Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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