Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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