Sudoku Pro-Free puzzle game app for iPhone and iPad
The most Professional Sudoku game is coming!
With four different degrees of difficulty and more beautiful frames.
Try and beat other chanllengers arround the world!
Rules: use 1 to 9 to fill the 9 * 9 board, so that each row, each column and nine groups of 3 * 3 small checkerboard all contain the numbers 1 to 9