Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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