Open Source C++ Chess Games

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. Stockfish is a 11-time winner of the Top Chess Engine Championship. Stockfish is open source (GPLv3 license). That means you can read the code, modify it, and contribute back. You can use Stockfish on your computer or on your iOS or Android device. So you can get world-class chess analysis, wherever you are. The Stockfish engine features two evaluation functions for chess, the classical evaluation based on handcrafted terms, and the NNUE evaluation based on efficiently updatable neural networks.

Scid is a chess database application (cross-platform, for Unix/Linux and Windows) with many search and database maintenance features.

A free and open source chess database application for Linux, Mac OS X and Windows.

Brutal Chess features full 3D graphics, an advanced particle engine, and several different levels of intelligent AI, inspired by the once popular "Battle Chess" released by Interplay circa 1988.

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

Cassandre is an extensible chess engine written in C++, it is Winboard/XBoard compliant.

Eagle Mode is a zoomable user interface (ZUI) with file manager, file viewers, games, and more. This project is about a futuristic style of human-computer interaction, where the user can visit almost everything simply by zooming in. It features a portable C++ toolkit API for developing such ZUIs, and it features the Eagle Mode application, which provides a virtual cosmos with plugin applications. The most important one is the professional file manager with its rich, scriptable command set. It integrates file viewers for most of the common file types, as well as an audio and video player. Furthermore, the virtual cosmos contains a chess game, a netwalk game, a 3D minesweeper game, a multi-function clock, a stock watchlist, some fractals, and a Linux kernel configurator in form of a kernel patch.

Scidb is an open-source chess database application for Windows, Unix/Linux. It is a new development inspired by Scid.

XiangQi Wizard (Chinese Chess Wizard) is a powerful XiangQi (chinese chess) program, which supports UCCI engines. XQWizard Light is the Mobile version for Windows CE and Java ME. ElephantEye is the UCCI engine in XQWizard with strong AI.

The Nimzo_3d GUI is a chess program for Windows 7 - 11 It is an enhanced version of the Tarrasch Chess GUI written by Mr Bill Forster, with many additional features. It has a simple, easy to use interface, so it is ideal for novice players or inexperienced computer users. It also has more advanced features for expert users. So if you just want a casual blitz game against the computer, or to automatically analyse one of the famous games from chess history, it can perform these tasks and many more. It has a choice of a classical 2d screen view or realistic 3d graphics powered by DirectX Anyone who wants to add new features to the program should download the file < Nimzo_3d_v4_build.7z> from the < Files > < Build> section. This package contains Visual Studio project files and C++ source code files. Alternative Nimzo 3d Chess GUI website with other downloads, including 32-bit versions - https://nimzo-3d-chess-gui.infinityfreeapp.com

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

EBoard is a user-friendly chess interface for ICS (Internet Chess Servers). While it will focus on FICS (www.freechess.org), should work with any other ICS. It supports playing against local chess engines too.

Chess engine code name "Gull"

Chess for Windows. Created in Visual Studio /VC++. Has a basic colorful interface, features AI/CPU player. Future versions will have drag'n'drop, take back option, more visual AI move, different difficulty levels...

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).

Grapefruit is an opensource chess engine based on Toga II 1.4 beta5c.

Virtual Chess Clock is a chess clock software: it can be used to simulate a chess clock on computer (typically a laptop). Virtual Chess Clock is designed to be easy to use. It is free, open-source and multi-platform.

KMT Chess is a chess engine. It supports Winboard Chess Engine Protocol and can be used in combination with Winboard or Arena user interfaces. KMTWinboard package includes WinboardX interface and a opening book, providing a much better user experience.

Fen2eps is a small console program that converts FEN (Forsyth Edwards Notation) strings to EPS (Encapsulated Postscript) files containing the chess board diagram.

A PGN-format chess game viewer for the PalmOS. Displays PGN format chess games and (will display) FEN format positions, and allow the entry of new games.

Online chess table for friendly play across the internet. No rules are hard-coded, so play whatever variations you please! Has chat, clock, and will set up standard, Fischer random (chess960) + much more! MOVED: http://code.google.com/p/chessnuts/

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.

chess program Bison

A Chess game made by two students for a progamming project. The game has support to save and load files and timers for each player. The source code is in portuguese but there are plans to translate it. This is the base for the bigger project: Hydrus.

ChessGC is an opensource 3D Chess game for windowns written in C++ and OpenGL. It is being created as part of a game development club. Currently, games can only be played by two people on the same computer.