Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. Go back and make a different choice.

 

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

 

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