Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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