Langer's Sudoku Assistant

Invalid Sudoku!

Column 5 is invalid. Go back and make a different choice.

 

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

 

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