Chess

Primitive Python chess engine.

Currently very much in development.

Examples

Basic usage:

>>> from chess import Game
>>> Game().fen()
'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1'

Determining valid moves:

>>> from chess import Game
>>> game = Game()
>>> game.valid_ends('a1')
set([])
>>> [str(square) for square in game.valid_ends('a2')]
['a3', 'a4']

Tracking game state:

>>> from chess import Game, BasicMove
>>> game = Game()
>>> game.fen()
'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1'
>>> game = game.move(BasicMove('a2', 'a4'))
>>> game.fen()
'rnbqkbnr/pppppppp/8/8/P7/8/1PPPPPPP/RNBQKBNR b KQkq a3 0 1'

Checkmate:

>>> from chess import Game, BasicMove
>>> game = Game()
>>> game.is_checkmate()
False
>>> # Fool's mate...
>>> game = game.move(BasicMove('f2', 'f3'))
>>> game = game.move(BasicMove('e7', 'e5'))
>>> game = game.move(BasicMove('g2', 'g4'))
>>> game = game.move(BasicMove('d8', 'h4'))
>>> game.is_checkmate()
True

https://github.com/doismellburning/chess