In this game, you need to fill a 9×9 grid with numbers so that each column, row, and small square contains digits from 1 to 9. You can use hints during the game. There are three difficulty levels available: easy, medium, and hard. The main rule of Sudoku is that numbers must not repeat in rows columns or small squares There are three difficulty levels available easy medium and hard The higher the difficulty the fewer numbers are filled in at the start You can use hints to free html5 games for your website, Puzzle, Sudoku,mobile
