Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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