fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r4rk1/3nqpn1/1p1p2bp/p1pPp1p1/P1P1P3/2PB1PP1/3N1B1P/RQ2K2R w KQ - 3 19 | g4 | Does Black have any passed pawns? | No | structure |
r2qkb1r/pb1n1p2/2p1pn1p/1p4p1/2pPP3/2N2NB1/PPQ1BPPP/R3K2R w KQkq - 4 11 | Rd1 | Is the move from a1 to a7 legal? | No | legality |
8/1R4pk/4K2p/8/8/4r3/8/4br2 w - - 4 40 | g3e3 | Is the White king in check? | Yes | check |
6rk/1p3p2/3b3p/p4P2/P6P/1PN1RP1K/2P5/8 b - - 4 38 | h2h3 | What is the material balance in this position? | White is up 2 pawns of material | material |
5k2/8/5pK1/5P1P/7b/5B2/4n3/8 b - - 12 70 | Ng1 | Is the move from h4 to h5 legal? | No | legality |
rn1q1rk1/pb2bppp/1p2pn2/2pp4/2PP4/1P1BPN2/P1QN1PPP/R1B2RK1 b - - 1 9 | Nc6 | Identify any White knight outposts on the board. | None | outposts |
2r3k1/5ppp/pq2p3/3p2PP/1p1bbP2/3N2R1/PPPQ4/1K1R4 w - - 3 28 | Qxb4 | Does White have any passed pawns? | No | structure |
r1bqk1nr/pppnppbp/3p2p1/8/3P1B2/2N1P3/PPP2PPP/R2QKBNR w KQkq - 1 5 | Nf3 | Are there any open files in this position? | No | files |
2rk1bRr/3q1P2/p3n3/1p1NPp2/3Q4/1PP5/P7/1R2K3 w - - 2 29 | Rxh8 | Is the move from d4 to d2 legal? | Yes | legality |
8/pR6/2p3p1/6rk/7r/2P2p1K/P1P5/5R2 w - - 1 34 | f4h4 | Is the White king in check? | Yes | check |
rn1r2k1/pb3pbp/2p3p1/1p1Pp3/4P3/1B2BP2/PP4PP/R3K1NR w KQ - 2 13 | O-O-O | Is the move from e1 to e2 legal? | Yes | legality |
5r1k/pn1pp2r/1p4R1/2pq4/6QP/2P1B3/P1P2P2/2K3R1 w - - 0 24 | Bh6 | Identify any White knight outposts on the board. | g5 | outposts |
r2k3r/p5pp/1n6/B7/2Q5/8/5PPP/6K1 b - - 0 25 | Kd7 | Is the move from d8 to d7 legal? | Yes | legality |
r3kb1r/pQ3ppp/n2p4/1N6/2B1P3/1P2qP2/P5PP/R4RK1 w kq - 1 19 | f4e3 | Is the Black king in check? | No | check |
r1b1k2r/ppppqppp/2n2n2/b7/2B1P3/1QN2N2/P4PPP/R1B2RK1 w kq - 1 10 | Nd5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
8/5p2/4kp2/7p/5K2/2r2PP1/8/5B2 b - - 13 52 | f5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/6P1/8/8/8/1k1K4/p7/8 w - - 0 7 | g8=Q+ | Is the e-file open, semi-open, or closed? | open | files |
r2rb3/p1q1kp2/1p2pB1p/2p3p1/8/Q1PB2P1/PP3P1P/2KRR3 b - - 0 22 | Kxf6 | Are there any open files in this position? | Yes: d | files |
kr6/2p2R2/1b3p2/3PpN2/2K1P3/1P6/2R2P1P/r7 w - - 3 34 | Rxf6 | Does Black have any isolated pawns? | Yes: c7 | structure |
1k6/1p6/1K6/P1P5/8/8/8/8 b - - 0 1 | Kc8 | Is the White king in check? | No | check |
8/1p1k4/2b4R/4P3/1Ppp4/6R1/4K3/2r5 b - - 1 40 | h3g3 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/5pkp/8/1pp1p3/p3Nq2/P4Q2/8/K7 w - - 2 47 | Qg2+ | What piece is on g2? | Empty | occupancy |
7r/6p1/4p3/2b1R3/1pkpKP2/2p4P/p1P5/7R w - - 0 54 | Rxe6 | Is the White king in check? | No | check |
6k1/5pp1/5n1p/8/8/7P/4KPP1/3r4 b - - 1 30 | f1e2 | What is the material balance in this position? | Black is up 8 pawns of material | material |
r3kbnr/pppq1ppp/4p3/3P4/3QPB2/2Np1P2/PP3P1P/R3K2R w KQkq - 2 11 | O-O-O | Is the move from d4 to c4 legal? | Yes | legality |
r1b4r/kp2Q1p1/p1qBp2p/8/6P1/3B4/P1P4P/3RK3 w - - 3 28 | Bc5+ | What piece is on g7? | Black Pawn | occupancy |
1r2b1k1/3n4/p2p3p/2p2p2/P1Pb1B2/1p1P3P/1P4PK/1B1R1N2 b - - 1 33 | Ne5 | What piece is on e3? | Empty | occupancy |
5rk1/p5p1/1pp1R3/3p4/1P1P1bp1/2P2q2/P4P2/2QNB1K1 w - - 2 30 | Re3 | Does White have any isolated pawns? | Yes: f2 | structure |
4k3/4P3/3K4/8/8/8/8/8 w - - 1 6 | Ke6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1r3k1/np1nP1pp/pB6/P2Pp2b/8/1Q5P/1P3PP1/R5K1 w - - 1 24 | Bd8 | Is the move from h3 to c8 legal? | No | legality |
r1b1k2r/1p1p1ppp/p3p3/4P3/3N3Q/2NB2P1/PPP1KP1P/q7 b kq - 0 19 | d5 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2kr1b1r/ppqb1ppp/2ppnn2/8/1P1NPP2/2N1BQ2/P1P4P/2KR1BR1 w - - 1 16 | Nb3 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
2R5/1k1q1pb1/1p5p/1p1p2p1/P2P4/3NP3/K4PP1/2R5 w - - 1 41 | a5 | Is the move from g2 to d6 legal? | No | legality |
8/3b1kN1/8/4B3/2K5/P7/r1P5/8 w - - 0 44 | Kb3 | Identify any White knight outposts on the board. | b4 | outposts |
rnb2rk1/pp2q1p1/2p1p1Q1/3pP3/1bPP3P/2N2N2/PP1B1PP1/R3K2R w KQ d6 0 14 | d7d5 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1bqk2r/1p2bppp/p1Bppn2/2p5/4P3/2N2N1P/PPPP1PP1/R1BQ1RK1 b kq - 0 8 | b5c6 | Is the Black king in check? | Yes | check |
1rqr2k1/4bpp1/2npbn1p/p1p1p3/PpB1P3/2PPBNNP/1P2QPP1/R3R1K1 w - - 4 19 | Bxe6 | Are there any open files in this position? | No | files |
2r5/p2r1qk1/R1n3p1/3p2Qp/2p4P/2P3P1/1P3P2/4RBK1 b - - 0 37 | Rb7 | Does Black have any passed pawns? | No | structure |
3rr1k1/1pq1bppp/p4n2/2P1n2b/PP1N4/BBN1PP2/4Q2P/R2R2K1 w - - 3 19 | Rf1 | Is the Black king in check? | No | check |
1r3rk1/2pqbppp/p1np4/1p1Bp2b/4P3/P2PBN1P/1PP2PP1/R2Q1RK1 w - - 1 14 | Nxe5 | Identify any Black knight outposts on the board. | None | outposts |
2kr1b1r/ppp2q2/5np1/1P6/2P3p1/P5P1/2QNPPKP/R1B4R b - - 2 19 | Bc5 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/4k1p1/1p6/2n1P3/4K3/8/2R5/8 w - - 0 42 | Kd5 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
8/8/8/6Bp/4k3/3r1p1P/4KPP1/8 w - - 0 56 | f4f3 | Is the White king in check? | Yes | check |
7k/8/8/2p5/8/2PK4/8/8 w - - 0 49 | Kc4 | Identify any White knight outposts on the board. | None | outposts |
3r4/4k2p/1p1r1pp1/pnp5/P1R5/1P4P1/1R2PPBP/3nBK2 w - - 1 26 | Ra2 | What is the material balance in this position? | Equal | material |
r1bk2nr/pppp1ppp/2n5/8/2P5/2p2N2/P1Q1PPPP/R3KB1R w KQ - 0 9 | e8d8 | What is the material balance in this position? | White is up 4 pawns of material | material |
n1rkbrqb/pppppppp/2n5/8/8/6P1/PPPPPP1P/NNRKBRQB w KQkq - 1 2 | c4 | Are there any open files in this position? | No | files |
r3k2r/1pp2pp1/p2pBq1p/n1b1p3/4P3/P2P1N1P/1PP2PP1/R1BQ1RK1 b kq - 0 11 | c4e6 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1bqk2r/ppp2ppp/5n2/4p3/2BnP3/8/PPP3PP/RNBQ1RK1 w kq - 0 9 | Bg5 | Is the d-file open, semi-open, or closed? | open | files |
8/rK6/5p2/8/R7/4k3/8/8 w - - 0 6 | Rxa7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r2k1/2pqnpp1/1p5p/p2P4/P2p1rP1/2P1N1P1/1PQ2P2/3RR1K1 b - - 0 23 | dxe3 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/p2Bn3/1p2P2p/1P3rp1/P2bp3/4B2P/4RPP1/6K1 w - - 0 33 | Bxd4 | Does Black have any isolated pawns? | Yes: e4 | structure |
r4rk1/pp1nbpp1/1q2p2P/3n4/3p3P/5N2/PPPBQP2/2KR1N1R w - - 1 17 | Ng5 | Does Black have any passed pawns? | No | structure |
1r2rbk1/7p/pp1p2p1/6P1/PnnN1R2/2N5/1PP3KP/5RB1 w - - 0 28 | Ne4 | Does Black have any isolated pawns? | Yes: d6 | structure |
rnbqkb1r/pp3ppp/3p1n2/2pPp3/8/2N3B1/PPP1PPPP/R2QKBNR b KQkq - 1 5 | Be7 | What is the material balance in this position? | Equal | material |
r2q1rk1/2p1bppN/p1n5/1p1p4/3P3B/P4B2/1PPQ1P1P/2KR3R b - - 0 19 | Bxh4 | Is the White king in check? | No | check |
1R6/6p1/2k2p1p/8/3KP2P/6P1/1p4r1/8 b - - 12 12 | h5 | Is the move from g2 to d2 legal? | Yes | legality |
rnbq1rk1/1pp1bppp/4pn2/p2p4/2P5/1PN2NP1/P2PPPBP/R1BQ1RK1 b - - 1 7 | c6 | Are there any open files in this position? | No | files |
8/pB1pkppp/4p3/8/2P5/6P1/r3KP1P/7R w - - 0 25 | Ke3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/p4pp1/2p4p/4b3/5R2/1PN3P1/1PPP1PKP/R1Bq4 b - - 1 24 | Qxc2 | Is the move from a8 to c8 legal? | Yes | legality |
8/7p/1R3p2/8/2pP4/2k1P3/r4PPP/5RK1 w - - 2 34 | h3 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
r2qk2r/1b2ppbp/p5pn/4P3/1p1pNP2/3BB3/PPP1Q1PP/2KR3R w kq - 2 14 | Bxd4 | What piece is on b6? | Empty | occupancy |
1b2r1k1/5pp1/p1p4p/2p5/2Pp4/PP1P1P1P/3B2q1/R5K1 w - - 0 28 | g3g2 | Is the White king in check? | Yes | check |
8/5pk1/1R5p/8/P5PK/4Pr2/5P2/8 b - - 0 51 | Rxf2 | Does White have any isolated pawns? | Yes: a4 | structure |
2k5/Q6p/1pqp4/p2NpP2/P3P2P/4n2N/1PP3n1/R2K4 w - - 1 30 | g4e3 | Is the White king in check? | Yes | check |
Nn1k3r/pp3ppp/3p3n/8/3P4/6P1/PPP1B2P/3RK2q w - - 0 15 | e4h1 | Is the Black king in check? | No | check |
r3r1k1/3n1pnp/2p3pQ/p3P3/PpR1PP2/1P1Nq3/6PP/2N2R1K b - - 2 25 | e2c1 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bq1rk1/p3np1p/2p3p1/2bp4/8/3B4/PPP1QPPP/RNB2R1K w - - 0 4 | Be3 | Is the move from c1 to d2 legal? | Yes | legality |
2rq1rk1/pp3ppp/2N1p3/3p4/1Q1P1Bb1/4P3/PP3PPP/R3K2R b KQq - 0 1 | Rxc6 | Does Black have any passed pawns? | No | structure |
8/6p1/2k2r2/2p1p3/3p4/5P2/6PP/1R1R2K1 b - - 0 37 | f2f3 | What is the material balance in this position? | White is up 4 pawns of material | material |
rnb1qrk1/p2n1p1p/1pp1p1p1/6PP/1b6/2NBPN2/PBQP1P2/R3K2R w KQ - 0 15 | Ne4 | Identify any Black knight outposts on the board. | a5 | outposts |
r2qr3/pppbnppk/3p3p/4p3/4P1NN/2PP2R1/PP3PPP/R2Q2K1 b - - 5 17 | Ng8 | What is the material balance in this position? | Equal | material |
2k5/2p2p1N/pp2b3/5p2/8/PP1R4/2P3rP/1K6 b - - 0 23 | Rxh2 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
rnb1r1k1/1p3pbp/pq1p2p1/2pP3n/P7/2N1PN1P/1P2BPPB/R1Q1K2R b KQ - 6 13 | Nf6 | What piece is on d1? | Empty | occupancy |
3q1rk1/5pp1/p3b2p/3N2n1/3R3R/1BP1Q1P1/5PKP/r7 b - - 3 37 | Qd7 | Does Black have any isolated pawns? | Yes: a6 | structure |
1Q6/3r4/P7/2RP4/2p2p1p/2P2Ppk/5K2/8 w - - 0 51 | g4g3 | Is the Black king in check? | No | check |
rnbk2r1/1pp2p2/p2pqn2/1P1N2pp/Q1PpP3/P2P2B1/4BPPP/1R3RK1 w - - 0 18 | b6 | Is the move from h2 to h3 legal? | Yes | legality |
1rb2r2/1p2kp2/1Np1n1p1/p3p1p1/P3P1B1/7P/1PPR1PP1/3R2K1 w - - 5 28 | Nxc8+ | What is the material balance in this position? | Equal | material |
2r1r1k1/3nbppp/bq3n2/p2p4/2PN4/6P1/PB1N1PBP/1R1QR1K1 b - - 2 19 | dxc4 | Is the Black king in check? | No | check |
4k1r1/pp3p1p/1qn1pp2/8/4PP2/P1Nr4/1P3RPP/R3Q1K1 w - - 5 18 | Qe2 | Does White have any isolated pawns? | No | structure |
4r1k1/p3q1pp/2b5/3ppr2/3B4/P7/2P1QPPP/R3R1K1 w - - 0 24 | f4 | Does Black have any isolated pawns? | Yes: a7 | structure |
r1b2rk1/pp1n1pbp/2pp1np1/q3p3/2PPP3/2N2NPP/PP3PB1/R1BQ1RK1 w - - 1 10 | Qe2 | Is the g-file open, semi-open, or closed? | closed | files |
rnb1kbnr/pp3ppp/8/2ppP3/Q2P4/8/PP3KPP/RNB2BNR b kq - 1 7 | d1a4 | Is the Black king in check? | Yes | check |
r2qkb1r/1b1n1ppp/1p6/1ppp2N1/8/1P1PP3/PBQ1BP1P/R3K1R1 w Qkq - 0 16 | Bh5 | Does White have any isolated pawns? | Yes: h2 | structure |
r1bqk1nr/pppp1ppp/2n5/2b1p3/2B1P3/2N5/PPPP1PPP/R1BQK1NR w KQkq - 4 4 | Qg4 | Does White have any isolated pawns? | No | structure |
1k1r4/pp1bp1bp/N5p1/3PP3/1n2p3/4B3/5PP1/2R1KB1R b K - 0 22 | bxa6 | Is the move from d7 to e5 legal? | No | legality |
rnb1k2r/pp1p1ppp/5n2/3Pp3/8/PP6/3qPPPP/RN2KBNR w KQkq - 0 9 | a5d2 | Is the White king in check? | Yes | check |
5Q2/8/2p5/p2kp3/2qp4/PR6/KP6/8 w - - 5 49 | Qf7+ | Is the h-file open, semi-open, or closed? | open | files |
r4rk1/3n1pp1/2p1bn1p/3p2P1/pb1P3B/3B1Q2/NqPKNP1P/3R3R w - - 2 25 | a3b4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkbnr/ppp1pppp/8/8/3Pp3/2N5/PPP2PPP/R1BQKBNR b KQkq - 1 3 | e5 | What piece is on d7? | Empty | occupancy |
2r2rk1/pp1bpp1p/3p2p1/1P1P4/4P3/5P2/P3B1PP/R4RK1 w - - 1 20 | Rfc1 | Is the move from e4 to a4 legal? | No | legality |
4r1k1/pp1b2pp/3b4/3p4/1P1q1P2/P7/1Q3P2/R1B2BK1 b - - 2 23 | Qe4 | What piece is on g8? | Black King | occupancy |
3rkb1r/1pq3pp/p1p1bp2/P3n3/4NB2/6P1/1P2PPBP/R1Q2RK1 b k - 1 16 | Bb4 | What piece is on f1? | White Rook | occupancy |
1r4k1/R3R1p1/5p2/8/7p/K3P3/6r1/8 w - - 0 36 | h5h4 | Identify any Black knight outposts on the board. | e5, g3, g5 | outposts |
r3kb1r/5ppp/pqNp4/1pnPn1P1/5Pb1/2N1Q3/PPP4P/R1B1K2R b KQkq - 2 15 | Na4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1bqk1nr/pppp1ppp/2n5/8/1b1PPB2/2N2N2/PPP3PP/R2QKB1R b KQkq - 0 6 | d5 | Are there any open files in this position? | No | files |
2r2rk1/pp1Q1pp1/5q1p/3P4/8/2P1pP2/P3P1PP/2R1KB1R w K - 0 18 | Qa4 | Is the White king in check? | No | check |
3qr1k1/3b1pp1/3p3p/2pPp2Q/4n3/2P1NP1P/1RB3P1/r1B1R2K b - - 0 33 | Ng3+ | Is the move from a1 to g7 legal? | No | legality |
rn2k1nr/ppb1qp2/2p4p/4P1p1/2bP1p2/3Q1N2/PP3NPP/R1B2RK1 w kq - 0 15 | e6c4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
rnbq1rk1/pp2ppbp/5np1/3p4/2PP4/2N2N2/PP2BPPP/R1BQ1RK1 b - - 1 8 | Nc6 | What piece is on g1? | White King | occupancy |
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