Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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