Blue Reef Sudoku

In Blue Reef Sudoku, play the classic number game that everyone loves. A standard Sudoku game is set against a beautiful blue coral reef. The game starts out easy, with each empty square having the number possibilities listed in white letters. You can change your options on the right side of the screen. Go from a small Sudoku board to a large one. Change the mode from easy to normal or hard. The object of the game is simple. You have to make sure that there is one of each number from one to nine in each square, in each horizontal line, and in each vertical line.