Browse free open source C Chess Games and projects below. Use the toggles on the left to filter open source C Chess Games by OS, license, language, programming language, and project status.

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  • 1
    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: 753 This Week
    Last Update:
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  • 2
    GCompris : I got IT

    GCompris : I got IT

    Educational Software for children aged 2 to 10.

    GCompris is a high quality educational software suite comprising of numerous activities for children aged 2 to 10. Some of the activities are game oriented, but nonetheless still educational.
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    Downloads: 45 This Week
    Last Update:
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  • 3
    ChessDB is a free open-source chess database for Windows, Linux, Mac OSX and most UNIX and UNIX-like operating systems. ChessDB is based on code from Scid http://scid.sourceforge.net/ - a project for which there have been no updates for several years. In
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    Downloads: 76 This Week
    Last Update:
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  • 4
    Scidb

    Scidb

    Chess Database Application

    Scidb is an open-source chess database application for Windows, Unix/Linux. It is a new development inspired by Scid.
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    Downloads: 8 This Week
    Last Update:
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  • 5
    Faile is a free chess program which plays a fairly strong game of chess (Expert strength or better). One of the main goals of Faile is to provide a full featured chess program with source code which is tidy, well documented, and easy to understand.
    Downloads: 10 This Week
    Last Update:
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  • 6
    chess10
    Шахматный движок и графическая оболочка под Windows 64 (запуск - start.cmd), под Linux запускать под xboard. Исходники на Си прилагаются. The chess engine and graphical shell run on Windows 64, and on Linux run on xboard. The C sources are attached.
    Downloads: 7 This Week
    Last Update:
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  • 7
    Popeye is a chess problem solving and testing software with strong support for fairy chess and heterodox genres. For more information cf. topic "Popeye (chess)" on http://en.wikipedia.org/
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    Downloads: 3 This Week
    Last Update:
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  • 8
    Gambit

    Gambit

    A cross-platform chess game.

    Gambit is a cross-platform chess game. There are binaries for Windows users. Users of Unix-like operating systems can check the web site for build instructions (it should be easy to follow).
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    Downloads: 9 This Week
    Last Update:
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  • 9
    Fantom

    Fantom

    Chess program for windows and linux

    Шахматная программа с экспериментальным генетическим алгоритмом поиска подобно глубоким нейросетям. Вдобавок к основному алгоритму альфа бета. Программа имеет графику под windows и испол файл под linux.
    Downloads: 5 This Week
    Last Update:
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  • 10
    Winboard 4.5 Accessible Chess

    Winboard 4.5 Accessible Chess

    Chess for the Blind for the JAWS or NVDA Screen Readers

    Winboard 4.5 32-bit is a free Windows accessible Chess program that works automatically with the JAWS or the free NVDA screen reader. It is for the blind, low sighted or those who can not use a mouse. It provides vocal announcements of position changes and other selectable board conditions. Blind players also use a separate "tactile chess board". Winboard 4.5 has full keyboard access to move pieces and run menu items. Partial sighted players use high contrast mode and adjust board, piece, most font sizes and colors. Available languages are English, German, Spanish, Italian, Dutch and Russian. Games may be viewed, modified or saved in standard PGN format. Two Chess engines supply play and grand master strength move analysis. Connect to the Free Internet Chess Server (FICS) and play humans. Modify verbosity in screen reader configurations and in the Winboard "Sound" dialog under the "General" menu. Find all documentation in the "doc" folder under the Winboard directory of your C drive.
    Downloads: 4 This Week
    Last Update:
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  • 11

    OBender

    Chess program

    Chess program, plays quite interesting, installer for windows, works in Linux under xboard, source code in pure C
    Downloads: 2 This Week
    Last Update:
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  • 12
    This project is a POSIX-compliant driver for the dgt board from dgtprojects. It is intented at acting as a layer between chess engines and the dgt board.
    Downloads: 1 This Week
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  • 13
    Downloads: 2 This Week
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  • 14
    It is just a Chinese-Chess Game,using SDL Library. Its target is to be a full feature Chinese-Chess ,supporting Two player via internet ,One player vs computer with AI supported
    Downloads: 2 This Week
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  • 15
    Small potato is a IETF protocol version 2 compliant chess engine, to be used with XBoard/WinBoard style interfaces.
    Downloads: 2 This Week
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  • 16
    An open source chess engine in C, released under the GPL. Compatible with the XBoard and UCI interface protocols to link to a GUI or other chess arbiter.
    Downloads: 2 This Week
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  • 17
    olivechess

    olivechess

    a UCI chess engine

    OliveChess is a simple chess engine compatible with modern chess interfaces such as ChessBase products, Arena and XBoard/Winboard. The engine supports UCI and XBoard protocols. Note: in order to use it as an xboard engine you may need Polyglot tool to be installed first
    Downloads: 2 This Week
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  • 18
    Thief is a free chess client to play on chess servers like FICS: http://www.freechess.org It supports regular chess and all variants played. It is the best client for playing Bughouse, a special team-chess game (for more info see http://www.bughouse.
    Downloads: 1 This Week
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  • 19

    c-board

    A console/ncurses chess engine frontend and PGN editor.

    CBoard (Curses/Console Board) is an Ncurses frontend to chess engines supporting the XBoard protocol. Supports reading and writing PGN including roster tags, RAV, FEN, NAG and comments, lots of configuration options, UTF-8, different board sizes depending on the terminal and more.
    Downloads: 1 This Week
    Last Update:
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  • 20
    FreeICS is a server which allows multiple users to play chess against each other. This project is stable and in production at a number of sites. There are several sub-projects which enhance the utility of the server, starting with a tournament manager.
    Downloads: 1 This Week
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  • 21
    Sjeng is a strong, GPL'ed chessprogram that plays bughouse and crazyhouse (drop-chess). It also supports standard chess and is compatible with any program supporting the XBoard/WinBoard protocol.
    Downloads: 1 This Week
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  • 22
    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/... For access to code, please clone the git repository. Compiles and Runs on 32/64 bit on Windows, Mac, Linux, Android (ARM/x86) and Raspberry. Released under GNU v2 license. (means free to copy, free to modify, free to use, ...) Works fine with Arena/Cutechess/BanksiaGui/Winboard/Xboard/...
    Downloads: 1 This Week
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  • 23
    A chess client and server, allowing users to play chess against each other over a network. The server can support multiple games at a time with many users connected simultaniously
    Downloads: 1 This Week
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  • 24
    ABKit is a C++ library intended to accelerate board games development by providing the thinking engine under the Alpha-Beta algorithm. The application just need to create a few C++ methods to adapt to the actual game (like Chess, Checkers, ...).
    Downloads: 0 This Week
    Last Update:
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  • 25
    CINAG is an UCI computer chess engine. This is a module which thinks about the game and try to find the best move for each position. Our goal is to create a quite strong opponent by using state of the art AI technics.
    Downloads: 0 This Week
    Last Update:
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