Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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