Keys "s"=save "l"=load "b"=back once
Captured units do not change sides, and you can use your turn to drop one back on the board. However, they do not capture or give check. after being reintroduced. If they are captured again, they may be reintroduced as capturing units.
You may drop pawns on your first rank, but not your eighth rank.
Clockwork Orange Chess -- game by Fergus Duniho.
These are simple illustrations rather than strong opponents.
Bug reports? -- Thank you! Keep them coming!