Inappropriate links

Any inappropriate link (i.e. not math and/or puzzle related) will be deleted. I'd like to keep the forum completely free of ads with the sole exception of ads for books about puzzles, or at least limited to materials appropriate for the site.

For newbies or younger readers:

If you find some of the posts are too difficult to understand please go ahead and ask questions! The people here are willing to help explain things.

Mark