Langer's Sudoku Assistant

Invalid Sudoku!

Column 7 is invalid. Go back and make a different choice.

 

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

 

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