Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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