Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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