About this tool: Sudoku
Four levels, notes, hints and mistake checking. Your progress is saved in this browser.
Four levels, notes, hints and mistake checking. Your progress is saved in this browser.
Tap a cell, then a number. Notes adds small candidates.
- Difficulty
- Notes
- Hint
- Undo
- Check board
Progress saved in this browser only.
How to use it
- New game
- Tap a cell, then a number. Notes adds small candidates.
- Pause
Frequently asked questions
How do I play?
Tap a cell, then a number. Notes adds small candidates.
Which settings can I choose?
Difficulty · Notes · Hint · Undo · Check board
Will my progress be saved?
Progress saved in this browser only.