How fast can you checkmate?

I liked this puzzle and hence sharing it.  Point is what is black's weakness inspite of being up on material  There are several ways you can start the mate, though there is only one shortest.  I have provided variation of all the check move options, so play for mate and have fun.  Be careful not to get mated!

Good puzzle. I didn't solve it, but should have. Had the right moves in the wrong move order and kept trying to make it work instead of being logical.

Very interesting sacrifice.

 Yeah no kidding. It was a very good one though

interesting puzzle.. although in a real game i probably wouldn't play this line.. mostly because i wouldn't have seen it lol

Nice entertainment.. Took time for exact sequence though seemed easy..

Nice puzzle yeah but how is black up in material? he's down a pawn worth unless you forgot to put a random bishop somewhere.

Anyway liked it but I didn't see the sacrifice until after a couple tries