Everyone's favorite number arrangement logic game is here. Sudoku! Arrange number tiles (1-9) so that every row, column and square of 9 cells contains exactly one of each tile. And now you can play the game in this simple and easy version for iPad, iPhone and iPod Touch.

For instructions, touch the ? or "How to" icon in the game or see below.

To start a new game: First touch the number corresponding to the difficulty level you choose, 1 being the easiest, 9 being the hardest. Then press the "play" button. You can do this even when a game is currently ongoing.

To place a number into the puzzle: First touch the number you wish to place into the puzzle, then touch the cell you want to place it in. If the number can not be placed in that cell (because the number already appears in that row, column or square) it will not be accepted.