Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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