Enjoy another classic Mahjong Online game in our Microsoft-developed collection! Use your logic skills to fill the nine rows and nine columns with the numbers 1 to 9.
Each number can only be used once in a given row or column. Enter the correct number in each square of the grid to win! Sudoku has two modes: Pen and Pencil.
You can "outline" multiple assumptions per square. Click the hint button, located on the main menu, to see possible answers highlighted in red. You can also click the progress button to see if you've made any mistakes.
Play with the left mouse button.