Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 3 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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