Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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