STINGER STOCKFISH CHESS PORTABLE

For chess variants it only requires an additional convention which UCI option to use to set the variant, which is UCI_Variant, and it uses the generalized FEN and coordinate notation as described above.

The Universal Chess Interface is a chess engine protocol specified here ( older version). When a castling move is ambiguous because the king could pseudo-legally move to the target square without castling, such as in Diana chess, the 'king captures rook' chess960 castling notation is used.In games where the gating happens on arbitrary squares, e.g., game of the amazons, the square is indicated after the gating piece, like a4a5pd5. For castling if gating happens on the rook square, it is encoded as rook captures king, e.g., h1e1h. S-Chess style gating moves use the same notation as promotions to indicate the gated piece, e.g., d1d2e.Corresponding demotions are denoted with a. Piece drops like in crazyhouse are indicated by replacing the origin square by the capital letter of the dropped piece and e.g., Drops of pieces in promoted state such as in kyoto shogi, are denoted using a +, e.g., Shogi style piece promotions are denoted with a +, e.g., b2h8+.For chess variants it requires extensions in order to describe piece drops, gating, and shogi-style piece promotions. The pure coordinate notation is specified as part of the UCI protocol (also here). This is also the case when the gating would otherwise be ambiguous, such as in case of castling due to the option of gating on king or rook, e.g., 0-0/Eh1.

If gating happens to a square other than the origin square, the square is indicated after the gating piece, like Qa4/Pd4. Piece drops like in crazyhouse are indicated by adding an before the target square, e.g., Drops of pieces in promoted state such as in kyoto shogi, are denoted using a +, e.g., S-Chess style gating moves are indicated by adding the capital gating piece character after a /, e.g., Qd2/E.

For chess variants there are several extensions in order to represent special moves, such as piece drops and gating. The Short/Standard Algebraic Notation for standard chess is specified in the PGN standard. It is recommended to add a variant operation in order to specify the variant name. Apart from that the EPD specification defined in the PGN standard for chess applies. The Extended Position Description for chess variants does not have any variant-specific modifications other than applying all the changes as for FEN. The specification of the Shogi Forsyth-Edwards Notation is part of the USI protocol specification. For specific rule modifications some extensions and modifications are required, such as for check counting, S-Chess gating, counting rules, and the like. For chess variants FEN can be naturally extended by allowing arbitrary piece characters and board sizes. The Forsyth-Edwards Notation for standard chess is specified in the PGN standard. The main addition is the Variant header tag containing the capitalized variant name in order to specify the variant the game record is using. For chess variants it can be naturally extended by generalizing the move and position notation, i.e., SAN and FEN.

STINGER STOCKFISH CHESS PORTABLE

The Portable Game Notation is a standard for recording chess games, see its specification. Most standards are taken over from chess with minor extensions and modifications, but the differences often are not documented, so this page tries to fill this gap. This is an overview of standards used for chess variants.

Stinger stockfish chess