Sudoku Classic description

The classic Sudoku game with a simple interface.
Two styles enter numbers - buttons and a numeric keypad.
You can choose one of the three colors - blue, brown or gray,.
Five levels of difficulty for a comfortable game for both beginners and strong players.
All fields are generated randomly, so every time you have a new puzzle game with a unique solution. The ability to create symmetrical puzzles.
Unfinished game is saved and you can continue it at any time.
"Hint" button opens one digit. Five tips lower the difficulty level of the game.
At the level of "Easy" is not working.
Sudoku is entirely in English and free.