FREE SHIPPING with coupon FREESHIP22! Valid for orders $99+ that ship to Canada and the USA.

Download a FREE Solution for your puzzles!

Conjoined Somas
Click Image to Enlarge

Conjoined Somas

Stock Alert!

Enter your email address and we'll notify you when this product is back in stock. This service is free, and your email address will not be shared with anyone else or used for any purpose other than a one time in stock notification.

ObjectFit all the pieces into the frame.
DifficultyLevel 9 - Gruelling
BrandOskar Puzzles
Types3D Printed Puzzles, Oskar van Deventer
Dimensions7.3 cm x 7.3 cm x 7.3 cm / 2.9 in x 2.9 in x 2.9 in
PackagingPlastic Bag

Read Reviews Read reviews, and write your own!

Product Info

Conjoined Somas is two sets of Soma Cube pieces, made from truncated octahedra. The red set forms one cube, and the green set another. The two sets fit through each other.

Whereas each set is simple to solve (240 solutions for a regular Soma Cube), the combination is much harder, as most fitting combinations cannot be disassembled. Rick Eason computed that there exists 11,105,280 assemblies, than that from those at most 2,457,278 can be assembled (i.e. about 1 in 4.5 puzzles.) Rick only checked at the piecewise level, whether each individual green piece from an assembly could be separated from each individual red one. So most likely there are even fewer assemblies that can be actually disassembled.

The set of pieces took 18½ hours to 3D print on a Dutchy 3D printer, plus lots of glue to connect all pieces ruggedly with metal pins. 60 meter of 1.75-mm PLA filament was used to print it. The puzzle weights 216 gram: 178 gram of PLA plastic and 38 gram of metal pins.


Customer Reviews

Review Icon Write your own review!

This item has yet to be rated

* We can show you estimates of our prices in your local currency, however please note these are estimates only. We will charge your purchases in Canadian Dollars, and your credit card company or PayPal will automatically convert the Canadian Dollar amount into your local currency using their own rates, which may vary slightly from the rates we show.