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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.
    Leader badge">
    Downloads: 788 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.
    Downloads: 50 This Week
    Last Update:
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  • 3
    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/
    Downloads: 25 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: 17 This Week
    Last Update:
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  • 5
    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: 16 This Week
    Last Update:
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  • 6
    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: 11 This Week
    Last Update:
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  • 7
    OpenGL chess game. Project moved to SourceForge: http://sourceforge.net/projects/dreamchess/
    Downloads: 15 This Week
    Last Update:
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  • 8
    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 2.1.9 and has been released on 19/08/2025. 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: 15 This Week
    Last Update:
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  • 9
    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: 8 This Week
    Last Update:
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  • 10
    mpchess

    mpchess

    simple chess game written in C

    Sour*eforge.net has become inaccesible to me because of Cl*udflare. The latest versions of the programs will be on my site: https://matei.one/. Simple chess game for people who want to play chess but don't want to take it seriously. Written in C, using SDL 1.2 or SDL 2 for graphics. Interface inspired from old chess game for ZX Spectrum. The computer searches (L+2)/2 moves ahead (assuming that a move means that both sides move a piece), where L is the difficulty level. Positions are evaluated only by adding the values of the pieces left on the board. Any factors related to where the pieces are, such as mobility, doubled pawns, isolated pawns etc. are not considered. To add variety to the game, possible moves are randomly shuffled before every search.
    Downloads: 14 This Week
    Last Update:
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  • 11
    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: 3 This Week
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  • 12
    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: 7 This Week
    Last Update:
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  • 13
    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: 3 This Week
    Last Update:
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  • 14

    chessoclock

    chessoclock is a simple chess clock running on a virtual terminal

    chessoclock is a simple chess clock running on a virtual terminal. It supports an user defined time amount and increment per move as well as extra time and all the features of a Fischer clock. chessoclock is no longer based on the curses library. Install it on your (even old old old) laptop and you can have a chess clock everywhere in every moment. Under Linux only it can run in a xterm, but you get best visual effect when running in a virtual terminal or on the console and not under X. Merging chessoclock and a Minix 2.0.4 root disk gives us chessoflop. Use chessoflop to turn your twenty years old 80286 into a chess clock without installing anything. Reverse the image on a floppy, put that disk on your old computer, turn it on and that’s all! chessoflop image is available in the download page (it's the one all capitalized).
    Downloads: 4 This Week
    Last Update:
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  • 15
    CountDown_Timer

    CountDown_Timer

    Count-Down Timer

    A simple application for displaying time-remaining for an event, such as for cooking, chess playing, debate speech timing, or governing floor-time at a public speaking event, such as paper presentations. The numbers appear large enough to be seen at a distance, or the display can be shrunk into the corner of a presentation screen. The time-remaining display changes color, as a warning, near end of the duration. Display also shows elapsed time, and has a pause/resume button. The application is a simple stand-alone executable that can be placed on any machine, and does not require internet connection to use it. Can be used to count-down time for events lasting less than one minute, hours, days, or up to a year.
    Downloads: 2 This Week
    Last Update:
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  • 16
    Vulcan Chess Mods

    Vulcan Chess Mods

    Enhancements and Bug Fixes to the Vulcan Tri-D Chess Program

    This project is directed to the development of Vulcan, a Linux open-source Tri-D chess program written by Mauro Persano. From the author's site ( http://www.fzort.org/mpr/projects/vulcan/ ): "vulcan lets you play against the computer a chess variant inspired by a certain well-known science fiction TV series." Critical Patches: > Mouse Bug fix (X11 only) -- Significantly improves GUI responsiveness to mouse. > King Bug fix -- Prevents program crash due to a computer's piece capturing the player's king. Feature Patches: > Clock Option (X11 only) -- Adds an option to show or hide the clock showing the elapsed time for each player. NOTE: If the source code tarball for Vulcan isn't available from the author's site, it can be found at http://web.archive.org/web/20110726072225/http://www.fzort.org/mpr/projects/vulcan/
    Downloads: 3 This Week
    Last Update:
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  • 17
    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: 3 This Week
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  • 18
    OpenChess is a Chess game, Opening Trainer and Chess data base for the PalmOS platform. It supports Palm devices with OS 3.0 and above and uses separate layouts for Grayscale, Color and HiRes (OS5 and Sony Clié OS4) devices.
    Downloads: 1 This Week
    Last Update:
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  • 19
    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: 2 This Week
    Last Update:
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  • 20

    OBender

    Chess program

    Chess program, plays quite interesting, installer for windows, works in Linux under xboard, source code in pure C
    Downloads: 1 This Week
    Last Update:
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  • 21

    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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  • 22
    Small project chess engine/AI written in C designed to work with XBoard. This is a summer project by an undergraduate computer science student, not a work of art. The code is rough and not fully functional.
    Downloads: 1 This Week
    Last Update:
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  • 23
    CP 3D Chess
    Cross-Platform 3D Chess A 3D chess game made using OpenGL and C++ Objectives: -High Quality Graphics -Proper Chess Rules -Availability of Unofficial Chess Rules -Reading Generic Chess Files -Proper A.I. for user vs. computer modes -Good GUI -Network Current Status: Chess rules exist
    Downloads: 1 This Week
    Last Update:
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  • 24
    It is a Chiese chess game, using GTK+-2.0. I write this for playing it with my remote friend. Not supportting one player vs computer. I hope that it is useful.
    Downloads: 1 This Week
    Last Update:
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  • 25
    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: 1 This Week
    Last Update:
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