Showing 755 open source projects for "chess"

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  • 1
    chess-tui

    chess-tui

    Play chess from your terminal

    chess-tui is a terminal-based chess application that lets you play chess directly from your command-line interface with a rich set of features normally found in graphical clients. It supports local two-player games as well as playing against any UCI-compatible chess engine, giving users flexibility to challenge engines like Stockfish or GNU Chess.
    Downloads: 2 This Week
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  • 2
    Stockfish

    Stockfish

    UCI chess engine

    Stockfish is a free, powerful UCI chess engine derived from Glaurung 2.1. Stockfish is not a complete chess program and requires a UCI-compatible graphical user interface (GUI) (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably. Read the documentation for your GUI of choice for information about how to use Stockfish with it.
    Downloads: 112 This Week
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  • 3
    Sunfish

    Sunfish

    Sunfish: a Python Chess Engine in 111 lines of code

    sunfish is a minimalist yet surprisingly strong chess engine written in Python, designed to demonstrate how powerful algorithms can be implemented in a highly compact codebase. Despite being only around a hundred lines of core logic, the engine achieves competitive performance, reaching ratings above 2000 on online platforms. It implements classic chess engine techniques such as alpha-beta pruning and efficient board representation while maintaining readability and simplicity. ...
    Downloads: 10 This Week
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  • 4
    AlphaZero.jl

    AlphaZero.jl

    A generic, simple and fast implementation of Deepmind's AlphaZero

    Beyond its much publicized success in attaining superhuman level at games such as Chess and Go, DeepMind's AlphaZero algorithm illustrates a more general methodology of combining learning and search to explore large combinatorial spaces effectively. We believe that this methodology can have exciting applications in many different research areas. Because AlphaZero is resource-hungry, successful open-source implementations (such as Leela Zero) are written in low-level languages (such as C++) and optimized for highly distributed computing environments. ...
    Downloads: 14 This Week
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  • 5
    react-chessboard

    react-chessboard

    The React Chessboard Library used at ChessOpenings

    React-Chessboard is a React component for rendering an interactive chessboard. It provides an easy way to integrate chess functionality into web applications with support for move validation and animations.
    Downloads: 0 This Week
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  • 6
    Chess Engines for Android (APKs)

    Chess Engines for Android (APKs)

    Prebuilt UCI- and XBoard-compatible chess engines.

    ...Requires a chess app that supports the OEX format (e.g. Chess for Android or DroidFish).
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    Downloads: 687 This Week
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  • 7
    LucasChessR

    LucasChessR

    GUI of chess

    Lucas Chess (R) is a free, open-source chess program designed primarily for training and improving chess skills. It acts as a comprehensive learning platform, offering tools for beginners and advanced players alike. The software includes a wide range of exercises covering openings, tactics, endgames, and visualization techniques. Users can play against multiple chess engines with adjustable difficulty levels that simulate different strengths.
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    Downloads: 3,432 This Week
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  • 8
    Chess Engines for Android

    Chess Engines for Android

    Portable UCI- and XBoard-compatible chess engines.

    Open source chess engines that support the Universal Chess Interface (UCI) protocol or Chess Engine Communication Protocol (XBoard). They are written in the C, C++, Go and Rust programming language. C and C++ based chess engines were generated with Android NDK, Clang and GCC. Go and Rust based chess engines were generated with their correspondent compilers.
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    Downloads: 335 This Week
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  • 9
    belofte chess

    belofte chess

    A promising chess program

    A console/text based chess program with XBoard/CECP and UCI API, available on all major platforms. You may need a graphical chess interface to use it. Please refer to README.md in the files section for installation instructions. The last stable release is 2.2.0 and has been released on 13/04/2026. Belofte 0.2.0 till 0.9.20 (c/c++): Xboard 1 & 2 (CECP) - Linux/Unix/(Windows) Belofte 2.1.1 and up (c++11) : UCI and Xboard 2 - Linux/Windows/Mac/Android/...
    Downloads: 7 This Week
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  • 10
    Chess-gambiteer

    Chess-gambiteer

    Chess training program playing gambits

    Program to train against gambit play (*) with the computer, with a strength adjustable chess engine (Danasah, currently set at approx 1400 EL0 when playing against it). Also included now are two options to watch an engine e.g. the 'aggressive' Patricia5 (with gambits) play against another engine (eg IM level). The engine gambit books are made in such a way that 1) real lousy gambits are not played, and 2) the book is choosing a gambit line as often as possible, so for Black it might go for e.g. a Benko gambit or so and if you let it play with White, a lot of 1.e4 gambits can be played. ...
    Downloads: 3 This Week
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  • 11
    Riddle-Chess
    The original idea of Alexander V. Catapang Jr. in the Guess-Chess from the eGames package. Riddle-Chess is an addition to the idea and transfer of rules to makruk, xiangqi and shogi.
    Downloads: 1 This Week
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  • 12
    Spert Chess
    Download and extract, then run Spert file. For Windows 32-bit systems, run Spert x86 file.
    Downloads: 0 This Week
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  • 13
    Fair-chess

    Fair-chess

    A new -better- chess variant , *Fair-Chess* ! (also with handicaps)

    A new -(and much better) sort of Chess game , *Fair-Chess* ! Being interested in chess for two decades now, i designed a chess variant in which the intrinsic White advantage is compensated by removing the f2 and c7 pawns (calibrated by engine analysis). Also, in such a way detailed knowledge of opening theory is not important anymore (but it still looks more like normal chess than Chess960, also called 'Freestyle' nowadays.... ).
    Downloads: 0 This Week
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  • 14
    Scid vs. PC

    Scid vs. PC

    Chess Database and Toolkit program

    "Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has many interface fixes and improvements, and is fully compatible with Scid's .si4 databases. New features include a rewritten Gamelist, Computer Tournament, and FICS, Tree, Book and Graph improvements.
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    Downloads: 775 This Week
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  • 15
    Chess Tools for Android

    Chess Tools for Android

    Scripts and tools for building and testing chess engines.

    Open source scripts and tools for Android. Every zip archive contains a readme file with further information (e. g. link to the source code). Chess tools are located in the libs directory and are available for arm64-v8a, armeabi-v7a, x86 and x86_64 based devices. CECSA (Chess Engine Compiler Script for Android) and CETSA (Chess Engine Tournament Script for Android) are scripts for Termux. They need to be extracted in the home directory of Termux. There is also an installation script for CECSA (cecsa.sh) that can be used to install a complete compilation environment with all necessary compilers, tools and libraries under Termux. ...
    Downloads: 12 This Week
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  • 16
    Scid
    Scid is a chess database application (cross-platform, for Unix/Linux and Windows) with many search and database maintenance features.
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    Downloads: 388 This Week
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  • 17
    ChessX

    ChessX

    Chess Database and PGN viewer

    A free and open source chess database application for Linux, Mac OS X and Windows.
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    Downloads: 489 This Week
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  • 18
    ChessForge

    ChessForge

    Chess analysis, training and testing for Windows.

    Chess Forge is a Free and Open Source Windows desktop application facilitating chess training. Use Chess Forge to build your opening repertoire, study endgames, strategy and tactics. Utilize the two distinct solving modes and also Chess Forge's unique Training Mode where you get tested against the workbook's content with the help of the engine.
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    Downloads: 280 This Week
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  • 19
    SIA

    SIA

    AI framework to autonomously improve the performance of any AI system

    SIA is a self-improving AI framework designed to improve the performance of models or agents on benchmark tasks. It uses an iterative loop where a meta-agent creates or updates a task-specific target agent, while a feedback agent studies results and proposes improvements. The framework can refine both the harness around the task and the agent implementation itself. It is aimed at research and experimentation across tasks such as machine learning benchmarks, legal classification, code...
    Downloads: 0 This Week
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  • 20
    PasKnight

    PasKnight

    Chess engine written in Pascal with an UCI interface.

    PasKnight is a UCI compatible chess engine. It does not have a graphical interface of its own; instead, it runs as a console application that communicates via text commands with a GUI (like Arena, CuteChess, or WinBoard). PasKnight is written in Pascal using Lazarus & Free Pascal compiler. Executables are provided for Windows, Linux and macOS. Elo of the engine v1.00rc21 is around 2620
    Downloads: 14 This Week
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  • 21
    Basic Blind Chess

    Basic Blind Chess

    Blind Chess using Taiwan rules

    Blind Chess also known as "Dark Chess" (暗棋) or "Banqi" or Half Chess , is a two-player Chinese board game played on a 4x8 grid, or half of the xiangqi (Chinese Chess) board. This application is using Taiwan rule. AI is using basic minimax tree structure and some rules. Advanced algorithm such as Upper Confidence bounds applied to Trees and Monte Carlo Tree Search are NOT used.
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    Downloads: 6 This Week
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  • 22
    chessPDFBrowser

    chessPDFBrowser

    Chess application whichs allows working with chess PDF books and PGNs.

    Chess application which allows working with PDFs and PGNs. You can work with the chess games of the PDF and edit their tree of variants. Graphical environment. Standard PGN TAGs. PGN comments. Ocr like (Fen string detection from chess board position images). Connection to Uci chess engines (like stockfish). Position analysis, full game analysis.
    Downloads: 39 This Week
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  • 23
    Chess Round Robin Manager

    Chess Round Robin Manager

    Java Schach Turnierverwaltung / Java Chess Tournament Management

    Manage chess round robin tournaments with JKlubTV Version 3.0.0-beta This application stores the data belonging to round robin into a SQLite database. It is intended for webmasters who want to easily manage a club tournament in their own chess club. The HTML tables that are to be published for the website will be created easily by the application.
    Downloads: 6 This Week
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  • 24
    Chess Tools for Windows

    Chess Tools for Windows

    Batch tools for creating Polyglot books and PGN-based statistics.

    Open source scripts and tools for Windows. Every zip archive contains a readme file with further information. PGNStat and PGNXtract are batch processing tools for Windows. Simply unpack the zip archive into a directory of your choice. The batch files require free and open source third-party tools. These are not included in the zip archives and must be downloaded separately. An alternative download link, where all third-party tools are already integrated, can be found in the readme files.
    Downloads: 1 This Week
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  • 25
    A collection of LaTeX-styles used for generating diagrams of chess problems.
    Downloads: 0 This Week
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