Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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