Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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