Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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