Classical Sudoku with two mode: Predefined and Random. Very Hack brain.
The classical Sudoku game with high level difficult. Player can choose number from 1 to 9 that every row, column and square (3x3) isn't duplicate.
In game, we have two mode: Predefined and Random.
Predefined mode: Easy, Medium and Hard
Random mode: Easy, Medium and Hard
Be careful, this game is very hack brain. Please relax 30 minutes after playing a round.