Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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