Description:Online Sudoku is a game with a different twist on the classic Japanese puzzle game! Online Sudoku gives you the option to change your board size from 4x4 to 16x16 for more of a challenge. When the board is at 12x12 or 16x16 letters are involved in the solving process. Online Sudoku also has an editor to make your own boards. This game has 3 levels of difficulty available for playing, but classic Sudoku rules apply. Fill in the fields with the digits 1 to 9 in such a way that they donít repeat themselves in any row, 3x3 box or column. Enjoy!