Keys "s"=save "l"=load "b"=back once
Mannis Charosh, 1946. Captures are mandatory, and a unit which can continue capturing must do so on the same turn. It is listed in Pritchard's handbook but I agree with commentators that it is unplayable as a game. Instead, it is a theme for problematists.
These are simple illustrations rather than strong opponents.
Bug reports? -- Thank you! Keep them coming!