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Engage your mind with a classic puzzle game where you fill a 9x9 grid with the numbers 1 through 9. The challenge is that each number can only appear once in each row and column. Your goal is to correctly place the right number in every square to complete the puzzle successfully. Sudoku offers two enjoyable modes: Pen and Pencil, allowing you to choose your preferred way to play.
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.