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.

 

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

 

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