* Time Sudoku Game Features
- 6 levels for Sudoku enthusiast Total 6000 Sudoku (1000 steps)
- Filtering function in Sudoku list
- Hint function
- Can restore after setting branch
- 3 input modes

* Sudoku rules
1. There is only one number from 1 to 9 on the horizontal line,
2. There is only one number from 1 to 9 in the vertical line,
3. Small rectangle 3x3 must contain only one number from 1 to 9.

* Input mode (3 kinds of selection)
1. Button First: Click the number button you want to input first and then select the input cell of Sudoku board.
 - Click the pencil button to activate the hint.
2. Sudoku First: Select the Sudoku cell and click the number button to enter the number.
- Click the pencil button to activate the hint.
3. Pop-up: When you select the Sudoku cell you want to input, the keyboard pops up.
- Click Edit Hint to enter the desired hint.

* Help function
1. View Hint button: Automatically displays all hints in empty Sudoku cells.
- After entering a value in Sudoku, click the View Hint button again to update the hint.
2. Hint Reset button: Reset all hints.
3. Point setting button: Click the Point setting button before entering the estimated value to set the restoration point.
- If you need to click the snap button multiple times, you can set the point in advance to return to the convenient point.
4. Point restore button: Restores to the point you set.
5. Snap button: Return Sudoku cell input immediately.
- If you click it several times, it goes back as much.

* Notice of Privacy and Access Rights
 - Sudoku does not require any personal information or access privileges.