Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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