Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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