Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. Go back and make a different choice.

 

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

 

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