Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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