Sudoku Online
Sudoku is an online game that is popular among math enthusiasts. This game has very simple rules but if you want to beat the hardest Sudoku puzzles, you have to know some of the more advanced techniques.
How To Play
One of the good things about online Sudoku is that you will have some of the cells filled which will take a lot of the pressure off of you. An important note is that you can only use numbers from 1 to 9 and that the game is over only when the entire grid is correctly filled.
