bishop 0.6.4

Bishop is a chess logic package with flexible variant support

0.6.4

• Fixed gates being output the wrong way round in FEN strings for fixed gating variants.

0.6.3

• Added variant: King of the Hill.
• Support for win regions.
• Added examples/play.dart - interactive CLI application for playing a game.
• Convenience methods on Game - moveHistory, moveHistoryAlgebraic and moveHistorySan.

0.6.2

• Switched to standard symbols for Xiangqi, i.e. Elephants are 'B' and Horses are 'N'.

0.6.1

• Board regions and region effects - these allow custom behaviour to be defined for pieces that are in specific areas of the board, and the ability to restrict piece types to regions.
• Fixed a bug in gating move generation on non standard sized boards.
• Xiangqi support: variant and piece definitions, regions and effects.
• Fixed a bug where the SAN format for pawn captures might be wrong (thanks @malaschitz).
• Fixed Chess960 castling moves not being generated for kings on g1 (thanks @malaschitz).
• Fixed Crazyhouse bugs: pawns being droppable on the first rank, and promoted pieces not being captured as pawns (thanks @malaschitz).
• Fixed a extremely rare case where a rook on the file of another uncastled rook of the same colour would affect the castling rights of that other rook (thanks @malaschitz).

0.6.0

• Support for hopper pieces, such as the Grasshopper and Xiangqi Cannon, and Betza modifiers 'p' and 'g'.
• Fixed a bug with capture only sliding moves not generating correctly.

0.5.2

• Fixed a bug in premove generation where quiet moves to opponent occupied squares weren't generating (e.g. pawn step forward onto opponent's piece).
• Added some extension functions for List<Move>, for filtering moves more fluently.

0.5.1

• Some convenience methods on Variant: pieceSymbols and commonPieceSymbols.
• Built in CastlingOptions are now static const.
• CastlingOptions.copyWith() and MaterialConditions.copyWith();

0.5.0

• Variant is now an immutable data type, which is converted to BuiltVariant when it's used in Game.
• fenBuilder parameter in Game constructor, overrides variant.startPosBuilder.
• Game.makeMoveString() and Game.makeMultipleMoves().
• variantFromString() utility function.

0.4.0

• Improved structure and formatting of codebase.
• There are some minor breaking changes, mostly related to CONSTANT_NAMES being changed to camelCase, and otherwise being more logically grouped. Some factory constructors were also changed to static constants, e.g. MaterialConditions.standard() is now MaterialConditions.standard.

0.3.3

• Fixed flex gating not generating no-drop moves
• Added support for variants that end after a number of checks (e.g. Three-Check)

0.3.2

• Support for fixed gating (e.g. gating in Muskteeer chess)
• Support for directional modifiers for oblique pieces in Betza parser (e.g. fN is now possible)

0.3.1

• Insufficient material draws
• Improved FEN validation
• Fixed a Zobrist hashing bug (on captures)
• Various minor improvements

0.3.0

• Gating drops and the Seirawan Chess variant
• Virgin file tracking
• Lots more documentation
• Allow a custom seed to be specified (for Zobrist hashing)
• Fixed SAN for castling with check

0.2.10

• Another small variant (mini - 6x6)
• buildRandomPosition() for generating arbitrary random positions, see Variant.miniRandom for an example
• Fixed a bug in which drop moves were not being legalised
• Fixed SAN disambiguators for pawns
• Various minor improvements

0.2.9

• Fixed FEN validation for small boards
• Added some documentation

0.2.8

• Fixed another 960 castling bug (370 / BNRKRBNQ)

0.2.7

• Fixed a castling bug in some 960 positions (e.g. 938 / RKRNBBQN)

0.2.6

• Support loading incomplete FEN strings
• Game.validateFen() function
• CastlingOptions.useRookAsTarget: formats algebraic moves correctly for Chess960

0.2.5

• Premove generation
• Game.loadFen() function

0.2.4

• Fixed engine not wanting to checkmate you
• Micro variant

0.2.3

• Basic engine
• Fixed CastlingOptions assertion

0.2.2

• Mini variant
• Independent side castling (e.g. only queenside for Minichess)
• Piece values

0.2.1

• Added Game.boardSymbols(), for use with the squares package

0.2.0

• Renamed package to Bishop
• Piece drops & hands (Crazyhouse support)

0.1.1

• Zobrist hashing & repetition draws

0.1.0

• Hello Bishop