fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1R6/pp3kp1/2pp4/8/P2p2p1/1P1P4/1KP2r1r/8 b - - 3 40 | e8b8 | What is the material balance in this position? | Black is up 8 pawns of material | material |
3qr1k1/pbr1bp1p/1pn1p1pB/8/2BP1QN1/2P3P1/P4P1P/2R1R1K1 w - - 3 22 | Qxf7+ | Does Black have any passed pawns? | No | structure |
r3rbk1/p1q2pp1/1n4p1/1R1p4/3B2P1/2PQ1N1P/P4P2/5RK1 w - - 7 22 | Kg2 | Does Black have any isolated pawns? | Yes: a7, d5 | structure |
8/8/4k2p/p3n1p1/1p2R1P1/1Pbp2BK/r6P/4R3 b - - 7 41 | Kd5 | What piece is on a7? | Empty | occupancy |
6k1/p1r3pp/1p2p3/3P1r2/2P1KP2/8/P1R3PP/3R4 b - - 0 27 | Rd7 | Does Black have any isolated pawns? | Yes: e6 | structure |
3k4/5p1p/p3p3/1Nb2p2/5P2/5B2/PP4PP/1K6 b - - 0 27 | axb5 | Is the White king in check? | No | check |
2q2rk1/rp1bbppp/p3pn2/8/P2N1B2/1QP2B2/1P3PPP/R3R1K1 w - - 3 16 | a5 | Does White have any isolated pawns? | No | structure |
8/8/5pp1/4k2p/4p2P/4K1P1/5P2/8 b - - 3 57 | g5 | Are there any open files in this position? | Yes: a, b, c, d | files |
r4k2/5ppp/1PBn4/2pPp3/8/2K2P2/6PP/8 w - - 0 39 | Bxa8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
3r4/3b1p1Q/pp2nk1p/3pRBq1/1P1P4/P5NP/5PP1/6K1 w - - 3 33 | Bg4 | Is the move from h7 to h8 legal? | Yes | legality |
6k1/6pp/4p3/B7/3P4/1P6/2b3PP/6K1 b - - 0 32 | Bxb3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/8/8/Np1b4/1P6/P1k5/5K2/8 w - - 0 1 | Ke2 | Identify any White knight outposts on the board. | b4 | outposts |
4k1nr/r1q2ppp/1p6/p2R4/P1B2p2/1Q2b3/1PP3PP/1K3R2 w k - 1 19 | Rfd1 | Is the move from g2 to g6 legal? | No | legality |
r1bqk2r/pppp1ppp/2n2n2/b7/2BpP3/2P2N2/P4PPP/RNBQ1RK1 w kq - 0 8 | Ba3 | Does White have any isolated pawns? | Yes: a2, c3 | structure |
5qk1/p1rb1R2/1p2Q2p/8/5P2/2p5/P5PP/7K w - - 2 37 | Qg6+ | Does Black have any isolated pawns? | Yes: h6 | structure |
8/5p2/4r2p/1k2P2P/1pP1K3/8/5B2/8 b - - 0 44 | b3c4 | Is the Black king in check? | Yes | check |
r1bqk2r/p2p1pbp/1pnPpnp1/2p5/2P1P1P1/2N5/PP3PB1/R1BQK1NR b KQkq - 1 10 | e5 | What piece is on b2? | White Pawn | occupancy |
r1bqk1r1/pp1nnp1Q/4p3/P2pP3/8/P1p2N2/2P2PPP/R1B1KB1R b KQq - 2 11 | Nf8 | What piece is on e8? | Black King | occupancy |
2k3r1/pp2n3/5K2/4p3/q7/5N2/P2p1PPP/3R3R b - - 4 32 | g5f6 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r4rk1/2p1bppp/p1n2n2/3qp3/Pp6/1P1P1NN1/2P2PPP/R1BQ1RK1 b - - 0 15 | Nd4 | Does White have any isolated pawns? | No | structure |
2r2r2/4qpkb/3p3p/1pn1p1p1/4n3/P1P2NB1/BP2QPPP/3RR1K1 w - - 6 24 | Rd5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b2rk1/pp1pppbp/2n3p1/q3P1N1/2BP4/4B3/P4PPP/1R1Q1RK1 b - - 6 14 | Qd8 | Is the move from a5 to c3 legal? | Yes | legality |
r1b1k2r/p1ppnppp/2n3q1/bp2P3/2B5/BQPp1N2/P4PPP/RN2R1K1 w kq - 0 12 | Qxb5 | Does White have any isolated pawns? | Yes: a2, c3 | structure |
1r1q1rk1/pp1bpp1p/3p1npQ/n7/3NP3/1BN2P2/PPP3PP/2KR3R b - - 0 13 | b5 | Are there any open files in this position? | No | files |
r2q1rk1/ppb3pp/2p1p3/2Pn1p1b/2NPp3/1P4P1/PBQ1PPBP/3RR1K1 b - - 6 16 | Qe7 | Are there any open files in this position? | No | files |
r1b1k3/1p2b1pr/p1q1pn1p/8/4p1P1/2NB3Q/P1PB3P/1R2KR2 w q - 0 20 | Nxe4 | Does Black have any passed pawns? | Yes: e4, e6 | structure |
6k1/6pp/1R6/8/4n3/P7/6PP/4B1K1 b - - 0 33 | b4e1 | What is the material balance in this position? | White is up 6 pawns of material | material |
4k3/8/2N2p2/p1b1pP1p/P2p3P/3K4/2P2P2/8 w - - 0 47 | Nxa5 | Are there any open files in this position? | Yes: b, g | files |
6r1/p2r1k1p/1p3b1B/3Bp3/1PPp2pP/P2P2P1/5P1N/1R2K2R b K - 2 26 | b7d5 | Is the Black king in check? | Yes | check |
r4r1k/7p/3p4/p4p2/2P2R2/2P4P/R5P1/6K1 w - - 1 29 | Ra4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r7/pBp1k1p1/1b1p4/4p1q1/2PPP1n1/1Q6/PP3rP1/RN1R2K1 b - - 1 17 | Qf4 | Is the f-file open, semi-open, or closed? | open | files |
r2q1rk1/pppnQppp/3p1n2/3P4/8/5N2/PPP2PPP/RNB1R1K1 b - - 0 11 | e2e7 | What is the material balance in this position? | White is up 3 pawns of material | material |
6k1/6bp/8/6pP/p2p2P1/6B1/PPP5/1K2r3 w - - 0 32 | e8e1 | Is the White king in check? | Yes | check |
r1b2bnr/pp3kpp/5n2/8/8/4BN2/PPP2PPP/RN1R2K1 w - - 0 12 | e8f7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b5/1p4pk/p6p/2q1Rp1Q/5P2/P2B1nP1/1P4P1/1R4K1 w - - 4 33 | d4f3 | Is the White king in check? | Yes | check |
r1bq1rk1/pp1n1ppB/2n1p3/3pP3/3P4/P1P2N2/5PPP/R1BQ1RK1 b - - 0 1 | Kh8 | Is the move from g8 to h7 legal? | Yes | legality |
2rq1rk1/pb3p1p/1p2pbp1/7R/2pP4/PP5R/1B3PPP/3Q1BK1 w - - 0 20 | Qg4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3k4/5p2/1p2p2p/p2rPp2/R7/1P2P1PP/P3K3/8 w - - 0 31 | Rd4 | Is the White king in check? | No | check |
6r1/1kp5/1p2p2q/pP1P3p/P2P4/2P1R2Q/3N2r1/3R3K b - - 1 34 | Qg5 | Does White have any isolated pawns? | No | structure |
rn3rk1/pppb2pp/3p4/3P4/2P1p1P1/1P5P/PB1qBP2/R3K2R w KQ - 0 17 | g5d2 | Is the White king in check? | Yes | check |
r1br2k1/4bpp1/p1n1pn2/1p1p1q2/5B2/1NN2P2/PPPQ4/2KR1B1R w - - 2 21 | Bd3 | What piece is on f3? | White Pawn | occupancy |
2r3k1/1nq5/3pp2p/6p1/Q1pPN3/4P1P1/5P1P/5RK1 w - - 0 29 | f4 | What piece is on e5? | Empty | occupancy |
r4rk1/pp2qppp/n2p1n2/2pP4/2P2P2/2N4Q/PP3KPP/R1B4R w - - 3 14 | Re1 | Is the e-file open, semi-open, or closed? | open | files |
r3kbnr/1pp2ppp/p1p5/8/3qP3/2N1BP2/PPP2P1P/R3K2R w KQkq - 0 10 | Bxd4 | Does White have any isolated pawns? | Yes: h2 | structure |
r2qnrk1/1b1nbppp/p2p4/1p2pNP1/4P1Q1/2N4P/PPP3B1/R1B2RK1 w - - 3 16 | Be3 | Are there any open files in this position? | No | files |
rnbqkbnr/pppp1ppp/8/8/3QP3/8/PPP2PPP/RNB1KBNR b KQkq - 0 3 | Nc6 | What piece is on g8? | Black Knight | occupancy |
8/8/7p/p3kp2/P2N4/2NK2PP/8/1r6 b - - 21 60 | Rh1 | Is the Black king in check? | No | check |
2kr1b1r/ppnnp1p1/2p3bp/8/2PP4/1PB1qP1B/P2N4/R3K1NR w KQ - 2 23 | f4e3 | Is the White king in check? | Yes | check |
r1b1qrk1/p1p4p/5b2/1PP1p3/2P1Npn1/3N4/P4PPP/1RBQ1RK1 b - - 2 19 | Bf5 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
rnb1kb1r/ppp4p/5pp1/1N2p3/4P3/2P5/PP3PPP/R1BK1B1R b kq - 1 9 | Na6 | What is the material balance in this position? | Equal | material |
3r1nk1/5ppp/2p1bB2/p7/1p5P/8/PPP5/2K3R1 b - - 1 1 | Ng6 | What piece is on g1? | White Rook | occupancy |
6kr/3R2b1/2PPn1p1/4p3/1p5p/5P2/1P4PP/5K2 w - - 1 34 | Re7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/4k1b1/4ppp1/p2p3p/1p1PnP1P/1P2P1P1/P4NK1/3N4 b - - 5 36 | Nc3 | Is the c-file open, semi-open, or closed? | open | files |
r1b1k2r/pp2nppp/2n1p3/q1ppP3/P2P4/2P2N2/2PB1PPP/R2QKB1R b KQkq - 4 9 | c4 | Identify any Black knight outposts on the board. | None | outposts |
8/8/8/8/1KP5/5k2/3Q4/8 b - - 4 76 | e1d2 | What is the material balance in this position? | White is up 10 pawns of material | material |
r1b2rk1/p3qppp/2p1pB2/2bp4/2P5/6P1/PPQ1PPBP/RN3RK1 b - - 0 11 | gxf6 | Identify any White knight outposts on the board. | None | outposts |
2k1r3/1p4pp/p7/8/5P2/3R4/PPP4P/2K5 b - - 2 24 | Re2 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r1q1rk1/3n1pb1/bp1pp3/p5pP/P2BP1P1/1B3QN1/1PP2N2/R3K2R b KQ - 0 21 | Bxd4 | Are there any open files in this position? | No | files |
r3kb1r/1bqn1ppp/p2ppn2/1p4B1/3NPP2/2NB1Q2/PPP3PP/2KR3R w kq - 2 11 | Rhe1 | Does White have any passed pawns? | No | structure |
r2qk2r/pb4pp/3bpn2/1P2n3/Np1NP3/3B4/P4PPP/R1BQK2R w KQkq - 1 13 | Bc2 | What piece is on h8? | Black Rook | occupancy |
r3k2r/pp3ppp/2nbpn2/8/1PB3b1/P3PN2/1B1N1PPP/R2K3R b kq - 4 11 | Ke7 | Is the d-file open, semi-open, or closed? | open | files |
r4rk1/npqNbppp/p2p4/P2P4/8/1QN1B2P/1P3PP1/R1R3K1 b - - 0 20 | Qxd7 | Is the move from h7 to e8 legal? | No | legality |
2q3k1/2r1p1bQ/p4r2/1p6/3P1n2/2P4P/P1BB1P1P/4R1K1 b - - 2 30 | Kf8 | Does Black have any passed pawns? | No | structure |
r3k2r/bppqnpp1/p2p1nbp/P3p3/1PB1P2N/2PP2NP/5PP1/R1BQ1RK1 w kq - 3 15 | Be3 | What piece is on f2? | White Pawn | occupancy |
r2qk2r/1pp1npp1/3p1n1p/p1bPp3/7N/3P2P1/PPP2PBP/R1BQ1RK1 w kq - 1 11 | c4 | Is the move from c1 to d3 legal? | No | legality |
5rk1/pp3ppp/2n5/8/8/P3P3/1P3P1P/2Kq4 w - - 0 22 | h1d1 | Identify any White knight outposts on the board. | d4 | outposts |
1r6/Q4pk1/3p1qp1/2rP3p/p4p2/P1PR1B1P/5P2/2K1R3 b - - 0 30 | Rxc3+ | Identify any White knight outposts on the board. | d4 | outposts |
8/6p1/p1p3k1/K7/2P1n3/6B1/P6P/8 b - - 1 48 | Nc3 | Is the move from e4 to g3 legal? | Yes | legality |
r1bqk2r/1p2ppbp/1np2np1/p2P4/P2P4/1BN2P2/1PP1N1PP/R1BQ1RK1 b kq - 2 10 | Nbxd5 | What piece is on e8? | Black King | occupancy |
r1b1k1nr/ppp2q1p/2nB4/8/4P3/2P3Q1/P1P3PP/R4R1K b kq - 0 14 | Nf6 | Is the move from c7 to d3 legal? | No | legality |
4kbnr/ppp1pppp/2n5/qB6/3r2b1/2N2N2/PPPB1PPP/R2QK2R w KQk - 0 8 | Nxd4 | Does White have any passed pawns? | No | structure |
rn1q1rk1/1b1nbp1p/p2p2p1/1p2pNP1/4P1Q1/2N4P/PPP3B1/R1B2RK1 w - - 0 16 | Be3 | Identify any Black knight outposts on the board. | e5 | outposts |
6k1/p4p2/5bbp/6p1/3N2P1/1P1rPP2/P2K3P/R5R1 w - - 2 32 | c3d3 | Is the White king in check? | Yes | check |
r2k1b1r/5p2/p1Q5/2BRPp1p/2P4q/8/PP4PP/6K1 b - - 0 28 | Bd6 | Identify any White knight outposts on the board. | d5, d6, f6 | outposts |
rnbqkbnr/ppp3pp/4p3/5p2/3PN3/8/PPP2PPP/R1BQKBNR w KQkq - 0 5 | Ng5 | Is the move from a2 to a3 legal? | Yes | legality |
2r3k1/p2b1ppp/1b2p3/3pP3/8/Q1P5/P1KNB1PP/q2R4 b - - 4 24 | b1d2 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
k1r5/p5pp/p3bp2/1P6/2n2P1P/2R5/4PP2/3R2K1 w - - 2 31 | bxa6 | Does White have any passed pawns? | No | structure |
r2q1rk1/4bppp/p3pn2/1p1p3b/1PNP4/P3PN1P/1B2BPP1/R2QR1K1 b - - 0 15 | d2c4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r5k1/p3bppp/2p1p1n1/8/N3P3/5N2/p1P1bPPP/R1B3K1 w - - 0 17 | Rxa2 | Does Black have any passed pawns? | Yes: a2, a7 | structure |
r2q1rk1/ppp1npbp/2npb1p1/3N4/4PP2/4Q3/PPPB2PP/2KR1BNR w - - 3 10 | Bc3 | Is the move from g2 to a1 legal? | No | legality |
b7/p5kp/1b2B3/4P3/3p1r2/1N2n2P/PP6/1RB3K1 b - - 0 29 | d3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r1bqk2r/pppn1p2/5n1p/3p2p1/1b1P4/2N1PNB1/PP3PPP/R2QKB1R b KQkq - 1 9 | Ne4 | Is the move from b4 to c3 legal? | Yes | legality |
1rb1r1k1/3n1p1p/p2p1qpB/2nP4/2p1PQ2/P1P3NP/R1B3P1/4R1K1 w - - 1 27 | Qe3 | Is the move from g3 to e2 legal? | Yes | legality |
4r1k1/pR1br1b1/3p1nqn/P1pP1p2/5P1p/2N1BB1P/3Q1NP1/1R4K1 w - - 4 27 | Ncd1 | Are there any open files in this position? | Yes: b, e | files |
r1bq1rk1/pp1n2pp/2pbpn2/3p1p2/2PP4/3BPN2/PP2NPPP/R1BQ1RK1 w - - 6 9 | Ng5 | Does Black have any isolated pawns? | No | structure |
r4rk1/p1p1qppp/1bp1bn2/6B1/2NP4/P4N2/1P3PPP/2RQR1K1 w - - 1 16 | Nce5 | What piece is on a7? | Black Pawn | occupancy |
3r1br1/1bk2p1p/p3pp2/8/Pp1PP3/5Q1P/1P3PP1/5RK1 w - - 0 22 | Qxf6 | Is the move from f3 to c3 legal? | Yes | legality |
8/5ppp/2R3k1/5pP1/8/3K1Q2/8/4r3 b - - 1 54 | c3c6 | Is the Black king in check? | Yes | check |
3Q2rk/2n4p/p3p3/1pP1Pp2/8/2P5/PP5P/5K2 w - - 1 30 | Qxc7 | Does White have any passed pawns? | Yes: c5 | structure |
2kr3r/ppp2ppp/6q1/1PQ5/8/B4P1b/P3NP1P/R1R3K1 w - - 3 21 | Ng3 | What piece is on b7? | Black Pawn | occupancy |
1k3b1r/3r2pp/1P3p2/R7/4nP2/6P1/1P2PB1P/2R3K1 w - - 0 26 | Rca1 | Identify any White knight outposts on the board. | None | outposts |
1k5r/1Pp2ppp/p2r4/q2n4/B1Q2p2/1KP5/PP4PP/R1B4R w - - 2 21 | Ka3 | Is the White king in check? | No | check |
5rk1/2qn2n1/p3p1p1/PbppP2p/5rPN/2P1Q2P/3N1PB1/R3R1K1 b - - 1 31 | d4 | Does Black have any isolated pawns? | Yes: a6 | structure |
r1b2rk1/1pp2ppp/1p2q3/4p3/1n6/3P1N2/P3BPPP/R1BQ1RK1 w - - 0 14 | a7b6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/pppqnppp/1b1p4/8/2BPP3/P2QBPn1/1P3PKP/R4R2 w - - 0 16 | hxg3 | Identify any Black knight outposts on the board. | None | outposts |
8/6k1/3R4/1p2r1pp/2p5/2P2KP1/1P6/8 w - - 2 50 | Rb6 | Does Black have any isolated pawns? | No | structure |
1k2r2r/pp3ppp/3q2b1/2p5/2P1P3/PQ1P1P1P/1P4B1/2KR2R1 w - - 0 22 | Qc3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3k3/ppp1qpp1/3p1nr1/8/1PPQp2p/P3P3/1B1P1Pb1/2KR1B1R w q - 0 16 | Rxh4 | What piece is on a6? | Empty | occupancy |
8/p2k1p1p/bp6/8/P7/KP6/3r4/8 w - - 0 33 | h2d2 | What is the material balance in this position? | Black is up 10 pawns of material | material |
5k2/2R3p1/1r1P3p/5b2/3nNPpP/6P1/5N2/4K3 b - - 3 41 | Rb2 | Does Black have any passed pawns? | No | structure |
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