fen
stringlengths 26
72
| task_type
stringclasses 12
values | question
stringlengths 123
479
| answer
stringlengths 2
171
| source
stringclasses 2
values | messages
listlengths 2
2
|
|---|---|---|---|---|---|
6k1/4bpp1/1q2p3/p2pP1N1/3P3P/1P1Q2K1/5P2/8 b - - 0 33
|
puzzle_piece_captures
|
List all captures the piece on e7 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 6k1/4bpp1/1q2p3/p2pP1N1/3P3P/1P1Q2K1/5P2/8 b - - 0 33
Piece on: e7
Answer:
|
Bxg5
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on e7 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 6k1/4bpp1/1q2p3/p2pP1N1/3P3P/1P1Q2K1/5P2/8 b - - 0 33\nPiece on: e7\nAnswer:"
},
{
"role": "assistant",
"content": "Bxg5"
}
] |
8/8/8/2p5/8/1N6/8/8 w - - 0 1
|
toy_capture_sequence
|
Capture all black pawns with the white piece.
Respond with ONLY the move sequence in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/3p4/4p3/2N5/8/8 w - - 0 1
Position (pieces): White: Nc3 | Black: pd5, pe4
Answer: c3e4, e4d5
Position (FEN): 8/8/8/2p5/8/1N6/8/8 w - - 0 1
Position (pieces): White: Nb3 | Black: pc5
Answer:
|
b3c5
|
synthetic
|
[
{
"role": "user",
"content": "Capture all black pawns with the white piece.\nRespond with ONLY the move sequence in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/3p4/4p3/2N5/8/8 w - - 0 1\nPosition (pieces): White: Nc3 | Black: pd5, pe4\nAnswer: c3e4, e4d5\n\nPosition (FEN): 8/8/8/2p5/8/1N6/8/8 w - - 0 1\nPosition (pieces): White: Nb3 | Black: pc5\nAnswer:"
},
{
"role": "assistant",
"content": "b3c5"
}
] |
1r4k1/5ppp/1Q2p3/3p4/1p6/3PP3/5PPP/R5K1 b - - 0 31
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1r4k1/5ppp/1Q2p3/3p4/1p6/3PP3/5PPP/R5K1 b - - 0 31
Answer:
|
b8b6
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1r4k1/5ppp/1Q2p3/3p4/1p6/3PP3/5PPP/R5K1 b - - 0 31\nAnswer:"
},
{
"role": "assistant",
"content": "b8b6"
}
] |
R4rk1/2PR1ppp/8/8/7P/8/P3pqPK/8 b - - 0 33
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: R4rk1/2PR1ppp/8/8/7P/8/P3pqPK/8 b - - 0 33
Answer:
|
f8a8
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: R4rk1/2PR1ppp/8/8/7P/8/P3pqPK/8 b - - 0 33\nAnswer:"
},
{
"role": "assistant",
"content": "f8a8"
}
] |
4r1k1/pp1qr1p1/7p/2pPR3/2P2p2/1PQ2P2/P5PP/4R1K1 w - - 3 33
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 4r1k1/pp1qr1p1/7p/2pPR3/2P2p2/1PQ2P2/P5PP/4R1K1 w - - 3 33
Answer:
|
White: Kg1, Qc3, Re1, Re5, Pa2, Pb3, Pc4, Pd5, Pf3, Pg2, Ph2
Black: Kg8, Qd7, Re7, Re8, Pa7, Pb7, Pc5, Pf4, Pg7, Ph6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 4r1k1/pp1qr1p1/7p/2pPR3/2P2p2/1PQ2P2/P5PP/4R1K1 w - - 3 33\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qc3, Re1, Re5, Pa2, Pb3, Pc4, Pd5, Pf3, Pg2, Ph2\nBlack: Kg8, Qd7, Re7, Re8, Pa7, Pb7, Pc5, Pf4, Pg7, Ph6"
}
] |
5r2/4k3/2b1p3/1p1pK3/pP1P1pp1/P1P3P1/4B2P/2R5 w - - 0 65
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 5r2/4k3/2b1p3/1p1pK3/pP1P1pp1/P1P3P1/4B2P/2R5 w - - 0 65
Answer:
|
g3f4
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 5r2/4k3/2b1p3/1p1pK3/pP1P1pp1/P1P3P1/4B2P/2R5 w - - 0 65\nAnswer:"
},
{
"role": "assistant",
"content": "g3f4"
}
] |
8/8/8/p4R1p/2p1k3/P4R1P/1P2q1P1/7K w - - 4 38
|
puzzle_piece_captures
|
List all captures the piece on f5 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 8/8/8/p4R1p/2p1k3/P4R1P/1P2q1P1/7K w - - 4 38
Piece on: f5
Answer:
|
Rxh5, Rxa5
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on f5 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 8/8/8/p4R1p/2p1k3/P4R1P/1P2q1P1/7K w - - 4 38\nPiece on: f5\nAnswer:"
},
{
"role": "assistant",
"content": "Rxh5, Rxa5"
}
] |
8/5k2/7p/1R4p1/4P1K1/5P1P/1pr5/8 w - - 2 51
|
puzzle_legal_moves
|
List all legal moves for the piece on f3 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 8/5k2/7p/1R4p1/4P1K1/5P1P/1pr5/8 w - - 2 51
Piece on: f3
Answer:
|
f4
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on f3 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 8/5k2/7p/1R4p1/4P1K1/5P1P/1pr5/8 w - - 2 51\nPiece on: f3\nAnswer:"
},
{
"role": "assistant",
"content": "f4"
}
] |
3rkbnr/1pp3pp/p4p2/4N3/4b3/8/PPP2PPP/RNB1R1K1 w k - 0 11
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 3rkbnr/1pp3pp/p4p2/4N3/4b3/8/PPP2PPP/RNB1R1K1 w k - 0 11
Answer:
|
White: Kg1, Ra1, Re1, Bc1, Nb1, Ne5, Pa2, Pb2, Pc2, Pf2, Pg2, Ph2
Black: Ke8, Rd8, Rh8, Be4, Bf8, Ng8, Pa6, Pb7, Pc7, Pf6, Pg7, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 3rkbnr/1pp3pp/p4p2/4N3/4b3/8/PPP2PPP/RNB1R1K1 w k - 0 11\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Ra1, Re1, Bc1, Nb1, Ne5, Pa2, Pb2, Pc2, Pf2, Pg2, Ph2\nBlack: Ke8, Rd8, Rh8, Be4, Bf8, Ng8, Pa6, Pb7, Pc7, Pf6, Pg7, Ph7"
}
] |
rr6/Q4Rp1/k3p2q/2Bp4/P6p/7P/2P3P1/6K1 b - - 0 27
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: rr6/Q4Rp1/k3p2q/2Bp4/P6p/7P/2P3P1/6K1 b - - 0 27
Answer:
|
Rxa7
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: rr6/Q4Rp1/k3p2q/2Bp4/P6p/7P/2P3P1/6K1 b - - 0 27\nAnswer:"
},
{
"role": "assistant",
"content": "Rxa7"
}
] |
3R1rk1/pp3ppp/2p3b1/2n3P1/2B2q1P/5N2/PPP1QP2/4R1K1 b - - 0 23
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 3R1rk1/pp3ppp/2p3b1/2n3P1/2B2q1P/5N2/PPP1QP2/4R1K1 b - - 0 23
Answer:
|
White: Kg1, Qe2, Rd8, Re1, Bc4, Nf3, Pa2, Pb2, Pc2, Pf2, Pg5, Ph4
Black: Kg8, Qf4, Rf8, Bg6, Nc5, Pa7, Pb7, Pc6, Pf7, Pg7, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 3R1rk1/pp3ppp/2p3b1/2n3P1/2B2q1P/5N2/PPP1QP2/4R1K1 b - - 0 23\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qe2, Rd8, Re1, Bc4, Nf3, Pa2, Pb2, Pc2, Pf2, Pg5, Ph4\nBlack: Kg8, Qf4, Rf8, Bg6, Nc5, Pa7, Pb7, Pc6, Pf7, Pg7, Ph7"
}
] |
2Q5/3p4/8/5p2/6p1/8/8/8 w - - 0 1
|
toy_piece_list_to_fen
|
Generate the FEN for this position.
White to move, no castling rights.
Example:
Pieces: White: Ne4 | Black: pd5
Answer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Pieces: White: Qc8 | Black: pd7, pf5, pg4
Answer:
|
2Q5/3p4/8/5p2/6p1/8/8/8 w - - 0 1
|
synthetic
|
[
{
"role": "user",
"content": "Generate the FEN for this position.\nWhite to move, no castling rights.\n\nExample:\nPieces: White: Ne4 | Black: pd5\nAnswer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\n\nPieces: White: Qc8 | Black: pd7, pf5, pg4\nAnswer:"
},
{
"role": "assistant",
"content": "2Q5/3p4/8/5p2/6p1/8/8/8 w - - 0 1"
}
] |
7k/1ppq1p2/3p1n1p/p2Pp2b/P1P1P2P/3Qb3/1BB3PK/R7 w - - 0 33
|
puzzle_legal_moves
|
List all legal moves for the piece on b2 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 7k/1ppq1p2/3p1n1p/p2Pp2b/P1P1P2P/3Qb3/1BB3PK/R7 w - - 0 33
Piece on: b2
Answer:
|
Bxe5, Bd4, Bc3, Ba3, Bc1
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on b2 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 7k/1ppq1p2/3p1n1p/p2Pp2b/P1P1P2P/3Qb3/1BB3PK/R7 w - - 0 33\nPiece on: b2\nAnswer:"
},
{
"role": "assistant",
"content": "Bxe5, Bd4, Bc3, Ba3, Bc1"
}
] |
8/3k4/2Rn2p1/4pp1p/4P3/4KPPP/8/8 w - - 1 46
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 8/3k4/2Rn2p1/4pp1p/4P3/4KPPP/8/8 w - - 1 46
Answer:
|
Rxd6+, exf5
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 8/3k4/2Rn2p1/4pp1p/4P3/4KPPP/8/8 w - - 1 46\nAnswer:"
},
{
"role": "assistant",
"content": "Rxd6+, exf5"
}
] |
2kr3r/ppp2p2/3bb2p/1P4p1/P1PpNq2/3P1B2/5PPP/R2Q1RK1 w - - 2 18
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 2kr3r/ppp2p2/3bb2p/1P4p1/P1PpNq2/3P1B2/5PPP/R2Q1RK1 w - - 2 18
Answer:
|
Nxd6+, Nxg5
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 2kr3r/ppp2p2/3bb2p/1P4p1/P1PpNq2/3P1B2/5PPP/R2Q1RK1 w - - 2 18\nAnswer:"
},
{
"role": "assistant",
"content": "Nxd6+, Nxg5"
}
] |
3Q4/5pk1/5P2/4K2p/P2P4/2q1p3/5r2/8 b - - 0 52
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3Q4/5pk1/5P2/4K2p/P2P4/2q1p3/5r2/8 b - - 0 52
Output:
|
. . . Q . . . .
. . . . . p k .
. . . . . P . .
. . . . K . . p
P . . P . . . .
. . q . p . . .
. . . . . r . .
. . . . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3Q4/5pk1/5P2/4K2p/P2P4/2q1p3/5r2/8 b - - 0 52\nOutput:"
},
{
"role": "assistant",
"content": ". . . Q . . . .\n. . . . . p k .\n. . . . . P . .\n. . . . K . . p\nP . . P . . . .\n. . q . p . . .\n. . . . . r . .\n. . . . . . . ."
}
] |
8/8/5p2/6p1/5p1Q/8/8/8 w - - 0 1
|
toy_piece_list_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Position (pieces): White: Qh4 | Black: pf4, pf6, pg5
Answer:
|
h4e1, h4f2, h4f4, h4g3, h4g4, h4g5, h4h1, h4h2, h4h3, h4h5, h4h6, h4h7, h4h8
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nPosition (pieces): White: Qh4 | Black: pf4, pf6, pg5\nAnswer:"
},
{
"role": "assistant",
"content": "h4e1, h4f2, h4f4, h4g3, h4g4, h4g5, h4h1, h4h2, h4h3, h4h5, h4h6, h4h7, h4h8"
}
] |
4k1r1/2pN3Q/pq3r2/1p6/1P6/P2B3P/7K/3b4 w - - 22 44
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 4k1r1/2pN3Q/pq3r2/1p6/1P6/P2B3P/7K/3b4 w - - 22 44
Answer:
|
Qxg8+, Nxf6+, Nxb6, Bxb5
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 4k1r1/2pN3Q/pq3r2/1p6/1P6/P2B3P/7K/3b4 w - - 22 44\nAnswer:"
},
{
"role": "assistant",
"content": "Qxg8+, Nxf6+, Nxb6, Bxb5"
}
] |
1r2kbnr/3b1ppp/pq1pp3/8/2pNPPP1/P1N1B3/1PPQ3P/2KR3R w k - 1 14
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1r2kbnr/3b1ppp/pq1pp3/8/2pNPPP1/P1N1B3/1PPQ3P/2KR3R w k - 1 14
Answer:
|
f4f5
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1r2kbnr/3b1ppp/pq1pp3/8/2pNPPP1/P1N1B3/1PPQ3P/2KR3R w k - 1 14\nAnswer:"
},
{
"role": "assistant",
"content": "f4f5"
}
] |
r2q2k1/5ppp/p2B4/2p5/1p1n4/6Q1/PPP3PP/2K4R w - - 1 22
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: r2q2k1/5ppp/p2B4/2p5/1p1n4/6Q1/PPP3PP/2K4R w - - 1 22
Answer:
|
Bxc5, Qxg7+
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: r2q2k1/5ppp/p2B4/2p5/1p1n4/6Q1/PPP3PP/2K4R w - - 1 22\nAnswer:"
},
{
"role": "assistant",
"content": "Bxc5, Qxg7+"
}
] |
8/3K1kp1/7p/4Pn1P/4N3/8/8/8 b - - 4 51
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 8/3K1kp1/7p/4Pn1P/4N3/8/8/8 b - - 4 51
Output:
|
. . . . . . . .
. . . K . k p .
. . . . . . . p
. . . . P n . P
. . . . N . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 8/3K1kp1/7p/4Pn1P/4N3/8/8/8 b - - 4 51\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . .\n. . . K . k p .\n. . . . . . . p\n. . . . P n . P\n. . . . N . . .\n. . . . . . . .\n. . . . . . . .\n. . . . . . . ."
}
] |
r2qk1nr/pbpp1pbp/1p2p1p1/3Pn3/2P1P3/3B1N2/PP3PPP/RNBQ1RK1 w kq - 0 8
|
puzzle_legal_moves
|
List all legal moves for the piece on f1 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r2qk1nr/pbpp1pbp/1p2p1p1/3Pn3/2P1P3/3B1N2/PP3PPP/RNBQ1RK1 w kq - 0 8
Piece on: f1
Answer:
|
Re1
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on f1 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r2qk1nr/pbpp1pbp/1p2p1p1/3Pn3/2P1P3/3B1N2/PP3PPP/RNBQ1RK1 w kq - 0 8\nPiece on: f1\nAnswer:"
},
{
"role": "assistant",
"content": "Re1"
}
] |
8/1p6/8/8/8/8/8/7Q w - - 0 1
|
toy_fen_to_piece_list
|
List all pieces from this FEN position.
Format: "White: pieces | Black: pieces" using piece symbol + square (e.g., Ne4, pd5).
Uppercase for White, lowercase for Black.
Example:
FEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Answer: White: Ne4 | Black: pd5
FEN: 8/1p6/8/8/8/8/8/7Q w - - 0 1
Answer:
|
White: Qh1 | Black: pb7
|
synthetic
|
[
{
"role": "user",
"content": "List all pieces from this FEN position.\nFormat: \"White: pieces | Black: pieces\" using piece symbol + square (e.g., Ne4, pd5).\nUppercase for White, lowercase for Black.\n\nExample:\nFEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\nAnswer: White: Ne4 | Black: pd5\n\nFEN: 8/1p6/8/8/8/8/8/7Q w - - 0 1\nAnswer:"
},
{
"role": "assistant",
"content": "White: Qh1 | Black: pb7"
}
] |
1r4k1/1pp4p/p2p2p1/8/4r3/2b2B1P/P1P4P/1R3RK1 b - - 1 22
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1r4k1/1pp4p/p2p2p1/8/4r3/2b2B1P/P1P4P/1R3RK1 b - - 1 22
Answer:
|
e4c4
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1r4k1/1pp4p/p2p2p1/8/4r3/2b2B1P/P1P4P/1R3RK1 b - - 1 22\nAnswer:"
},
{
"role": "assistant",
"content": "e4c4"
}
] |
8/3b1Npk/p7/3p3p/8/6P1/1P4KP/8 b - - 1 38
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 8/3b1Npk/p7/3p3p/8/6P1/1P4KP/8 b - - 1 38
Answer:
|
d7e6
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 8/3b1Npk/p7/3p3p/8/6P1/1P4KP/8 b - - 1 38\nAnswer:"
},
{
"role": "assistant",
"content": "d7e6"
}
] |
8/8/p1k3p1/P1P2p2/2K3Pp/7P/8/8 w - - 0 51
|
puzzle_piece_captures
|
List all captures the piece on g4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 8/8/p1k3p1/P1P2p2/2K3Pp/7P/8/8 w - - 0 51
Piece on: g4
Answer:
|
gxf5
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on g4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 8/8/p1k3p1/P1P2p2/2K3Pp/7P/8/8 w - - 0 51\nPiece on: g4\nAnswer:"
},
{
"role": "assistant",
"content": "gxf5"
}
] |
8/7R/8/7p/7p/8/7p/8 w - - 0 1
|
toy_piece_list_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Position (pieces): White: Rh7 | Black: ph2, ph4, ph5
Answer:
|
h7a7, h7b7, h7c7, h7d7, h7e7, h7f7, h7g7, h7h5, h7h6, h7h8
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nPosition (pieces): White: Rh7 | Black: ph2, ph4, ph5\nAnswer:"
},
{
"role": "assistant",
"content": "h7a7, h7b7, h7c7, h7d7, h7e7, h7f7, h7g7, h7h5, h7h6, h7h8"
}
] |
8/B7/1p6/8/8/4p3/5p2/8 w - - 0 1
|
toy_capture_sequence
|
Capture all black pawns with the white piece.
Respond with ONLY the move sequence in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/3p4/4p3/2N5/8/8 w - - 0 1
Position (pieces): White: Nc3 | Black: pd5, pe4
Answer: c3e4, e4d5
Position (FEN): 8/B7/1p6/8/8/4p3/5p2/8 w - - 0 1
Position (pieces): White: Ba7 | Black: pb6, pe3, pf2
Answer:
|
a7b6, b6e3, e3f2
|
synthetic
|
[
{
"role": "user",
"content": "Capture all black pawns with the white piece.\nRespond with ONLY the move sequence in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/3p4/4p3/2N5/8/8 w - - 0 1\nPosition (pieces): White: Nc3 | Black: pd5, pe4\nAnswer: c3e4, e4d5\n\nPosition (FEN): 8/B7/1p6/8/8/4p3/5p2/8 w - - 0 1\nPosition (pieces): White: Ba7 | Black: pb6, pe3, pf2\nAnswer:"
},
{
"role": "assistant",
"content": "a7b6, b6e3, e3f2"
}
] |
8/8/8/1B6/8/8/8/8 w - - 0 1
|
toy_fen_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1
Position (pieces): White: Ne4 | Black:
Answer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5
Position (FEN): 8/8/8/1B6/8/8/8/8 w - - 0 1
Position (pieces): White: Bb5 | Black:
Answer:
|
b5a4, b5a6, b5c4, b5c6, b5d3, b5d7, b5e2, b5e8, b5f1
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1\nPosition (pieces): White: Ne4 | Black:\nAnswer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5\n\nPosition (FEN): 8/8/8/1B6/8/8/8/8 w - - 0 1\nPosition (pieces): White: Bb5 | Black: \nAnswer:"
},
{
"role": "assistant",
"content": "b5a4, b5a6, b5c4, b5c6, b5d3, b5d7, b5e2, b5e8, b5f1"
}
] |
8/8/8/4Q3/8/8/8/8 w - - 0 1
|
toy_movement_path
|
Move the piece to reach the target square using the shortest path.
Respond with ONLY the move sequence in UCI notation, comma-separated.
Example:
Position: White: Na1 |
Move from a1 to c5
Answer: a1b3, b3c5
Position: White: Qe5 | Black:
Move from e5 to e1
Answer:
|
e5e1
|
synthetic
|
[
{
"role": "user",
"content": "Move the piece to reach the target square using the shortest path.\nRespond with ONLY the move sequence in UCI notation, comma-separated.\n\nExample:\nPosition: White: Na1 |\nMove from a1 to c5\nAnswer: a1b3, b3c5\n\nPosition: White: Qe5 | Black: \nMove from e5 to e1\nAnswer:"
},
{
"role": "assistant",
"content": "e5e1"
}
] |
2kr1b1r/pbp5/1pn1q1pp/3p1p2/3P4/P1P1BQ1B/1P3P1P/R3K1R1 b Q - 1 18
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 2kr1b1r/pbp5/1pn1q1pp/3p1p2/3P4/P1P1BQ1B/1P3P1P/R3K1R1 b Q - 1 18
Answer:
|
Bxa3, Qxe3+, Nxd4
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 2kr1b1r/pbp5/1pn1q1pp/3p1p2/3P4/P1P1BQ1B/1P3P1P/R3K1R1 b Q - 1 18\nAnswer:"
},
{
"role": "assistant",
"content": "Bxa3, Qxe3+, Nxd4"
}
] |
1k1r4/1p3Qp1/p2q3p/3N4/1b6/8/PP3PPP/2R3K1 w - - 4 22
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 1k1r4/1p3Qp1/p2q3p/3N4/1b6/8/PP3PPP/2R3K1 w - - 4 22
Answer:
|
White: Kg1, Qf7, Rc1, Nd5, Pa2, Pb2, Pf2, Pg2, Ph2
Black: Kb8, Qd6, Rd8, Bb4, Pa6, Pb7, Pg7, Ph6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 1k1r4/1p3Qp1/p2q3p/3N4/1b6/8/PP3PPP/2R3K1 w - - 4 22\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qf7, Rc1, Nd5, Pa2, Pb2, Pf2, Pg2, Ph2\nBlack: Kb8, Qd6, Rd8, Bb4, Pa6, Pb7, Pg7, Ph6"
}
] |
r2q1rk1/pp1bbpp1/3p1n1p/2p5/2B1P2B/2NQ4/PPP2PPP/R4RK1 w - - 2 12
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r2q1rk1/pp1bbpp1/3p1n1p/2p5/2B1P2B/2NQ4/PPP2PPP/R4RK1 w - - 2 12
Output:
|
r . . q . r k .
p p . b b p p .
. . . p . n . p
. . p . . . . .
. . B . P . . B
. . N Q . . . .
P P P . . P P P
R . . . . R K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r2q1rk1/pp1bbpp1/3p1n1p/2p5/2B1P2B/2NQ4/PPP2PPP/R4RK1 w - - 2 12\nOutput:"
},
{
"role": "assistant",
"content": "r . . q . r k .\np p . b b p p .\n. . . p . n . p\n. . p . . . . .\n. . B . P . . B\n. . N Q . . . .\nP P P . . P P P\nR . . . . R K ."
}
] |
8/8/8/8/1B6/8/8/8 w - - 0 1
|
toy_piece_list_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Position (pieces): White: Bb4 | Black:
Answer:
|
b4a3, b4a5, b4c3, b4c5, b4d2, b4d6, b4e1, b4e7, b4f8
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nPosition (pieces): White: Bb4 | Black: \nAnswer:"
},
{
"role": "assistant",
"content": "b4a3, b4a5, b4c3, b4c5, b4d2, b4d6, b4e1, b4e7, b4f8"
}
] |
7k/1p1rp1bp/pB4p1/4rp2/P7/2P1Q2P/1P3PP1/4R1K1 w - - 0 34
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 7k/1p1rp1bp/pB4p1/4rp2/P7/2P1Q2P/1P3PP1/4R1K1 w - - 0 34
Answer:
|
White: Kg1, Qe3, Re1, Bb6, Pa4, Pb2, Pc3, Pf2, Pg2, Ph3
Black: Kh8, Rd7, Re5, Bg7, Pa6, Pb7, Pe7, Pf5, Pg6, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 7k/1p1rp1bp/pB4p1/4rp2/P7/2P1Q2P/1P3PP1/4R1K1 w - - 0 34\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qe3, Re1, Bb6, Pa4, Pb2, Pc3, Pf2, Pg2, Ph3\nBlack: Kh8, Rd7, Re5, Bg7, Pa6, Pb7, Pe7, Pf5, Pg6, Ph7"
}
] |
8/8/8/8/8/8/4Q3/8 w - - 0 1
|
toy_fen_to_piece_list
|
List all pieces from this FEN position.
Format: "White: pieces | Black: pieces" using piece symbol + square (e.g., Ne4, pd5).
Uppercase for White, lowercase for Black.
Example:
FEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Answer: White: Ne4 | Black: pd5
FEN: 8/8/8/8/8/8/4Q3/8 w - - 0 1
Answer:
|
White: Qe2 | Black:
|
synthetic
|
[
{
"role": "user",
"content": "List all pieces from this FEN position.\nFormat: \"White: pieces | Black: pieces\" using piece symbol + square (e.g., Ne4, pd5).\nUppercase for White, lowercase for Black.\n\nExample:\nFEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\nAnswer: White: Ne4 | Black: pd5\n\nFEN: 8/8/8/8/8/8/4Q3/8 w - - 0 1\nAnswer:"
},
{
"role": "assistant",
"content": "White: Qe2 | Black: "
}
] |
rnbqk2r/pp3ppp/5n2/3pN3/2B5/2P5/P1PPQPPP/R1B1K2R b KQkq - 1 8
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: rnbqk2r/pp3ppp/5n2/3pN3/2B5/2P5/P1PPQPPP/R1B1K2R b KQkq - 1 8
Answer:
|
d5c4
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: rnbqk2r/pp3ppp/5n2/3pN3/2B5/2P5/P1PPQPPP/R1B1K2R b KQkq - 1 8\nAnswer:"
},
{
"role": "assistant",
"content": "d5c4"
}
] |
3r4/p4ppk/2q4p/2NpPb2/1P1Q4/2P2P2/P6P/3R3K w - - 11 41
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3r4/p4ppk/2q4p/2NpPb2/1P1Q4/2P2P2/P6P/3R3K w - - 11 41
Output:
|
. . . r . . . .
p . . . . p p k
. . q . . . . p
. . N p P b . .
. P . Q . . . .
. . P . . P . .
P . . . . . . P
. . . R . . . K
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3r4/p4ppk/2q4p/2NpPb2/1P1Q4/2P2P2/P6P/3R3K w - - 11 41\nOutput:"
},
{
"role": "assistant",
"content": ". . . r . . . .\np . . . . p p k\n. . q . . . . p\n. . N p P b . .\n. P . Q . . . .\n. . P . . P . .\nP . . . . . . P\n. . . R . . . K"
}
] |
8/p1P4R/1brB4/1P1pp3/4k3/P7/K7/8 b - - 0 49
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 8/p1P4R/1brB4/1P1pp3/4k3/P7/K7/8 b - - 0 49
Answer:
|
Rxc7, Rxd6, Bxc7
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 8/p1P4R/1brB4/1P1pp3/4k3/P7/K7/8 b - - 0 49\nAnswer:"
},
{
"role": "assistant",
"content": "Rxc7, Rxd6, Bxc7"
}
] |
1r1q1rk1/1b4b1/4p1pp/3pP3/p2B2P1/3B3Q/PPP5/2KR3R w - - 0 23
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 1r1q1rk1/1b4b1/4p1pp/3pP3/p2B2P1/3B3Q/PPP5/2KR3R w - - 0 23
Answer:
|
Qxh6, Bxg6
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 1r1q1rk1/1b4b1/4p1pp/3pP3/p2B2P1/3B3Q/PPP5/2KR3R w - - 0 23\nAnswer:"
},
{
"role": "assistant",
"content": "Qxh6, Bxg6"
}
] |
4r2k/pp4pp/2pBr1q1/2P5/1P2PQ2/Pb3P2/4R1PP/4R1K1 w - - 5 32
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 4r2k/pp4pp/2pBr1q1/2P5/1P2PQ2/Pb3P2/4R1PP/4R1K1 w - - 5 32
Output:
|
. . . . r . . k
p p . . . . p p
. . p B r . q .
. . P . . . . .
. P . . P Q . .
P b . . . P . .
. . . . R . P P
. . . . R . K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 4r2k/pp4pp/2pBr1q1/2P5/1P2PQ2/Pb3P2/4R1PP/4R1K1 w - - 5 32\nOutput:"
},
{
"role": "assistant",
"content": ". . . . r . . k\np p . . . . p p\n. . p B r . q .\n. . P . . . . .\n. P . . P Q . .\nP b . . . P . .\n. . . . R . P P\n. . . . R . K ."
}
] |
7r/ppp1Nk1p/2n5/8/8/2P2pP1/P6P/R1Br1BK1 b - - 0 20
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 7r/ppp1Nk1p/2n5/8/8/2P2pP1/P6P/R1Br1BK1 b - - 0 20
Answer:
|
Kxe7, Nxe7, Rxf1+, Rxc1
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 7r/ppp1Nk1p/2n5/8/8/2P2pP1/P6P/R1Br1BK1 b - - 0 20\nAnswer:"
},
{
"role": "assistant",
"content": "Kxe7, Nxe7, Rxf1+, Rxc1"
}
] |
7r/1p6/2p3R1/2PpR3/5b1k/6P1/p4P1K/8 b - - 0 39
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 7r/1p6/2p3R1/2PpR3/5b1k/6P1/p4P1K/8 b - - 0 39
Output:
|
. . . . . . . r
. p . . . . . .
. . p . . . R .
. . P p R . . .
. . . . . b . k
. . . . . . P .
p . . . . P . K
. . . . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 7r/1p6/2p3R1/2PpR3/5b1k/6P1/p4P1K/8 b - - 0 39\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . r\n. p . . . . . .\n. . p . . . R .\n. . P p R . . .\n. . . . . b . k\n. . . . . . P .\np . . . . P . K\n. . . . . . . ."
}
] |
6R1/4k2P/8/8/2pB4/2P5/p6r/2K5 w - - 2 51
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 6R1/4k2P/8/8/2pB4/2P5/p6r/2K5 w - - 2 51
Output:
|
. . . . . . R .
. . . . k . . P
. . . . . . . .
. . . . . . . .
. . p B . . . .
. . P . . . . .
p . . . . . . r
. . K . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 6R1/4k2P/8/8/2pB4/2P5/p6r/2K5 w - - 2 51\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . R .\n. . . . k . . P\n. . . . . . . .\n. . . . . . . .\n. . p B . . . .\n. . P . . . . .\np . . . . . . r\n. . K . . . . ."
}
] |
r2q1rk1/ppp2ppp/2n5/3p2N1/3P4/1B5P/P1Q1bPP1/R1B2RK1 b - - 2 16
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r2q1rk1/ppp2ppp/2n5/3p2N1/3P4/1B5P/P1Q1bPP1/R1B2RK1 b - - 2 16
Output:
|
r . . q . r k .
p p p . . p p p
. . n . . . . .
. . . p . . N .
. . . P . . . .
. B . . . . . P
P . Q . b P P .
R . B . . R K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r2q1rk1/ppp2ppp/2n5/3p2N1/3P4/1B5P/P1Q1bPP1/R1B2RK1 b - - 2 16\nOutput:"
},
{
"role": "assistant",
"content": "r . . q . r k .\np p p . . p p p\n. . n . . . . .\n. . . p . . N .\n. . . P . . . .\n. B . . . . . P\nP . Q . b P P .\nR . B . . R K ."
}
] |
7r/p1Q2k1p/1p4p1/2pq1r2/3p4/2PP4/PP3P1P/4RRK1 b - - 4 24
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 7r/p1Q2k1p/1p4p1/2pq1r2/3p4/2PP4/PP3P1P/4RRK1 b - - 4 24
Answer:
|
White: Kg1, Qc7, Re1, Rf1, Pa2, Pb2, Pc3, Pd3, Pf2, Ph2
Black: Kf7, Qd5, Rf5, Rh8, Pa7, Pb6, Pc5, Pd4, Pg6, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 7r/p1Q2k1p/1p4p1/2pq1r2/3p4/2PP4/PP3P1P/4RRK1 b - - 4 24\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qc7, Re1, Rf1, Pa2, Pb2, Pc3, Pd3, Pf2, Ph2\nBlack: Kf7, Qd5, Rf5, Rh8, Pa7, Pb6, Pc5, Pd4, Pg6, Ph7"
}
] |
5r1k/6p1/1Q2pq1p/P4r2/3P4/2P1R3/6PP/4R1K1 w - - 1 39
|
puzzle_piece_captures
|
List all captures the piece on e3 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 5r1k/6p1/1Q2pq1p/P4r2/3P4/2P1R3/6PP/4R1K1 w - - 1 39
Piece on: e3
Answer:
|
Rxe6
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on e3 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 5r1k/6p1/1Q2pq1p/P4r2/3P4/2P1R3/6PP/4R1K1 w - - 1 39\nPiece on: e3\nAnswer:"
},
{
"role": "assistant",
"content": "Rxe6"
}
] |
3Q4/p5pk/1p5p/8/3P4/4p3/Pr4PP/6K1 w - - 2 39
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3Q4/p5pk/1p5p/8/3P4/4p3/Pr4PP/6K1 w - - 2 39
Output:
|
. . . Q . . . .
p . . . . . p k
. p . . . . . p
. . . . . . . .
. . . P . . . .
. . . . p . . .
P r . . . . P P
. . . . . . K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3Q4/p5pk/1p5p/8/3P4/4p3/Pr4PP/6K1 w - - 2 39\nOutput:"
},
{
"role": "assistant",
"content": ". . . Q . . . .\np . . . . . p k\n. p . . . . . p\n. . . . . . . .\n. . . P . . . .\n. . . . p . . .\nP r . . . . P P\n. . . . . . K ."
}
] |
rn3rk1/ppp2ppp/4q3/8/4Pn1B/2P1b3/PPQNBPPP/R3K2R w KQ - 0 14
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: rn3rk1/ppp2ppp/4q3/8/4Pn1B/2P1b3/PPQNBPPP/R3K2R w KQ - 0 14
Output:
|
r n . . . r k .
p p p . . p p p
. . . . q . . .
. . . . . . . .
. . . . P n . B
. . P . b . . .
P P Q N B P P P
R . . . K . . R
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: rn3rk1/ppp2ppp/4q3/8/4Pn1B/2P1b3/PPQNBPPP/R3K2R w KQ - 0 14\nOutput:"
},
{
"role": "assistant",
"content": "r n . . . r k .\np p p . . p p p\n. . . . q . . .\n. . . . . . . .\n. . . . P n . B\n. . P . b . . .\nP P Q N B P P P\nR . . . K . . R"
}
] |
r3kb1r/1p3p2/p2p4/3QpPB1/P5P1/5P2/1Pq5/R4RK1 w kq - 0 22
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r3kb1r/1p3p2/p2p4/3QpPB1/P5P1/5P2/1Pq5/R4RK1 w kq - 0 22
Output:
|
r . . . k b . r
. p . . . p . .
p . . p . . . .
. . . Q p P B .
P . . . . . P .
. . . . . P . .
. P q . . . . .
R . . . . R K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r3kb1r/1p3p2/p2p4/3QpPB1/P5P1/5P2/1Pq5/R4RK1 w kq - 0 22\nOutput:"
},
{
"role": "assistant",
"content": "r . . . k b . r\n. p . . . p . .\np . . p . . . .\n. . . Q p P B .\nP . . . . . P .\n. . . . . P . .\n. P q . . . . .\nR . . . . R K ."
}
] |
8/r7/pkq1p1r1/R2pPp2/RPpP1Qp1/2P3Pp/4KP1P/8 w - - 1 44
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 8/r7/pkq1p1r1/R2pPp2/RPpP1Qp1/2P3Pp/4KP1P/8 w - - 1 44
Output:
|
. . . . . . . .
r . . . . . . .
p k q . p . r .
R . . p P p . .
R P p P . Q p .
. . P . . . P p
. . . . K P . P
. . . . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 8/r7/pkq1p1r1/R2pPp2/RPpP1Qp1/2P3Pp/4KP1P/8 w - - 1 44\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . .\nr . . . . . . .\np k q . p . r .\nR . . p P p . .\nR P p P . Q p .\n. . P . . . P p\n. . . . K P . P\n. . . . . . . ."
}
] |
8/p4k2/b2P4/3N2p1/4p3/2K4P/8/8 b - - 1 45
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 8/p4k2/b2P4/3N2p1/4p3/2K4P/8/8 b - - 1 45
Answer:
|
a6b7
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 8/p4k2/b2P4/3N2p1/4p3/2K4P/8/8 b - - 1 45\nAnswer:"
},
{
"role": "assistant",
"content": "a6b7"
}
] |
8/8/8/8/8/8/6Q1/8 w - - 0 1
|
toy_piece_list_to_fen
|
Generate the FEN for this position.
White to move, no castling rights.
Example:
Pieces: White: Ne4 | Black: pd5
Answer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Pieces: White: Qg2 | Black:
Answer:
|
8/8/8/8/8/8/6Q1/8 w - - 0 1
|
synthetic
|
[
{
"role": "user",
"content": "Generate the FEN for this position.\nWhite to move, no castling rights.\n\nExample:\nPieces: White: Ne4 | Black: pd5\nAnswer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\n\nPieces: White: Qg2 | Black: \nAnswer:"
},
{
"role": "assistant",
"content": "8/8/8/8/8/8/6Q1/8 w - - 0 1"
}
] |
1k6/8/8/6p1/1pp5/p4PP1/N1P4P/7K w - - 0 38
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 1k6/8/8/6p1/1pp5/p4PP1/N1P4P/7K w - - 0 38
Answer:
|
Nxb4
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 1k6/8/8/6p1/1pp5/p4PP1/N1P4P/7K w - - 0 38\nAnswer:"
},
{
"role": "assistant",
"content": "Nxb4"
}
] |
8/8/1R3pkp/1pP5/1P3PKP/r7/8/8 w - - 2 48
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/8/1R3pkp/1pP5/1P3PKP/r7/8/8 w - - 2 48
Answer:
|
White: Kg4, Rb6, Pb4, Pc5, Pf4, Ph4
Black: Kg6, Ra3, Pb5, Pf6, Ph6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/8/1R3pkp/1pP5/1P3PKP/r7/8/8 w - - 2 48\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg4, Rb6, Pb4, Pc5, Pf4, Ph4\nBlack: Kg6, Ra3, Pb5, Pf6, Ph6"
}
] |
2k5/8/8/3N1P1r/4K3/8/1p6/1Rb5 b - - 0 50
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 2k5/8/8/3N1P1r/4K3/8/1p6/1Rb5 b - - 0 50
Output:
|
. . k . . . . .
. . . . . . . .
. . . . . . . .
. . . N . P . r
. . . . K . . .
. . . . . . . .
. p . . . . . .
. R b . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 2k5/8/8/3N1P1r/4K3/8/1p6/1Rb5 b - - 0 50\nOutput:"
},
{
"role": "assistant",
"content": ". . k . . . . .\n. . . . . . . .\n. . . . . . . .\n. . . N . P . r\n. . . . K . . .\n. . . . . . . .\n. p . . . . . .\n. R b . . . . ."
}
] |
r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15
|
puzzle_legal_moves
|
List all legal moves for the piece on f6 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15
Piece on: f6
Answer:
|
Nxh7
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on f6 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15\nPiece on: f6\nAnswer:"
},
{
"role": "assistant",
"content": "Nxh7"
}
] |
2r5/3Qnk1p/8/4B2b/Pp2p3/1P2P3/5PPP/3R2K1 w - - 3 32
|
puzzle_piece_captures
|
List all captures the piece on d7 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 2r5/3Qnk1p/8/4B2b/Pp2p3/1P2P3/5PPP/3R2K1 w - - 3 32
Piece on: d7
Answer:
|
Qxc8, Qxe7+
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on d7 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 2r5/3Qnk1p/8/4B2b/Pp2p3/1P2P3/5PPP/3R2K1 w - - 3 32\nPiece on: d7\nAnswer:"
},
{
"role": "assistant",
"content": "Qxc8, Qxe7+"
}
] |
r1bk3r/ppp1np1p/3p2pP/1N2P1q1/2BP1n2/8/PPP3P1/R1BQ2KR w - - 1 14
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r1bk3r/ppp1np1p/3p2pP/1N2P1q1/2BP1n2/8/PPP3P1/R1BQ2KR w - - 1 14
Answer:
|
White: Kg1, Qd1, Ra1, Rh1, Bc1, Bc4, Nb5, Pa2, Pb2, Pc2, Pd4, Pe5, Pg2, Ph6
Black: Kd8, Qg5, Ra8, Rh8, Bc8, Ne7, Nf4, Pa7, Pb7, Pc7, Pd6, Pf7, Pg6, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r1bk3r/ppp1np1p/3p2pP/1N2P1q1/2BP1n2/8/PPP3P1/R1BQ2KR w - - 1 14\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qd1, Ra1, Rh1, Bc1, Bc4, Nb5, Pa2, Pb2, Pc2, Pd4, Pe5, Pg2, Ph6\nBlack: Kd8, Qg5, Ra8, Rh8, Bc8, Ne7, Nf4, Pa7, Pb7, Pc7, Pd6, Pf7, Pg6, Ph7"
}
] |
2rr4/4kp2/p3p2q/1p3nNP/3PQP2/P1N5/1P3K2/6R1 b - - 0 34
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 2rr4/4kp2/p3p2q/1p3nNP/3PQP2/P1N5/1P3K2/6R1 b - - 0 34
Output:
|
. . r r . . . .
. . . . k p . .
p . . . p . . q
. p . . . n N P
. . . P Q P . .
P . N . . . . .
. P . . . K . .
. . . . . . R .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 2rr4/4kp2/p3p2q/1p3nNP/3PQP2/P1N5/1P3K2/6R1 b - - 0 34\nOutput:"
},
{
"role": "assistant",
"content": ". . r r . . . .\n. . . . k p . .\np . . . p . . q\n. p . . . n N P\n. . . P Q P . .\nP . N . . . . .\n. P . . . K . .\n. . . . . . R ."
}
] |
1r3k2/1p1q1p2/p2p1np1/2pP2bp/2P1P1n1/1PQ3P1/P3N1K1/3N1R1R b - - 11 28
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1r3k2/1p1q1p2/p2p1np1/2pP2bp/2P1P1n1/1PQ3P1/P3N1K1/3N1R1R b - - 11 28
Answer:
|
f6e4
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1r3k2/1p1q1p2/p2p1np1/2pP2bp/2P1P1n1/1PQ3P1/P3N1K1/3N1R1R b - - 11 28\nAnswer:"
},
{
"role": "assistant",
"content": "f6e4"
}
] |
5k2/p3pp2/7p/2Qp1P2/6B1/6q1/2K5/8 b - - 2 43
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 5k2/p3pp2/7p/2Qp1P2/6B1/6q1/2K5/8 b - - 2 43
Output:
|
. . . . . k . .
p . . . p p . .
. . . . . . . p
. . Q p . P . .
. . . . . . B .
. . . . . . q .
. . K . . . . .
. . . . . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 5k2/p3pp2/7p/2Qp1P2/6B1/6q1/2K5/8 b - - 2 43\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . k . .\np . . . p p . .\n. . . . . . . p\n. . Q p . P . .\n. . . . . . B .\n. . . . . . q .\n. . K . . . . .\n. . . . . . . ."
}
] |
7B/8/5p2/4p3/8/2p5/8/8 w - - 0 1
|
toy_fen_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1
Position (pieces): White: Ne4 | Black:
Answer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5
Position (FEN): 7B/8/5p2/4p3/8/2p5/8/8 w - - 0 1
Position (pieces): White: Bh8 | Black: pc3, pe5, pf6
Answer:
|
h8f6, h8g7
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1\nPosition (pieces): White: Ne4 | Black:\nAnswer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5\n\nPosition (FEN): 7B/8/5p2/4p3/8/2p5/8/8 w - - 0 1\nPosition (pieces): White: Bh8 | Black: pc3, pe5, pf6\nAnswer:"
},
{
"role": "assistant",
"content": "h8f6, h8g7"
}
] |
6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37
Answer:
|
White: Kg1, Qa6, Re1, Pa3, Pf2, Pg3, Ph4
Black: Kg8, Qf5, Rd4, Pb5, Pe6, Pf7, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qa6, Re1, Pa3, Pf2, Pg3, Ph4\nBlack: Kg8, Qf5, Rd4, Pb5, Pe6, Pf7, Ph7"
}
] |
1k1r4/ppp3Qp/2q5/8/8/3P1P2/PPP1r2P/2KR2R1 w - - 0 18
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1k1r4/ppp3Qp/2q5/8/8/3P1P2/PPP1r2P/2KR2R1 w - - 0 18
Answer:
|
g1g2
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1k1r4/ppp3Qp/2q5/8/8/3P1P2/PPP1r2P/2KR2R1 w - - 0 18\nAnswer:"
},
{
"role": "assistant",
"content": "g1g2"
}
] |
2k4r/pp4p1/2n5/2p1p2p/3pP1nq/3P4/PPPB2P1/R2Q1RK1 w - - 0 19
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 2k4r/pp4p1/2n5/2p1p2p/3pP1nq/3P4/PPPB2P1/R2Q1RK1 w - - 0 19
Answer:
|
d1f3
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 2k4r/pp4p1/2n5/2p1p2p/3pP1nq/3P4/PPPB2P1/R2Q1RK1 w - - 0 19\nAnswer:"
},
{
"role": "assistant",
"content": "d1f3"
}
] |
4Q3/8/8/8/8/8/8/8 w - - 0 1
|
toy_fen_to_piece_list
|
List all pieces from this FEN position.
Format: "White: pieces | Black: pieces" using piece symbol + square (e.g., Ne4, pd5).
Uppercase for White, lowercase for Black.
Example:
FEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Answer: White: Ne4 | Black: pd5
FEN: 4Q3/8/8/8/8/8/8/8 w - - 0 1
Answer:
|
White: Qe8 | Black:
|
synthetic
|
[
{
"role": "user",
"content": "List all pieces from this FEN position.\nFormat: \"White: pieces | Black: pieces\" using piece symbol + square (e.g., Ne4, pd5).\nUppercase for White, lowercase for Black.\n\nExample:\nFEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\nAnswer: White: Ne4 | Black: pd5\n\nFEN: 4Q3/8/8/8/8/8/8/8 w - - 0 1\nAnswer:"
},
{
"role": "assistant",
"content": "White: Qe8 | Black: "
}
] |
r1b3k1/pp3rpp/8/2ppp1B1/3n3P/P1qB2Q1/2P2PP1/1R1K3R b - - 1 18
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r1b3k1/pp3rpp/8/2ppp1B1/3n3P/P1qB2Q1/2P2PP1/1R1K3R b - - 1 18
Output:
|
r . b . . . k .
p p . . . r p p
. . . . . . . .
. . p p p . B .
. . . n . . . P
P . q B . . Q .
. . P . . P P .
. R . K . . . R
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r1b3k1/pp3rpp/8/2ppp1B1/3n3P/P1qB2Q1/2P2PP1/1R1K3R b - - 1 18\nOutput:"
},
{
"role": "assistant",
"content": "r . b . . . k .\np p . . . r p p\n. . . . . . . .\n. . p p p . B .\n. . . n . . . P\nP . q B . . Q .\n. . P . . P P .\n. R . K . . . R"
}
] |
8/8/1p1P1k1K/1p6/pP6/P7/8/8 w - - 0 42
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/8/1p1P1k1K/1p6/pP6/P7/8/8 w - - 0 42
Answer:
|
White: Kh6, Pa3, Pb4, Pd6
Black: Kf6, Pa4, Pb5, Pb6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/8/1p1P1k1K/1p6/pP6/P7/8/8 w - - 0 42\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kh6, Pa3, Pb4, Pd6\nBlack: Kf6, Pa4, Pb5, Pb6"
}
] |
2r3k1/1p1p1ppp/1P2p3/8/6n1/7q/1PPPPP1P/R1BQ1nK1 b - - 0 18
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 2r3k1/1p1p1ppp/1P2p3/8/6n1/7q/1PPPPP1P/R1BQ1nK1 b - - 0 18
Answer:
|
White: Kg1, Qd1, Ra1, Bc1, Pb2, Pb6, Pc2, Pd2, Pe2, Pf2, Ph2
Black: Kg8, Qh3, Rc8, Nf1, Ng4, Pb7, Pd7, Pe6, Pf7, Pg7, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 2r3k1/1p1p1ppp/1P2p3/8/6n1/7q/1PPPPP1P/R1BQ1nK1 b - - 0 18\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qd1, Ra1, Bc1, Pb2, Pb6, Pc2, Pd2, Pe2, Pf2, Ph2\nBlack: Kg8, Qh3, Rc8, Nf1, Ng4, Pb7, Pd7, Pe6, Pf7, Pg7, Ph7"
}
] |
5rk1/2R5/p2r3p/3p1bp1/3P4/1P3P2/P5PP/4R1K1 b - - 0 25
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 5rk1/2R5/p2r3p/3p1bp1/3P4/1P3P2/P5PP/4R1K1 b - - 0 25
Answer:
|
f8c8
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 5rk1/2R5/p2r3p/3p1bp1/3P4/1P3P2/P5PP/4R1K1 b - - 0 25\nAnswer:"
},
{
"role": "assistant",
"content": "f8c8"
}
] |
8/r7/1R5p/3p1ppk/3P4/pNn1PK1P/P5P1/8 b - - 11 47
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/r7/1R5p/3p1ppk/3P4/pNn1PK1P/P5P1/8 b - - 11 47
Answer:
|
White: Kf3, Rb6, Nb3, Pa2, Pd4, Pe3, Pg2, Ph3
Black: Kh5, Ra7, Nc3, Pa3, Pd5, Pf5, Pg5, Ph6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/r7/1R5p/3p1ppk/3P4/pNn1PK1P/P5P1/8 b - - 11 47\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kf3, Rb6, Nb3, Pa2, Pd4, Pe3, Pg2, Ph3\nBlack: Kh5, Ra7, Nc3, Pa3, Pd5, Pf5, Pg5, Ph6"
}
] |
8/8/5p2/4p1p1/6Pp/r1k2P1P/P3RK2/8 b - - 19 60
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/8/5p2/4p1p1/6Pp/r1k2P1P/P3RK2/8 b - - 19 60
Answer:
|
White: Kf2, Re2, Pa2, Pf3, Pg4, Ph3
Black: Kc3, Ra3, Pe5, Pf6, Pg5, Ph4
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/8/5p2/4p1p1/6Pp/r1k2P1P/P3RK2/8 b - - 19 60\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kf2, Re2, Pa2, Pf3, Pg4, Ph3\nBlack: Kc3, Ra3, Pe5, Pf6, Pg5, Ph4"
}
] |
8/8/8/3p4/8/8/6B1/8 w - - 0 1
|
toy_piece_list_to_fen
|
Generate the FEN for this position.
White to move, no castling rights.
Example:
Pieces: White: Ne4 | Black: pd5
Answer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Pieces: White: Bg2 | Black: pd5
Answer:
|
8/8/8/3p4/8/8/6B1/8 w - - 0 1
|
synthetic
|
[
{
"role": "user",
"content": "Generate the FEN for this position.\nWhite to move, no castling rights.\n\nExample:\nPieces: White: Ne4 | Black: pd5\nAnswer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\n\nPieces: White: Bg2 | Black: pd5\nAnswer:"
},
{
"role": "assistant",
"content": "8/8/8/3p4/8/8/6B1/8 w - - 0 1"
}
] |
r3k2r/ppp2p1p/2n1pp2/7q/2PN2b1/2BP1Pb1/PP2B1P1/R2Q1RK1 w kq - 1 16
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r3k2r/ppp2p1p/2n1pp2/7q/2PN2b1/2BP1Pb1/PP2B1P1/R2Q1RK1 w kq - 1 16
Answer:
|
White: Kg1, Qd1, Ra1, Rf1, Bc3, Be2, Nd4, Pa2, Pb2, Pc4, Pd3, Pf3, Pg2
Black: Ke8, Qh5, Ra8, Rh8, Bg3, Bg4, Nc6, Pa7, Pb7, Pc7, Pe6, Pf6, Pf7, Ph7
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r3k2r/ppp2p1p/2n1pp2/7q/2PN2b1/2BP1Pb1/PP2B1P1/R2Q1RK1 w kq - 1 16\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qd1, Ra1, Rf1, Bc3, Be2, Nd4, Pa2, Pb2, Pc4, Pd3, Pf3, Pg2\nBlack: Ke8, Qh5, Ra8, Rh8, Bg3, Bg4, Nc6, Pa7, Pb7, Pc7, Pe6, Pf6, Pf7, Ph7"
}
] |
8/8/p4k2/P2p3p/3P1K1P/8/8/8 w - - 4 48
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/8/p4k2/P2p3p/3P1K1P/8/8/8 w - - 4 48
Answer:
|
White: Kf4, Pa5, Pd4, Ph4
Black: Kf6, Pa6, Pd5, Ph5
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/8/p4k2/P2p3p/3P1K1P/8/8/8 w - - 4 48\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kf4, Pa5, Pd4, Ph4\nBlack: Kf6, Pa6, Pd5, Ph5"
}
] |
8/8/6p1/8/4p3/8/2p5/1B6 w - - 0 1
|
toy_fen_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1
Position (pieces): White: Ne4 | Black:
Answer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5
Position (FEN): 8/8/6p1/8/4p3/8/2p5/1B6 w - - 0 1
Position (pieces): White: Bb1 | Black: pc2, pe4, pg6
Answer:
|
b1a2, b1c2
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1\nPosition (pieces): White: Ne4 | Black:\nAnswer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5\n\nPosition (FEN): 8/8/6p1/8/4p3/8/2p5/1B6 w - - 0 1\nPosition (pieces): White: Bb1 | Black: pc2, pe4, pg6\nAnswer:"
},
{
"role": "assistant",
"content": "b1a2, b1c2"
}
] |
1rbr2k1/ppN2ppp/3p4/4n2q/8/1B4Q1/PPP2PPP/3RR1K1 w - - 3 19
|
puzzle_piece_captures
|
List all captures the piece on d1 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 1rbr2k1/ppN2ppp/3p4/4n2q/8/1B4Q1/PPP2PPP/3RR1K1 w - - 3 19
Piece on: d1
Answer:
|
Rxd6
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on d1 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 1rbr2k1/ppN2ppp/3p4/4n2q/8/1B4Q1/PPP2PPP/3RR1K1 w - - 3 19\nPiece on: d1\nAnswer:"
},
{
"role": "assistant",
"content": "Rxd6"
}
] |
6Q1/8/8/8/8/8/8/8 w - - 0 1
|
toy_fen_to_piece_list
|
List all pieces from this FEN position.
Format: "White: pieces | Black: pieces" using piece symbol + square (e.g., Ne4, pd5).
Uppercase for White, lowercase for Black.
Example:
FEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Answer: White: Ne4 | Black: pd5
FEN: 6Q1/8/8/8/8/8/8/8 w - - 0 1
Answer:
|
White: Qg8 | Black:
|
synthetic
|
[
{
"role": "user",
"content": "List all pieces from this FEN position.\nFormat: \"White: pieces | Black: pieces\" using piece symbol + square (e.g., Ne4, pd5).\nUppercase for White, lowercase for Black.\n\nExample:\nFEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\nAnswer: White: Ne4 | Black: pd5\n\nFEN: 6Q1/8/8/8/8/8/8/8 w - - 0 1\nAnswer:"
},
{
"role": "assistant",
"content": "White: Qg8 | Black: "
}
] |
8/8/2Q5/3p4/2p5/8/8/8 w - - 0 1
|
toy_fen_to_piece_list
|
List all pieces from this FEN position.
Format: "White: pieces | Black: pieces" using piece symbol + square (e.g., Ne4, pd5).
Uppercase for White, lowercase for Black.
Example:
FEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Answer: White: Ne4 | Black: pd5
FEN: 8/8/2Q5/3p4/2p5/8/8/8 w - - 0 1
Answer:
|
White: Qc6 | Black: pc4, pd5
|
synthetic
|
[
{
"role": "user",
"content": "List all pieces from this FEN position.\nFormat: \"White: pieces | Black: pieces\" using piece symbol + square (e.g., Ne4, pd5).\nUppercase for White, lowercase for Black.\n\nExample:\nFEN: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\nAnswer: White: Ne4 | Black: pd5\n\nFEN: 8/8/2Q5/3p4/2p5/8/8/8 w - - 0 1\nAnswer:"
},
{
"role": "assistant",
"content": "White: Qc6 | Black: pc4, pd5"
}
] |
1k2Q3/1qp5/1p3p1p/4p3/8/2P1n3/PP1R2rP/7K b - - 3 31
|
puzzle_legal_moves
|
List all legal moves for the piece on b8 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 1k2Q3/1qp5/1p3p1p/4p3/8/2P1n3/PP1R2rP/7K b - - 3 31
Piece on: b8
Answer:
|
Ka7
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on b8 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 1k2Q3/1qp5/1p3p1p/4p3/8/2P1n3/PP1R2rP/7K b - - 3 31\nPiece on: b8\nAnswer:"
},
{
"role": "assistant",
"content": "Ka7"
}
] |
5r1k/1pq3p1/2p2P1p/3pPQ2/1p1P4/7P/1rB4K/5R2 b - - 1 35
|
puzzle_piece_captures
|
List all captures the piece on f8 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 5r1k/1pq3p1/2p2P1p/3pPQ2/1p1P4/7P/1rB4K/5R2 b - - 1 35
Piece on: f8
Answer:
|
Rxf6
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on f8 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 5r1k/1pq3p1/2p2P1p/3pPQ2/1p1P4/7P/1rB4K/5R2 b - - 1 35\nPiece on: f8\nAnswer:"
},
{
"role": "assistant",
"content": "Rxf6"
}
] |
4k2r/3pq2p/7Q/2p2p2/2N5/2Pp3N/P2K1PPP/n6R w k - 0 23
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 4k2r/3pq2p/7Q/2p2p2/2N5/2Pp3N/P2K1PPP/n6R w k - 0 23
Output:
|
. . . . k . . r
. . . p q . . p
. . . . . . . Q
. . p . . p . .
. . N . . . . .
. . P p . . . N
P . . K . P P P
n . . . . . . R
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 4k2r/3pq2p/7Q/2p2p2/2N5/2Pp3N/P2K1PPP/n6R w k - 0 23\nOutput:"
},
{
"role": "assistant",
"content": ". . . . k . . r\n. . . p q . . p\n. . . . . . . Q\n. . p . . p . .\n. . N . . . . .\n. . P p . . . N\nP . . K . P P P\nn . . . . . . R"
}
] |
r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15
Output:
|
r . b r . N . k
p p p . . B b Q
. . n . . n . p
q . . . . . . .
. . . P . . . .
. . N . . . . .
P P P . . P P P
R . B . . R K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r1br1N1k/ppp2BbQ/2n2n1p/q7/3P4/2N5/PPP2PPP/R1B2RK1 b - - 6 15\nOutput:"
},
{
"role": "assistant",
"content": "r . b r . N . k\np p p . . B b Q\n. . n . . n . p\nq . . . . . . .\n. . . P . . . .\n. . N . . . . .\nP P P . . P P P\nR . B . . R K ."
}
] |
8/6k1/6b1/1p2q3/8/7p/2PQ2P1/5R1K w - - 0 64
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 8/6k1/6b1/1p2q3/8/7p/2PQ2P1/5R1K w - - 0 64
Answer:
|
gxh3
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 8/6k1/6b1/1p2q3/8/7p/2PQ2P1/5R1K w - - 0 64\nAnswer:"
},
{
"role": "assistant",
"content": "gxh3"
}
] |
4r3/2p2r1k/3n4/6p1/4pqP1/6N1/2Q2PB1/4R1K1 b - - 6 42
|
puzzle_piece_captures
|
List all captures the piece on f4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 4r3/2p2r1k/3n4/6p1/4pqP1/6N1/2Q2PB1/4R1K1 b - - 6 42
Piece on: f4
Answer:
|
Qxg4, Qxg3, Qxf2+
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on f4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 4r3/2p2r1k/3n4/6p1/4pqP1/6N1/2Q2PB1/4R1K1 b - - 6 42\nPiece on: f4\nAnswer:"
},
{
"role": "assistant",
"content": "Qxg4, Qxg3, Qxf2+"
}
] |
6R1/8/Kpk1p3/1p1pP3/6P1/PPP1r3/8/8 b - - 3 40
|
puzzle_piece_captures
|
List all captures the piece on e3 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 6R1/8/Kpk1p3/1p1pP3/6P1/PPP1r3/8/8 b - - 3 40
Piece on: e3
Answer:
|
Rxe5, Rxc3
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on e3 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 6R1/8/Kpk1p3/1p1pP3/6P1/PPP1r3/8/8 b - - 3 40\nPiece on: e3\nAnswer:"
},
{
"role": "assistant",
"content": "Rxe5, Rxc3"
}
] |
8/8/8/5p2/8/3B4/8/8 w - - 0 1
|
toy_fen_to_legal_moves_uci
|
List all legal moves for the white piece in UCI notation, comma-separated.
Example:
Position (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1
Position (pieces): White: Ne4 | Black:
Answer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5
Position (FEN): 8/8/8/5p2/8/3B4/8/8 w - - 0 1
Position (pieces): White: Bd3 | Black: pf5
Answer:
|
d3a6, d3b1, d3b5, d3c2, d3c4, d3e2, d3e4, d3f1, d3f5
|
synthetic
|
[
{
"role": "user",
"content": "List all legal moves for the white piece in UCI notation, comma-separated.\n\nExample:\nPosition (FEN): 8/8/8/8/4N3/8/8/8 w - - 0 1\nPosition (pieces): White: Ne4 | Black:\nAnswer: e4c3, e4c5, e4d2, e4d6, e4f2, e4f6, e4g3, e4g5\n\nPosition (FEN): 8/8/8/5p2/8/3B4/8/8 w - - 0 1\nPosition (pieces): White: Bd3 | Black: pf5\nAnswer:"
},
{
"role": "assistant",
"content": "d3a6, d3b1, d3b5, d3c2, d3c4, d3e2, d3e4, d3f1, d3f5"
}
] |
8/8/3p4/3R4/3p4/3p4/8/8 w - - 0 1
|
toy_piece_list_to_fen
|
Generate the FEN for this position.
White to move, no castling rights.
Example:
Pieces: White: Ne4 | Black: pd5
Answer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Pieces: White: Rd5 | Black: pd3, pd4, pd6
Answer:
|
8/8/3p4/3R4/3p4/3p4/8/8 w - - 0 1
|
synthetic
|
[
{
"role": "user",
"content": "Generate the FEN for this position.\nWhite to move, no castling rights.\n\nExample:\nPieces: White: Ne4 | Black: pd5\nAnswer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\n\nPieces: White: Rd5 | Black: pd3, pd4, pd6\nAnswer:"
},
{
"role": "assistant",
"content": "8/8/3p4/3R4/3p4/3p4/8/8 w - - 0 1"
}
] |
6k1/5ppp/p3p3/2r1N3/2P2P2/7P/PR4P1/1b4K1 b - - 1 26
|
puzzle_piece_captures
|
List all captures the piece on c5 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 6k1/5ppp/p3p3/2r1N3/2P2P2/7P/PR4P1/1b4K1 b - - 1 26
Piece on: c5
Answer:
|
Rxe5, Rxc4
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on c5 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 6k1/5ppp/p3p3/2r1N3/2P2P2/7P/PR4P1/1b4K1 b - - 1 26\nPiece on: c5\nAnswer:"
},
{
"role": "assistant",
"content": "Rxe5, Rxc4"
}
] |
4r1k1/pp4np/2pp1RpB/4p3/3pP3/3P3P/PPP1K1P1/8 b - - 0 23
|
puzzle_legal_moves
|
List all legal moves for the piece on a7 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 4r1k1/pp4np/2pp1RpB/4p3/3pP3/3P3P/PPP1K1P1/8 b - - 0 23
Piece on: a7
Answer:
|
a6, a5
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on a7 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 4r1k1/pp4np/2pp1RpB/4p3/3pP3/3P3P/PPP1K1P1/8 b - - 0 23\nPiece on: a7\nAnswer:"
},
{
"role": "assistant",
"content": "a6, a5"
}
] |
r4r1k/1pp1NppR/3p4/p3n3/4P3/1PPP2P1/1P1K2P1/3R4 b - - 0 22
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r4r1k/1pp1NppR/3p4/p3n3/4P3/1PPP2P1/1P1K2P1/3R4 b - - 0 22
Output:
|
r . . . . r . k
. p p . N p p R
. . . p . . . .
p . . . n . . .
. . . . P . . .
. P P P . . P .
. P . K . . P .
. . . R . . . .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r4r1k/1pp1NppR/3p4/p3n3/4P3/1PPP2P1/1P1K2P1/3R4 b - - 0 22\nOutput:"
},
{
"role": "assistant",
"content": "r . . . . r . k\n. p p . N p p R\n. . . p . . . .\np . . . n . . .\n. . . . P . . .\n. P P P . . P .\n. P . K . . P .\n. . . R . . . ."
}
] |
8/2B5/8/8/8/8/8/8 w - - 0 1
|
toy_piece_list_to_fen
|
Generate the FEN for this position.
White to move, no castling rights.
Example:
Pieces: White: Ne4 | Black: pd5
Answer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1
Pieces: White: Bc7 | Black:
Answer:
|
8/2B5/8/8/8/8/8/8 w - - 0 1
|
synthetic
|
[
{
"role": "user",
"content": "Generate the FEN for this position.\nWhite to move, no castling rights.\n\nExample:\nPieces: White: Ne4 | Black: pd5\nAnswer: 8/8/8/3p4/4N3/8/8/8 w - - 0 1\n\nPieces: White: Bc7 | Black: \nAnswer:"
},
{
"role": "assistant",
"content": "8/2B5/8/8/8/8/8/8 w - - 0 1"
}
] |
1k1r4/ppp3p1/8/1P5p/8/P3n2P/2P1r1P1/B3NRK1 b - - 4 31
|
puzzle_best_move
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1k1r4/ppp3p1/8/1P5p/8/P3n2P/2P1r1P1/B3NRK1 b - - 4 31
Answer:
|
d8d1
|
lichess
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1k1r4/ppp3p1/8/1P5p/8/P3n2P/2P1r1P1/B3NRK1 b - - 4 31\nAnswer:"
},
{
"role": "assistant",
"content": "d8d1"
}
] |
1r4k1/5p2/4p1pp/3p4/3P4/q1P3P1/PrRQRP1P/6K1 b - - 11 27
|
puzzle_ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 1r4k1/5p2/4p1pp/3p4/3P4/q1P3P1/PrRQRP1P/6K1 b - - 11 27
Output:
|
. r . . . . k .
. . . . . p . .
. . . . p . p p
. . . p . . . .
. . . P . . . .
q . P . . . P .
P r R Q R P . P
. . . . . . K .
|
lichess
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 1r4k1/5p2/4p1pp/3p4/3P4/q1P3P1/PrRQRP1P/6K1 b - - 11 27\nOutput:"
},
{
"role": "assistant",
"content": ". r . . . . k .\n. . . . . p . .\n. . . . p . p p\n. . . p . . . .\n. . . P . . . .\nq . P . . . P .\nP r R Q R P . P\n. . . . . . K ."
}
] |
8/8/1p5p/p1k5/P3K3/1P5P/8/8 w - - 1 49
|
puzzle_piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/8/1p5p/p1k5/P3K3/1P5P/8/8 w - - 1 49
Answer:
|
White: Ke4, Pa4, Pb3, Ph3
Black: Kc5, Pa5, Pb6, Ph6
|
lichess
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/8/1p5p/p1k5/P3K3/1P5P/8/8 w - - 1 49\nAnswer:"
},
{
"role": "assistant",
"content": "White: Ke4, Pa4, Pb3, Ph3\nBlack: Kc5, Pa5, Pb6, Ph6"
}
] |
3rk2r/pp3pp1/4p3/4P2p/q2nQ2P/P3B3/5PP1/R4RK1 w k - 0 20
|
puzzle_legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 3rk2r/pp3pp1/4p3/4P2p/q2nQ2P/P3B3/5PP1/R4RK1 w k - 0 20
Answer:
|
Qxb7, Qxd4, Bxd4
|
lichess
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 3rk2r/pp3pp1/4p3/4P2p/q2nQ2P/P3B3/5PP1/R4RK1 w k - 0 20\nAnswer:"
},
{
"role": "assistant",
"content": "Qxb7, Qxd4, Bxd4"
}
] |
6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37
|
puzzle_piece_captures
|
List all captures the piece on d4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37
Piece on: d4
Answer:
|
Rxh4
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on d4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 6k1/5p1p/Q3p3/1p3q2/3r3P/P5P1/5P2/4R1K1 b - - 0 37\nPiece on: d4\nAnswer:"
},
{
"role": "assistant",
"content": "Rxh4"
}
] |
8/5p2/1kbB2p1/4Pp1p/p2P1P2/1pR3P1/1Kn4P/8 b - - 13 58
|
puzzle_legal_moves
|
List all legal moves for the piece on b6 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 8/5p2/1kbB2p1/4Pp1p/p2P1P2/1pR3P1/1Kn4P/8 b - - 13 58
Piece on: b6
Answer:
|
Kb7, Ka7, Ka6, Kb5, Ka5
|
lichess
|
[
{
"role": "user",
"content": "List all legal moves for the piece on b6 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 8/5p2/1kbB2p1/4Pp1p/p2P1P2/1pR3P1/1Kn4P/8 b - - 13 58\nPiece on: b6\nAnswer:"
},
{
"role": "assistant",
"content": "Kb7, Ka7, Ka6, Kb5, Ka5"
}
] |
1r2k1nr/3b1ppp/3Qp3/8/8/B3P1P1/5P1P/1q3RK1 b k - 0 24
|
puzzle_piece_captures
|
List all captures the piece on b1 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 1r2k1nr/3b1ppp/3Qp3/8/8/B3P1P1/5P1P/1q3RK1 b k - 0 24
Piece on: b1
Answer:
|
Qxf1+
|
lichess
|
[
{
"role": "user",
"content": "List all captures the piece on b1 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 1r2k1nr/3b1ppp/3Qp3/8/8/B3P1P1/5P1P/1q3RK1 b k - 0 24\nPiece on: b1\nAnswer:"
},
{
"role": "assistant",
"content": "Qxf1+"
}
] |
End of preview. Expand
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