Chimera High Ability Riddle Test -
Published in several Mensa & other high IQ society newsletters, & previously used as an admissions test for the Collegium High IQ Society. Answers & ranking scale are available online.
The Enigmus Riddle Exam - Try to solve 30 educational and enjoyable riddles. Gives an estimated IQ score.
Kim's Riddles -
Be sure to give this Canadian author's brain teasers a try - they're fun, and some of them are pretty tough!
Riddles Personified -
These fun riddles conceal the names of famous people. See how many you can solve!
More Riddles:
Clue Chaser - A new site where you solve fun puzzles to win prizes. A message board is provided to allow discussion of the puzzles with other players. The first to solve the last puzzle wins!
Riddles & Jokes -
Over 1,000 riddles & over 3,000 clean jokes!