Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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