Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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