Sudoku:
classic sudoku game: fill in the pending boxes knowing that in each row and each column no number can be repeated. nor can any number be repeated in the 9 existing sub-squares.
Get 10: you must get up to 8 in the first category and 10 in the following ones. It goes up in number when you have two or more adjacent numbers.
the number pressed will go up in level, the rest will disappear, occupying their positions the existing numbers in the higher levels.