Open Sudoku Free, then tap the 'New Game' button on the main screen to select your preferred difficulty level and start playing.

When starting a new game, choose from Easy, Medium, or Hard options on the main screen to set your desired difficulty.

During gameplay, you can input numbers, use notes, undo/redo moves, and access hints via the intuitive interface at your fingertips.

Yes, tap the 'Hint' button during a puzzle to receive a suggestion or guidance to help progress.

Tap 'New Game' from the main menu, then select your preferred difficulty—Easy, Medium, or Hard—to start a suitable puzzle.

Sudoku Free offers all features for free; however, you can upgrade to premium via Settings > Subscription for additional hints and features.

Go to Settings > Subscription within the app to view and subscribe to premium plans for additional functionalities.

Yes, subscribing to the premium plan from Settings > Subscription removes ads and unlocks extra features.

Try closing and reopening the app, ensure it is updated to the latest version, or contact support via Settings > Help for assistance.