If you have a puzzle site and would like to exchange links with us please email: The Logic Zone.

3Smart Cubes - IQ Tests

Check out our range of PhD certified IQ tests. We also have loads of other fun tests that you would love.



A unique collection of puzzles, games and optical illusions, with thousands of puzzles, over one hundred awards and millions of visitors per year.



Braingle has tons of brain teasers, puzzles and free online games. It also has a large vibrant community of smart people who contribute to the site in many ways.

Brain Teasers

If you want to test your brain and have fun, then you found the right place. You will crack some of my favorite brain teasers, all sorted into special categories. For instance, you can start with a collection of logic puzzles. And, if my brain teasers seem like an easy child's play, check links and download for more puzzles, IQ tests, and logic games.

Brain Teasers
Extreme Intellect

Extreme Intellect

A resource for IQ, family education, gifted kids, parents of gifted kids and teachers of talented education. IQ tests and the topics of genius IQ Smart Kids and Intelligence are included along with homework study and reference pages.

Extreme Intellect

Mystery Master

Home of the ultimate logic puzzle solver, the Mystery Master program! Every puzzle in their collection of logic puzzles has been solved by the Mystery Master program. They offer a variety of Online Logic Games, Math Puzzles, Karaoke files & recently added a section on Mathematica.

PlusNet broadband


In need of a good, value for money, UK Internet Service Provider? Try PlusNet. PlusNet was founded in 1997 and is now a division of BT. They have won many awards over the years including: Best Overall Customer Satisfaction and Best Customer Service. If you call them, you get to speak to a real human being based in Sheffield, who will bend over backwards to help. Please let them know 'thelogiczone' recommended them to you.

PlusNet broadband


The world's best resource for puzzling on the Internet - is about Puzzles, Illusions, Tricks, Toys, and everything around all these Great, Funny, Entertaining, Intellectual and Educational Things.