Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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