Check out Grant Acedrex, our featured variant for April, 2024.

Since Java is no longer supported in most browsers, our Java applets probably will not run unless you install an extension that will run them. We recommend installing the CheerpJ Applet Runner extension on Edge, Chrome, or another Chromium browser. If your browser still does support Java, and you're not using this extension, make sure this site is listed in your Java exceptions list. You should find this in the Security tab of your Java control panel.

Alliance Chess

If you had a Java-capable browser, you could play Alliance Chess here.
Keys "s"=save "l"=load "b"=back once

Mark Liptak and Rick Babcock, 1990. The object is to checkmate the other side's primary (white/black) king. You move whatever friendly units are on your own board during your turn. Neither secondary player may expose either of the side's kings to check. If the primary player exposes the secondary king to check, the secondary player is paralyzed, and primary player takes the turn instead. If secondary king is temporarily mated, pieces are frozen and uncapturable. Unfreeze by moving primary king to the other board.

Chess Variants

These are simple illustrations rather than strong opponents.

Bug Reports -- Thank you! Keep them coming!

Written by Ed Friedlander

WWW Page Added: April 1, 2003