Sudoku

Fill the grid so every row, column and box holds 1 to 9. Three difficulties, pencil notes, hints, undo and saved progress.

A calm, classic number puzzle. Every puzzle is freshly made and has exactly one solution.

**Easy** puzzles can be solved by spotting where a number must go. **Medium** asks you to scan rows, columns and boxes. **Hard** needs pencil notes and sharper logic..

- Tap a cell, then tap a number. Turn on **Notes** to pencil in candidates.

- Undo any move, erase a cell, or ask for a hint when you're stuck.

- Your puzzle is saved as you play, so you can leave and come back.

Keyboard: arrow keys move, 1 to 9 place a number, Shift + number writes a note, N toggles notes, Z undoes, H gives a hint, Esc opens the menu.

Controls

Keyboard, Touch

Plays on

Computers, phones and tablets

Screen

Landscape

Updated

15 Oct 2026