My Sudoku obsession has past its prime, but I still get the urge to do them every now and then. I received a sudoku calendar last Christmas and still haven’t done the majority of them, but they lie waiting in my desk drawer for those idle moments when I really have nothing to do. The urge really is at it’s strongest when I’m on the subway and I’m either not listening to podcasts or reading manga and I look over to see a person’s New York Post or the Metro daily newspaper.