Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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