I know this has been covered in a previous post, but i've read through that and i still can't see what i'm missing. What i've got so far is ...
* 4 3 9 8 * 2 5 *
6 * * 4 2 5 * * *
2 * * * * 1 * 9 4
9 * * * * 4 * 7 *
3 * * 6 * 8 * * *
4 1 * 2 * 9 * * 3
8 2 * 5 * * * * *
* * * * * * * * 5
5 3 4 8 9 * 7 1 *
I know i'm probably missing a pair somewhere, but i can't see it for looking.
Thanks