Keys "s"=save "l"=load "b"=back once
Invented by R. Wayne Schmittberger. There is no check or checkmate. The first player to be without at least one of each kind of unit loses. Pawns can be promoted to any piece, including the king, but this counts as loss of the pawn.
Bodlaender on Extinction Chess
These are simple illustrations rather than strong opponents.
Bug reports? -- Thank you! Keep them coming!