Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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