Online Chess Engine

Redqueen is an UCI (Universal Chess Interface) only compatible chess engine written in C++.

Simontacchi is a Winboard/UCI compatible chess engine that intends to grow via development community involvement. The goal of the project is to create a chess engine that rivals the strongest commericial and amateur programs.

Chesley is a free software chess engine written in C++ targeting Windows and Unix-like platforms and the xboard GUI. Chesley implements a number of modern chess programming techniques, including bitboard move generation, transposition tables, etc.


Platforms: *nix

Java based client / server online games engine & API for easy creation/running of real-time multiplayer games. Games include Battleships, Camelot, Checkers, Chess, Connect 4, Dots, Go, Octagons, Texas Hold'em Poker, Reversi, Spades, Tetris & Tic-tac-toe


Platforms: Windows, Mac, Linux

Soft Chess is a compact program comprising the chess engine and the user interface. Features include - Adjustable computer skill, Help for beginners, Ability to take moves back, Ability to adjust parameters of the scoring function.


Platforms: Windows

PlayE4 chess software offers multi-players chess games in real time. The 3D, user-friendly chess software allows chess enthusiasts to enlarge their pool of game partners and play against players of their skill level any time of day. PlayE4 is available in 3 game modes and 6 different languages...


Platforms: Windows

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


Platforms: *nix

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.


Platforms: *nix

Bagatur chess engine and tools. Keywords: Reusable Bit Board, PGN tool, TPT implementation with LRU discipline and hashkeys, MTD parallel search based on PV alpha-beta, adaptive move ordering


Platforms: Windows, Mac, Linux

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


Platforms: Windows, Mac, Linux

This library is an attempt to create a flexible chess engine using the Java programing language. The main diference than others chess engine's is that it is only a library, and it can be attached to any program, including a web application. If you are interested to contribute please contact me....


Platforms: Windows, Mac, Linux

Chess Game World is a game developed for Chess fans. You can compete with real players all over the world or watch other games in progress. Play in the practice mode if you want to play with the computer. The ELO rating system is introduced in this game. You'll get rate points just as...


Platforms: Windows

Free Chess Game allows you to play as White or Black, with all regular chess rules such as three move repetition and 50 move rule and En Passant. Save Games and retrieve PGN and FEN strings.


Platforms: Windows

Chess.com automatic player program. It gives possibility to link a chess engine (rybka, zappa etc) to the chess.com site and play automatically.


Platforms: Windows

Genre: Cards, Casino, Board About jose Chess Database A graphical Chess tool.You can store chess games in a database (backed by MySQL).You can view games and edit variations and comments.You can play against a "plugged-in" chess engine and use it for analysis.


Platforms: Mac, not required

Whether you have just started or are chess Grand Master, you`ll have fun with all the possibilities of this program, Real Chess, which guarantees either fun and learning or prefecting your game, in equal parts, independent of your level.Real Chess is built on a powerful, advanced chess engine,...


Platforms: Windows

Vanessa Chess is the first multi-document, multithreading chess program for Macintosh with an intuitive interface and a strong chess engine. It features customizable chessboards and chess pieces, an annotation editor for text styles and diagrams, a game analysis and position editor, multiple undo...


Platforms: Mac

Chess Editor is a pure Java tool to create, edit and view chess games in the Portable Game Notation (PGN) format. The tool integrates with externally specified chess engine programs to provide analysis of board positions.


Platforms: Windows, Mac, Linux

Slibo aims to be a comfortable chess interface for KDE. Designed to be usable as a replacement for the xboard chess interface, it has much more functionality, and, on the other hand, is easy to use. Slibo can be used with common chess engines like crafty or gnuchess, but it provides its own chess...


Platforms: *nix

PyChess is a gtk chess client, originally developed for gnome, but running well under all other linux desktops. (Which we know of, at least). PyChess is 100% python code, from the top of the UI to the bottom of the chess engine, and all code is licensed under the Gnu Public License. Very...


Platforms: *nix