fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r4rk1/1p3pp1/pPp2n1p/P1Pp3q/3P1P2/2N5/2Q2PB1/R4RK1 b - - 0 26 | Ng4 | Does White have any isolated pawns? | Yes: f2, f4 | structure |
r3k2r/1pp2p2/pb1q4/2NPp1pp/4Pn2/5Q1P/PB3PPN/2R2RK1 b kq - 0 20 | b3c5 | What is the material balance in this position? | White is up 2 pawns of material | material |
5rk1/p2rbp1p/2pNb1p1/4p3/8/4B3/PPPR1PPP/3R2K1 w - - 0 20 | Nf5 | Identify any White knight outposts on the board. | None | outposts |
r6r/1kpnbpp1/pp2q3/1P2p2p/2N1P3/3P4/2PB1PPP/RR2Q1K1 b - - 0 19 | a5 | Is the move from a6 to a5 legal? | Yes | legality |
r1b1k2r/pp1p1ppp/2qN1n2/2pn4/2N5/P3P3/1P3PPP/R1BQKB1R b KQkq - 0 12 | b5d6 | Is the Black king in check? | Yes | check |
r3kb1r/1p1n1ppp/p3pn2/2P5/7N/2N1P3/PP3PPP/R1B1K2R w KQkq - 0 14 | c6 | Is the move from b2 to b4 legal? | Yes | legality |
r1bq1rk1/1n2b2p/pn1p2p1/2pPpp2/pPN1P3/2P2N1P/2B1QPP1/R1B1R1K1 b - - 1 17 | cxb4 | Does White have any isolated pawns? | No | structure |
8/8/2k1p1p1/b4p1p/2pP1P1P/PpP2PP1/8/2BK4 b - - 0 54 | Bxc3 | Identify any White knight outposts on the board. | c5 | outposts |
4r1k1/1p1rq1pp/2p1p3/p1P1Ppb1/P2P4/1PNR1QP1/6KP/3R4 w - - 0 34 | Nb1 | Does White have any passed pawns? | No | structure |
3r2k1/ppq2ppn/2p3n1/2b3Pp/2P1P2P/5P2/PPQR4/3N1K2 b - - 4 24 | h2d2 | What is the material balance in this position? | Black is up 5 pawns of material | material |
rq2r1k1/5ppp/p4n2/N1pp4/4b3/2P4P/PP3PP1/R2QRBK1 w - - 0 23 | Qd2 | Is the Black king in check? | No | check |
r1bq1rk1/1p1n1ppp/p1pbpn2/3p4/2PP4/1PNBPN2/P2B1PPP/R2Q1RK1 w - - 7 10 | e4 | What piece is on g1? | White King | occupancy |
r1q2r2/p4pk1/4p1p1/1p2P3/2p4Q/4b3/PP3PPP/3RR1K1 w - - 0 23 | Qf6+ | Does White have any passed pawns? | No | structure |
6k1/1pbb1qpp/2p2pn1/p2p1n2/P2P4/2P1N1P1/1P1B1PBP/3QN1K1 b - - 2 24 | Nxe3 | What piece is on d2? | White Bishop | occupancy |
2rr2k1/p4ppp/bp1np3/8/1B6/P4PP1/PR2PKBP/7R b - - 6 23 | Nb5 | What piece is on h5? | Empty | occupancy |
r2q1rk1/2p1bppp/p3p3/8/Pp1PQ3/4PN2/1P3PPP/2R1K2R b K - 0 15 | c5 | Does White have any passed pawns? | No | structure |
8/6R1/6p1/4p3/5k1Q/3K1P2/6rP/8 b - - 4 40 | h7h4 | Is the Black king in check? | Yes | check |
rnbqkb1r/2p1npp1/1p2p2p/p2pP2P/3P4/P1N2N2/1PP2PP1/R1BQKB1R w KQkq - 0 9 | Bb5+ | What piece is on d2? | Empty | occupancy |
1rb1k2r/1p1p1ppp/pNq1p3/8/1b2n3/4B3/PPP1BPPP/R2Q1RK1 w k - 2 12 | Bf3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnb2r2/ppp3k1/7p/8/1bBPPBnq/2N2QR1/PPP5/R3K3 b Q - 3 16 | Be7 | Is the move from g7 to b1 legal? | No | legality |
5rk1/ppr2p2/5Qp1/q2pP3/2pP3N/2P5/6PP/5RK1 w - - 0 27 | Nxg6 | Is the Black king in check? | No | check |
rnbq1rk1/pp2ppbp/2p3p1/3nN3/2BP1P2/2N1P3/PP4PP/R1BQK2R b KQ - 0 9 | Be6 | What is the material balance in this position? | Equal | material |
6k1/4bpp1/1pp5/6np/1PP1q3/4Nn2/3Q4/2K5 w - - 1 39 | h4f3 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r1bk3r/ppppbQpp/1q6/8/2B5/P1p5/1P3PPP/3RR1K1 w - - 0 22 | Qxe7# | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1bq1rk1/p3ppbp/1np3p1/2p5/2NP4/2P3P1/P2BPPBP/R2Q1RK1 w - - 2 13 | Na5 | What piece is on d5? | Empty | occupancy |
r1b2rk1/pp1p1pbp/n1pB1np1/2P5/Q2Pq3/5N2/PP2P1PP/R2NKB1R w KQ - 7 13 | e3 | Does Black have any passed pawns? | No | structure |
8/1p6/p4k2/7R/P4r1P/1P6/3K4/8 b - - 0 39 | Kg6 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1qkbnr/1bpppppp/p7/1p6/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 4 | Bd3 | Identify any Black knight outposts on the board. | None | outposts |
4k3/4nppp/4p3/3p4/2pNP3/5P2/2P2KPP/8 b - - 0 33 | e3e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/4k2p/1p3pp1/p1p5/8/PP2P1P1/4RPBP/r2rBK2 b - - 2 29 | Rxa3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
6k1/4bpp1/1nq1p2p/pp1b4/3P4/PPQ2BPP/1B1N1PK1/8 b - - 1 31 | Bxf3+ | Is the move from e7 to c8 legal? | No | legality |
r2q2k1/pb5p/1p2n1nr/5p2/2P3p1/PQ6/1P1N1PPP/3RRBK1 w - - 0 21 | Rxe6 | Identify any White knight outposts on the board. | d5 | outposts |
2r3k1/2b1R1p1/p4pNp/2p1pP2/4P1PP/8/1PP1K3/8 w - - 7 35 | Rd7 | Is the move from e7 to g7 legal? | Yes | legality |
r2qk2r/pp1bbppp/1nn1p3/3pP3/2pP1N1P/P1P1BN2/1P3PP1/R2QKB1R b KQkq - 0 11 | h6 | Are there any open files in this position? | No | files |
r4rk1/5pbp/3pbnp1/1Np5/Pq2P3/1P2BPN1/5KPP/1R1Q3R b - - 4 19 | c4 | Are there any open files in this position? | No | files |
4R3/5pk1/1b6/5p2/5P1p/4PKP1/4N2q/2R5 w - - 0 73 | gxh4 | Identify any Black knight outposts on the board. | g3 | outposts |
8/5k2/8/8/8/3K4/4r3/3q4 w - - 8 64 | f1d1 | Is the White king in check? | Yes | check |
r1bqk1r1/ppp1bp1p/5npB/4Q3/2B1P3/2N5/PPP2PPP/R3K2R b KQq - 4 10 | Ng4 | What is the material balance in this position? | White is up 1 pawn of material | material |
5r1k/1R4p1/7p/p2p3P/P2P2R1/8/1P1r2P1/6K1 w - - 3 39 | Rgxg7 | Is the f-file open, semi-open, or closed? | open | files |
1r3rk1/2q2ppp/p1b5/Pp1p4/nQ6/3P2P1/1P1NPP1P/R1R3K1 w - - 0 23 | Nf3 | What piece is on d6? | Empty | occupancy |
r1bq2k1/1p4pp/p1p1p2r/3pPp2/2P1nP2/1P1BP3/P5PP/R2QNRK1 b - - 0 14 | Qh4 | What is the material balance in this position? | Equal | material |
3qk2r/1pr2pbp/p2p1np1/3Pp3/1n6/2N4B/PPP2PPP/R1BQ1R1K w k - 2 15 | a3 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/5k1p/1p1K1p2/p4P1p/1r6/5B2/8/4R3 w - - 0 42 | h6h5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1k5r/1p6/p1p5/P1PbP1p1/6P1/3QBP2/4KR2/7q b - - 10 48 | Qa1 | Are there any open files in this position? | Yes: d, h | files |
2r2rk1/pb2bppp/1p2pn2/2p1N3/2PP1B2/3B4/PP2QPqP/1K1R2R1 b - - 1 15 | Qh3 | Does White have any isolated pawns? | Yes: f2, h2 | structure |
3r2k1/1q3pp1/pp5p/3p4/P2P4/1P2Q1P1/5PP1/2R3K1 b - - 0 30 | Qc8 | Does Black have any passed pawns? | No | structure |
6k1/1p3pp1/6bp/3B2b1/6P1/3n1K2/PP1R4/8 w - - 6 34 | f6g5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2N3k1/3n2pp/1p2pn2/p2p1p2/3P4/1P2PN2/P4PPP/5K2 w - - 0 22 | Ng5 | Identify any White knight outposts on the board. | None | outposts |
5br1/3pkp2/5n2/1P2Q2p/4P3/2PP1P2/3B2qP/1N2K1NR b - - 4 28 | b8e5 | Is the Black king in check? | Yes | check |
rnb1kb1r/ppp2ppp/5n2/3q4/5P2/3B1N2/PPPN2PP/R1BQK2R b KQkq - 1 7 | Be7 | Is the e-file open, semi-open, or closed? | open | files |
4rrk1/1p3nqp/p4b2/3Q4/3N1p2/P4P1b/1PR2BPP/4RBK1 b - - 0 40 | Rxe1 | Does Black have any isolated pawns? | Yes: f4, h7 | structure |
4r1k1/pp2rppp/3b4/6P1/3P2NP/3BPK2/PP6/2Q5 w - - 7 30 | d8e8 | What is the material balance in this position? | White is up 3 pawns of material | material |
k1b2r2/1pq1nrp1/p1n1pp1p/3pP2P/P1pP1PP1/Q1P1B1N1/2PK2B1/1R3R2 w - - 2 22 | Qc5 | Does White have any isolated pawns? | Yes: a4 | structure |
r4rk1/1n3qp1/p2p3p/1p1npp2/1P1N4/1B1P3P/P4PP1/R2QR1K1 w - - 2 24 | Qf3 | Is the move from h3 to g8 legal? | No | legality |
5r2/p7/1p6/1P1k4/P2P2R1/4K3/8/8 b - - 0 53 | Kc4 | What piece is on f8? | Black Rook | occupancy |
8/3nk3/1pR5/p2p1r1p/P2P1p1P/3N1P2/1P3K2/8 w - - 5 37 | b3 | Is the e-file open, semi-open, or closed? | open | files |
r5k1/6bp/1p1n1pp1/3p4/qPpPpP2/2P1P1P1/1Q1B1N1P/1R4K1 b - - 2 30 | Bf8 | What piece is on g1? | White King | occupancy |
8/1B3kp1/8/p4p2/7P/4K3/n7/8 w - - 0 43 | Bd5+ | Is the move from h4 to h3 legal? | No | legality |
r1bq1bk1/pp4n1/2n3B1/3p4/2pP4/2N2Q2/PP3PPP/R4RK1 b - - 1 17 | Be6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2q1b1r/1p1k1ppp/p7/3P1b2/1nB2Bn1/N1N2P2/PP2Q2P/R3K2R b KQ - 3 15 | Bc5 | Does White have any isolated pawns? | Yes: d5, f3, h2 | structure |
r2q1bnr/p3kb1p/2Q5/4p3/3P4/2N5/PPP3PP/R3K2R w KQ - 1 18 | Qb7+ | What piece is on c5? | Empty | occupancy |
r1nq1r1k/1ppb1pp1/p2p1b1p/P3p1N1/1P1PP3/2PB3P/1BQN1PP1/R3R1K1 b - - 0 16 | f3g5 | What is the material balance in this position? | White is up 3 pawns of material | material |
1k2r3/ppq2pp1/8/2p1n1PR/6n1/1NP3P1/PP3PB1/1K1Q4 b - - 0 25 | Nxf2 | What piece is on g3? | White Pawn | occupancy |
r1b2rk1/1p2bppp/pB1ppn2/8/4PP2/2N5/PPP1B1PP/2KR3R b - - 0 13 | Bd7 | What piece is on f8? | Black Rook | occupancy |
3q4/p5Q1/1pr3p1/4p1k1/8/2P4R/P4PP1/6K1 w - - 6 36 | Rg3+ | Does White have any isolated pawns? | Yes: a2, c3 | structure |
r2q1rk1/pp2b2p/2n1b1p1/3pNp2/2pP4/2N1PQP1/PPB2PP1/R4RK1 w - - 1 16 | Rad1 | Is the move from e5 to c6 legal? | Yes | legality |
r1b1kr2/pp2n2p/2p1p1p1/q2pP1B1/8/3B3Q/PPPK1bPP/RN5R w q - 2 14 | d8a5 | Is the White king in check? | Yes | check |
r1q2rk1/1pp1npbp/3p1np1/1P2p3/2P5/2NPP1Pb/4NPBP/1RBQ1RK1 w - - 1 14 | e4 | Is the a-file open, semi-open, or closed? | open | files |
r2q1r2/ppp2pk1/2n4p/3NP1pn/2B3b1/3Q2B1/PP3PPP/R4RK1 b - - 2 15 | Nxg3 | What piece is on e7? | Empty | occupancy |
5k2/1p4pP/p7/1p1p4/8/8/2r3PP/6K1 b - - 0 35 | Rc1+ | What is the material balance in this position? | Black is up 7 pawns of material | material |
8/8/5k2/2b5/8/3K3q/7r/1n6 w - - 30 86 | e3c5 | Is the White king in check? | Yes | check |
7Q/4kp1p/p5p1/1Kn1p3/3q4/5P2/PPP4P/RNB4n w - - 0 20 | Kb6 | What is the material balance in this position? | White is up 5 pawns of material | material |
6k1/1p1q2p1/p6p/4P3/P1P2pP1/1Pn1p2P/7Q/2K1R3 b - - 6 36 | Qd4 | Identify any Black knight outposts on the board. | e3 | outposts |
3q4/pp2n1bk/6pp/1P6/4p3/1Q4P1/P4P1P/2BB2K1 b - - 0 28 | Nf5 | Identify any Black knight outposts on the board. | d3 | outposts |
r3k1r1/1bpnqp2/1p1ppn2/p5p1/P1PP4/1QP1P1B1/3N1PP1/R3KB1R w KQq - 2 15 | c5 | What piece is on c6? | Empty | occupancy |
2r2rk1/pp2b1pp/4p3/4q3/QP2p3/P7/4B1PP/R4R1K w - - 0 21 | Qxa7 | Is the d-file open, semi-open, or closed? | open | files |
4k2r/n2b1pbp/3p4/3Npp2/4P3/2P5/PP3PPP/R3K2R w KQk - 0 17 | f3 | What is the material balance in this position? | White is up 1 pawn of material | material |
7k/4Npp1/p2P3p/8/q4P2/6P1/1r1K2P1/3R3R w - - 5 31 | b8b2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1n3k2/6p1/1p3b1p/1P2p3/P7/5Q2/5PPP/2q1K2R w K - 0 27 | c7c1 | Is the Black king in check? | No | check |
2k5/6p1/p1p5/3nBp1p/7P/5K2/P4PP1/8 w - - 0 34 | Bxg7 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
4k1r1/8/4p2P/pp1n2B1/2p3P1/P7/1P6/1K3R2 b - - 0 36 | Rxg5 | Is the move from d5 to c3 legal? | Yes | legality |
r4k2/pq3pbp/1n1pb1p1/2p5/2Pp4/1B4N1/PP1Q1PPP/R4RK1 w - - 2 21 | Rac1 | Is the move from g1 to h7 legal? | No | legality |
2brr3/pp2bkpQ/1q4n1/4p3/4B3/1P6/PBP2PPP/R2R2K1 w - - 0 21 | Rxd8 | What piece is on f7? | Black King | occupancy |
5r2/pp6/2p3k1/4p3/4b3/1P5P/P6K/5R2 w - - 0 41 | Rxf8 | Identify any Black knight outposts on the board. | d4, d5, f4 | outposts |
3r4/2Q3pk/2R3p1/p2pPp2/3P1P1q/7P/1P4P1/6K1 w - - 5 36 | e6 | Is the move from c6 to e6 legal? | Yes | legality |
8/6kp/4P3/3B2b1/1p4P1/4pK2/P1P4P/8 w - - 2 43 | h4 | Is the move from h2 to h4 legal? | Yes | legality |
r4bk1/1pp1npp1/p3rn1p/4p3/PPN1P3/2P2N1P/5PP1/1RB1R1K1 b - - 1 23 | Ng6 | What piece is on f7? | Black Pawn | occupancy |
5bk1/1p6/4P3/3P3p/p7/2P3NK/8/8 w - - 1 50 | Nf5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
2k5/1b2qp2/2p1p2p/1pP3r1/8/Qp6/5PBP/5R1K b - - 1 28 | Qxc5 | Does White have any passed pawns? | No | structure |
r5k1/1N3pp1/4b3/8/6n1/4rNP1/2RRn1BK/8 w - - 4 35 | Kh3 | What piece is on b5? | Empty | occupancy |
r1b1k2r/pp1nb1pp/1qn1pP2/2pp4/3P1P2/2PB1N2/PP2NKPP/R1BQ3R b kq - 0 11 | Bxf6 | Is the move from a8 to a2 legal? | No | legality |
8/5p1k/4p3/1p3p2/P1p2P2/8/8/1K6 w - - 0 41 | axb5 | Does Black have any passed pawns? | Yes: c4 | structure |
1r4k1/4b2p/1p4p1/PR3p2/1P2p3/6PP/5PB1/6K1 b - - 1 29 | Bd6 | Does White have any passed pawns? | No | structure |
3r4/2pk4/2b3pr/pBPpPp1p/5P1P/6R1/P5P1/4K2R w K - 1 28 | e6+ | Is the move from g3 to h3 legal? | Yes | legality |
r7/p4pr1/b1pk3p/2p5/p1B4n/2P2PP1/P6P/R4RK1 w - - 0 26 | Bxa6 | Is the b-file open, semi-open, or closed? | open | files |
1k1rnb1r/1p1b1Rp1/p2pp3/6P1/2R1P3/2N5/PPP3B1/2B3K1 w - - 1 24 | g6 | What is the material balance in this position? | Equal | material |
r1bq1rk1/1p3pbp/p2p1np1/4p3/2BpPP2/N2P4/PPP3PP/R1BQ1RK1 w - - 1 12 | Qf3 | Are there any open files in this position? | No | files |
2r3k1/p4p2/1pq2Pp1/3r3p/5Q2/2P1R3/7P/5RK1 w - - 0 39 | Qh6 | Are there any open files in this position? | Yes: d, e | files |
r4rk1/pp1b2bp/1qn1pp1p/3pP3/3P4/5N2/PPNQBPPP/R4RK1 w - - 0 13 | Bd3 | What piece is on a6? | Empty | occupancy |
r4r1k/1b4pp/p3Bn2/qp6/4P3/2N5/4QPPP/2RR2K1 w - - 1 26 | e5 | Does White have any passed pawns? | Yes: e4 | structure |
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