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Questions tagged [python-chess]

For questions about the python-chess library (for questions about your own chess algorithm, use the [chess] tag instead).

Refers to the python-chess library, developed by Niklas Fiekas.

python-chess is a pure Python chess library with move generation, move validation and support for common formats.

This tag should be used only for questions about the python-chess library.

For general questions about chess-playing algorithms, use the tag combined with the tag. If your question is not actually about chess or the algorithms involved, you should not use the tag.

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129 questions
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How to make a Regular expression to remove all timestamp data from Chess Pgn?

I have a string with the Pgn from a chess.com match. I need to remove all of the time data from the Pgn. Using Regular Expressions how would I accomplish this? '1. e4 {[%clk 0:29:59.9]} 1... e5 {[%clk 0:29:59.1]} 2. Nf3 {[%clk 0:29:58]} 2... Nf6…
PeacetimeWall22
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Tkinter button not displaying image despite existing reference

In a GUI based chess game that I have created using tkinter in Python I'm using images to display the chess piece on the grid button. The image .png files are located within a folder in the same directory as the program. When I run the code the…
Manusman
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Mouse click not precise

My application is written using the latest versions of Python 3.7, PyQt5 and python-chess. I have an SVG chessboard, produced by python-chess itself. My application handles mouse clicks on the chessboard which highlight the clicked square. I have a…
Boštjan Mejak
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Python chess: Check for passed pawns

In a chess position, I wish to check whether any passed pawn exists for white. Is it possible to do so using the python-chess library? If not, how can I implement it? def checkForPassedPawn(position: chess.Board, side_to_move: chess.Color): #…
Boo Who
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How do I create graphs like this in python?

enter image description here I would like to generate graphs in this format, does anyone have code to be able to generate
Masmok
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Can't find error in chess code. When piece is moved back it doesn't update the position

I'm making chess in python. It was all working and I had the moves as a list of indexes but I decided to use a class instead as I thought this would be better. However, now the function to get all the legal moves doesn't seem to work and I've found…
BOOM_Daniel2
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How to isolate a single game from a pgn file containing multiple games in python?

I have a pgn file with multiple games. I want to separate all the games into different files or just one text file so that I can separate all the White moves and Black moves. Any help?
Kapil Gund
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How do you change a string to a list without separating all the characters?

I'm using the python-chess module to write a chess engine. Here's the code that I'm struggling with, for context: def move_search(): move_evals = [] legal_moves = list(board.legal_moves) for move in range (len(legal_moves)): …
user19770271
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How to detect who is move white or black in python-chess library?

I am created some chess program and want to detect who have move white or black. Which objects stores information which pieces will move Board, GameNode? import chess.pgn import chess.uci # ??? Board().is_white_move()? # ???…
Chameleon
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