Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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