Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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