Help Center

🚀 Getting Started

• What is Killer Sudoku?
• How do I play?
• How do I change the difficulty level?

🎮 Playing the Game

• How do I make notes?
• How do I use hints?
• How do I delete a number entered by mistake?
• How do I erase all the numbers and notes that I've entered?
• Why do the numbers I enter look so small?
• How is your score calculated?

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🧩 Solving and Rules

• What if a Killer Sudoku puzzle seems unsolvable?
• How do I know if a number has been placed in all the necessary cells?

⚙️ Settings

• How do I disable sounds?
• How do I change the background?
• How do I change the language?

💳 Purchases and Ads

• How do I remove ads?
• How much does it cost to remove ads?
• Having issues with ads?
• What do I do if I made a purchase by mistake?

💾 Data and Progress

• How is my progress saved?
• How do I transfer my progress to a new device?
• How do I delete my data and game progress?
• Privacy Rights and Options