Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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