Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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