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

 

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