Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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