python-chess | A chess game built from scratch in Python | Game Engine library

 by   boosungkim Python Version: Current License: GPL-3.0

kandi X-RAY | python-chess Summary

kandi X-RAY | python-chess Summary

python-chess is a Python library typically used in Gaming, Game Engine applications. python-chess has no bugs, it has no vulnerabilities, it has build file available, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

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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              python-chess has a low active ecosystem.
              It has 4 star(s) with 0 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 1 have been closed. On average issues are closed in 19 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of python-chess is current.

            kandi-Quality Quality

              python-chess has no bugs reported.

            kandi-Security Security

              python-chess has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              python-chess is licensed under the GPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              python-chess releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed python-chess and discovered the below as its top functions. This is intended to give you an instant insight into python-chess implemented functionality, and help decide if they suit your requirements.
            • 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
            Get all kandi verified functions for this library.

            python-chess Key Features

            No Key Features are available at this moment for python-chess.

            python-chess Examples and Code Snippets

            No Code Snippets are available at this moment for python-chess.

            Community Discussions

            QUESTION

            Python-Chess board.is_checkmate, .is_stalemate, .is_en_passant, .is_check Always Returning True
            Asked 2021-May-20 at 09:00

            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 09:00

            You 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.

            Source https://stackoverflow.com/questions/67617008

            QUESTION

            Get Location of Piece in Python-Chess
            Asked 2021-Mar-31 at 17:06

            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 17:06

            There 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:

            Source https://stackoverflow.com/questions/66803080

            QUESTION

            Extract Moves as Strings from PGN file Using python-chess
            Asked 2021-Feb-04 at 01:02

            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 01:02

            board.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 ;))

            Source https://stackoverflow.com/questions/66037243

            QUESTION

            Infinite while loop stopping unexpectedly python threading
            Asked 2020-Sep-25 at 14:37

            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 14:37

            I'm not entirely sure why the loop stops, but I did figure out a way to fix my problem. Instead of:

            Source https://stackoverflow.com/questions/64056499

            QUESTION

            Printing individual moves with the python-chess library
            Asked 2020-Aug-21 at 10:32

            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

            1. I would need to create an instance of a visitor that can traverse the game nodes in PGN order using the accept method
            2. 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 10:32

            Iterating 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.

            Source https://stackoverflow.com/questions/63517471

            QUESTION

            Why can't I install these specific requirements?
            Asked 2020-Jul-03 at 23:28

            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 23:14

            py-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.

            Source https://stackoverflow.com/questions/62723122

            QUESTION

            python-chess - AttributeError: module 'chess' has no attribute 'pgn'
            Asked 2020-May-03 at 15:16

            I'm trying to export a python-chess game to a pgn file. The documentation recommends -

            ...

            ANSWER

            Answered 2017-Mar-07 at 06:33

            To use the pgn module you'd also have to do import chess.pgn

            Source https://stackoverflow.com/questions/42641603

            QUESTION

            How to display an SVG image in Python
            Asked 2020-Apr-26 at 13:09

            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 13:09

            I 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.

            Source https://stackoverflow.com/questions/61439815

            QUESTION

            Is there a way to convert a python chess board into a list of integers?
            Asked 2020-Jan-27 at 07:10

            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 21:15

            I have posted the question on Github, and I found I got a more elegant solution there. It was the following:

            Source https://stackoverflow.com/questions/55876336

            QUESTION

            Get clicked chess piece from an SVG chessboard
            Asked 2019-Sep-08 at 18:28

            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 16:07

            If 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:

            Source https://stackoverflow.com/questions/47287328

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install python-chess

            Switch to Python3.
            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)

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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