Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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