good puzzle, shows that some moves that seem to help you actual lead to mate.
Excellent Endgame Puzzle!

If you are just showing us what happened, there is no point posting it as a puzzle. Just post it as a 'series of moves.' Otherwise we are just guessing at random moves.

Yes, it isn't certain mate, but luckily the poster doesn't infer that:
I'm not sure if this is forced, but it sure was lucky!
Indeed it was, and nice mate! A good escape, methinks.
This is a puzzle from my last live chess game, and this is exactly what happened. It was pure luck some would say, my opponent probably deserved the win but the mate is simply amazing. Black's last move was Bg1, preparing a mate with Rh2. I was in despair, thinking the game was lost. But there's a miraculous turn-around here for white, I found it-- can you? I'm not sure if this is forced, but it sure was lucky!