Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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