Sudoku Mania

Sudoku is a logic-based number arrangement puzzle. The objective is to fill a 9x9 grids with 1 to 9 digit, so that each column, each row, and each of the nine 3x3 sub-grids contain all 1 to 9 numbers.

Fetaure:

* 4 different levels.
* Selected cell highlight with florescent color.
* Highlight wrong move with red color.
* Undo the previous move.
* Clear selected cell.
* Reset the Game.