Sudoku classic is a logic-based, combinatorial number-placement puzzle game. You need to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid contains all of the digits from 1 to 9 to win the game.

FEATURES:
- Different difficulties ( Easy - Medium - Hard - Expert )
- Hundreds of puzzles for each difficulty
- Pencil
- Undo
- Hint
- Erase
- Timer (optional)
- Clean interface and smooth controls
- Phones and tablets support

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