Keys "s"=save "l"=load "b"=back once
Pawns may promote on the sixth rank or beyond.
Mecklenbeck Chess. This is the name by which Pritchard calls this variant. This author uses the term "Mecklenburg" for a four-handed game on a 16x8 board.
These are simple illustrations rather than strong opponents.
Bug reports? -- Thank you! Keep them coming!