Expand your vocabulary! @liamonpie : @sighkian go to sleep thts what im gna do or u can read larry smut http://t.co/i8rYfjwVNn or play this its addictive http://t.co/2ZWzzO9V03 Most people know the benefits of regular exercise. Whether it’s going down to the gym, taking a run, or going for a brisk walk, exercise is one way of keeping our bodies healthy. However, our bodies are not the only thing that needs regular exercise. It is just as important to keep our brains active and exercise our gray cells too, and there is no better way to give our mind a workout than by playing Knoword.

Expand your vocabulary!

Lateral Thinking Puzzles - Preconceptions

Lateral Thinking Puzzles - Preconceptions Lateral thinking puzzles that challenge your preconceptions. 1. You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus: 1. An old lady who looks as if she is about to die. 2. An old friend who once saved your life. 3.
Brain Teasers, Riddles and Puzzles
Puzzle Pirates

Puzzle Pirates

Puzzle and Pillage - Earn yer Fortune!Deutsch Español I already have a pirate! Puzzle Pirates was selected Best Puzzle PC Game by Metacritic! You can read their review here or check out our many other awards.
Puzzles by Eric C. Harshbarger Puzzles by Eric C. Harshbarger For my whole life I have been interested in puzzles and games, and in the last few years I have been fortunate enough to turn that passion into a profession. I design all types of puzzles: paper-and-pencil brainteasers, physical/manipulative puzzles, number puzzles, riddles, and all-day scavenger hunts for people to explore. My work has been for companies all around the world. Puzzles of mine have appeared in the Perplexcity alternate-reality games (by Mind Candy), in Wired magazine, GAMES magazine, at Lone Shark Games events, in puzzle calendars, on-line treasure hunts, and so forth. I host annual puzzle parties where many of my initial puzzle ideas are play-tested by very patient friends. Ever so slowly I will detail some of my creations on this page.
Cryptography is an ancient mathematical science that was originally used for military communications, and designed to conceal the contents of a message should it fall into the hands of the enemy. Recent developments in cryptography have added additional uses, including mechanisms for authenticating users on a network, ensuring the integrity of transmitted information and preventing users from repudiating (i.e. rejecting ownership of) their transmitted messages. In today's world of electronic commerce on the Internet, the need for secure communications is obviously crucial. Cryptographic technologies provide enterprises with the best mechanisms of protecting their information, without putting the business at risk by exposing it on the Net. What is Encryption? A Simple Guide to Cryptography A Simple Guide to Cryptography
Unsolved Problems There are many unsolved problems in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include 1.

Unsolved Problems

Ciphers & Puzzles

The Perplexus Epic Is The Most Challenging Maze Around The Perplexus Epic Is The Most Challenging Maze Around As a kid, I loved mazes. Every time I went to dinner with my parents, they would make sure the waitress brought one of the kids’ placemats with a maze on it so I could dive in, and solve it. Of course, they were just using my love of maxes to keep me well behaved, and unfortunately for them, I got very good at them very quickly. If they would have had the Perplexus Epic, they could have kept me occupied on many dinner outings.
The Superplexus This is the three-dimensional spherical labyrinth that challenges the limits of your manual dexterity and spatial understanding as you maneuver a 5/8" wooden marble through its entire course. The Superplexus is a complex network of chicanes, multi-planar hairpin turns, spirals, and staircases--even a vortex. Hand made from 3- and 6-ply Finnish birch that form the track, over 400 hours are involved in its construction. The labyrinth is set inside a 36" diameter acrylic sphere affixed to a Jatoba base using a stainless steel gimbaled mount that allows you to tilt the sphere in any direction to guide the marble. The entire track laid out on a straight line is 31' longer than a football field. The Superplexus
30 Questions Guaranteed to Make You Think 30 Questions Guaranteed to Make You Think Instead of giving you information that you want, I’m going to teach you something today by being indirect. Here’s the lesson: everything you need, every revelation I’ve had, and everything that I could possibly write about on this blog, ca n be found inside yourself. As in – with the proper thinking and questioning, you too can come to the conclusions that I’ve come to. You can help yourself instead of depending on me for help. “But Brett,” you ask, “Won’t that render you obsolete?

List of paradoxes

This is a list of paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. Because of varying definitions of the term paradox, some of the following are not considered to be paradoxes by everyone. This list collects only scenarios that have been called a paradox by at least one source and have their own article. List of paradoxes
Click the W links for related Wikipedia articles If you have enjoyed this site, please show your appreciation by making a donation here to the Hope Projects, supporting and accommodating destitute and homeless asylum-seekers in the UK. Catch-22 There was only one catch and that was Catch-22, which specified that concern for one's own safety in the face of dangers that were real and immediate was the process of a rational mind. Orr was crazy and could be grounded. All he had to do was ask; and as soon as he did, he would no longer be crazy and would have to fly more missions.

Some paradoxes - an anthology

Optical Illusions and Visual Phenomena

Op­ti­cal il­lu­sion are fas­ci­nat­ing while teach­ing us about our vi­sual per­cep­tion, and lim­its thereof. My em­pha­sis here is on the beauty of per­cep­tual phe­nom­ena, on in­ter­ac­tive ex­per­i­ments, and ex­pla­na­tion of the vi­sual mech­a­nisms in­volved – to the de­gree that they are un­der­stood Be­friend­ing mo­bile de­vices: >40 in­ter­ac­tive demos now with­out Flash, but re­quires up-to-date browser ver­sions. Don’t let it irk you if you don’t see all the phe­nom­ena de­scribed.

Test Your Brain With Brain Teasers and Games

Below you can find the Top 50 Brain Teasers and Games that Sharp­Brains read­ers have enjoyed the most. It is always good to learn about our brains and to exer­cise them! This is our selec­tion of fun and enlight­en­ing brain teasers for adults of any age. Fun exper­i­ments on how our brains work 1. You think you know the col­ors?
Gotcha! But the rest of these optical illusions are on the level. What are illusions? Illusions trick us into perceiving something differently than it actually exists, so what we see does not correspond to physical reality.

NIEHS Kids Page -- Optical Illusions

Very Difficult Analytical Puzzles
Sliding Block Puzzles
Kuku Impenetrable Metal Ball Puzzle
Magic IQ Gift Box
Fiendish Japanese Pocket Puzzle
Creativity Challenge . Creativity . PBS Parents
NewMedia Puzzler