Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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