thats a 2 move mate white's move + black's move is counted as 1

No, that's mate in three in the longest variation. I only showed the tricky one.

well yea but dum time-wasting moves are just a part of all the roads that lead to rome(checkmate)

what is this world's delight? lightning, that mocks the night, brief even as bright.

good one.

it's not 3moves mates.. coz if you like to make it longer.. there's lot of move to stop the check.. 

Good point ! Thanks. That's not even checkmate, my apologies, I edited the original post.

It is still winning of course.