Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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