Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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