Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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