How to play Sudoku

Fill the 9×9 grid so that every row, every column and every 3×3 box contains the numbers 1 through 9 exactly once.

Choose your difficulty

Easy is ideal for beginners. Medium offers a greater challenge, while Hard removes more starting numbers and requires more careful solving.

Play unlimited Sudoku

Start a new puzzle whenever you want. Your game runs directly in your browser — no registration is required.