Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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