The main objective of the game is to successfully complete the grid with numbers 1 to 9. The grid consists of 9 identical squares or regions each with 3x3 small boxes.

Some of the numbers have already been prepositioned and the challenge is to fill the blank boxes. This is done by making sure that a number only appears once in the same line either vertically or horizontally.

Each 'Sudoku' has a unique solution. Three (3) levels of increasing difficulties will improve your skills in solving the puzzle. Note the number of 'stars' next to each 'Sudoku' puzzle indicates the level of difficulty.