Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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