Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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