@yetanotheraoc - honestly, it wouldn't have surprised me too much if it followed another game exactly. After 11...fxe3 (which is actually in the master games database so a master actually fell for it!) my opponent is basically dead but played logical moves to avoid checkmate.
But no, move 13 is new and has never been played in the databases I've looked at. I could be wrong, but I'm not going to waste any more time on it.
Edit: I was surprised to find that *my* game wasn't in the database, but upon looking into it further, it says that unrated games aren't indexed. Sad.
I'm impressed you made that effort. Seriously.