Sudoku
Sudoku puzzle, free to play online. The classic number puzzle, from easy to expert.
Fill the grid so every row, column and 3 by 3 box contains the numbers 1 to 9 exactly once. Use notes to track candidates and hints when you get stuck. A fresh daily puzzle arrives every day. Solve with no mistakes and no hints for three stars, and climb the solver ranks from Beginner to Grandmaster.
How to play
- Select a cell, then tap a number to fill it.
- Every row, column and box needs 1 to 9 exactly once.
- Turn on notes to pencil in possible numbers.
- Three mistakes and the puzzle is over.