Classic 9×9 Sudoku
Classic Sudoku rules on a standard 9×9 grid with 3×3 blocks.
About this Sudoku page
Each row, column, and 3×3 box must contain digits 1–9 exactly once.
FAQ
Everything you need to enjoy Sudoku with calm, focused play.
How do I play Sudoku online?+
Fill each row, column, and 3×3 box with digits 1 to 9 exactly once. Tap or click a cell, then choose a number from the keypad.
Is an account required to play Sudoku?+
No. You can start immediately in your browser without creating an account.