Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

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

 

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