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Keys
| Arrow keys | Move the cursor around the Sudoku grid |
| 1-9 | Fill digit in cell |
| Tab | Move to the right |
| Shift + Tab | Move to the left |
| Backspace | Clear cell |
| Spacebar | Clear cell |
| Delete | Clear cell |
| Ctrl + Z | Undo move |
| Erase | Clear all digits from the Sudoku grid |
| C | Check solution |
| Ctrl + S | Save game |
| ALT + 1-9 | Highlight Digit |
| The following keys require that "Allow pencil marks" is enabled from the options menu: | |
| V | Clear all pencil marks |
| 1-9 | When digit already present in cell - make the digit a pencil mark |
| 1-9 | When digit is a pencil mark - remove the pencil mark |
| 0 or H or Enter | Fill pencil marks automatically |
Clear all numbers from the grid?
Clear pencil marks from all cells?
Game Options
| General Options | Highlight and Colors | Check Solution Style |
Stop and go back to the Homepage?
Print Normal
|
Print Large
|
Start a Random Sudoku
 Easy |
Medium | |
| Hard |
Evil |
Clear all numbers from the grid?
Clear all numbers from the grid?
Or start a new random Sudoku:
| Easy |
Medium | |
| Hard |
Evil |
Game Paused
You Have Been Promoted!
Save Game
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