Question 1

How do I play Sudoku?

Accepted Answer

Fill the 9×9 grid so every row, column, and 3×3 box contains digits 1–9.

Question 2

Is Sudoku free to play?

Accepted Answer

Yes! Sudoku is completely free to play online with no sign-in required.

Question 3

What difficulty levels are available for Sudoku?

Accepted Answer

Sudoku supports easy, medium, hard, expert difficulty levels.