post the all 6 mates then.
Rf1# Rf2# 0-0# Bg6# Rh7# Rg7#
You could turn this into a decent puzzle by adding a white knight at g6 and posing the following:
Find a check for white that is NOT a checkmate.
There is only 1 solution.
..also the black piece on d6 should be switched to a rook or knight.