Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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