Tournament Today, Game #2

Today was my first complete tournament since I was a teenager ten years ago. I finished first under 1200. My rating went from 920 to 909. I won two games as white and lost three games as black. My wins were quick, resulting in checkmate, and against weaker players; my losses were drawn out a bit more, with two resignations (after giving up too much material) and one checkmate. The losses were against players who play as well as I do when I don't make bonehead mistakes, which means I have a chance if I face them again.

Here was the 12 move checkmate I pulled out. I'll be posting these games one at a time.