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Creative Crafthouse

Circle Pack 13

Circle Pack 13

Regular price $35.00 USD
Regular price Sale price $35.00 USD
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You are provided with 13 circles numbered sequentially. Given that circle #1 has an area of "X", then circle #2 has area 2X; circle #3 has area 3X; circle 4 has area 4X, and so forth up to 13X. You goal is to fit them, or as many as you can, into the large square opening. To fit all 13 is very difficult. How many can you fit? Give yourself a point total equal to the sum of the numbers on the circle for each circle you fit inside the square. Maximum possible is 91 points if you get them all inside. Analysis by Professor Eckard Specht, Germany has shown that the minimum square that these circles will fit into (with no overlap) has a side length equal to 18.590 times the radius of the smallest circle. That is the situation presented in this puzzle. The density of the area filled is 82.7% if all 13 are inserted. Circle packing is an interesting branch of mathematics. A circle packing is an arrangement of circles inside a given boundary such that no two overlap and some (or all) of them are mutually tangent. The math and geometry needed to make this particular challenging puzzle was obtained from by Prof. Eckard Specht of Germany. There is extensive information on Circle Packing which you can find via an internet search on the subject. The puzzle comes with base and cover and was made in Hudson, FL, USA using both laser and conventional woodworking techniques. It measures approx. 9" x 7.5". Wood pieces are 1/4" thick. Made in USA by Creative Crafthouse Level of Difficulty: Level 5
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Where are your products made?

Our puzzles and games are handcrafted with care. Most are made in the USA by the Janelle family; some are crafted by friends in Canada, Japan and Mexico and some right here in Albuquerque. Be sure to ask for recommendations.

What's the story behind Puzzled?

Puzzled® was born from a passion for play and the joy of bringing people together through the art of puzzling. Founded by Dan Janelle and Melanie Kintigh in Old Town Albuquerque, our store is a celebration of creativity, curiosity, and community. Drawing from a rich history of craftsmanship and a love for brain teasers, we offer an eclectic mix of handcrafted puzzles and games designed to challenge and delight minds of all ages. At Puzzled®, every piece tells a story, and every visit is an adventure waiting to unfold.

What is your shipping and returns policy?

We offer free shipping on US orders over $200, typically dispatching within 2 business days, often sooner. For items not immediately available, we'll reach out to discuss your options. Our shipments within the U.S. are primarily through USPS Priority Mail, with UPS for larger packages, aiming for a 2-4 day delivery.

For international shipping inquiries, please contact us directly. We strive for transparency in shipping costs, keeping them close to actual with a minimal handling fee.

Your satisfaction is paramount. If you’re not happy with your purchase, items in their original condition can be returned within 14 days for a refund or exchange. Contact us for return authorization and instructions.