SuDoku is still one of the hottest games in the world. The New York Times Touch Screen SuDoku contains more than 800 puzzles, all selected by world-renowned puzzle expert Will Shortz. And it is a breeze to play with the included stylus, forget the hassle of paper and pencil. Solve a square or whole puzzle with the touch of the stylus. There are 4 different levels of difficulty so you can start where you feel comfortable.