Last night I browsed a bit through a Scientific American "Mind" edition (volume 16, number 1) I bought some time ago. On page 96 it got some "Head Games" by Abbie F. Salny. I was able to solve one very fast, a pattern completion puzzle.
Read the rest of Mind games and alternative solutions.
Note that your comment doesn't show up immediately. I review each comment before I add it to this site.
Check the Follow this page option if you want to receive an email each time a comment is posted to this page, including yours. A link to turn this option off will be included with each email.
Internet adresses will be converted automatically. You can use the following notation to specify anchor text for a link: [url=http://example.com/]example text[/url].