Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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