Microsoft’s version of Sudoku, the popular brain training game. Use logic to fill in numbers 1-9 in each box, row and column. Has all the features found in others in Microsoft’s series, such as custom backgrounds, themes, daily challenges and more.

Click on the pen button, then left-click on a square and drag the cursor up and down to enter your “pen” answer. You can also type in the number. If you’re not sure of an answer, you can select the pencil button instead. Mouse over a square and click on the number(s) you want to enter.

Microsoft Corporation