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.

 

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

 

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