Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 2 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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