Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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