python-chess | A chess game built from scratch in Python | Game Engine library
kandi X-RAY | python-chess Summary
kandi X-RAY | python-chess Summary
This project includes a full chess engine, gui engine, and an AI engine. The AI engine utilizes the minimax and alpha beta pruning algorithms.
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Top functions reviewed by kandi - BETA
- Implementation of minimax minimize_black
- Compute the evaluation of the board
- Check if the player is valid
- Get the value of a piece
- Gets a piece of a chess piece
- Gets the piece of a piece
- Move the enanant piece to be consumed
- Called by the castling move
- Returns a list of valid moves that can move
- Gets the moves that are valid
- Returns a list of valid moves
- Return a list of all possible move moves
- Draws the game state
- Draw the piece of the game
- Draw squares
- Return a list of valid piece moves
- Returns a list of valid moves that can be played
- Return a list of moves that are placed in the game
- Returns a list of valid pawn moves
- Return a list of legal moves
- Return a list of valid moves
- Loads all images
- Minimaximize white
- Checks if the player is valid
- Undo the move
- Gets all possible moves that can move from starting_square
- Draw text on screen
python-chess Key Features
python-chess Examples and Code Snippets
Community Discussions
Trending Discussions on python-chess
QUESTION
Just downloaded the Python-Chess module and wanted to test it out; whenever I check the board state by using board.is_checkmate
, board.is_stalemate
, board.is_check
, board.is_en_passant
and a print statement, it always returns true.
I'm using VSCode on macOS 11.3. Python version is 3.8.2.
ANSWER
Answered 2021-May-20 at 09:00You are checking if a method exists. You need to call the method and check what is returned. Adding brackets will complete this. This will call the method, which checks if the board is in this state.
QUESTION
I am currently building a chess game using Python-Chess, and I am trying to use the SVG module to generate SVG images of the board. One of the parameters for generating an svg is check
(here), which is a "square to be marked indicating a check". However, from the docs, I couldn't find a way to figure out where the player's king is.
What I want to happen is, whenever board.is_check()
I want it to generate the svg with check=
, using the current location of the current player's king. How do I figure this out? Do I have to iterate through every square and check what piece is on there until I find the correct king? Or is there a function for this that I didn't see? Any help is appreciated, Thanks in advance!
ANSWER
Answered 2021-Mar-31 at 17:06There is a function for getting the position of the king which is documented here: https://python-chess.readthedocs.io/en/latest/core.html#chess.BaseBoard.king
Here is some example code:
QUESTION
I am using the module python-chess (https://python-chess.readthedocs.io/en/latest/index.html) to extract analyze 4 million chess games (http://caissabase.co.uk/).
How do I load all moves for a game as strings into a list? The idea is for me to be able to extract information about moves. For example, how many times did a Queen capture an opponent's piece? I would thus search for "Qx" in each move string. I have tried this:
...ANSWER
Answered 2021-Feb-04 at 01:02board.san(move)
gives you the notation of the move based on the current position (see documentation). However, you have already changed the position before by making the move on the board. Therefore it doesn't recognise the first knight move g1f3
as legal: the knight is already on f3!
I suspect that if you exchange the two lines in the loop it should work. That is, you first need to write down the move, and then make it (somewhat different to what you would do playing actual chess ;))
QUESTION
I hope you're having a good day :)
Recently I have been making a chess program.
I'm now at the point of making the AI and I'm using Stockfish for testing purposes.
Since I need the computer to have time to evaluate without pausing the pygame game loop, I'm using the threading library.
I'm also using python-chess as my main library for handling the game state and making moves, as well as accessing Stockfish.
Here is my code for threading:
...ANSWER
Answered 2020-Sep-25 at 14:37I'm not entirely sure why the loop stops, but I did figure out a way to fix my problem. Instead of:
QUESTION
I want to sequentially print the moves (one string per move at a time) from a game I read (using the python-chess library) from a text file.
So, say I have a pgn file with a game that has the following moves...
1. f3 e5 2. g4 Qh4#
... I would like to iterate through the moves and print them one by one (using a for loop or similar), showing
f3
e5
g4
Qh4
I found the documentation for python-chess here: https://python-chess.readthedocs.io/en/latest/
From the documentation I understand that
- I would need to create an instance of a visitor that can traverse the game nodes in PGN order using the accept method
- that the san methon would give me the string for the move that led to the current node
But I find this kind of documentation hard to read and would be greatly helped with examples.
What I managed to do is read a game from a pgn file and print all the moves in one go (as opposed to one by one) using the variation method.
...ANSWER
Answered 2020-Aug-21 at 10:32Iterating over mainline moves
The documentation for chess.pgn.read_game()
has an example for iterating over moves. To convert the moves back to standard algebraic notation, the position is needed for context, so we additionally make all the moves on a board
.
QUESTION
I'm trying to create a conda environment, but it has many dependencies that anaconda seems unable to locate, always sending the same error message below:
...ANSWER
Answered 2020-Jul-03 at 23:14py-opencv-3.4.2-py37h7c891bd_1
is osx-64
based build and you're trying to install into Windows OS. It's good to find the same build for Windows from the link you shared. Otherwise, just use the version without a build number. e.g. env.yml
for you.
QUESTION
I'm trying to export a python-chess game to a pgn file. The documentation recommends -
...ANSWER
Answered 2017-Mar-07 at 06:33To use the pgn
module you'd also have to do import chess.pgn
QUESTION
I was following this tutorial on how to write a chess program in Python.
It uses the python-chess engine. The functions from that engine apparently return SVG data, that could be used to display a chessboard.
- Code from the tutorial:
ANSWER
Answered 2020-Apr-26 at 13:09I think you are getting confused by the scripting nature of Python. You say, you have experience with Qt development under C++. Wouldn't you create a main window widget there first and add to it your SVG widget within which you would call or load SVG data?
I would rewrite your code something like this.
QUESTION
I am trying to create a neural network to play chess, but first, I need to convert the chess board to a list of integers. I am using the python-chess module for the chess board and game. I currently have a chess board class, but cannot find a method to convert it into a list.
I have tried to use the chess_board.epd()
method, but that returns a formatting scheme that is hard to convert.
Here is the code that I need:
...ANSWER
Answered 2019-Jun-07 at 21:15I have posted the question on Github, and I found I got a more elegant solution there. It was the following:
QUESTION
I am developing a chess GUI in Python 3.6.3
using PyQt5 5.9.1
(GUI framework) and python-chess 0.21.1
(chess library) on Windows 10
. I want to get the value of a piece that was clicked on an SVG chessboard (provided by python-chess
) so that I can then move that piece to another square.
After the first left mouse click and getting the piece, I want to get the second left mouse click from the user and get the square that the user clicked on. Then my chess GUI must move the piece from originating square to the target square.
So, here's my complete working code so far. Any hints or actual code additions are very welcome.
...ANSWER
Answered 2017-Nov-25 at 16:07If size of chessboard is known, you can find the coordinates of the mouseclick from event.pos() resp.event.x(), event.y() depending on marginwidth and squaresize, see chess.svg.py line 129 ff.
edit Nov 25: event.pos()
is in this example in MainWindow coordinates, to find the coordinates on chessboard all must be calculated from top left corner represented by self.svgX
and self.svgY
:
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Install python-chess
Follow the code below to create virtual environment and install the necessary libraries. (Currently tested on Python 3.7.9 with Pygame 2.0.0dev8 and Python 3.8.2 with Pygame 2.0.0 on macOS Catalina)
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