Boing Boing 

Watch this guy solve a 7x7 Rubik's cube in record-breaking time


Australian speedsolver Feliks Zemdegs has set a new official world record for the shortest time in which to solve a 7x7 Rubik's cube: 2:23.55.

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Pill-popping panic - a good brain teaser


A good puzzle from Futility Closet.

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Isis Adventure: Worst. Puzzle. Ever.

The thing positively oozes mystery and the promise of an exciting intellectual adventure. Alas.Read the rest

Puzzle sheds light on government policy, corporate America and why no one likes to be wrong


Here's a fun puzzle from the NY Times. Try it then discuss your experience in the comments.

Can you solve the 3-switches problem?


Alex Bellos' Monday puzzle in The Guardian is the Three Switches Probem:

Downstairs in a house are three identical on-off switches. One of them controls the lamp in the attic. The puzzle is to work out which switch controls the lamp.

The rules are as follows. You are allowed to manipulate the switches all you like, and then you are allowed only one trip to the attic. How do you do it?

The famously difficult green-eyed logic puzzle

"One hundred green-eyed logicians have been imprisoned on an island by a mad dictator. Their only hope for freedom lies in the answer to one famously difficult logic puzzle. Can you solve it? Alex Gendler walks us through this green-eyed riddle."

Play the number puzzle that launched a thousand clones, now free


My mom loves number puzzles, so I recommended her the laudable Threes, which would go on to win Apple's 2014 game of the year. But it was already too late: The clones had gotten to her first.

She was playing 2048, which was being cheered in the press as "the indie hit made in just one weekend". She didn't know it was a free public mod of 1024, which was a free clone of Threes, a finely-tuned experience designed by the well-respected Asher Vollmer (with well-respected artist Greg Wohlwend), and sold on the App Store for $2.99.

One year after the puzzling and provocative Threes cloning controversy—where the free clones ultimately reached many more players than the premium original—the developers are offering a new free, ad-supported version of the game. Vollmer tells the Verge that Threes' paywall "has always felt like a misstep."

Try the game that started it all for free on the App Store or Android Marketplace. And if you like Vollmer and Wohlwend's work, also check out TouchTone, a puzzle game about the surveillance state.

Math puzzler: can you make a rectangle with one cut?

Presh Talkwalkar of Mind Your Decisions challenges you to "cut the shape into two pieces, using all the area, that can form a rectangle."

WATCH: World record smallest 7x7x7 Rubik's Cube

Puzzle enthusiast Tony Fisher demonstrates a new 3.4 cm-wide cube designed by Matt Bahner. It's half the size width of the original 7x7x7 V-Cube.

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Friday fun: make a paradox card

paradox-cardThe amusement I get from looking at this weird-looking card is worth more than the 60 seconds it took me to make it. No tape, glue, or hidden cuts are needed. If you can't figure out how to make one, someone in the comments will show you how to do it.

Mystery cube-in-a-cube puzzle woodworking project

All you need to make this floating cube-in-a-cube is a cube of solid wood, a drill press, a forstner bit, and a sharp knife. I want to try this!

What is the deal with this parking lot numbering system?


I found this puzzle on Miss Cellania's website.

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The fascination of Rubik's cube

Dan Nosowitz on the obsession with a mechanical toy invented 40 years ago--"simple in theory, it can be tremendously complex to conquer" -- and Google's obsession with it in particular.

New Disruptors 70: Puzzle Maker Chris Yates

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Chris Yates is a polymath. A sculptor, artist, woodworker, cartoonist, entrepreneur, dog-kennel assembler, musician, and more. He's best known now for his handmade jigsaw puzzles. He's on the show to talk about his zigzag path to making a niche for himself.

The New Disruptors: RSS | iTunes | Download this episode | Listen on Stitcher

This episode is sponsored by:

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Interactive version of EFF's NSA crossword

Here's a nice little Christmastime Creative Commons and free/open source software success story: yesterday, I posted the Electronic Frontier Foundation's NSA-themed crossword puzzle, which was CC licensed. Shortly after, TheDod posted an interactive version of the puzzle to Github, forking an interactive crossword program written by the Boston Globe's Jesse Weisbeck.

Interactive edition of EFF's Xmas 2013 NSA crossword puzzle (Thanks, Dave!)

Celebrate the crossword's centenary with EFF's NSA-themed crossword puzzle

Dave from the Electronic Frontier Foundation sez, "Tomorrow is the 100th anniversary of the crossword puzzle, so EFF designed one to test your knowledge of NSA surveillance. EFF Global Policy Analyst Eva Galperin was able to defeat the puzzle in under 15 minutes, but a few of the questions stumped even some of our experts."

Update: Shortly after this was posted, TheDod posted an interactive version of the puzzle to Github, forking an interactive crossword program written by the Boston Globe's Jesse Weisbeck.

Crossword Puzzle: What Did We Learn About the NSA This Year? (Thanks, Dave!)

Regular expressions crossword

On, a crossword puzzle you solve by interpreting regular expressions.

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