EZPZ. Always a great abundance of moves to be made. But there was one rather tricky unique rectangle. So, being generous, I'll give it a 16.
Thanks for the clarification regarding guilt, lk911. I misinterpreted your first comment -- thought you were saying that Catholic guilt somehow led (helped? drove?) you to high sudoku achievement!
As a lapsed Catholic myself, I had managed to push the guilt to the back of my mind -- but now that you mention it, I'm beginning to feel guilty myself. Like maybe instead of playing sudoku I should be out feeding the poor, or at least cleaning my bathroom!
It's not just a game. Sudoku improves your memory, spacial perception, ability to quickly see what is missing, concentration, visualization, and sequential reasoning. I'm sure Catholics needn't feel guilty about that much mental workout.