Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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