Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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