Given that this position is legal, and could be reached in a legal game of chess, what were the two last half-movess, or one move for White and one for Black?
[FEN "5K2/8/6Pk/8/5Q1R/8/8/8 w - - 0 1"]
P.S.: I don't know the source. If someone knows the author, please say so and I will make an edit.