Langer's Sudoku Assistant

Invalid Sudoku!

Column 2 is invalid. Go back and make a different choice.

 

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

 

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