Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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