Game Courier supports many different games. Here is one picked at random: Cleopatra Chess - Dan Troyka game, similar to Benedict Chess but with only one color-changing piece. Cleopatra "seduces" any piece she sees.
Assault Chess
Keys "s"=save "l"=load "b"=back once
Joao Pedro Neto, January 2000. Who can conquer a weakened Red faster?