Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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