Master Sudoku is one of the most popular puzzle games of all time.
Sudoku is a logic-based, combinatorial number-placement puzzle.
In master sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9.
The game contains 4 levels:
