Trap Door Chess II

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

Units landing on or crossing over the trap doors fall to the lower board. Any unit under a falling unit is destroyed. Only queens can rise back up, and only if they begin directly under the trapdoors. Greg Hills and Trevor Bimler, 1976.

Chess Variants

Meet Ed

These are simple illustrations rather than strong opponents.

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