Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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