Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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