Brain Amusement

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FUN

http://www.jaapsch.net/puzzles/index.htm

Jaap's Puzzle Page

UPDATED 03/03/2013 .

Blue Eyes - A Logic Puzzle

If you like formal logic, graph theory, sappy romance, bitter sarcasm, puns, or landscape art, check out my webcomic, xkcd . Blue Eyes: The Hardest Logic Puzzle in the World A group of people with assorted eye colors live on an island. http://www.xkcd.com/blue_eyes.html
To expand your mind you need to learn new facts and develop new modes of thinking that will make the information that you already know more useful. Solving the following problems requires a combination of world knowledge, mathematics, common sense, logic, and science (chemistry, physics). This is not an IQ test.

Expand Your Mind - Puzzles and Brain Teasers

http://www.scientificpsychic.com/mind/mind1.html
http://www.qbyte.org/puzzles/ Welcome to my selection of mathematical puzzles.

Nick's Mathematical Puzzles

miscellaneous (toys, brain training, etc.)

http://puzzle.dse.nl/teasers/index_us.html

The Ultimate Puzzle Site - Brain-Teasers

F ive sailors survive a shipwreck and swim to a tiny island where there is nothing but a coconut tree and a monkey.

Ponder this | pages

http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/pages/index.html You are cordially invited to match wits with some of the best minds in IBM Research.