Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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