Sudoku Classic
Sudoku Classic is the full 9x9 puzzle with four levels from Easy to Expert, each guaranteed to have one solution. Use pencil notes, tap a digit to light up every copy of it, and ask for a hint that explains the next logical step. Pause any time and carry on later.
How to play
- Tap a square, then tap a number on the pad.
- Switch on Notes to jot possible digits; they clear themselves when you place a number.
- Fill the grid before you make 3 mistakes.
Tips
- Scan for rows, columns or boxes with only one square left.
- Tap a placed digit to highlight all copies and spot where the next one fits.
- Use Notes on Hard and Expert instead of guessing.
Questions
Can a puzzle need guessing?
No, every board has exactly one solution and can be solved by logic.
What do hints cost?
Each hint lowers your star rating.
Is my progress saved?
Yes, pause or close the page and use Continue on the menu.
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