This is my third puzzle.

That was sooooo cooll

wanna try mine?

Good Puzzle, however practically rarely may happen such mating.

THere is another CM:

 

white plays A7 and locks the Black king in place, Black will be forced to move the g pawn, and then Nb6 CM!

Simple and ugly :)

I am always grateful for some tactical polishing exercises, so good on you.

The h8 rook could have delivered the second blow, but a two bishop double stab is always nicer.

2. Ra8# is mate also!

ngammer wrote:

THere is another CM:

 

white plays A7 and locks the Black king in place, Black will be forced to move the g pawn, and then Nb6 CM!

Simple and ugly :)

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yes, i found this too. so the solution that staggerlee provided wasn't the only possible solkution.

Here's another possible solution...

I like Ra8# better.