Settings
Configure your Sudoku experience to match your preferences.
Accessing Settings
Click the gear icon in the navigation bar to open the settings panel.
Display Settings
Show Timer
Toggle the timer visibility:
- On: See your solve time while playing
- Off: Solve without time pressure
Show Mistake Counter
Display the number of mistakes you've made during the current game. When enabled, you can also set a mistake limit that ends the game after a certain number of errors.
Show Progress
Shows a percentage indicating how much of the puzzle you've completed.
Board Size
Adjust how large the Sudoku board appears:
- Choose from extra small to extra large
- Useful for different screen sizes and preferences
Controls Position
Choose which side of the board the number pad appears on (left or right).
Celebration
Select the animation that plays when you complete a puzzle:
- Explosion, fireworks, cannons, stars, flowers, numbers, or minimal
Highlighting
Highlight Related Cells
When you select a cell, highlights all cells in the same row, column, and 3×3 box.
Highlight Same Number
When you select a cell containing a number, all other cells with the same digit are highlighted.
Show Errors
Immediately highlights cells in red when you enter a conflicting number. Turn this off for a more challenging experience.
Limits
Hint Limit
Restrict the number of hints you can use per game. Helps build solving skills without relying on assistance.
Assistance
Validate Guesses
Instantly checks if your entry matches the solution. Incorrect guesses are counted as mistakes.
Auto Candidates
Automatically displays small candidate numbers in empty cells, showing all possible values based on the current puzzle state.
Auto-Remove Notes
When you place a number, automatically removes that candidate from notes in all related cells.
Theme
Theme Selection
Choose from our collection of preset themes or create a custom theme:
- Filter by light, dark, or favorites
- Search themes by name
- Mark favorites for quick access
See Themes for details.
Randomize Theme
After completing a puzzle, automatically switch to a random theme based on your preference:
- Off, on, favorites only, light only, dark only, or auto
Appearance
Border Settings
Adjust the visibility and thickness of grid lines:
- Border intensity: How prominent the thick grid lines appear
- Exterior border: Width of the outer border and box separators
- Interior border: Width of lines between cells
Font Settings
Customize the fonts used in the game:
- Font family: Choose the font for the interface
- Board number font: Optionally use a different font for numbers on the board
- Board number size: Adjust the size of digits (small to extra large)
- Board number weight: Adjust the thickness of digits (thin to bold)
Reset Settings
In the Danger Zone, you can reset all settings to their default values. This cannot be undone, so use with caution.