Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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