Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 1 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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