Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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