fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2r3k1/p4ppp/4p3/3n4/4n1P1/P2N3P/1P1BPPR1/4K3 b - - 3 25 | Rc2 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b2rk1/1pq2ppp/p3p3/6Q1/2P5/5B2/PP3PPP/R4RK1 w - - 1 17 | Rfd1 | What piece is on a3? | Empty | occupancy |
1r1q1rk1/pb3pbp/6p1/1pRB4/3pPP2/PQ1P4/1B4PP/5RK1 b - - 6 23 | Qd6 | What piece is on g6? | Black Pawn | occupancy |
5rbk/1p1P2rp/5q2/ppP2B1R/8/6N1/P2Q1PK1/8 w - - 1 42 | Kh2 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
7Q/2k1r3/5pq1/P6p/5K1P/5B2/6P1/8 b - - 0 44 | Re8 | What piece is on g5? | Empty | occupancy |
r2q2k1/pp3rpp/4Q3/4P3/8/4p2P/PP3PP1/4RRK1 w - - 0 25 | Rxe3 | Is the Black king in check? | No | check |
7r/p3b1k1/4Q3/2p1p1P1/2PnB3/6P1/P7/2B2RK1 b - - 0 39 | Nxe6 | Identify any White knight outposts on the board. | f6, h4, h6 | outposts |
2rb4/R3rk1p/5pn1/p2p4/Pp1P3P/5NB1/1P3PP1/4R1K1 w - - 7 32 | Ra6 | Does Black have any isolated pawns? | Yes: d5, f6, h7 | structure |
r2qr1k1/1pp2ppp/p2p1bn1/3P2P1/8/4B3/PPPQBP1P/2KR3R b - - 0 16 | Rxe3 | What piece is on c7? | Black Pawn | occupancy |
rn1q1rk1/pb1p1ppp/1p2pn2/3P4/1bP5/2NB4/PP2NPPP/R1BQ1RK1 b - - 0 9 | h6 | What piece is on f6? | Black Knight | occupancy |
2r4k/pq2bpp1/1p2p2p/4p3/1PP4P/PQ2P3/4rPP1/3R1RK1 w - - 6 28 | Qd3 | Is the move from h4 to f8 legal? | No | legality |
5k2/5Rp1/2r1Bp1p/5P2/8/7P/6PK/8 b - - 5 53 | a7f7 | Is the Black king in check? | Yes | check |
r4r1k/1b1pbpp1/pq2p2p/4P1N1/P7/8/1P2QPPP/1BR2RK1 w - - 4 22 | Ne4 | Does White have any isolated pawns? | No | structure |
1r4k1/1q4pp/4p3/4Pp1Q/6P1/B6P/5P2/2r3K1 w - - 0 33 | c8c1 | Is the Black king in check? | No | check |
r4rk1/p1q1p2p/2p1b1p1/3p4/5PP1/2N4P/PPP2Q2/R3K2R b KQ - 0 19 | Rxf4 | Does White have any passed pawns? | No | structure |
4b3/p3kp1R/4p3/2p1n1p1/4P3/P5r1/4K3/8 b - - 1 42 | d2e2 | What is the material balance in this position? | Black is up 9 pawns of material | material |
8/3k3p/1p1r2p1/2p1p3/p1P1PpPP/P1K2P2/8/1R6 w - - 1 49 | Rb2 | What piece is on h1? | Empty | occupancy |
8/pbr3k1/1p4R1/4Nq2/2p2P2/Q7/P5PP/6K1 b - - 2 32 | Kh7 | Is the move from g7 to h8 legal? | Yes | legality |
rnbqk2r/pp2Nppp/2p5/8/4P3/8/PB2QPPP/R3K1NR b KQkq - 0 10 | Qxe7 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/8/4pp1k/PB5p/5P2/4P3/1PK5/r7 w - - 3 36 | b4 | Is the move from a5 to d6 legal? | No | legality |
2nq1nk1/5p1p/4p1pQ/pb2P1NP/1p1Pp1P1/1P4N1/P4P2/6K1 w - - 0 29 | N3xe4 | Identify any White knight outposts on the board. | c5 | outposts |
5k2/pR3p2/7p/2r4P/5p2/8/PPP2Pr1/1K2R3 b - - 0 30 | Rxf2 | What piece is on c2? | White Pawn | occupancy |
r2qr1k1/pp1b3p/5ppB/n2P1P2/3N4/3B4/P5PP/Q4RK1 b - - 0 20 | g5 | Identify any White knight outposts on the board. | None | outposts |
8/5pk1/8/5p1p/N3p2P/bq2P1P1/R1R2P1K/8 w - - 1 42 | Nc3 | Identify any White knight outposts on the board. | h4 | outposts |
r2b1r1k/pp3p1p/n2p1p2/2q1pN2/P3P3/R7/1PP1QPPP/5BK1 b - - 7 4 | Nc7 | Are there any open files in this position? | No | files |
k7/8/3q2KP/8/8/8/1p3P2/8 w - - 1 44 | a3d6 | Is the White king in check? | Yes | check |
8/5k1p/r4P2/3P1K2/5R2/8/5P2/8 b - - 0 121 | h5 | Is the g-file open, semi-open, or closed? | open | files |
5rk1/1pp5/4p1pp/pP6/2PbP3/P1N4P/5PP1/2K4R w - - 0 21 | Nd1 | What piece is on c3? | White Knight | occupancy |
8/5P2/2k1b1P1/2qpp3/K7/1P1Q4/2p5/8 w - - 0 51 | f8=Q | Does White have any isolated pawns? | Yes: b3 | structure |
2k3r1/1p3q2/p1p5/P1Pb4/3Q1pP1/4B1K1/7R/8 w - - 0 48 | Qxf4 | Identify any White knight outposts on the board. | f5, h5 | outposts |
r1bqkb1r/pp3ppp/2p1p3/8/8/1n2Q3/PPPP1PPP/R1B1K1NR w KQkq - 0 10 | axb3 | What piece is on a3? | Empty | occupancy |
r3r3/pp6/1b3n1k/8/5P2/2PB2Pq/PP4Qn/R4K2 w - - 0 28 | f3h2 | Is the White king in check? | Yes | check |
5rk1/5p1p/6bQ/2R5/2pP4/2q5/7P/5BK1 w - - 0 37 | Qf4 | Identify any White knight outposts on the board. | c5 | outposts |
r2q1rk1/pp1n1ppp/2p2n2/2bp4/8/P1NP1BPP/1P2PP2/R1BQ1RK1 b - - 0 11 | Re8 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/pb2qp2/2p1pn1p/1p2n1p1/1bpPP3/2N3B1/PPQ1BPPP/3R1RK1 w kq - 0 14 | Bxe5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
3r2k1/pp3p1p/6p1/PP2b2n/4P2P/2PK1R2/8/8 w - - 0 29 | c8d8 | Is the White king in check? | Yes | check |
r6r/pp1k3p/5pb1/3P4/2BP4/4pP2/P5PP/R4RK1 w - - 1 22 | Rfe1 | Is the move from f1 to e1 legal? | Yes | legality |
3r4/Bp2k3/2r1p3/P4R2/8/P2P1PPP/2pn2K1/4R3 w - - 0 31 | Bc5+ | What piece is on e7? | Black King | occupancy |
8/5kp1/7p/7P/6P1/3RKP2/r7/8 b - - 8 50 | Ra4 | What is the material balance in this position? | White is up 1 pawn of material | material |
br3r1k/7p/p2pp3/N1p1b2q/2PnP3/2N1Bp1P/RP1Q1P2/R4B1K w - - 1 31 | Bxd4 | What is the material balance in this position? | White is up 2 pawns of material | material |
1r1qr1k1/p2b1ppp/1p2p3/b1pP4/P1Pn4/2N3P1/1B1P1PBP/3QRRK1 b - - 0 18 | a6 | Identify any White knight outposts on the board. | None | outposts |
1r1q1rk1/1p5p/pN1b4/P1pP1bp1/5p2/2B2Q1P/1P4P1/3R1RK1 b - - 0 24 | Qe8 | Identify any Black knight outposts on the board. | b4, d4, e3 | outposts |
2b2rk1/1pb1n2p/2P1p3/P7/4Pppr/2P2B2/2Q3PP/R4R1K b - - 0 28 | Nxc6 | What piece is on f1? | White Rook | occupancy |
8/5p2/2p1n1p1/1pPpPp2/1P1P1Pk1/5qP1/3Q1B2/5K2 b - - 16 60 | Ng7 | Is the move from g4 to a6 legal? | No | legality |
8/r3n3/2p1k1p1/q2p1p1p/3P4/pR1BP1PP/P4PK1/2Q5 w - - 10 54 | Qd1 | What piece is on a7? | Black Rook | occupancy |
8/2pk4/2ppQ3/4p3/4Pn2/P2P4/1PP3PP/5RK1 b - - 0 31 | f5e6 | Is the Black king in check? | Yes | check |
2Q5/P4ppk/7p/4P2P/8/5NP1/q4PK1/1q6 w - - 1 42 | a8=Q | Is the move from g2 to h5 legal? | No | legality |
r1bq1rk1/ppp2ppp/8/8/B2b4/3p4/PPP2PPP/R1BQ1RK1 w - - 0 12 | Qxd3 | Is the move from f2 to f3 legal? | No | legality |
rnb1k1r1/ppp1qp2/1b1p4/3Pp3/4P3/2PBB3/PP2QPPK/RN3R2 b q - 0 15 | Qh4+ | What piece is on g6? | Empty | occupancy |
2r2kr1/1p3pbp/p1n5/3R1p2/5Q2/1N6/PPP3PP/1K2qB1R w - - 2 21 | Nc1 | What piece is on d7? | Empty | occupancy |
8/p3pkbp/6p1/3B4/5P2/PP6/3KR1Pn/1q6 b - - 1 31 | b7d5 | What is the material balance in this position? | Black is up 7 pawns of material | material |
Q7/6k1/3p4/6pp/8/8/2p3K1/Rr6 b - - 2 42 | c1=Q | Identify any White knight outposts on the board. | None | outposts |
7r/p4k2/1p2p3/2p1Np2/3p1B1b/3P4/PPP2r2/2K2R2 b - - 5 37 | d7e5 | Is the Black king in check? | Yes | check |
r1b1kb1r/pp1n1ppp/1qn1p3/2ppP3/3P1P2/2P2N2/PP2N1PP/R1BQKB1R b KQkq - 0 8 | f6 | Does Black have any isolated pawns? | No | structure |
r1bq1rk1/1p3pp1/2pp1n1p/p1b5/3pP3/1PNP1NPP/P1P2PB1/R2Q1RK1 w - - 0 12 | Ne2 | Are there any open files in this position? | No | files |
5k2/3R2p1/2r5/p4p1p/2b2P1P/P1Np2P1/3K1P2/8 w - - 5 5 | Nd1 | What is the material balance in this position? | Equal | material |
r3kb1r/2q2pp1/2b1p2p/1B2P3/1p5B/1n3Q2/PPP3PP/1K1RR3 b kq - 1 21 | Na5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r6k/pp2q2p/3p2pb/PN1Pp3/1PN1Prb1/3Q4/6PP/2R1R1K1 w - - 2 24 | Rf1 | What is the material balance in this position? | Equal | material |
r1k2b1r/p1p2p2/1p2bN1p/2pnP3/5BP1/5N1P/PPP3K1/R4R2 w - - 4 19 | Kg3 | Does White have any passed pawns? | No | structure |
rn1qkbnr/ppp1pppp/8/3p1b2/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq - 2 3 | e6 | What is the material balance in this position? | Equal | material |
2kr3r/1P1b1p2/p1p1pq1p/6p1/P1pP2P1/2P2N2/1Q3PP1/1R2K2R b K - 0 22 | b6b7 | Is the White king in check? | No | check |
6kr/4R3/p7/2p3p1/8/2P3PP/P4q1K/8 w - - 0 32 | f4f2 | Is the White king in check? | Yes | check |
rnbqkb1r/ppp2ppp/5n2/3p4/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 7 | Bd3 | Are there any open files in this position? | Yes: e | files |
rnb1kb1r/pp2qppp/2pp1n2/8/5N2/2N2P2/PPPPQ1PP/R1B1KB1R b KQkq - 0 8 | g5 | Does White have any isolated pawns? | No | structure |
8/8/7b/k1NK3P/2P5/8/P7/8 b - - 0 159 | Kb6 | Are there any open files in this position? | Yes: b, d, e, f, g | files |
r1b3k1/pp3p2/5P1p/q2p4/2p4p/8/PPPRB1PP/2K2R2 w - - 2 20 | d8a5 | What is the material balance in this position? | Black is up 5 pawns of material | material |
4rrk1/6pp/p4b2/5R2/2Pp4/P6P/2PB2P1/R5K1 b - - 0 24 | d3 | Does Black have any passed pawns? | No | structure |
r3b2Q/pp3k2/5r2/3pn3/1P6/2qB4/2P2P1P/R3R2K w - - 2 30 | Qh7+ | Is the move from h1 to h2 legal? | No | legality |
1n4k1/2b5/8/1P1p2p1/PP5p/5P2/7P/5KB1 b - - 0 39 | Kf7 | Does Black have any passed pawns? | Yes: d5 | structure |
2r5/8/pr1p1k2/Rp1Ppp1p/1P5P/2P1KP2/1P6/6R1 w - - 3 37 | Rg5 | What piece is on c8? | Black Rook | occupancy |
2r3k1/6pp/5P2/3nP3/p7/P5RP/1n1B1N2/4K3 b - - 0 39 | Kf7 | Does White have any isolated pawns? | Yes: a3, h3 | structure |
1kb3r1/2q4p/5Q2/1P1P1P1p/2P1P3/7P/4B1K1/R7 w - - 1 31 | h8g8 | What is the material balance in this position? | White is up 4 pawns of material | material |
r4rk1/pp1bq1pp/4p3/3pP1P1/1P5n/5N1P/1B3P2/2RQKB1R w K - 1 21 | Nxh4 | What piece is on g5? | White Pawn | occupancy |
1rq3k1/Qb4b1/2p5/3np1N1/2B5/1P3P2/P1P5/1K4R1 b - - 2 30 | Ra8 | Does White have any passed pawns? | Yes: a2 | structure |
r1bqr1k1/bp3pp1/p6p/3p4/3PnB2/3B1N1P/PP3PP1/2RQ1RK1 b - - 0 16 | g5 | Is the move from d8 to c7 legal? | Yes | legality |
4R3/8/5KPk/p7/5P2/8/4p3/5r2 w - - 1 52 | Rh8# | Is the White king in check? | No | check |
r1bq1rk1/3n2pp/p2Qp3/3pp3/N4P1P/7R/PPP3P1/2KR1B2 b - - 1 17 | Qf6 | Is the Black king in check? | No | check |
r3r1k1/pp3pnp/1qppb3/8/2PQPR2/2NB4/PP4PP/5RK1 w - - 2 19 | Ne2 | Does Black have any isolated pawns? | Yes: f7, h7 | structure |
r1b1k2r/pp4pp/1qnbpn2/3p4/3P4/2BB1N2/PP2NPPP/R2Q1RK1 b kq - 3 13 | O-O | What piece is on b3? | Empty | occupancy |
r1b1kb1r/p1ppqppp/2p2n2/8/4P3/8/PPP1QPPP/RNB1KB1R w KQkq - 2 7 | Nc3 | What piece is on c2? | White Pawn | occupancy |
r1bqk1nr/pp1pppbp/2n3p1/2p5/2P5/5NP1/PP1PPPBP/RNBQ1RK1 b kq - 0 5 | Nh6 | Identify any Black knight outposts on the board. | None | outposts |
2r1k3/7p/p4pp1/1p2q3/8/P4PQ1/1P4PP/3R2K1 w - - 0 1 | Qxe5+ | Identify any White knight outposts on the board. | None | outposts |
2br2k1/1pQ2pp1/2p4p/8/2P4P/3q2P1/5PB1/4R1K1 w - - 0 33 | Re7 | Is the move from g2 to g6 legal? | No | legality |
r4rk1/2p2ppp/p3bn2/Pp2p3/1b2P3/N4Q1P/B2q1PP1/R3K1NR w KQ - 0 15 | d8d2 | Is the White king in check? | Yes | check |
8/8/4p3/5p2/p1pPkPp1/n1P3P1/P3K3/4B3 b - - 8 55 | Nb1 | Does White have any isolated pawns? | Yes: a2 | structure |
1r1qkb1r/p1p1nppp/3np3/1p6/4P2P/PP3NP1/5P2/R1BQKB1R w KQk - 0 21 | e5 | Is the White king in check? | No | check |
r2qr1k1/1b1n1pb1/1p1p1npp/pPp1p3/2P5/P2P1NP1/1BQ1PPBP/R2R1NK1 b - - 0 14 | Nf8 | Does Black have any passed pawns? | No | structure |
rnb1k1nr/ppp2p1p/8/3P4/1b1P1B1q/2N2Q2/PPPK2PP/R4B1R b kq - 2 9 | Ne7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2rq1rk1/1Qnnbppp/p2pp3/P7/2PP4/2N1BP1P/1P2BP2/R4RK1 w - - 1 17 | Qb3 | Does White have any passed pawns? | No | structure |
r4rk1/pp1b2pp/1q1bpn2/3pB3/1P6/2PB1N2/P4PPP/R2Q1RK1 w - - 5 15 | Qe2 | What piece is on f3? | White Knight | occupancy |
r2r4/pbq2ppk/1p2p3/7R/2PP4/1Q6/P4PPP/4R1K1 b - - 1 20 | Kg6 | Is the move from h7 to g6 legal? | Yes | legality |
8/1P1b4/R4k2/8/P7/5Pbp/4r1P1/6RK b - - 3 47 | Kf5 | Does White have any passed pawns? | Yes: a4, b7, f3 | structure |
r2q1rk1/p1pp1ppp/bpn1pn2/8/1bPPP3/2NB2N1/PP3PPP/R1BQK2R b KQ - 2 8 | e5 | Identify any Black knight outposts on the board. | None | outposts |
r2qkb1r/pbpn1pp1/1p2pn1p/3p4/8/1PNP1NP1/PBPQPPBP/2KR3R b kq - 1 9 | a6 | Does White have any passed pawns? | No | structure |
rq3rk1/p4ppp/1n2p3/8/1p1PN3/4P3/1P3PPP/2RQ1RK1 w - - 3 19 | Rc5 | What is the material balance in this position? | Equal | material |
6rk/1p4pp/p6r/1PQP3q/2B1NRb1/6P1/P6P/6K1 w - - 3 30 | h4 | Is the Black king in check? | No | check |
4r1r1/1k3p2/p7/1b1pBp2/pRq2P2/2P5/5QPP/R6K b - - 3 30 | Qd3 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
3rb1k1/p1q2ppp/B3pn2/4n3/1b2P3/1NN1BP2/1P2Q1PP/R5K1 b - - 1 19 | Bxc3 | What piece is on a1? | White Rook | occupancy |
8/8/4K2p/2k3bP/4P3/5BP1/8/8 b - - 4 58 | Kd4 | Does White have any isolated pawns? | Yes: e4 | structure |
8/2R2pkp/6p1/8/1qp3P1/5R1P/r5K1/8 w - - 4 43 | a8a2 | Is the White king in check? | Yes | check |
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