Sudoku
Fill the 9×9 grid so every row, column and box holds 1–9. Solo
How to play Sudoku
Goal
Fill every empty square so each row, column and 3×3 box has the digits 1 to 9 exactly once.
Step by step
- Pick a difficulty: Easy, Medium, Hard or Expert.
- Tap an empty square, then tap a digit.
- A wrong digit shows up right away and counts as a mistake. Three mistakes and you lose.
- Turn on Notes to jot small candidate digits in a square.
- Stuck? A hint fills in the selected square. You get three, and each adds 30 seconds.
- Daily: the same puzzle for everyone today, one per difficulty. Free play: a new puzzle every time.
How to win
Fill the whole grid to win – your time is your score. No mistakes and no hints gives 3 stars; each mistake costs a star, and hints cap you at 2.
Tips
- Undo removes a wrong digit, but the mistake still counts.
- Placing a correct digit clears it from the notes in its row, column and box.
- Pause hides the grid and stops the clock.