Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. Go back and make a different choice.

 

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

 

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