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.

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

Puzzle #71

Difficulty: Medium

Give me another puzzle:

Easy Medium Hard Very Hard