How To: Win Impressively At Gameshows Using Simple Maths

Here's a fun clip from BBC Two's collegiate quiz show University Challenge. Host Jeremy Paxman asks the contestants what day of the week it will be 100 days after Monday. A player named Binnie responds quickly: "Wednesday." Paxman's face contorts. "How did you know that?" he asks, astonished. » 2/11/15 2:40pm 2/11/15 2:40pm

Watch Man Solve World's Largest Rubik's Cube—And Try Not To Get Dizzy

If watching the rapid flip of the colors doesn't make you queasy, take a gander at this astounding timelapse video, which shows Kenneth Brandon tackling a 17x17x17 Rubik's Cube-type puzzle. He speeds the whole thing up, so that the puzzle goes from scrambled to solved in just six minutes. » 1/02/15 2:40pm 1/02/15 2:40pm

Can You Solve 'The Hardest Logic Puzzle In The World'?

You're reading the first installment in a brand new puzzle series here at io9 – and what better way to kick things off than with the world's most difficult logic puzzle? » 10/05/14 10:30am 10/05/14 10:30am

Enter The Maze of Games, A Novel Made Of Puzzles

The Maze of Games plunges you into a tale of Victorian-era siblings lost in a strange, fantastical maze filled with more than 50 linked puzzles, goaded by the ghastly Gatekeeper. Author and puzzlemaker Mike Selinker gave us a peek into the maze, and shared a clip of Wil Wheaton's audioboook narration. » 8/05/14 8:00am 8/05/14 8:00am

National Geographic Bets on Science in Las Vegas

I recently spent two days on location in Las Vegas with certified mad men of science Jason Silva and Tim Shaw of the National Geographic Channel's Brain Games and None of the Above. We were somewhere off US95, on the edge of the desert, when the cognitive illusions began to take hold. » 1/05/14 1:00pm 1/05/14 1:00pm

Watch an entire building transform into a playable Rubik's Cube

Spanish artist and designer Javier Lloret has managed to convert Austria's Ars Electronica Center into a gigantic and functional Rubik's Cube. Called Puzzle Facade, it works by sending signals to a ready-built LED-lit wall using a 3D-printed interface-cube. » 12/04/13 7:20am 12/04/13 7:20am

How To: Make geometric models out of straws and coffee stirrers

Over at Make Magazine, Iann Gonsher shares this remarkably simple (not to mention totally free, if you count your latte as admission) method for building cool geometric models. "The baristas don’t tend to mind," he writes, "especially if you tip generously." » 10/15/13 2:20pm 10/15/13 2:20pm

World's Most Frustrating Puzzle Has No Edges and 5 Extra Pieces

Whoever made this puzzle is a bad person. A terrible, rotten person with an ugly soul. May karma come crashing down on your head. » 8/29/13 1:53pm 8/29/13 1:53pm

Why Google banned brainteasers from their interview process

How many piano tuners are there in the city of Chicago? As recently as a couple of years ago, knowing how to approach a brainteaser like this might have helped land you a job at Google. The company used to pose stumpers like this in a lot of their interviews, but the practice was recently banned. In a recent interview… » 6/25/13 3:30pm 6/25/13 3:30pm

Watch people constructing a 26-foot-high, fully playable Rubik's Cube

Over at the Pacific Science Center in Seattle, a group of artists from GroovLabs are building a giant, playable Rubik's Cube as part of the museum's "Puzzle Palooza," starting October 1. There is truly nothing more magnificent than this Cube. » 9/15/11 11:54am 9/15/11 11:54am