Sudoku - world famous brain puzzle!

*** Let's enjoy world famous addictive puzzle game! *** Sudoku is a logic-based,combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid contains all of the digits from 1 to 9. Not only ordinary number place puzzles, this app include many unique fun puzzles such as "animal pla…