I was reading László Polgár's excellent book Chess: 5334 Problems, Combinations, and Games and ran across #1071, White to move and mate in 2:

The purported solution is...

1. ♘xf6+ ♚xf6
2. ♕f7#

... which, indeed, works - and there is no other mate in two that I can see - so why blog this?

Because there's a mate in one.