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

Christiaan Freeling's game. The queen is royal. Only the queen captures by displacement. Other units exchange. If in check, the queen may move only one square. The square which the queen vacates is destroyed. Queens may pass over, but not land on, a vacated square. Other pieces may bring their squares with them. It is forbidden to move so as to leave any square completely unconnected with the others. I made stalemate a draw.

Thanks to Jacob Middag for his help with the debugging.

Chess Variants

Meet Ed

These are simple illustrations rather than strong opponents.

Bug reports? -- Thank you! Keep them coming!