THere are so many ways for White to stick it to Black here I couldn't fiogure out which one you were looking at:
Qb6+ wins Rook;
My personal favorite, Bxf8 disc+ wins Bishop and causes Black to start Armaggedon Q-&R exchanges to avoid mate.
What was solution??
Here is another puzzle in which you have to win material. It isn't very hard, though.
I hope you liked it =)