Check out Atomic Chess, our featured variant for November, 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.

Symmetry Breaking Chess

If you had a Java-capable browser, you could play Symmetry Breaking Chess here.
No save/back keys for this applet yet.

Symmetry Breaking Chess and other cosmic variants.

This is actually a gag proposal and sometimes it generates the wrong numbers of units. Don't take this variant seriously.

I decided that if a unit can be anything other than a pawn, it cannot promote.

Sometimes this notices checkmate, sometimes not. Occasionally it will move into check or lose by making an illegal move.

Chess Variants

These are simple illustrations rather than strong opponents.

Bug Reports -- Thank you! Keep them coming!

Written by Ed Friedlander

WWW Page Added: Sunday, December 30, 2001