Langer's Sudoku Assistant

Invalid Sudoku!

Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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