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Time-Filling Sudoku Game Features:

• 6 levels totaling 6000 Sudoku puzzles for Sudoku enthusiasts (1000 puzzles per level)
• Support for filtering function on Sudoku lists
• Hint feature available
• Option to set and restore checkpoints
• 3 input modes

Sudoku Rules:

1. Each row must contain numbers 1 to 9 without repetition
2. Each column must contain numbers 1 to 9 without repetition
3. Each 3x3 square must contain numbers 1 to 9 without repetition

Input Modes (select one of the three):

1. Button First: Select the number button you wish to input first, then choose the cell in the Sudoku board
If the pencil button is activated, you can input hints
2. Sudoku First: Click on a Sudoku cell first, then select a number button to input the number
If the pencil button is activated, you can input hints
3. Popup: Keyboard pops up when selecting the Sudoku cell you wish to input
Click on Hint Edit to input desired hints

Help Features:

1. View Hint Button: Automatically display all hints in empty Sudoku cells
   • After entering values in the Sudoku, clicking the View Hint button again will update the hints
2. Reset Hint Button: Reset all hints
3. Set Point Button: Before entering approximate values, clicking this button establishes a restoration checkpoint
   • If multiple undos are needed, setting a checkpoint beforehand allows for easy restoration to that point
4. Restore Point Button: Restores to the set checkpoint
5. Undo Button: Reverts Sudoku cell inputs back by one step
   • Click multiple times to undo several steps

Privacy and Access Rights Notice:
- Time-Filling Sudoku does not require any personal information or access permissions.