Sudoku was invented in the USA & became popular in Japan in 1986. Ten years later it became famous the world over & today we can find this pastime in nearly every newspaper or magazine. If you're a Sudoku addict, you know that it's a simple game but that it requires a lot of concentration & free time. & what better way to make good use of all that time you spend in the bathroom than by filling out a couple of Sudokus? This roll of toilet paper reproduces the famous game's squares. A total of 81 squares divided into 3 x 3 square boxes. Like the famous game, some squares already have numbers in them, you'll have to find the rest & make sure numbers 1 through 9 appear in each 3 x 3 box. We all know that having a sit down can be a time consuming & boring process. Some people read, others sing. Why not play Suduko with your loo paper? Contemplate not constipate! Suduko is dangerously addictive, & if you get frustrated with it & can't complete it, just use it as toilet paper & flush it away. A great gift for people who are addicted to math puzzles, & also for those who spend a lot of time in the bathroom.