The Knight's tour is a traditional chess problem where a lone knight is placed on a chess board and must visit each square only once. You can play this perfectly simple free implementation created by u/psrwo on Reddit. The source code is at github. The knight is randomly placed at the outset.
I can't visit more than fifty-something squares, because I'm terrible at stuff like this.
Tenyo is a Japanese magic trick company that’s been around since 1960. They are well known for making clever props. (My friend Richard Kaufman, who often writes for Boing Boing, wrote a 1,400-page two-volume set about the company, called Tenyoism) Here’s a Tenyo puzzle trick called The Perpetual Puzzle (It’s available on Amazon). You start […]
Mathematician, artist, and engineer George W. Hart of “Möbius strip bagel” fame has recently been playing with a laser cutter to create head-spinning warped-grid jigsaw puzzles. He came up with an algorithm to generate the initial patterns but “the real fun is step 2,” he says, “using a geometric transformation to warp things.”
Portland Laser Co. offers a puzzle based on Joy Division’s famous cover to Unknown Pleasures, a plot of signals emitted by pulsar CP 1919. Yours for $50. One of the most iconic album covers of all time, made into a puzzle.
So…exactly how many times a day are you singing Happy Birthday to your sink? Unless you’re among the most germaphobic among us, it’s unlikely you ever thought the simple act of handwashing would start to take on such a central role in our daily lives. Of course, with all the touching and such, bar soap […]
Paralysis by analysis. It’s the phenomenon that happens when you’re so stuck on thinking through all the ramifications of your actions that you don’t actually take action in the first place. That can happen with all this free time you’re spending stuck inside your house. With literally every home-bound option available to you, it’s easy […]
At this point, it’s every single person’s responsibility to reduce their own carbon footprint and transition to a more sustainable lifestyle. But if you consider the grim fact that the biggest culprit of greenhouse gas emissions from human activities in the U.S. is burning fossil fuels for electricity, things, like pivoting to metal straws and […]