Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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