Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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