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.

DuoChess

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

After a legal move on one board, any unit may transfer to the same square on the other board so long as it is empty. I didn't allow castling to do this.

A piece, but not a pawn, may instead of making an orthochess move transfer to the same square on the other board so long as it is not occupied by a friendly unit. If it is occupied by an enemy unit, that unit is captured.

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