Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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