Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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