The eyeballing game
the first 10 million digits of the square root of 2
Color Test
Two Centuries On, a Cryptologist Cracks a Presidential Code
Rubik's Cube finally solved after 26 years by avid fan
Pew News IQ Score
This is a special intelligence test for Trolls; it will not work for normal human beings
140-year-old math problem solved by researcher
The World`s 10 Most Famous Uncracked Codes

Can you crack the famous unsolved Zodiac 340-character cipher?
Maze Generator
What's this fuss about true randomness?
Play Chess Against the Computer
Tom Lehrer performing at a Maths lecture, some of the only footage of him anywhere on the internet!!!
IQ test (flash) - You have 40 minutes to answer 39 questions.
Sudoku Generator
Daily SuDoku!
HL2 Rube Goldberg