More Sudoku

Sudoku is a mathematical logic game.
The object of the game is the placement of numbers from 1 to 9 in each of the empty cells in a 9x9 grid, consisting of 3x3 subgrids called regions.

Characteristics:
• Three difficulty levels
• Night Mode
• Statistics to keep track of your progress
• Possibility to undo and redo movements without limit
• autofilling annotations
• Option Auto Clear Annotations