Langer's Sudoku Assistant

Invalid Sudoku!

Column 1 is invalid. Go back and make a different choice.

 

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

 

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