ChessBoard - 2.02

ChessBoard is a Python implementation of the FIDE laws of chess.

John Eriksson
(wmjoers)

ChessBoard is a Python implementation of the FIDE laws of chess. The main goal is to implement all applicable rules in a simple, straightforward way. The intention is not to be fast but to be easy to understand and to be complete. Many other implementation has known problems with castling, stalemate or other more or less special rules.

Features:

The moves of the pieces
Castling
En passant
Check detection
Checkmate detection
Stalemate detection
Draw by the fifty moves rule detection
Draw by the three repetitions rule detection
Get valid locations support
Imoprt and export of Forsyth-Edwards Notation strings.
Add text moves in the AN, SAN and LAN standards.
Export moves in the AN, SAN and LAN standards.
Undo and Redo.
Goto a specified move.

Unpack the source and start example with "python ChessClient.py"

Keys:

Left - Undo last move.
Right - Redo move.
F - Print current board as FEN.
A - Print all moves as Algebraic Notation.
S - Print all moves as Standard Algebraic Notation.
L - Print all moves as Long Algebraic Notation.

Changes

Added the method getLastMove()
Changed the behavior of the promotion value. The promotion value set by setPromotion is always remembered until setPromotion(0) resets it.
Added the method getPromotion() to get the current promotion value.
Added the method getLastMoveType() to indicate if the last move was a "special move" like en passant or castling.
Fixed a bug in getLastTextMove(...). It now returns the correct code for castling.
Fixed a bug in the addMove() method. It pushed the state before it determined the game result causing it to loose the game result when using undo redo.

libraries 151 wmjoers 20 chess 14

Releases

ChessBoard 2.01 — 5 Dec, 2006

ChessBoard 2.0b — 28 Nov, 2006

ChessBoard 1.0 — 3 Aug, 2006

ChessBoard 2.02 — 3 Jan, 2007

ChessBoard 1.1 — 8 Aug, 2006

ChessBoard 2.03 — 7 Aug, 2007

ChessBoard 2.04 — 28 Jul, 2008

ChessBoard 2.05 — 29 Jul, 2008

Pygame.org account Comments

Ofer Shamai 2013-07-08 13:55

Hi,
Thank you very much for your package. It is very helpful!
However, I did find some minor issues.
Ofer
ChessBoard remarks & bugs:
1) IndexError: list index out of range:
import ChessBoard
a = ChessBoard.ChessBoard()
a.setFEN('8/R7/4p1k1/8/5PK1/8/PP5P/8 w - - 0 1')
a.addTextMove('h2h4')
a.getFEN()
result:
Traceback (most recent call last):
File "C:\Python27\lib\bdb.py", line 400, in run
exec cmd in globals, locals
File "<module1>", line 41, in <module>
a.getFEN()
File "file-name", line 930, in getFEN
if turn == "b" and (self._board[y][x-1] == 'p' or self._board[y][x+1] == 'p'):
IndexError: list index out of range
(in getFEN:
if not (x == 0 and y == 0):
if turn == "b" and (self._board[y][x-1] == 'p' or self._board[y][x+1] == 'p'):
ep = "%s%s" % ( ("abcdefgh")[x], ("87654321")[y+1])
elif turn == "w" and (self._board[y][x-1] == 'P' or self._board[y][x+1] == 'P'):
ep = "%s%s" % ( ("abcdefgh")[x], ("87654321")[y-1])
x+1 can excced 7
Is x-1 safe when moving on the first rank?)
2) Small documentation slip:
In HowToUseChessBoard.txt, instead of:
chessboard.getLastTextMove(format)
Returns the latest move as Algebraic chess notation.
Returns None if no moves has been made.
format can be:
ChessBoard.AN
ChessBoard.SAN (default)
ChessBoard.AN
The valid formats are: AN, SAN, & LAN
3) I added the following functions that might be useful:
def numMoveToalg(self,move):
return ''.join([self.numToalg(square) for square in self.getLastMove()])
def algToNum(self,square):
return ('abcdefgh'.find(square[0]), 8-int(square[1]))
def numToalg(self,squareAsNum):
return 'abcdefgh'[squareAsNum[0]] + str(8-squareAsNum[1])
def getNormalValidMoves(self,algebraicLocation):
return [self.numToalg(num2) for num2 in self.getValidMoves(self.algToNum(algebraicLocation))]

message

ChessBoard - 2.02

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Pygame.org account Comments

Ofer Shamai 2013-07-08 13:55

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