A PHP Web Application that you can install on your own web server. It allows you to play chess with other users across the internet or sitting at the same screen. It only permits valid moves and can automatically detect check and checkmate status.
Forum Chess takes the one-on-one mentality of chess and throws it out the window.
Forum Chess interfaces with a BBS and allows a team-based chess game. Up to four players can be involved with a team and can collaborate with eachother in order to win.