My new obsession? Sudoku.

That 9x9 puzzle thing.

I figure it's a good way to keep my mind sharp while being utterly unchallenged in my search for education at this university.

There's a nice site with a bunch (over 4 billion) of free puzzles. http://www.websudoku.com

My best time (on easy of course) - 6 minutes, 35 seconds. Sweet.