Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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