Langer's Sudoku Assistant

Invalid Sudoku!

Column 3 is invalid. Go back and make a different choice.

 

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

 

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