Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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