fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1b2rk1/4bppp/p2p1n2/4p3/RPB1P3/2N1QN1q/1BP2P2/R5K1 b - - 1 18 | Ng4 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/pp6/2p1K3/8/1P1P4/2k5/P7/8 b - - 0 41 | Kxb4 | Identify any Black knight outposts on the board. | d5 | outposts |
r1bqk2r/p2p1ppp/2p2n2/8/3QPB2/2b5/PPP3PP/R3KB1R w KQkq - 0 10 | b4c3 | Is the Black king in check? | No | check |
r1bq2k1/pp1n3p/3p2p1/P1pP1r2/2N2P2/2Q1B3/1P4PP/R4RK1 b - - 0 20 | Nf6 | What is the material balance in this position? | Equal | material |
7k/1pp4p/2r2p1P/p2P4/P3P1K1/1P3p2/1BP4R/5r2 b - - 0 39 | Rd6 | Identify any White knight outposts on the board. | f5 | outposts |
1r2k2r/2q1npp1/pp2p2p/n1ppP2P/b2P1B2/P1PB1N2/R1P2PP1/1Q3RK1 w k - 6 16 | Re1 | Are there any open files in this position? | No | files |
rnb4r/2Nnbkpp/p7/3q4/1p2P1P1/4B3/PPP1NP1P/R3K2R w KQ - 0 16 | exd5 | Identify any Black knight outposts on the board. | None | outposts |
r1bqkb1r/pppp1ppp/2n2n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5 | Nxc6 | Is the move from a2 to a3 legal? | Yes | legality |
r4rk1/ppp1qppp/2nb4/4pb2/8/1PBPPN2/P3BPPP/R2Q1RK1 b - - 4 11 | Rad8 | Is the Black king in check? | No | check |
3qr1k1/3n2pp/b3pn2/p7/Pp1BP3/1B3PQ1/N5PP/2R3K1 w - - 2 29 | Rc6 | Identify any Black knight outposts on the board. | a3, c3 | outposts |
rnbqk2r/ppp1ppbp/6p1/3pP3/3PN1P1/8/PPP1BP1P/R1BQK1NR b KQkq - 0 7 | dxe4 | Is the f-file open, semi-open, or closed? | closed | files |
1k4r1/6qp/p3pp2/2b2p2/Ppp1b2Q/5N1P/1P3PP1/2R1R2K w - - 6 28 | Rg1 | Is the move from h4 to f6 legal? | Yes | legality |
8/pppk4/3b1p2/1q3Pp1/3Pp2p/1P5P/P1K2QP1/2N5 b - - 3 39 | Bf4 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/8/4p3/5p2/2pP1Pp1/p1P2kP1/P7/BK6 w - - 0 61 | Bb2 | Is the move from a1 to g7 legal? | No | legality |
r3k3/2b3p1/2pqp3/P2p4/3PnPPr/4B3/2Q3B1/R4RK1 w q - 1 28 | a6 | Is the move from g4 to f6 legal? | No | legality |
3r2k1/1p3pPp/8/2p1p1PQ/p1N1q3/P7/7R/K7 b - - 1 40 | Rd3 | Does White have any passed pawns? | Yes: g7 | structure |
8/8/PN6/7p/1k5P/6P1/5K2/8 b - - 0 38 | a5a6 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/4kppp/2bRp3/4P3/1rN2PPP/1P6/PKP1n3/8 b - - 4 30 | Bf3 | What piece is on c4? | White Knight | occupancy |
r4r2/p4Q1p/1ppkp3/8/3P4/2N5/PPP2P1P/R4RK1 w - - 3 16 | h8f8 | What is the material balance in this position? | White is up 13 pawns of material | material |
r2qkbnr/ppp2ppp/3p4/7Q/2n1P3/2N4P/PPPP1PP1/R1B1K2R w KQkq - 0 8 | Qb5+ | Identify any White knight outposts on the board. | None | outposts |
6bk/5p2/5K2/6P1/5B2/3p4/8/8 w - - 1 5 | Be5 | Is the move from f6 to e6 legal? | No | legality |
r3r1n1/q4ppk/1bp1b2p/2p2N2/2PpP2N/1P1P3P/2RBQ1P1/1R4K1 b - - 1 28 | Qb8 | Are there any open files in this position? | Yes: a | files |
rn2k2r/ppp2ppp/8/3p4/3P1P2/5q1P/P2B3P/Q2K1B1R w kq - 1 14 | f2f3 | Is the White king in check? | Yes | check |
4k3/8/5K2/4P3/8/8/8/8 b - - 2 2 | Kf8 | Are there any open files in this position? | Yes: a, b, c, d, f, g, h | files |
8/k7/p7/2PNb3/KP6/8/P7/8 w - - 5 59 | Ka5 | What is the material balance in this position? | White is up 2 pawns of material | material |
5qrk/5p1p/1b1p1nr1/1p2p3/4P3/P2R4/1P2RNPP/5BQK b - - 0 34 | Ng4 | Is the White king in check? | No | check |
1r4k1/3b1pPp/p3pP2/2n1P3/1r1p2P1/1PN4R/2P5/1K1R1B2 b - - 0 25 | Bc6 | Identify any Black knight outposts on the board. | e3 | outposts |
7R/5p2/4k3/1R6/3Pp1p1/4N1P1/5PKP/r7 w - - 1 37 | d6e6 | What is the material balance in this position? | White is up 9 pawns of material | material |
r1b1kb1r/pp2Qp1p/2n2pp1/3p4/8/2NP1N2/PPP2PPP/R3KB1R b KQkq - 0 9 | e2e7 | Is the Black king in check? | Yes | check |
r1bq1rk1/pp1n1ppB/2n1p3/3pP3/3P4/P1P2N2/5PPP/R1BQ1RK1 b - - 0 1 | Kh8 | Does White have any isolated pawns? | Yes: a3 | structure |
8/6p1/5k1p/K7/p7/P5r1/1P6/8 w - - 0 50 | g4g3 | What is the material balance in this position? | Black is up 6 pawns of material | material |
r1bq1rk1/7p/p2p4/nppPn3/2P2p2/1P4P1/PQ1NB2P/R2N1RK1 w - - 0 20 | Rxf4 | Does Black have any isolated pawns? | Yes: f4, h7 | structure |
1k5r/pp2bppp/2p1pN2/8/Q7/8/PPP4P/1K1q4 w - - 0 21 | f3d1 | Is the White king in check? | Yes | check |
2kr1b1r/pp3p2/2n2n1p/q5p1/2B5/2N1P1Bb/PP1Q1PPP/R3K1NR w KQ - 3 14 | Qxd8+ | Is the move from d2 to e2 legal? | Yes | legality |
8/R4p2/1p2k1pp/8/3r4/8/PP3PPP/6K1 w - - 0 28 | g3 | Is the Black king in check? | No | check |
r1bq1rk1/p4pbp/2p1p1p1/3pP3/N7/4B3/PPPQB1PP/R3K2R b KQ - 0 13 | Qh4+ | Does White have any isolated pawns? | Yes: e5 | structure |
1Qr4k/1p3pp1/5r2/7P/8/P6q/1P4B1/3N1RK1 b - - 4 37 | Rxf1+ | Identify any White knight outposts on the board. | b4 | outposts |
4k3/p6R/5p2/1P3N2/4p1P1/r3P3/6K1/3r4 b - - 4 52 | Rd7 | Is the move from d1 to d3 legal? | Yes | legality |
r1bq1rk1/pp1p1ppp/3p3n/3Q2N1/2B1R3/8/PP3PPP/R5K1 w - - 1 16 | Rae1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2q1rk1/pbpn1ppp/1p1bp3/3p4/2PPn3/1P1BPN2/PB1N1PPP/R2Q1RK1 w - - 1 10 | Rc1 | Are there any open files in this position? | No | files |
1qkr1b1r/pp3ppp/5P2/1Np1n3/3B1P2/P7/1PP1B2P/R2QK2R b KQ - 0 16 | Nc6 | What is the material balance in this position? | White is up 3 pawns of material | material |
8/8/3Q4/8/5N1P/k4BP1/5PK1/8 b - - 21 66 | d5d6 | Is the White king in check? | No | check |
1r2r1k1/2qbb2p/p3p1p1/1p1np3/P3B3/5N2/1PP1Q1PP/R4RBK b - - 1 22 | Nf4 | Does Black have any isolated pawns? | Yes: e5, e6 | structure |
r2q1rk1/pp1b2pp/2n1p2n/2RpP3/1P4P1/P4N2/1B3P1P/3QKBR1 b - - 0 17 | b6 | Is the Black king in check? | No | check |
r6r/p3R2p/1p3Nk1/n1p2ppN/3n4/B2B1p2/P1P2KbP/R7 w - - 0 24 | Rg7+ | Does Black have any isolated pawns? | No | structure |
r1bq1k1Q/pppp2p1/2n2rP1/4pp2/2P1P3/P2P4/P4PP1/R1B1KB1R b KQ - 2 13 | h7h8 | Is the Black king in check? | Yes | check |
8/8/8/6p1/4k1P1/4P3/5K2/8 w - - 3 67 | Ke2 | Identify any Black knight outposts on the board. | None | outposts |
5k2/3K4/2p5/p1p1PP2/P1P4b/8/8/8 b - - 0 53 | Bg3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1b1kb1r/pp2pppp/2n2n2/3P2B1/3P4/2N5/Pq3PPP/2RQKBNR b Kkq - 1 8 | Nb4 | Is the White king in check? | No | check |
rnb1k2r/p2pppbp/2p2np1/1p6/3PP3/qBN1BN2/P1PQ1PPP/1R2K2R b Kkq - 1 9 | b4 | Does White have any passed pawns? | No | structure |
r4nk1/1p1rqb2/2p2p2/P2p1Ppp/3P4/1RNBPQ1P/5KP1/1R6 w - - 1 32 | Na4 | Does White have any isolated pawns? | Yes: a5 | structure |
8/5p2/5kp1/6p1/2N1Pn2/5P1P/4r1PK/3R4 w - - 5 59 | Rd6+ | Is the White king in check? | No | check |
r2qrk2/p1p2b1Q/1pn3n1/3pP1N1/3P4/2PB4/P1P3PP/1R4K1 w - - 2 18 | Qxf7# | What piece is on c7? | Black Pawn | occupancy |
4qr2/p6p/3p1pk1/1pp5/5Q1R/8/PPP4K/8 w - - 9 48 | Qg4+ | Is the move from f4 to g1 legal? | No | legality |
r1br2k1/ppp2pbp/5np1/4n3/2P5/1P2P3/PB2BPPP/RN3RK1 w - - 0 12 | Bxe5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r5k1/5p2/p5p1/2PR2Pp/1N5b/5P2/PP6/1K6 b - - 0 33 | Bg3 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r3rk1/3nnppp/3b1q2/RPp5/2B5/4PN2/1P1P1PPP/2BQK2R w K - 3 16 | e8g8 | What is the material balance in this position? | White is up 3 pawns of material | material |
5RR1/4q3/3p1PPp/p3p1k1/3p3b/8/2r5/6K1 b - - 0 46 | f5f6 | What is the material balance in this position? | Black is up 10 pawns of material | material |
2krr3/pp1n1p1p/2p3p1/3q4/4N3/1NPP1Pbb/PP2Q2P/R3K1R1 w Q - 0 20 | h4g3 | Is the White king in check? | Yes | check |
1rbq1rk1/p4nb1/3p2P1/1NpP3n/5P2/4B3/PP1QBNKP/R4R2 b - - 0 20 | Nh6 | What piece is on f6? | Empty | occupancy |
r2q1rk1/pppn1pp1/2n4p/2p1p3/2P1P3/3PBBPP/PP3P2/R2Q1RK1 b - - 0 13 | Nd4 | Are there any open files in this position? | No | files |
2r3k1/3b1ppp/p3p3/3pPPP1/N6P/7R/P7/KQ1q1B2 b - - 1 24 | Rc1 | Is the move from c8 to a2 legal? | No | legality |
8/pp2kp1p/4pn2/3P1P2/8/8/PPqn3P/K1B3Q1 b - - 0 30 | d4d5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r2q4/pbp1b2p/2n1k1p1/1B1nPr2/3P2Q1/2P5/PP4PP/RNB1K2R w KQ - 3 15 | Rf1 | Is the move from g4 to h7 legal? | No | legality |
3r1k1r/R4R2/4pnp1/1N5p/6n1/2N1P3/1PK3P1/2B5 b - - 3 26 | e7f7 | Is the White king in check? | No | check |
4Rbk1/4Qpqp/3p4/3P2p1/8/PP3P2/KP6/8 w - - 3 33 | a4 | Identify any White knight outposts on the board. | a4, b4 | outposts |
2r3k1/p4pp1/1pr1p1p1/PRPn4/3P4/5PB1/5PKP/2R5 b - - 0 30 | g5 | What piece is on b5? | White Rook | occupancy |
8/R4pkp/6pq/3rb3/2N2pQ1/2P5/1P3P1P/6K1 w - - 0 31 | h4 | Does White have any passed pawns? | Yes: b2, c3 | structure |
8/1R5p/4k1p1/5p2/3nPb2/N4P2/r5PP/3N1K2 w - - 0 34 | Nb5 | Identify any White knight outposts on the board. | d5 | outposts |
1r4k1/3p2p1/7p/8/p1N1R3/Rb5P/1P3PP1/6K1 w - - 5 36 | Nd6 | Identify any Black knight outposts on the board. | b3 | outposts |
1r3rk1/4ppb1/6p1/1p5p/1Q5P/PP3P2/4K1P1/7R b - - 0 29 | Rfc8 | Are there any open files in this position? | Yes: c, d | files |
2kr1b1r/1ppqpppp/p1n5/3n1b2/3P4/P1N2NB1/1PP1BPPP/R2QK2R b KQ - 1 11 | Nf6 | What piece is on g5? | Empty | occupancy |
1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 23 | Rad1 | What piece is on b8? | Black Rook | occupancy |
rnb4k/pppp1q1p/5P2/8/5Q2/8/PB3PPP/R4K1R w - - 0 5 | Re1 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r1b2rk1/ppp2p2/3b1q1p/2p1p1p1/4P3/3P1NB1/PPP2PPP/R2Q1RK1 b - - 1 12 | Bg4 | Is the move from g8 to g7 legal? | Yes | legality |
r5k1/p4pp1/2Nr3p/PP1pR2b/5P2/6P1/7P/2R3K1 b - - 1 39 | Bf3 | Identify any White knight outposts on the board. | a6, c6 | outposts |
8/4r2k/6p1/1Pp1b3/2PpN2P/8/4PPB1/6K1 w - - 0 39 | Nxc5 | What is the material balance in this position? | Equal | material |
5rk1/pbq2p1p/3bp1p1/2p1N3/5R2/1PPB3Q/P5PP/4R1K1 b - - 0 24 | Bxe5 | Identify any White knight outposts on the board. | a4, c4 | outposts |
r1bqkb1r/3pnpp1/p1n1p2p/1p6/2B1P3/2N1BN2/PP3PPP/R2Q1RK1 w Qkq - 0 1 | Bd5 | Is the move from d1 to d7 legal? | Yes | legality |
rn2k2r/pp2p3/2p1q1b1/3p3p/5BnP/2NB4/PPP3P1/R2Q1RK1 w - - 8 16 | Qe2 | Does White have any passed pawns? | No | structure |
2r5/1p2npk1/1q2p1p1/p2pP1Pp/2rN1P2/P1PR3Q/1P2R1KP/8 b - - 1 30 | Nf5 | Is the move from c4 to b4 legal? | Yes | legality |
1r6/p1p3k1/6p1/4b1p1/5p2/1BP4P/PP3PP1/1R1r2K1 w - - 0 24 | d2d1 | Is the White king in check? | Yes | check |
8/5p2/2p1bk1p/p7/P1p5/2P4P/2B2PP1/1r3K2 w - - 0 32 | Bxb1 | What is the material balance in this position? | Black is up 5 pawns of material | material |
2b1k3/8/p3pPP1/3p4/1P1R4/2r5/1K6/8 b - - 1 41 | Rc4 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
5r2/1pRrk2p/3p1q2/1Q1P2p1/5Bn1/8/PPP3PP/2K2R2 w - - 7 27 | Qxd7# | Is the e-file open, semi-open, or closed? | open | files |
4rnk1/pp1qb1pp/4p3/3pPp2/P1rP1PP1/3QBN2/1P5P/R5RK w - - 5 23 | Rg2 | Is the move from g1 to g3 legal? | Yes | legality |
r2qr1k1/p4pbp/bp4p1/3p4/8/BPN1n1P1/P1Q1N1BP/R2R2K1 w - - 0 18 | Qd2 | Is the move from g2 to d8 legal? | No | legality |
5K2/3k1P2/8/8/4R3/8/6r1/8 b - - 1 153 | Ra2 | Are there any open files in this position? | Yes: a, b, c, d, e, g, h | files |
r1q2rk1/p4pp1/2p1b2p/3p4/N2P3b/P4Q1P/1P2RPP1/R1B3K1 b - - 0 21 | Be7 | Is the move from f8 to d1 legal? | No | legality |
7k/pp4rp/5Q2/5b2/8/8/PP1q1PP1/5RK1 w - - 1 8 | Qxf5 | Is the move from f6 to h6 legal? | Yes | legality |
r2qk2r/pb1pbppp/1pn1pn2/6B1/3P4/2PB1N2/PP1N1PPP/R2QK2R w KQkq - 1 9 | Nc4 | What piece is on b4? | Empty | occupancy |
r2q1Rk1/3n3p/pp1p2p1/1Pp5/2Pb4/P2PN3/4Q1PP/1RB3K1 b - - 0 21 | f1f8 | Is the Black king in check? | Yes | check |
r4rk1/1bqnbppp/p1pp4/4pP2/N1P1P3/1P1B1R2/P5PP/R1BQ3K b - - 2 15 | d5 | Are there any open files in this position? | No | files |
2q2k2/2b3pp/1p3p2/p1pQpP2/P3P3/1PPKN3/6PP/8 w - - 11 8 | Qc6 | Identify any Black knight outposts on the board. | None | outposts |
r1b1kb1r/2q2p2/p2ppP2/1pn4p/3NP3/2N2Q2/PPP4P/2KR1BR1 w kq - 0 17 | Re1 | What is the material balance in this position? | Equal | material |
1r3rk1/5p2/p2Rbq1p/4pN1P/1P2P1B1/8/1PP2B2/2KR4 b - - 0 25 | Rxb4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1r3rk1/4bppp/2n5/1p2p1P1/p3N1R1/2P1P3/PP1NK2P/5R2 b - - 3 19 | Na5 | Is the move from f8 to e8 legal? | Yes | legality |
8/3q4/6Qp/8/5Pp1/4P2k/5P2/4K3 w - - 2 74 | Qe4 | Is the move from f4 to e4 legal? | No | legality |
r1bqk2r/p2n1pbp/2p1p3/8/2pP4/5NP1/Pp3PBP/R1BQ1RK1 w kq - 0 12 | Bxb2 | Is the move from g2 to h3 legal? | Yes | legality |
8/5bpk/5p1p/2B1n3/1Q6/1p1P2P1/3KP1qP/2R5 w - - 4 47 | Qe4+ | What piece is on b3? | Black Pawn | occupancy |
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