k1b1r/1b3p2/4pq1p/1B2N3/3P3p/8/1P3PPP/3QK2R b K - 0 16 | Bb4+ | Does White have any isolated pawns? | Yes: b2, d4 | structure |
r1b1qrk1/ppp2ppp/2nppn2/8/2PPP2P/P1P2P2/6P1/R1BQKBNR b KQ - 0 9 | Nh5 | Identify any Black knight outposts on the board. | None | outposts |
4r3/p4pkp/8/3Bbb2/P2P1ppP/2N3n1/1PP2KPR/R1B2Q2 b - - 0 21 | Bxd4+ | What is the material balance in this position? | White is up 15 pawns of material | material |
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