fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2r3k1/5pbp/p3p1p1/q3Pn2/1n6/1PN2B2/1BP2PPP/1K2R3 b - - 1 21 | h1e1 | What is the material balance in this position? | Black is up 8 pawns of material | material |
2b1kb1r/rp1n1ppp/1qn5/3pPp2/p2p1N1P/P1P2N2/1P4P1/R1BQKB1R w KQk - 0 13 | cxd4 | Does White have any isolated pawns? | Yes: e5 | structure |
8/8/8/2K3Pk/R6P/1r4P1/8/8 w - - 1 66 | Kd6 | Is the move from c5 to g8 legal? | No | legality |
1Q3br1/1b1r1p1p/p7/k7/1p2p3/1P5P/5PP1/5RK1 w - - 4 29 | Qe8 | What piece is on f1? | White Rook | occupancy |
r1b1k2r/1pqp1ppp/p1n1pn2/8/Nb1NP3/4B3/PPP1BPPP/R2Q1RK1 b kq - 5 9 | Nxe4 | What piece is on a4? | White Knight | occupancy |
r1bq1rk1/ppp3b1/3p1nn1/3Pp1pp/2P1Pp2/2N2P2/PP1BB1PP/R2QNRK1 w - - 0 16 | h3 | Is the move from b2 to b2 legal? | No | legality |
3k3r/4b3/2n1b1Q1/7P/7p/8/8/1NB1KB1R w K - 0 26 | Qxe6 | Does Black have any isolated pawns? | Yes: h4 | structure |
r4rk1/ppRb3p/4p3/3p2p1/1P1n2P1/P5R1/5P1P/2B1KB2 b - - 3 22 | Rac8 | What piece is on a5? | Empty | occupancy |
r5k1/6pp/p7/1b4B1/1p2P3/1P1N1Rb1/7q/R2Q1K2 b - - 5 28 | Re8 | Identify any Black knight outposts on the board. | b5 | outposts |
1r2k2r/p2n1pb1/q2pp1pp/1pp5/2PnP3/1PNP2PP/P2B1PB1/1R1Q1RK1 w k - 4 18 | a4 | Is the move from d1 to g2 legal? | No | legality |
5k2/p4p1p/7p/2p1P3/2N1P3/5P2/PbP2P1P/3K4 b - - 0 21 | e2d1 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/5pk1/1Q1Nbqpp/2r5/p7/6PP/1P4BK/8 w - - 0 46 | Ne8+ | Does White have any isolated pawns? | Yes: b2 | structure |
r1q3k1/1pp2rbn/3p2Np/3Pp3/p1P5/P1NQB2P/1P3PP1/R5K1 b - - 0 21 | Ng5 | Identify any Black knight outposts on the board. | None | outposts |
r3k2r/1ppbqppp/p1pb1n2/4p1N1/2N1P3/2PP3P/PP3PP1/R1BQK2R b KQkq - 6 11 | O-O | Does Black have any passed pawns? | No | structure |
2r1k1r1/3nq1bp/p2pNRp1/3P2P1/Q7/2P5/P1P4P/5RK1 b - - 4 24 | Bxf6 | Identify any Black knight outposts on the board. | None | outposts |
r1b3k1/1p1pb1pp/pNn1p3/2P5/3Nnq2/8/PP2BP1P/2RQ1RK1 b - - 1 16 | Bf6 | Are there any open files in this position? | No | files |
r1bq1rk1/pppn1ppp/4pb2/8/2BPN3/5N2/PPP2PPP/R2QK2R w KQ - 4 9 | Qe2 | What is the material balance in this position? | Equal | material |
rnbqk2r/pp2bppp/5n2/3p2B1/3p4/2N1PN2/PP3PPP/R2QKB1R w KQkq - 0 8 | c5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/4kpp1/2b1p2p/1n1pP3/2pP1P2/2P1N3/3K2PP/3B4 b - - 10 6 | f5 | What piece is on d1? | White Bishop | occupancy |
6k1/5pp1/2p4p/8/2P2Q2/b3p2P/4N1P1/3q3K w - - 2 45 | b3d1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5nr1/1pq1bkp1/p1rppnNp/4p2P/2P1P3/4NQ2/PP3PP1/R1B2RK1 w - - 1 22 | Nh4 | What is the material balance in this position? | Equal | material |
4R1k1/1b2q1bp/1n2p1p1/1p1pPp2/3P4/1P3NN1/4B1PP/2BQ1RK1 b - - 0 20 | a8e8 | Is the White king in check? | No | check |
r2q1rk1/pb2bp1p/1pn1pnp1/2ppN3/3P3B/2PBP3/PP1N1PPP/R2Q1RK1 w - - 2 12 | Bg5 | Identify any Black knight outposts on the board. | None | outposts |
r1br2k1/pp3ppp/2n5/2qpP3/3N1P2/P1PB4/3Q2PP/R3K2R b KQ - 1 17 | Re8 | What piece is on f5? | Empty | occupancy |
r4r1k/pp3p2/2n4N/q1np2p1/7P/4P3/PPQ2PP1/R2K1B1R b - - 0 19 | g4 | Identify any White knight outposts on the board. | d4 | outposts |
r6r/1Q2qk2/p3p1p1/1p2P3/3P4/2P3R1/PP5P/6K1 w - - 1 4 | Rf3+ | Does White have any passed pawns? | No | structure |
r1bn1rk1/pp2b3/1q2pnp1/2pp2N1/3P1N2/2P5/PPQ2PPP/R1B2RK1 w - - 0 15 | Qxg6+ | Is the move from g5 to e6 legal? | Yes | legality |
4k3/1pp5/7p/8/4PP2/Ppp2n2/6R1/2K5 b - - 2 39 | Nd2 | Are there any open files in this position? | Yes: d, g | files |
rn2k1nr/p1p2ppp/1p2p3/8/1b3P2/5N2/PPP3PP/RNB1K2R w KQkq - 1 10 | f8b4 | Is the White king in check? | Yes | check |
rnbq1rk1/1p4pp/p2p4/3Pppb1/2P5/2N2P2/PP2B1PP/R1BQ1RK1 w - - 1 14 | Qb3 | Is the move from c4 to a2 legal? | No | legality |
2r3k1/pp4bp/3p2p1/3P4/4N3/7P/P2BQP1K/1q6 w - - 0 29 | Nxd6 | Does White have any passed pawns? | No | structure |
r1bqk2r/b2p1ppp/p3p1n1/1pP1n3/4PP2/1NN5/PP2B1PP/R1BQ1RK1 b kq - 0 12 | Nc4 | What piece is on g8? | Empty | occupancy |
8/5rpk/p7/5r2/BPp1p3/2PbB3/R4Np1/6K1 w - - 0 44 | Bd1 | Identify any Black knight outposts on the board. | f3 | outposts |
r1b1k2r/ppq1nppp/1bn1p3/3pP3/5B2/1N1B1N2/PPP2PPP/R2Q1RK1 b kq - 9 10 | Nb4 | Is the move from c8 to d7 legal? | Yes | legality |
3k3r/7p/2KNbn2/r7/3bppp1/P7/1PP3P1/R1BQ3R b - - 0 24 | Bd5# | Is the f-file open, semi-open, or closed? | semi-open for White | files |
1r1qk2r/pp3ppp/2p1bnn1/8/PQB1P3/2N1B3/1P3PPP/R3K1NR w KQk - 0 13 | d7e6 | What is the material balance in this position? | White is up 3 pawns of material | material |
3brk2/1bq3p1/pp1p1nQN/3P4/P4P2/2r5/6RP/1BB2RK1 w - - 2 27 | Bb2 | Identify any Black knight outposts on the board. | a5 | outposts |
8/1p1b1p2/4k1pp/1P1pP3/5P2/2rB4/3R1KPP/8 w - - 5 33 | Be2 | Identify any White knight outposts on the board. | d6 | outposts |
2kr1bnr/ppp2ppp/2np4/q7/3PPB2/P1N2K2/1PP1B1PP/R2Q3R b - - 0 11 | g5 | What is the material balance in this position? | Equal | material |
2r2rk1/1p2b1p1/4p2p/8/8/2nQ2P1/P4q1P/2R3K1 w - - 0 27 | b6f2 | What is the material balance in this position? | Black is up 12 pawns of material | material |
1k6/pp5p/r2n2p1/2pP4/2P2P2/PR1B4/7P/6K1 b - - 2 32 | Ra4 | Does White have any passed pawns? | Yes: d5 | structure |
rn2k1nr/pp3p1p/2p1b2b/q7/4P3/2PP2B1/P3Q2P/R2NKBNR b KQkq - 0 12 | Nd7 | What piece is on e4? | White Pawn | occupancy |
1rb2rk1/2q1bppp/p2ppn2/1pn5/3NP3/PBN1BP2/1PPQ2PP/1K1R3R w - - 9 14 | g4 | Does Black have any passed pawns? | No | structure |
rB3k2/P4pp1/2p4p/3p4/1p1P4/1Pn1P2P/2R2KP1/8 w - - 5 47 | Rxc3 | Identify any White knight outposts on the board. | None | outposts |
6k1/1p3p2/6p1/2r2nq1/1RK5/3PP3/8/3QR3 w - - 0 34 | Kxc5 | Identify any Black knight outposts on the board. | h5 | outposts |
r1bqkb1r/p1p2ppp/2p2n2/3p4/4P3/3B4/PPP2PPP/RNBQK2R w KQkq - 0 7 | e5 | Are there any open files in this position? | No | files |
r3r1k1/1b3pp1/1B5p/P1P1p1q1/8/1Q3P2/6PP/R4RK1 b - - 0 25 | Qg6 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/3K4/3B2p1/1PRn3p/4k3/8/6rP/8 w - - 2 67 | Ke6 | Is the Black king in check? | No | check |
1r4k1/1b1nr1bp/p2p2p1/2p2p2/2P5/P1N2NPP/BP3RPK/3R4 b - - 2 2 | Ne5 | Identify any White knight outposts on the board. | None | outposts |
3qr3/1b1r4/p2p1bp1/1p2p3/6k1/P2QB3/1PP3PP/5R1K b - - 9 31 | Bxg2+ | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/ppb2p1p/2p3nQ/2Pp1N2/1P3P2/4PR2/P5PP/q4NK1 w - - 4 22 | Rh3 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r1bqrbk1/1p3pp1/3p2np/p6N/1n1PP3/5N1P/5PP1/RBBQR1K1 w - - 4 23 | Bd2 | Identify any White knight outposts on the board. | d5 | outposts |
8/8/4pp1k/7p/P4Pb1/8/1qQK3P/3R4 b - - 1 35 | Qd4+ | What piece is on b2? | Black Queen | occupancy |
rnbqk2r/ppp1bppp/4pn2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 3 5 | Bg5 | Is the move from g2 to g1 legal? | No | legality |
r4rk1/2p3p1/3pp2p/np2p3/p3P1PP/P1PP4/1P1R1P2/2KN3R w - - 1 20 | Kb1 | Is the move from d2 to e2 legal? | Yes | legality |
r1bq1knr/pp3ppp/2nN4/8/1P3B2/8/1p2PPPP/R2QKB1R w KQ - 2 12 | Rb1 | Identify any White knight outposts on the board. | None | outposts |
6n1/Qb2qk1p/6p1/1NPp1p2/1P2pP2/6P1/4P2P/6K1 w - - 1 33 | Nd6+ | Identify any White knight outposts on the board. | a5, b6, d6 | outposts |
8/3k4/1p2p2p/pNp1nrp1/PnP5/3PR1PP/5NK1/8 w - - 1 53 | Na3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r1bqkb1r/pp2pp1p/3p1np1/8/2PnP3/2N5/PP2BPPP/R1BQK2R w KQkq - 0 8 | Qxd4 | Is the move from d1 to h8 legal? | No | legality |
8/1b1nkp1p/4pq2/1Br5/P2p1pQ1/5N2/1P3PPP/4R1K1 w - - 8 28 | b4 | Is the move from f3 to d2 legal? | Yes | legality |
r1bqk2r/p4ppp/2n1p3/1p1nP1N1/2pP4/2P5/3B1PPP/R2QKB1R w KQkq - 2 12 | Qh5 | What piece is on a7? | Black Pawn | occupancy |
r2qr1k1/1pp1bppp/2n5/p2bp3/Q7/P2PBNP1/1P2PPBP/R1R3K1 w - - 3 14 | Rc2 | Is the move from a4 to f4 legal? | Yes | legality |
6k1/ppK1r1pp/8/3r1p2/5N2/1P1p1P2/P4nPP/R4R2 w - - 18 34 | e8e7 | Is the White king in check? | Yes | check |
8/p5KP/1p6/3p4/5k2/2P5/PP2p3/8 w - - 0 49 | e3e2 | Identify any White knight outposts on the board. | d4 | outposts |
2r1r1k1/5ppp/bp2p1n1/p2pP1QN/q2n3P/P3B1P1/1P3P2/2R1RBK1 w - - 0 25 | Qg4 | Is the White king in check? | No | check |
r5kr/pppq1pb1/3pn1pn/4p2p/2P5/P2P1NPP/1P1BPPB1/R2QK2R w KQ - 2 15 | O-O | Identify any White knight outposts on the board. | None | outposts |
4r1k1/ppp2p1p/3bbnp1/3p4/3P4/2PB2P1/PP3PNP/R1B3K1 w - - 2 19 | f3 | Is the Black king in check? | No | check |
1rr3k1/3npp1p/p2p2p1/2Q2PP1/P1P1P3/1P5P/6B1/1R3RK1 b - - 0 27 | Nxc5 | What is the material balance in this position? | White is up 10 pawns of material | material |
r1bq1rk1/pp3pbp/2npp1n1/2p4Q/2B1P3/2N2N2/PPP3PP/R1B2RK1 b - - 2 12 | Nce5 | What piece is on f7? | Black Pawn | occupancy |
1r2r1k1/5pbp/pn1p1np1/2qP4/Ppp1PPP1/5Q1P/1PB2B2/3NRR1K b - - 2 28 | Qa5 | Does White have any isolated pawns? | No | structure |
5r2/8/1bpk2p1/1p1p4/3P1PP1/3KB3/1P6/5R2 b - - 0 54 | c5 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r7/4kppp/1ppN1n2/8/1P2P3/2n1BP2/P5PP/3R2K1 w - - 3 24 | Nf5+ | Is the move from d1 to d4 legal? | Yes | legality |
2r2rk1/pb2bppp/1p2pn2/2pqN3/3P1B2/2PB4/PP2QPPP/1K1R3R w - - 0 14 | c4 | Identify any White knight outposts on the board. | None | outposts |
r3kb1r/pp1npppp/8/3P1q2/8/2N2N2/PP3PPP/R2QK2R w KQkq - 0 14 | O-O | What piece is on e4? | Empty | occupancy |
rnb1k1nr/ppp2ppp/8/4P3/1BP4q/6P1/PP5P/RN1QKBnR b kq - 0 9 | Qe4+ | What piece is on c1? | Empty | occupancy |
8/8/K2p1k2/3P1p2/3P1p1r/8/P4R2/8 b - - 0 34 | Kg5 | Is the Black king in check? | No | check |
4N1k1/4Rppp/1qn2b2/1N2p3/4nP2/2P1BBQ1/1P4PP/5R1K b - - 0 27 | h6 | What piece is on g2? | White Pawn | occupancy |
6k1/pp5p/3p2p1/2pPb3/1n2P3/1PN3P1/PB1QP2q/4RK2 b - - 1 28 | Qh3+ | Is the move from g8 to g4 legal? | No | legality |
5r2/2Q4p/1p4b1/3qp3/3p2P1/6kP/PP1R4/6K1 b - - 3 37 | Qh1+ | What piece is on h5? | Empty | occupancy |
1rn3k1/2q1b1pp/5p2/2pPpP2/2P1B1P1/7P/3B1Q2/R5K1 b - - 0 26 | Nd6 | What is the material balance in this position? | Equal | material |
r4rk1/2pp2pp/1p6/2n2p2/1pP4q/4PP2/P2QB1PP/R4RK1 w - - 0 21 | Qxb4 | Is the move from e3 to f6 legal? | No | legality |
rnb1k1nr/ppq4p/4p1p1/2ppPp1Q/3P4/P1P5/2P2PPP/R1B1KBNR w KQkq - 0 9 | Qd1 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/7k/P1R4p/r4ppP/6P1/1K6/8/8 w - - 0 47 | Rc7+ | Is the b-file open, semi-open, or closed? | open | files |
8/1PK5/8/8/8/8/7k/6q1 w - - 0 56 | b8=Q | Identify any Black knight outposts on the board. | None | outposts |
br4rk/3nbppp/ppqp1n2/4p3/1PP1P3/PNB1QP2/1N2B1PP/2RR2K1 b - - 1 21 | g5 | Is the move from h7 to b8 legal? | No | legality |
r1bqk2r/p3bppp/2pp1n2/4p3/2B1PP2/2N1BQ2/PPP3PP/R3K2R b KQkq - 1 10 | O-O | What is the material balance in this position? | Equal | material |
rnbqkb1r/pp3ppp/2p2p2/8/3P4/8/PPP2PPP/R1BQKBNR w KQkq - 0 6 | Bc4 | Identify any White knight outposts on the board. | None | outposts |
rnbqkb1r/pp2pp2/2p3pn/3pP2p/3P1P2/2NB1N1P/PPP3P1/R1BQ1RK1 b kq - 2 9 | e6 | What piece is on a6? | Empty | occupancy |
r5qk/2p2pr1/bp1p1B2/p2Pp3/2P1P2P/5Q2/PP3PP1/R3K2R w KQ - 1 20 | Rh3 | Are there any open files in this position? | No | files |
2rr4/4kb2/5p2/pp3Pp1/3PP3/q7/PN5Q/KB5R w - - 1 37 | e5 | What piece is on b5? | Black Pawn | occupancy |
r4k2/ppp2pp1/1b5p/3rnb2/2pN1P2/1PP3B1/P2R1NPP/3R2K1 b - - 2 23 | Rxd4 | Identify any White knight outposts on the board. | None | outposts |
4r3/p5pp/8/4p3/4k3/1P6/P3R1PP/3R2K1 b - - 4 37 | d2e2 | Is the Black king in check? | Yes | check |
2k2b1r/pb1r1p2/5P2/1qnp4/Npp3Q1/4B1P1/1P3PBP/R4RK1 w - - 4 21 | Qg7 | Does Black have any passed pawns? | Yes: d5 | structure |
r3k2r/pp3p2/3p1n1p/q1pP2p1/2b5/P1N1PQB1/1P3PPP/R3K2R b KQkq - 2 15 | Ke7 | Does White have any isolated pawns? | No | structure |
2kr3r/pp1n1p1p/2pbppb1/q7/6PN/2PPB2P/PP1Q1PB1/R3K2R w KQ - 3 16 | Nxg6 | Is the move from e1 to g1 legal? | Yes | legality |
8/8/p2kp1Q1/7p/7P/P7/P4PP1/3r2K1 w - - 1 51 | d5d1 | Is the White king in check? | Yes | check |
5rk1/Q2R1pp1/4p3/3p2p1/P7/6P1/5P1P/1q3K2 w - - 9 32 | e4b1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqk1nr/ppp1bppp/8/3p4/3n4/1B2Q3/PPP2PPP/RNB1K1NR b KQkq - 1 7 | e2e3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1r3rk1/5pb1/3p2p1/7p/2Q4P/P4P2/1P4P1/5K1R b - - 0 29 | Rxb2 | Identify any White knight outposts on the board. | b4 | outposts |
4r1k1/pb2P1n1/1p1P2p1/6rq/2p1Bp2/2P2Q2/P4B2/2K2RN1 b - - 0 40 | Qxf3 | Identify any Black knight outposts on the board. | a5, c5, e3, f5, g3, h5 | outposts |
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