an extremely addicting game. its kind of like pringles. once you start, you just can't stop. there's a whole table for it at barnes and nobles. you should go with your friends and pitch in and buy a book. you will fall in love.
as of right now, the current world chamption Su Doku player is a girl named Keira, but 2 others, Pauline and Alissa, are a close second and third.