Here is a game I recently played where I managed to checkmate my opponent in 12 moves.  He made a couple of mistakes to help me along, but they were mistakes I could possibly have made myself.  In any case, it's a game I'm quite proud of -- check it out.

Thanks, I agree: Qf3, Qg4, Qh6, Rf3, Ng4 or pushing either the g or h pawns on the 10th move would have saved him.