Calibron 12 - Theodore Edison's 1933 Wooden Packing Puzzle
Calibron 12 - Theodore Edison's 1933 Wooden Packing Puzzle está agotado y se enviará tan pronto como vuelva a estar disponible.
Delivery and Shipping
Delivery and Shipping
All standard orders normally ship within 1 business day.
Custom orders normally ship within 2 business days.
Calibron 12 - Theodore Edison's 1933 Wooden Packing Puzzle
Descripción
Descripción
Calibron 12 is a wooden packing puzzle designed in 1933 by Theodore Miller Edison, the youngest son of Thomas Edison, an MIT-trained physicist who held more than 80 U.S. patents and founded Calibron Industries in West Orange, New Jersey. We build this faithful reproduction at Creative Crafthouse, our family-owned wooden puzzle and game shop, and make every set in our Hudson, Florida workshop.
The goal is to arrange twelve wooden pieces into a single square, and only one arrangement works. The original 1933 wording ships with every set and is deliberately misleading: arrange the twelve blocks to form a single large rectangle. Any rectangle, including the square, will do, provided every block is used. In practice only one solution exists, and it is the square. Calibron 12 anchors our Impossible Puzzle Series, carries our 11 out of 10 difficulty rating, and is widely considered one of the hardest wooden packing puzzles ever designed. Most solvers work at it for days or weeks, and some never finish.
Each piece is laser-cut from ash, maple, walnut, and other fine woods, with its dimensions engraved into the wood so the markings will not rub off with handling. The assembled tray measures 9.5 by 7.5 by 0.75 inches, a substantial desk-sized piece rather than a pocket puzzle. The set includes the wooden tray base, all twelve pieces, a fitted wood cover, and a printed solution sheet for when you have exhausted every other idea. It ships unsolved. Standard orders ship in one business day and personalized orders in two.
We laser-engrave the wood cover with a name, a date, or a short message, up to 45 characters, so the puzzle can double as a keepsake. It is a favorite gift for engineers, mathematicians, puzzle collectors, STEM teachers, and dads who want a challenge that lasts longer than an afternoon.
Recognition. Calibron 12 was the subject of The Mystery of the Calibron Twelve Block Puzzle, a research paper by George Miller and Nick Baxter presented at the Gathering 4 Gardner G4G12 conference in Atlanta, 2016. The paper traces Theodore Edison's original 1933 design and the rediscovery of its precise piece dimensions, and documents that Edison issued the original in three versions, identical in their twelve pieces but each packed with a differently sized black spacer so the closed box never revealed the solution. David Janelle of our Hudson, Florida workshop is named in the paper's acknowledgements. Read the paper.
Want another puzzle at this level? Try the Einstone II, or browse the full Impossible Puzzle Series.
Designed by Theodore Edison, 1933. Handcrafted today by Creative Crafthouse in Hudson, Florida.
Personalize it!
Personalize it!
Add a personalized laser engraving to your puzzle or game.
- Perfect for gifts
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Payment & Security
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Product Specifications
- Materials
- Wood, Ash, Maple, Walnut
- Difficulty Level
- Impossible
- Age Range
- Adults (18+ years)
- Piece Count
- 12
- What's Included
- Puzzle base (1), Puzzle pieces (12), Wood cover (1), Instructions and solution sheet (1)
- Cognitive Benefits
- Brain Training
- Gift Occasions
- Christmas, Birthday, Holidays, Mother's Day, Father's Day, Thank You and Appreciation
- Personalization Available
- Yes
- Puzzle Type
- Assembly, Dissection, Logic
- Category
- Brain Teaser Puzzle
- Availability
- In Stock
Personalize It!
Did you know we can add a custom laser engraving to every puzzle and game? Well, we can. Add a personal touch to your gift with a name or message.
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| Características | ||||
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| Por | Creative Crafthouse | Creative Crafthouse | Creative Crafthouse | Creative Crafthouse |
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Precio normal$33.95
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A beautifully crafted wooden brain teaser praised as "more than a puzzle, it is a piece of art." Customers said it's challenging enough to stump most people for hours or even months. Quality craftsmanship, timely delivery, and professional engraving noted. Some felt it was overpriced and solved quickly. Perfect gift for puzzle enthusiasts.
This is just the perfect size. Not too small nor oversized. It is shrink wrapped so it is hard to tell the heft of each piece although the sum of all pieces seems substantial in weight and pieces do not appear hollow. Engraving was professionally designed and executed. Thank you very much. Hope the recipient enjoys the intrigue of solving it.
I had this sent to my brother in law for his birthday in April, sent me a text message saying he had finally solved it on July 4th. Perfect! I got him stumped for a while, I have made it a point to keep him on his toes for 50 years. Thanks for that! He loved it 😉
My item came in, and it looks beautiful and perfect for a Christmas gift!
Fantastic seller! Even with me adding last minute changes, everything arrived as expected.
Well made, very excited to give as a present!
My father-in-law loves it - exactly as described. A+
This is going to be great for my son-in-law. He loves puzzles
The puzzle master I got this for loves it. Stumped the whole family.
This is more than a puzzle. It is a piece if Art
My 18 YO nephew said he enjoyed the puzzle. Solved it, of course, but said it was fun and unique.
Beautiful. Great fun for my family
Exactly as described. My husband usually figures out puzzles I gift him within the day but this one took some extra time. Great gift and highly recommend for all puzzle lovers who want a challenge.
Item matched the description given
This will be a real hit at Christmas parties for years to come.
Fantastic! Item matched description and was delivered in plenty of time to give as a Christmas gift!
Beautiful puzzle, slightly delayed delivery but very helpful customer service team for any enquiries.
Great gift for my son. Hoping it’ll stump him for a while.
Looks great. Giving it to my uncle for Xmas. 🎄
Beautifully made and can travel easily
Looks exactly like the picture. And well crafted.
Came in on time, looks good and it a great gift idea for people to use their brain power
Très bel objet qui correspond à la description
Perfect gift for my SIL, who loves puzzles
Calibron 12 | The 1933 Edison Puzzle That Still Beats Most People
Calibron 12 Puzzle | Impossible Brain Teaser for Adults
This is a gift so it hasn’t been opened yet
Got this for my son that loves puzzles, can't wait to give this to him.
Absolutely perfect and is a gift for someone that loves hard puzzles and should keep them busy for hours, lol!
I'm excited to give this as a Christmas gift. I always like to find items that friends don't expect.
I can't wait to gift this. I'm strongly considering buying one for myself!
Beautiful! Just as described. Arrived quickly.
It’s wrapped in clear plastic and looks exactly as pictured. It’s a gift for Christmas!
