Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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