Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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