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 by showing a rectangle made from 5 pieces. The rectangle fits snugly in a black plastic frame. Next, you show a sixth piece and combine it to the other five to make a larger rectangle. This rectangle also fits perfectly inside the frame. Finally, you show an even larger seventh piece, add it to the other six to form a rectangle. It, too, fits into the frame. How is it done? (If you know, please don't reveal the secret in the comments.)
Created by esteemed riddler Edwin F. Meyer, co-author of The Gedanken Institute Book of Puzzles. (TED-Ed)
These Japanese single color jigsaw puzzles are appropriately named “Pure Hell.” They’re available with 1,000 or 2,000 tiny pieces, black or white. Pure Hell jigsaw puzzles (Amazon via Laughing Squid)
Amazon is selling this cool-looking speed cube for $5.21. I love the colors. I have been trying to solve Rubik’s Cube for decades. I’ll get it one day!
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