Games with such simple rules of play are often the most captivating, and therein lies the appeal of Sudoku.
The game is simple to play, and once you get started, solving Sudoku puzzles can become quite addictive. So, to help provide your daily Sudoku fix, Gideon Greenspan and Rachel Lee have created Web Sudoku, a website that is capable of generating billions of puzzles. So many, in fact, that you won't soon run out. Click.