Fill the grid so every row, every column, and every three-by-three box contains the digits one to nine. Each puzzle is generated with a single solution.
9
Opens full screen · keyboard or number pad
How to play
- Click / tap
- Select a cell
- 1-9
- Enter a number
- 0 / Backspace
- Erase
- N
- Toggle pencil notes
- Arrows
- Move selection
- P / Esc
- Pause / Exit