The annual Melbourne University Puzzle Hunt is back - and this time they need your help fending off villians with your puzzle-solving abilities. Anyone from anywhere in the world can compete in teams of 1 to 10 people (or you can see the puzzles for yourself and play at home). [more inside]
posted by divabat on Apr 10, 2011 - 7 comments

Fun and games with mathematics and mathematical puzzles (e.g. heart basket, Rubik's Cube, Rubik's Magic, hypercubes, and more) in both English and (with yet more content in) German.
posted by Blazecock Pileon on Feb 18, 2008 - 6 comments

64=65? there must be some kind of trick to this, right?
posted by pyramid termite on Aug 18, 2004 - 30 comments

The Paso Doble is an eerie little puzzle game, something like a De Chirico painting come to life.
Oh yeah, a new Mersenne prime was discovered today by a 20-yr old.
Both links courtesy of mathpuzzle.com
(will i ever beat joseph devincentis?!)
posted by vacapinta on Dec 6, 2001 - 12 comments