Open Source Java Chess Games

Jin is a Java client for various chess servers. It currently supports the Internet Chess Club (chessclub.com) and the Free Internet Chess Server (freechess.org) but is designed to be able to support any chess server.

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. You can now play games against uci engines. pdf2pgn command line command included. Detailed documentation. Multilanguage currently support for English, Spanish and Catalan. Dark mode option. JDK-17 compatibility

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.

jose is a graphical Chess tool. >>> moved to https://peteschaefer.github.io/jose <<< You can store chess games in a database. You can view and edit games (including variations and comments). You can play against a plugged-in chess engine and use it for analysis. Features 3D board view.

Java Open Chess is a project written in Java in NetBeans IDE. There is possibility to play for 2 players on local computers and via network connection. There is also an option to play versus quite weak computer oponent. Stronger computer oponens will be implemented soon. ATTENTION: Requires Java 1.8 or higher!

Mobile Chess (for Java ME) and Flash Chess (for Web) with Strong Chess AI, see http://mobilechess.sourceforge.net/. Java Applet Chess and Ajax Chess are also available. Mobile Chess is sponsored by Chess Wizard now, see http://www.chess-wizard.com/.

PairFX is a chess pairing program specialized for youth tournaments in schools and chess clubs . No installation required! Just Unzip it and go! (You can run any kind of tournament with it actually but it was written for chess in schools) It supports the organization of a so-called 'run through' tournament and round robin (everybody against everybody) tournaments Swiss pairings are not (yet) possible. Are you a chess teacher at school, or organize a separate tournament at the club? Try PairFX! The run through pairing system makes it possible for player to come and go whenever they want and also to keep players playing all the time. It is not round based , so not everybody has to be finished to allow new pairings to be made. This is really great when players play at different speed and works very well in the club or at school.

A J2ME MIDlet implementing a Portable Chess Board to run on a Java enabled Cell Phone. In order to download the binaries and/or the source files please follow the Files->MobileChessBoard link above.

JavaPairing is a tool to manage a chess tournament. It is pure Java and can run as is on any platform, including Windows, Linux and Macintosh (JRE 1.6 or more required). It is free and open source under the GPLv3 license. Dutch, Dubov, r.r., Amalfi

Mediocre is a Java-based chess engine, implementing features like LMR, SEE, history and killer moves heuristics, transposition tables, internal iterative deepening, PVS search etc.

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.

This is a chess program to help you to organize any chess tournaments without using real chess rules, go to the support page of this program. The support page also has more information about this program. This program creates a "Data" folder to save settings of this program and notes of tournaments and players. Players could play with each other on a single device or playing by multiple devices by a network. This program shows squares that mouse points on them and that helps to prevent any mouse mistakes that happen when playing chess by computers! Although you could do moves by keyboard too. This program has all the functionalities that you need to manage a database, but you cannot analyze games by chess engines or creating variations for them. This program has all time controls in chess clocks, but if you need more complex time controls, you could use them as well, because this program allows you to start a game from any position by two different time controls.

JChessBoard is a chess game written in Java that can be connected to another JChessBoard via a direct TCP/IP connection. No Internet Chess Server is required for playing. It also became a full featured PGN viewer and editor.

It is a Shogi - Japanese Chess - game made in Java, where you can play against one of 3 AI's of your choice. Or against a friend.

Tool for chess teachers to create PDF files with chess diagrams in it. 1) Create a pgn file with chess diagrams (FEN notation) in it (e.g by using lichess) 2) Open the Fen2Pdf and select the folder containing the pgn(s) 3) Click start. Fen2Pdf detects the pgn files in it and creates a pdf file You can now print this file and hand the exercises over to your students Extra features: * Mirror the positions. This is handy if you want the same problems presented for the other color for educational purposes. You could present the same set of exercises in 2 different ways! * You can toggle the display of page numbers * The selected pgn folder is saved for next time * The title on the pages is the name of the pgn (without .pgn)

SJCE - Strong Java Chess Engines, free portable cross-platform graphical chess game, 100%-pure Java. Support with including many best free/open-source java xboard/uci chess engines. It is possible to play both White and Black. It is possible to play Human to Human, Human vs Engine, Engine vs Engine. Simple and intuitive GUI - Graphical User Interface. Tested on Windows/Linux. Need jre1.8 - https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html. Source - https://github.com/harp077/sjce If you like this - put a star on https://github.com/harp077/sjce/ for support project please.

This is UCI Chess Engine writen in Java. Since version 1.4 (inclusive) the project was moved to https://github.com/bagaturchess/Bagatur

Chesspresso is a chess library entirely written in Java. The main focus is to deliver high-level interfaces and efficient algorithms to programmers of Java chess software.

A simple two player chess game written in Java. The game enforces all of the rules of chess, highlighting potential moves, and has complete undo/redo functionality. A computer AI opponent is not available.

A fun game of Chess in 2-D created in Java. This game has basic features implemented, but we expect to push out a multiplayer version soon.

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. Francisco Rafael Del Roio <francipvb@hotmail.com>.

From the creator of MKGI Chess Club comes this next generation chess club. Completely re-written from scratch on the latest software frameworks, it features: social networks connection, scalable data storage, stunning graphics and much more to come. This project has two parts: - A Java Chess library containing board models, rules and PGN format management - A complete Chess web application based on the core Java library

This is a chess program to help you to organize any chess tournaments without using real chess rules, go to the support page of this program. The support page also has more information about this program. This program creates a "Data" folder to save settings of this program and notes of tournaments and players. Players could play with each other on a single device or playing by multiple devices by a network. This program shows squares that mouse points on them and that helps to prevent any mouse mistakes that happen when playing chess by computers! Although you could do moves by keyboard too. This program has all the functionalities that you need to manage a database, but you cannot analyze games by chess engines or creating variations for them. This program has all time controls in chess clocks, but if you need more complex time controls, you could use them as well, because this program allows you to start a game from any position by two different time controls.

This little tool might be helpful for chess players. The FIDE Rating Regulations (effective from 1 March 2024) are strictly implemented, therefore its calculation is hundred percent accurate. There is a Windows only version (Windows 7 or higher, .NetFramework 4.7.2 or higher (you don't need to worry about this with a current Windows 10 or 11)) ... and a Java version (Java 17 or higher).

Frittle is an open source amateur Java Chess Engine that supports the XBoard/WinBoard Chess Engine Communication Protocol (version 2).