Checkmate
Ummm... Thank you?
Anyways, I did not call the puzzle stupid. I called the puzzle flawed.
The puzzle is flawed because you claim white to be able to mate in three, which he cannot achieve against best defense.
If you were simply claiming that this was the end of one of your games, and in your game you mated in three moves, then there was no reason to post the sequence in puzzle format.