How to play sudoku

Fill in the entire grid so that each digit in the range 1-9 appears exactly once in each row, column, and box.

How to fill the grid

It's easy! Simply click on a square. It should be highlighted gray. Now, hit the corresponding number key on your keyboard.

To remove a mistake, select the square by clicking on it and hit delete.

      3 2     5 6
    2 7 9   8    
  9     5       2
        7     3 5
  5 1       7 8  
7 8     4        
8       1     6  
    6   8 5 3    
9 4     3 7      

Puzzle #78

Difficulty: Very Hard

Give me another puzzle:

Easy Medium Hard Very Hard