Brain Puzzles Teasers Websites (http://www.selfgrowth.com/mindpuzzles.html): a list of links leading to several different "brain puzzle" web sites. Also included is a five minute "IQ" test.

The Mind Enhancement Center (http://www.geocities.com/TimesSquare/Ring/9982/frame_index.html): A great problem solving site, filled with many "mind games". Several of the questions from the "problems" page can be attributed to this site.

Brain-Teaser.com (http://www.brain-teaser.com/): Yet another site full of brain-puzzeling fun! You could stay all day here.