Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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