Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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