fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3r1rk1/p4p2/1pn2qp1/2pPp3/8/P1P3N1/3R1PP1/3Q1K1R b - - 0 19 | Ne7 | Identify any Black knight outposts on the board. | a5 | outposts |
4k3/2R4p/p1N4b/1pp1P3/3P1p2/P7/1P2KP1r/8 w - - 1 4 | e6 | Is the move from a3 to h8 legal? | No | legality |
4r1k1/pRr2ppp/2p1P3/3n1Q2/3q4/5B2/P4PPP/4R1K1 b - - 0 22 | fxe6 | Does White have any isolated pawns? | Yes: a2 | structure |
8/1k4Kp/6p1/3n4/8/5PP1/7P/8 b - - 2 45 | f6g7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1bqr1k1/ppp2p1p/2np2p1/8/2PBPn2/2N2P2/PP1QB1PP/2R2RK1 b - - 0 13 | Qg5 | Is the move from f4 to d5 legal? | Yes | legality |
r1bq1rk1/1ppn1pb1/3p1npp/p3p3/2PPP3/2N1BN1P/PP2BPP1/R2Q1RK1 b - - 2 14 | exd4 | What piece is on c2? | Empty | occupancy |
4r1k1/pRr3pp/2p1p3/3B1Q2/3q4/8/P4PPP/4R1K1 b - - 0 23 | g6 | Is the move from d4 to d5 legal? | Yes | legality |
r3k2r/pp1nbpp1/4p1B1/3pP3/q1pP2Q1/2P4P/P1PB1PP1/R4RK1 b kq - 0 17 | Nf8 | What piece is on f4? | Empty | occupancy |
1r4k1/1b6/3pp1p1/1B6/PpRK4/1P3P2/6P1/8 w - - 0 34 | Rxb4 | Are there any open files in this position? | Yes: c, h | files |
1r2r1k1/5pbp/pn1p1np1/q2P4/P1pBPPP1/1p3Q1P/1P6/1B1NRR1K b - - 1 30 | Nbxd5 | Identify any White knight outposts on the board. | d5 | outposts |
1r3rk1/pppqnpp1/3bb2p/4p1PQ/7N/2PP3P/P1P2PB1/1RB1R1K1 b - - 0 16 | g6 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
5bk1/1q3ppn/p2pr2p/2p1pN2/P1P1P1PP/1rP2Q2/3B1P2/R2R2K1 w - - 3 27 | Qd3 | Does Black have any isolated pawns? | Yes: a6 | structure |
r2qk2r/ppp2ppp/8/2p1n2n/2B1P1b1/3PBN2/PPP3PP/R2QK2R w KQkq - 3 11 | Nxe5 | What piece is on c5? | Black Pawn | occupancy |
5b2/1k6/1qp1p1p1/p3Pp1p/P2p1P1P/1PRP2P1/K7/7Q w - - 0 115 | Rc4 | What is the material balance in this position? | White is up 2 pawns of material | material |
4rrk1/pp1b1ppp/2pqpn2/4N3/3P1P1Q/1BP5/P4PPP/3RR1K1 w - - 1 20 | Rd3 | What piece is on e2? | Empty | occupancy |
5rk1/5p1p/3p2pP/8/1p1b1PQ1/1q4P1/8/5RK1 w - - 1 33 | e5d4 | Is the White king in check? | Yes | check |
r2qkb1r/5ppp/pn1pp3/1p4P1/3N1P2/P3B3/1PP3QP/2KR3R b kq - 0 4 | Rc8 | Is the move from a6 to h5 legal? | No | legality |
rnb1kb1r/ppppQppp/5n2/8/4P3/8/PPPP1PPP/RNB1KBNR b KQkq - 0 4 | e5e7 | Is the Black king in check? | Yes | check |
1r4k1/r2nq1p1/p3p2p/2p1P3/2Bp1P2/Q7/PP4PP/2R2RK1 b - - 1 23 | Nb6 | What is the material balance in this position? | Equal | material |
r2qkb1r/5ppp/pn1pp3/1p4P1/3N1P2/P3B3/1PP3QP/2KR3R b kq - 0 4 | Rc8 | Are there any open files in this position? | No | files |
4qrk1/1R2npp1/4b2p/b2p4/2pP2P1/p1P2QB1/P1B2PP1/5NK1 b - - 1 26 | Nc8 | Identify any White knight outposts on the board. | None | outposts |
3rr1k1/ppp1b1pp/2pn1p2/P4b2/1N1P1B2/2PN4/1P3PPP/R3R1K1 b - - 0 21 | Nb5 | Identify any White knight outposts on the board. | None | outposts |
r3rbk1/1bn2p1n/pQ4p1/1p1Ppq1p/2p1NP1B/P1N2B1P/1P4P1/3RR1K1 b - - 5 24 | Qc8 | Identify any Black knight outposts on the board. | d3, d4 | outposts |
r4knr/pp3ppb/2q1p3/3pP1BN/6PP/2b2Q2/PPP2P2/R4RK1 w - - 0 16 | bxc3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5k2/p2n1p2/5n2/2p3R1/P2pPB2/1B1P1P2/8/r5K1 w - - 3 33 | a2a1 | Is the White king in check? | Yes | check |
r7/3R2p1/r3ppk1/2b1P2P/P4P2/2P2N2/2K5/R7 b - - 0 36 | Kf5 | Is the White king in check? | No | check |
r1bqkb1r/5pp1/p2ppn1p/4n3/Np1NP1P1/4BP2/PPPQ3P/2KR1B1R w kq - 4 12 | Qxb4 | Is the White king in check? | No | check |
4r3/5Qp1/p3qbPp/1p6/1B2p1k1/PP6/2P5/2K3R1 b - - 4 38 | Kh3 | Is the White king in check? | No | check |
r4rk1/pbq1bppp/4pn2/2p5/7Q/3B1N2/PPP2PPP/R1B2RK1 w - - 0 15 | Bf4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
2k5/1p6/p1p5/P1PbP1B1/5KP1/5P1r/3Q2R1/7q w - - 3 49 | Rg3 | What is the material balance in this position? | White is up 2 pawns of material | material |
3b4/4n2p/3P2k1/6p1/3QP1q1/2B5/5P1P/5K2 b - - 4 48 | Kh5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
2bn2k1/pp2r1p1/3p1p1p/3Pp3/8/4P3/PP1NBPPP/2R3K1 b - - 1 21 | Bd7 | Identify any Black knight outposts on the board. | None | outposts |
2Q2b1r/p2Rkpp1/1p6/4p2p/2P4P/5qB1/PP2NP2/2K3R1 b - - 0 26 | d1d7 | Is the Black king in check? | Yes | check |
8/6pk/7p/8/1bQB3P/p1p3P1/5P1K/1q6 w - - 0 59 | Qc7 | Is the d-file open, semi-open, or closed? | open | files |
8/p6p/1p1p1k2/2pP2p1/2P1b1P1/P1P1K2P/8/5B2 b - - 3 44 | Ke5 | Is the move from h7 to h6 legal? | Yes | legality |
r4rk1/pb1pqppp/1p6/n1p5/2P1n3/PP1QP1N1/1B3PPP/R3KB1R b KQ - 6 15 | f5 | Does Black have any isolated pawns? | No | structure |
r1bq1rk1/pp2bppp/2n1p3/3n4/3P4/P1NB1N2/1P3PPP/R1BQ1RK1 b - - 0 10 | Nf6 | Identify any Black knight outposts on the board. | d5 | outposts |
r4rk1/p1q1n3/1p1NQ1pp/2p2p2/2P5/6P1/P2RPPbP/5RK1 b - - 1 22 | e5e6 | Is the Black king in check? | Yes | check |
rnb1kb1r/6p1/2p1Np2/p2p1P1p/1p6/3BBN2/PPP2PPP/R3K2R b KQkq - 1 14 | c5e6 | What is the material balance in this position? | White is up 3 pawns of material | material |
rnb3nq/3k1Q2/pB2p3/1p1pP1p1/3P1pP1/P4N2/1PP2P2/2KR1B2 b - - 4 21 | g6f7 | Is the White king in check? | No | check |
3q1r2/3bp2k/3pB1p1/pprN3P/3N4/3Q2n1/PPP5/2K4R b - - 0 25 | Nf5 | Is the move from f8 to e8 legal? | Yes | legality |
rq2rk2/7Q/p2p2p1/3PbbP1/1p5R/8/PPP4P/2K2R2 w - - 2 27 | Qxg6 | What piece is on b4? | Black Pawn | occupancy |
1r3r1k/2q4p/p1b1Bp1Q/1p2pN2/8/P1P5/1P3PPP/3RR1K1 w - - 4 9 | Rd7 | Are there any open files in this position? | Yes: d | files |
5rr1/1p1P4/p6k/2P5/P6Q/1P3p2/2P4P/5K2 b - - 4 38 | Kg6 | What is the material balance in this position? | White is up 2 pawns of material | material |
4kb1r/3bn3/8/7P/1Q3N1p/8/8/1NB1KB1R b Kk - 0 22 | Nc6 | Is the move from e7 to c6 legal? | Yes | legality |
1r2qr1k/7p/3np3/1p3p2/PQ6/8/1PP5/1K4RR w - - 0 29 | Rxh7+ | Is the move from g1 to g2 legal? | Yes | legality |
6k1/R6p/2p2B2/6p1/2n5/6P1/1P2rPKP/8 b - - 0 29 | g4 | Is the White king in check? | No | check |
4q1k1/rp1rBbp1/n2P3p/5p2/Q3pN2/4P2P/5PP1/2RR2K1 b - - 1 31 | b5 | Does Black have any passed pawns? | Yes: b7 | structure |
5rk1/bp4p1/p2r2np/2pP4/P1P5/1R2B2P/1n3PPN/5R1K w - - 0 30 | Rxb2 | Identify any Black knight outposts on the board. | None | outposts |
7k/1r6/p3Rp1p/1p3P2/3r4/8/P1P3PP/5R1K b - - 1 31 | Kg7 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
6k1/2n2pp1/p4b1p/1np5/Qp6/1N1NPP2/PP2K1PP/1q2B3 w - - 15 34 | Nbxc5 | Is the move from d3 to f4 legal? | Yes | legality |
r2qkb1r/ppp2ppp/2n5/8/6b1/3P1NB1/PPPQB1nP/RN2K2R w KQkq - 0 10 | e3g2 | Is the Black king in check? | No | check |
2k2bnr/1p2pppp/p1n5/1Np2q2/Q1P5/5NB1/PP3PPP/3R2K1 b - - 0 15 | Nf6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbq1k1r/pp2ppbp/6p1/1B2P3/3N2n1/2N5/PPP3PP/R1BQK2R w KQ - 3 10 | Ne6+ | Identify any White knight outposts on the board. | None | outposts |
r2q1rk1/ppp2ppp/2n1b3/3n4/7b/2N1BQ2/PPP2PPP/2KR1BNR b - - 5 11 | Nxc3 | What piece is on h2? | White Pawn | occupancy |
r2r2k1/pp3pp1/2q1bn1p/3pp3/8/1B1PBQ1P/PPP2PP1/2R2RK1 w - - 0 18 | Bxh6 | Is the move from g2 to d2 legal? | No | legality |
rnbq1rk1/ppp1ppbp/6p1/3n4/3P4/2N1PN2/PP3PPP/R1BQKB1R w KQ - 0 7 | Bc4 | Identify any White knight outposts on the board. | None | outposts |
rn1qkb1r/pp2pppp/2p1bn2/8/4P3/5NPP/PPPN1PB1/R1BQK2R b KQkq - 2 8 | g6 | Is the Black king in check? | No | check |
r2r2k1/pb4pp/1p1b4/8/8/1P3P2/PB4PP/3RRN1K b - - 2 24 | Bb4 | Is the Black king in check? | No | check |
8/p5p1/2Pk3p/4p3/P2b1rP1/8/5PB1/3RK3 w - - 3 43 | Rc1 | Is the Black king in check? | No | check |
2kr3r/pp4pp/2pn1p2/5b2/PP6/2N3P1/4PPBP/R1R3K1 b - - 0 18 | Rhe8 | Are there any open files in this position? | Yes: d | files |
r1bq1rk1/pp2b1pp/4p1n1/2ppP3/5P2/2PB1N2/PP4PP/R1BQ1RK1 w - - 1 15 | Qc2 | Is the move from d1 to b3 legal? | Yes | legality |
3rk2r/pQ3p2/2p1p1n1/q1PP2pp/N2b1pb1/P1NB2P1/6P1/RR3K2 w - - 7 27 | Bxg6 | Identify any White knight outposts on the board. | c6 | outposts |
rnbq1r1k/pppp1p1p/3n1Pp1/6N1/2B2Q2/8/PB3PPP/R4K1R w - - 0 1 | Nxf7+ | Is the c-file open, semi-open, or closed? | semi-open for White | files |
1rb4r/3pkppp/p1p1p3/8/4Pn2/2N2B2/PPPR1PPP/2KR4 b - - 6 15 | e5 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r2q2k1/3b3p/pn1n1bpB/3P4/pP2B3/5R1P/4QPP1/4R1K1 w - - 4 26 | g4 | Is the move from h3 to h4 legal? | Yes | legality |
r3q3/1Rrn2p1/p1k1p1p1/3n1pP1/2pP1P2/4P2P/R5B1/1Q4K1 w - - 0 38 | Rxa6+ | What is the material balance in this position? | Black is up 4 pawns of material | material |
6k1/p5b1/1p1p1pQ1/5p1P/2P2P2/3n1NP1/4qBK1/8 w - - 1 34 | Ng5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkbnr/ppp2p1p/3p4/4N3/4PppP/8/PPPP2P1/RNBQKB1R w KQkq - 0 6 | Nxf7 | Does Black have any isolated pawns? | No | structure |
8/3Qr1kp/p5p1/5nP1/1P5P/8/8/6K1 w - - 3 45 | Qc6 | What piece is on h1? | Empty | occupancy |
r2qk2r/pp1nbppp/2p1bn2/3p4/3P1B2/2N1PN1P/PPQ2PP1/R3KB1R b KQkq - 2 11 | Ne4 | Is the White king in check? | No | check |
2rr2k1/1pq2ppp/p1bppn2/8/2PNP3/1P3Q2/P2R1PPP/1B2R1K1 b - - 2 19 | Nd7 | Identify any White knight outposts on the board. | None | outposts |
1r6/p2Q3k/n2P2q1/1pp1p3/8/6P1/P5KP/4R3 b - - 0 27 | Kg8 | Are there any open files in this position? | Yes: f | files |
1rbq1rk1/4bppp/p2p4/1p1N1P1P/n1n1P3/PB2BP2/1PPQ4/1K1R3R w - - 1 20 | Bxc4 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
3q2k1/1p3p2/2p1b3/4p1p1/p1P1P1P1/1P3P1p/P3Q2P/3N3K b - - 0 37 | Qd4 | Is the move from e6 to c8 legal? | Yes | legality |
1r1r4/1b3pk1/1p3Nqp/p1p5/5Q2/P7/1P4PP/4RR1K w - - 0 29 | Rf2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1q1k2r/4bpp1/n1p1pnp1/1p6/3P4/p1N1P3/PP1BBPPP/1KRQ3R w kq - 0 16 | b3 | Does Black have any isolated pawns? | No | structure |
2r5/5kpp/5p2/3Pp3/1P4P1/P1K1R2P/8/8 w - - 3 32 | b8c8 | Is the White king in check? | Yes | check |
b4rk1/5ppp/4pn2/5q2/1BP1p3/1B3PQ1/Nb4PP/1R5K w - - 1 32 | Bxf8 | Identify any White knight outposts on the board. | b5 | outposts |
4rnk1/pp2b1P1/4p3/1q1pP2p/3P1PR1/4BN2/1rQ5/6RK b - - 0 30 | hxg4 | Is the White king in check? | No | check |
2r3k1/5pp1/1p2pn2/3p4/2RP3Q/1p3P2/P5PP/6K1 b - - 0 31 | dxc4 | Identify any Black knight outposts on the board. | a5, d5 | outposts |
7K/7p/p1p5/6R1/2k1p1P1/4P2P/P1P3r1/8 b - - 0 39 | Rg3 | Is the move from a6 to c5 legal? | No | legality |
3r3r/pbkp3p/n1pN1Q2/1p6/1P2P1q1/P1N3P1/2P3BP/3R1RK1 w - - 1 24 | g6g4 | What is the material balance in this position? | White is up 4 pawns of material | material |
5rk1/1p4pp/p3p3/3p4/1P2n3/P3P3/2B2PPP/5RK1 b - - 0 24 | Nd6 | What piece is on e2? | Empty | occupancy |
r4rk1/p1p2ppp/1bp1b3/3n2B1/1qNP4/5N2/PP3PPP/2RQR1K1 b - - 1 14 | c5 | Identify any Black knight outposts on the board. | d5 | outposts |
r3k2r/1pqb1pp1/pn1Rp3/6P1/1P2P2P/2NQ4/P1P5/2K2B1R b kq - 0 18 | Rc8 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnbqkb1r/ppp1p1pp/5p1n/3p4/3P3B/5P2/PPP1P1PP/RN1QKBNR b KQkq - 0 4 | Nf5 | Is the White king in check? | No | check |
r2r1k2/pp3ppQ/4pbnp/q2nN3/1P1P4/P5N1/5PPP/R1B1R1K1 b - - 0 22 | Qc7 | Does Black have any isolated pawns? | No | structure |
8/4Rpk1/6p1/3p4/1p1P2b1/4P1P1/5PK1/8 w - - 0 49 | Rb7 | Does Black have any isolated pawns? | Yes: b4, d5 | structure |
r1bqkbnr/pp1npppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 4 | a4 | Are there any open files in this position? | No | files |
r4rk1/pn3p2/1p4q1/2p3Q1/2P2p1p/P1P5/5PPP/2N1RRK1 w - - 1 25 | Qxh4 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
2bk1br1/5p1p/2np4/1N1Npp2/rP2PP1q/8/P1P3PP/R2Q1RK1 w - - 1 16 | Nb6 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r2qk2r/ppp3pp/1bnp1n2/5b2/2BP1P2/2N2N2/PP4PP/R1BQ1RK1 b kq - 6 10 | d5 | What piece is on g2? | White Pawn | occupancy |
8/2Pk4/2PP4/1K6/7p/3R2rP/8/8 b - - 0 57 | c5c6 | Is the Black king in check? | Yes | check |
r5k1/2qb4/p5pB/4p3/P2n3R/1p6/1P4PN/RB5K b - - 1 33 | Nc2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3r2k1/3rbpp1/pp2b2p/1q1p3Q/8/P1BRP1P1/1P1R1PBP/6K1 w - - 0 29 | h3 | Identify any White knight outposts on the board. | d4 | outposts |
4K3/4P2k/8/8/8/8/r7/3R4 b - - 1 1 | Kg7 | Is the move from a2 to a6 legal? | Yes | legality |
5r1k/2p1r1bp/ppq1P3/2pb2Np/P2p4/1P1P1N1Q/2P1R1P1/4R1K1 b - - 0 37 | Bxf3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
2k3r1/p4p1p/3bpp2/3P4/8/5B2/3B1PNP/q4RK1 b - - 1 26 | Bxh2+ | Is the move from d6 to f8 legal? | Yes | legality |
2rqrbk1/5pp1/p1n2n1p/1p6/1P1pP3/P3BN1P/Q2N1PP1/3RR1K1 w - - 0 25 | Bf4 | Does Black have any passed pawns? | Yes: d4 | structure |
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