Framework for creation of board games. Chess is built-in, Monopoly comes next. It addresses: 1) Players 2) Game authors 3) AI developers 4) Model-based developers. Developed by software professionals using EMF. New games are configured in few hours.
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/.
SimpleShogi is a Java implementation of the game Shogi (japanese chess) it supports hot seat and multiplayer via network (UDP). SimpleShogi offers intuitive symbols for beginners but does not implement an AI-player.
This chess program changes its strength to give the best match against you. Eventually it learns to beat you specifically through learning alogirthms. Features included transposition tables and a elementary 3-piece endgame tablebase.
FIGS, open and fun! GPL/java game server for many games, and a graphical client. Server works for 16/19 chess variants,adding go, rating system, and haskell AI client soon.
Opala is a chess-like game written in Java. You can either play against another human or against an AI. A cool user interface using Java Swing is availible. Network support is planned.