How to Play
Goal
Fill every empty cell so that each row, column, and 3×3 box contains the digits 1 through 9 exactly once.
How to Play
Click or tap a cell, then choose a digit from the number pad or press 1–9 on your keyboard. Press Delete, Backspace, or 0 to erase.
Pencil Marks
Toggle Notes mode (click the Notes button or press P) to enter small candidate numbers in empty cells. These help you track possible digits.
💡 Tips
Start with rows, columns, or boxes that have the most filled digits. Look for cells where only one digit is possible. Use pencil marks to narrow down candidates.
⌨️ Keyboard Shortcuts
- 1–9
- Place digit
- Del / 0
- Erase
- P
- Notes
- N
- New Game
- U
- Undo
- H
- Hint
- ↑↓←→
- Navigate cells
Statistics
- Games Played
- 0
- Games Won
- 0
- Win Rate
- —
- Current Streak
- 0
- Best Streak
- 0
- Best Time
- —