Support Center

How do I start a new game?

From the home screen, select your preferred difficulty level (Easy, Medium, or Hard) and tap "New Game" to begin a fresh puzzle.

What difficulty levels are available?

We offer three difficulty levels:
• Easy: Perfect for beginners, with more numbers revealed.
• Medium: A balanced challenge for regular players.
• Hard: For experienced Sudoku enthusiasts seeking a real challenge.

How do I use hints?

Tap the hint button (💡) during gameplay to reveal a correct number for an empty cell. Use hints wisely to learn solving strategies!

Which Sudoku variants can I play?

We offer 8 exciting game modes: Classic 9x9, Killer Sudoku, Sandwich Sudoku, Mini Sandwich Sudoku, Diagonal Sudoku, Little Killer, Mega 16x16, and Mini 6x6.

What is the Daily Challenge?

Every day, a new unique puzzle is available for all players worldwide. Complete daily challenges to build your streak and compete on the leaderboards!

How do I use notes / pencil marks?

Toggle the pencil/notes mode to add small candidate numbers to a cell. This helps you track possible numbers for that spot. Notes automatically update if you enable "Smart Notes" in settings.

Is my progress saved automatically?

Yes! Your game progress is automatically saved. You can close the app and resume your puzzle anytime.

How does iCloud sync work?

Your statistics, completed puzzles, and settings are synced across all your devices signed into the same iCloud account.

What's included in Premium?

Premium unlocks:

• ✨ Unlimited hints
• 🎮 Additional game variants (Diagonal Sudoku, Killer Sudoku, Mega Sudoku, Sandwich Sudoku)
• 📊 Advanced statistics
• 🚫 Ad-free experience
• 🎨 Exclusive themes

How do I subscribe to Premium?

Tap the Premium button on the home screen or go to Settings to view subscription options.

How do I cancel my subscription?

Subscriptions can be managed through your Apple ID settings:

1. Open the Settings app on your device
2. Tap your name at the top
3. Tap "Subscriptions"
4. Select "Sudoku - Brain Puzzles"
5. Tap "Cancel Subscription"

How do I restore my purchase?

If you've purchased a Premium subscription or Lifetime access but don't see your benefits, go to Settings and tap "Restore Purchases".

How do I reset my progress?

To reset your statistics and game progress, go to Settings > Data Management > Reset Progress. Warning: This cannot be undone.

I found a bug, how do I report it?

We appreciate your help! Please email us at me@dygao.io with details about the issue and screenshots if possible.