Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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