Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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