Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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