Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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