Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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