Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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