Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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