Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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