Black moved last. What was Black's last move & what was White's?
![](http://perplexus.info/images/perplexus/problem/begin.jpg)
There are, at least, 3 solutions.
The last two moves could have been as follows :-
(Black is hopelessly out-numbered and about to be mated)
White: Any move threatening Checkmate next move
Black: Sneezes loudly; "accidentally" knocking most white pieces to the floor. "Whoops! Sorry, we'll have to start again - My turn to be White!