fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
7r/6p1/4p3/2b1R3/1pkpKP2/p1p4P/2P5/7R b - - 3 53 | a2 | Does White have any passed pawns? | No | structure |
2Q2bk1/1p5r/p2p4/P2Pp1q1/2N1P3/2R3p1/1P6/5K2 b - - 0 39 | g2+ | Identify any Black knight outposts on the board. | None | outposts |
2n2r1k/7p/3p1pp1/pP1PpP2/Pb2P1P1/3P1B1P/2R5/7K w - - 1 38 | e7c8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b2rk1/pppnn1pp/3q4/3Ppp2/2P1P3/2N2P2/P2B2PP/R2QKB1R b KQ - 1 13 | Qg6 | Is the move from d7 to h7 legal? | No | legality |
r1bqkb1r/pp1p1ppp/2n1p1n1/8/2B1P3/2N2N2/PP3PPP/R1BQR1K1 b kq - 7 8 | Qc7 | Does Black have any passed pawns? | No | structure |
rnbqkb1r/pp3ppp/2p1pn2/3p4/2PP4/2NBP3/PP3PPP/R1BQK1NR b KQkq - 2 5 | dxc4 | What piece is on d8? | Black Queen | occupancy |
r1bq1rk1/pp2ppbp/1nnp2p1/8/2PP4/1PNBB3/P3NPPP/R2QK2R b KQ - 2 10 | d5 | Is the move from g7 to f6 legal? | Yes | legality |
k1b3r1/1p2nrp1/p3p2p/n2pPP1P/P1pP1P2/2P1BBN1/2PK4/1R4R1 b - - 0 26 | exf5 | Is the move from d5 to d2 legal? | No | legality |
2r1k3/1Q6/p3p3/4p3/6p1/1PP5/1P2q1PP/2K2R2 b - - 2 42 | Qxf1+ | What piece is on a2? | Empty | occupancy |
r1bqk2r/1ppnbppp/p1p5/4p3/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 2 8 | d4 | Are there any open files in this position? | No | files |
r1bq1rk1/p3ppbp/1pn2np1/2pp2B1/3P4/2PBPN2/PP1N1PPP/R2Q1RK1 w - - 0 9 | h3 | Identify any Black knight outposts on the board. | None | outposts |
2r3k1/r3qpp1/p3bn1p/2pp4/8/QN2P3/PP2BPPP/2R2RK1 b - - 3 19 | Rac7 | What piece is on f1? | White Rook | occupancy |
7r/5k2/2p2p1P/3p3K/3P4/4P3/5P2/6R1 w - - 5 75 | Rg7+ | Identify any White knight outposts on the board. | f4 | outposts |
2rq1rk1/pp1bnpbp/2n1p1p1/3pP3/3P1B2/2N2NP1/PP3PBP/R2QR1K1 b - - 4 13 | Na5 | Are there any open files in this position? | Yes: c | files |
3r3k/7r/p7/2Q3R1/3pq3/P5RP/6P1/7K b - - 1 50 | Qf4 | Does Black have any isolated pawns? | Yes: a6, d4 | structure |
5rnr/1pN3k1/p2pBqpn/3P4/2P1Pp2/8/PP4Q1/2K3RR w - - 1 24 | Bd7 | What piece is on c4? | White Pawn | occupancy |
r1r3k1/1pq1ppbp/5np1/2p5/pP2P3/3QBP2/P3B1PP/3R1R1K w - - 0 23 | Bxc5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r1b2/3bnpk1/5npp/pNp1p3/P1P5/4B1PP/4PPBN/1R4K1 b - - 2 25 | Rc8 | Does White have any isolated pawns? | Yes: a4, c4 | structure |
r1bqkb1r/1pn2p1p/2p2pp1/p7/3P3P/2PB4/PPQ1NPP1/R1B1K2R b KQkq - 0 10 | h5 | Is the e-file open, semi-open, or closed? | open | files |
rr1q1bk1/2nb2p1/3p1pNp/pppPp1nP/2P1P3/1P3NR1/P1B2PP1/R1BQ2K1 w - - 0 27 | a4 | What piece is on e8? | Empty | occupancy |
q3r1k1/p2rbppp/1p2p1n1/1NPn4/P2N4/6BP/4QPP1/2R1R1K1 w - - 2 26 | c6 | Is the move from g3 to c7 legal? | Yes | legality |
BQ6/p2k1p2/3p4/1P1N4/P7/3P4/2PKP3/R5N1 w - - 1 44 | e8d7 | What is the material balance in this position? | White is up 25 pawns of material | material |
r1bq1rk1/pppp1p2/2n2n1p/1Bb1p1p1/4P3/2PP1NB1/PP3PPP/RN1QK2R b KQ - 1 8 | d6 | Is the move from g5 to a3 legal? | No | legality |
5R2/3p2pk/4pb2/8/2P5/BP6/n6r/2K5 w - - 0 40 | c3a2 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2rr2k1/pp1nbpp1/1qp1pnbp/8/1PP1P3/PQ3NP1/1B1N1P1P/R3RBK1 w - - 3 18 | e5 | Identify any Black knight outposts on the board. | None | outposts |
r1b5/pp1nr1kp/2p3p1/2P1p3/1PB1N3/6P1/P5P1/3RR1K1 w - - 3 26 | a4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
k3r3/1p1q1p1R/p5p1/3n2P1/P1pPQ3/2P2P2/3B1K1P/8 w - - 5 35 | Qxg6 | Does White have any passed pawns? | Yes: d4 | structure |
2r1kb1r/1q1b1p1p/3ppP2/p1nN3Q/Pp1NP3/7B/1PP4P/1K2R2R b k - 0 22 | Rg8 | Is the move from h8 to c2 legal? | No | legality |
8/5pbk/pq1p3p/6p1/4Q3/P5PP/6P1/3R3K b - - 7 33 | e8e4 | Is the White king in check? | No | check |
r2r4/1p1k1ppp/p1n1p3/4P3/5P2/4N3/PP4PP/R2R1K2 b - - 0 20 | Ke7 | Is the move from f7 to c4 legal? | No | legality |
3r1rk1/p3b3/b3n1pp/p3Pp2/R2N1P2/4B1N1/1P4PP/3R2K1 b - - 0 26 | Bb4 | Does White have any passed pawns? | Yes: e5 | structure |
8/8/3R1p2/2pP2k1/6PP/2P2Q2/4nP1K/4r3 b - - 0 39 | g3h4 | Is the Black king in check? | Yes | check |
rnbq1rk1/p1p2p1p/1p2p1p1/8/4N3/3P1N2/PPP1BPPP/R2Q1RK1 w - - 0 13 | b7b6 | What is the material balance in this position? | White is up 3 pawns of material | material |
r4k2/2pn1pp1/1p1p1n1p/1P2pN2/1qPPP3/3QP2P/3N1RPK/R7 b - - 0 28 | Rxa1 | Is the move from g7 to g5 legal? | Yes | legality |
2b4r/p1pp2kp/5np1/1Q6/4P3/1PN3q1/P1PP1p2/R2K1R2 b - - 0 19 | Re8 | Identify any White knight outposts on the board. | a4 | outposts |
5b2/3p1k1p/8/6R1/1p1N1P2/1P1P1K2/7P/r7 b - - 1 37 | Bg7 | Does White have any isolated pawns? | Yes: b3, d3, f4, h2 | structure |
r4rk1/4b2p/b4pp1/2ppP3/R2p1P2/1P6/PQ4PP/6BK b - - 0 31 | fxe5 | Identify any White knight outposts on the board. | a4, d6 | outposts |
3k4/p1R2p2/N3pb2/5p1p/5P2/1r2P1PP/4K3/8 w - - 0 33 | Rxa7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4k3/3n4/3PPB2/5K2/8/1p6/8/8 w - - 1 11 | exd7+ | Does Black have any isolated pawns? | Yes: b3 | structure |
5rk1/1pp3pp/p4pQ1/P3q3/2P2P2/3r4/1P4PP/R4R1K b - - 0 28 | Qe2 | Is the Black king in check? | No | check |
3Q2k1/1p3pp1/p7/2q5/4r1b1/P1P1NrPp/1P5P/R4NK1 b - - 1 31 | d2d8 | Is the White king in check? | No | check |
r2q1b1r/pp2k1pp/2np1n2/8/2Q1P3/2N5/PPP2PPP/R1B1K2R w KQ - 3 11 | Bg5 | Does White have any passed pawns? | No | structure |
rnbqk2r/ppp2ppp/8/2bP4/4PPn1/8/PPPN2PP/R1BQKBNR w KQkq - 1 7 | Qf3 | Identify any White knight outposts on the board. | None | outposts |
2kr2nr/pp3ppp/2p1p3/8/3qP3/1QN1K3/PP3PPP/7R w - - 0 18 | c5d4 | What is the material balance in this position? | Black is up 6 pawns of material | material |
2b1r3/4k1Q1/p2p2p1/2pP1qN1/2P3p1/1Pp4P/P4P2/1R4K1 b - - 0 33 | Kd8 | Identify any White knight outposts on the board. | a4, g4 | outposts |
r3k2r/pp3ppp/2p1p3/7P/3q2P1/3B1P2/P1PB1Kb1/R2Q4 w kq - 0 21 | Kxg2 | Is the move from c2 to b2 legal? | No | legality |
rnbqkb1r/ppp2ppp/3p1n2/4p3/3PP3/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 4 | Nf3 | Is the White king in check? | No | check |
r4bk1/pppq1rpp/2p1bp2/2n1pN1Q/2N1P3/1P1P4/P1P2PPP/R1B2R1K w - - 1 14 | Be3 | Is the move from g2 to b7 legal? | No | legality |
2kr1b1r/pp2nppp/3p4/1Np5/2P3n1/1P2PNPq/PB1P3P/R2Q1RK1 w - - 1 17 | Qe2 | What piece is on c6? | Empty | occupancy |
1rk5/2p5/R1K5/b2PpN2/4P3/1P6/2R2P1P/r7 b - - 6 37 | Bb4 | What piece is on a6? | White Rook | occupancy |
r1bq1rk1/1p1nbpp1/2p1pn1p/p7/2pP1B2/2N2NP1/PPQ1PPBP/R2R2K1 w - - 0 12 | Nd2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5rn1/8/R2p2P1/2pkpK2/5p2/8/P7/8 w - - 5 52 | f6g8 | Is the Black king in check? | No | check |
r1bq1rk1/ppp1bpp1/2np1n1p/1B2p3/4P2B/2PP1N2/PP1N1PPP/R2Q1RK1 b - - 1 9 | Nh5 | What is the material balance in this position? | Equal | material |
r1bqk2r/ppppbppp/2n5/4P3/2B3n1/2p2N2/PP3PPP/RNBQ1RK1 w kq - 1 8 | Qd5 | Identify any White knight outposts on the board. | None | outposts |
r1bq1b1r/1p2pQ1p/p2k1np1/2pPn3/1PP2B2/2NB4/P4PPP/R3K2R b KQ - 0 14 | b6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r3k2r/pp1nbpp1/1qp1pn1p/3p3b/2PP1B2/1QN2NP1/PP2PPBP/2RR2K1 b kq - 1 11 | O-O | What piece is on b6? | Black Queen | occupancy |
r1bq1rk1/pp2bppp/1n2pn2/6B1/2BP4/2N2N2/PP2QPPP/R4RK1 w - - 5 11 | Bb3 | What is the material balance in this position? | Equal | material |
6k1/5pp1/7p/3B4/P7/1P2P1P1/2r2P1P/6K1 b - - 0 30 | g5 | What piece is on g3? | White Pawn | occupancy |
8/8/3kP2P/3P2p1/1pK2p2/p7/P6P/8 w - - 0 40 | h7 | Is the move from c4 to g6 legal? | No | legality |
rnbqkbnr/ppp2p1p/3p4/8/2BPPpp1/8/PPP3PP/RNBQK1NR b KQkq - 1 6 | Qh4+ | Does White have any passed pawns? | No | structure |
rnb1kbnr/ppp3pp/5p2/8/2Bq4/2N1PN2/PP3PPP/R1B1K2R w KQkq - 0 8 | d8d4 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r4rk1/1bq2pbp/p2pp1n1/5p2/1Q2PP2/1N3BR1/PPP1N1PP/R5K1 b - - 0 18 | Rab8 | Does White have any isolated pawns? | No | structure |
r1bN1rk1/ppp3pp/3pP3/8/5nK1/8/PB3bPP/RN1Q3R b - - 2 16 | Nxe6 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r2qrbk1/5p1p/p1pp2p1/n7/1p2PP2/3Q3P/PPB3P1/R1B1R2K w - - 2 20 | Rf1 | Does Black have any passed pawns? | No | structure |
r3r2k/1p4pp/2p5/4q3/4P3/p6P/R1Q3PK/5R2 w - - 0 31 | a5e5 | Is the Black king in check? | No | check |
r5rk/p1p2R2/6qp/1b1pP3/3P4/B7/P1P2R1P/4Q2K b - - 6 29 | Be2 | Is the Black king in check? | No | check |
rnbqk2r/pp3ppp/4pn2/8/2pP4/P1N3P1/1P3P1P/R1BQKB1R w KQkq - 0 10 | Bxc4 | Identify any White knight outposts on the board. | None | outposts |
r3n1k1/3b1p2/1q1p1Pp1/2pP2b1/1pP5/1P1B2B1/7Q/4RR1K w - - 0 34 | Bxg6 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
2bq2k1/Pp4bp/1Rn4r/2B1p1p1/P1P1Pp2/5P2/4B1PP/3R2K1 b - - 0 25 | Nd4 | Is the move from c6 to h6 legal? | No | legality |
1k6/5p2/B1rq1PnB/pp1p4/3P3P/6P1/1P2QP1K/8 w - - 0 41 | Bxb5 | Identify any White knight outposts on the board. | f4, h4 | outposts |
8/p1q1kppp/4pn2/1bP1N3/8/1P2QBP1/5PKP/8 w - - 3 28 | c6 | Is the move from e5 to c7 legal? | No | legality |
8/8/5kP1/2pp1P2/P7/2PK4/8/8 w - - 0 47 | b6c5 | What is the material balance in this position? | White is up 2 pawns of material | material |
2kr1b1r/1p4pp/p1np1p2/6Bn/8/2NPPN2/PP3PPP/R4RK1 w - - 0 13 | f7f6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1br2k1/p1pnqpb1/1p3npp/4p3/4P2B/2P2N2/PPQNBPPP/R3R1K1 w - - 0 13 | Bf1 | Is the move from h2 to e1 legal? | No | legality |
r1bqkb1r/1pp2ppp/p1p2n2/4N3/4P3/8/PPPP1PPP/RNBQ1RK1 b kq - 0 6 | Nxe4 | Is the move from c8 to g4 legal? | Yes | legality |
r1bq1rk1/ppp2pbp/2np1np1/4p3/P1B1P3/2NP1N1P/1PP2PP1/R1BQK2R w KQ - 0 8 | O-O | Does White have any passed pawns? | No | structure |
5b1r/4np2/Q7/3pP1qP/3Pk1p1/P3n1p1/1P4P1/3RR1K1 b - - 5 32 | Qh4 | Identify any White knight outposts on the board. | b4, d6, f6 | outposts |
6r1/p6p/8/2k2R2/8/1PP5/P3r1PP/3R2K1 b - - 7 44 | f7f5 | Is the Black king in check? | Yes | check |
2r1k1nr/4p1bp/p5p1/1ppNN3/8/4B3/PPP3PP/2KRR3 b k - 0 18 | Bxe5 | Does Black have any passed pawns? | Yes: e7 | structure |
2r1r1k1/3n1p2/p2p2p1/4q2p/1PnpP3/5B2/R4PPP/1R1QB1K1 w - - 7 28 | Rxa6 | Is the move from d1 to d2 legal? | Yes | legality |
6k1/4Q1pp/p2p2q1/3Pp1b1/p7/8/1PP5/1K1R4 w - - 0 39 | Qd7 | Are there any open files in this position? | Yes: f | files |
4k3/4P3/5K2/8/8/8/8/8 w - - 1 13 | Ke6 | Is the Black king in check? | No | check |
4r3/q4pk1/3pr2p/1pbN2pP/p3P3/P1P5/KP1Q2P1/4RR2 w - - 0 30 | Rf5 | Identify any White knight outposts on the board. | d4, d5 | outposts |
5r2/PK6/4k1p1/1B5p/3B1P1P/2P5/5P2/8 w - - 5 68 | a8=Q | Identify any White knight outposts on the board. | b4, d4, e5 | outposts |
r3r1k1/1bpqbppp/p7/1p2R3/8/PBPP1N1P/1P3P2/R1BQ2K1 b - - 0 17 | Qxh3 | What piece is on h6? | Empty | occupancy |
r3r3/ppp3pk/2n2q1p/5b2/1bQ5/2P1BN2/PP3PPP/R3K1NR b KQ - 2 17 | Re4 | Is the move from c7 to e3 legal? | No | legality |
2r4q/2pbk1p1/p1p1pr2/3pQ3/8/2NB4/PPP2PPP/R4RK1 w - - 7 21 | a8c8 | What is the material balance in this position? | White is up 3 pawns of material | material |
6k1/8/8/6pp/PN5b/5r2/1PP5/1K1R4 b - - 0 36 | g4 | Is the White king in check? | No | check |
rnbqkbnr/1p1ppppp/p7/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq - 0 3 | b5 | Is the move from e7 to e6 legal? | Yes | legality |
6k1/6pp/p3pp2/1bb5/2N5/2P1PP2/1BB3PP/3rK3 w - - 0 24 | d8d1 | Is the White king in check? | Yes | check |
k1r5/1p1N3p/2p5/pr6/3Q2B1/8/PPq3PP/K2R4 w - - 8 30 | Nb6+ | Identify any White knight outposts on the board. | None | outposts |
7r/1kpb4/1b3p2/2P2Np1/4P3/3n3P/2NBRPKP/8 b - - 0 32 | Bxc5 | Is the White king in check? | No | check |
r1bq1rk1/4bppp/2p1p3/p2pP2n/2p5/6P1/PPQ1PPBP/RNBR2K1 w - - 0 14 | g4 | Does White have any isolated pawns? | No | structure |
4rrk1/1b1q1pbp/p1pp2p1/1p6/3P1B2/1NP3QP/PP3PP1/4RRK1 b - - 2 1 | Rxe1 | What is the material balance in this position? | Equal | material |
r1bqk1nr/1p1n1pbp/p7/4pPP1/8/2B2Q2/PPP2P1P/2KR1BR1 w kq - 3 16 | Bc4 | Is the White king in check? | No | check |
8/2R1bkp1/p4p2/7p/2R3nP/6P1/1rp2PK1/8 b - - 1 50 | c1=Q | What is the material balance in this position? | Black is up 3 pawns of material | material |
r6r/2p1q1k1/p2p4/Q1nPp1p1/4PpP1/2P2P2/2P2KB1/R6R b - - 0 36 | Qd7 | Identify any Black knight outposts on the board. | None | outposts |
2r1kb1r/8/3pP3/pb1N2Qp/1p6/1P6/KPq3PP/3R3R b - - 1 26 | a4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1bqk1r1/pppp1p2/5n1p/8/2BQPp1B/8/PPP3PP/RN4K1 w q - 1 12 | Bxf6 | Are there any open files in this position? | No | files |
4rk2/3Qp3/3n3q/2pP1pN1/4pP1p/4P3/6RK/8 w - - 0 46 | Ne6+ | Is the move from g2 to g3 legal? | Yes | legality |
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