Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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