Pitcher's Tricopter 9SD (rare hand made SLS puzzle similar to Rubik's Cube 3x3x3 and Pyraminx)

Pitcher's Tricopter 9SD (rare hand made SLS puzzle similar to Rubik's Cube 3x3x3 and Pyraminx)


Only 1 available

Hooray! This item ships free.

Rare find — there's only 1 of these in stock.

Item details



3D Printer, Oracal

In cooperation with Pitcher Puzzles, I am proud to present David Pitcher’s Tricopter 9SD.

From the designer:
My puzzle is the Tricopter 9SD. If you've been following my naming convention for this series of puzzles, you'll know that this is an edge-turning triangular prism with nine axes (one at every edge). It has shallow cuts on the jumbling axes (that's the "S" in the name), and the cuts on the non-jumbling axes are deep (as in right through the origin) (that's the "D" in the name).
When I first was exploring this geometry I didn't think it would be workable due to the deep cuts. I was thinking that it would need something like a Fracture-6, or perhaps even a Constellation Six (an unbandaged Fracture-6) at the core. Fortunately the solution turned out to be much simpler than that. It really just needed a "cheese" mechanism at the core to make it all work.
One interesting aspect of this puzzle (at least to me) is that the axles are stacked on top of each other. In other words, the non-jumbling axles are screwed into the core, and the jumbling axles are screwed into those. So when a non-jumbling turn is made four of the jumbling axles go along for the ride. In reality, the jumbling axles are actually attached to the "cheese" pieces that float in between the non-jumbling axle pieces, but the end result is the same due to the cheese geometry. It just made for a cleaner core to do it that way instead of the other.
(In a weird little aside about this core design, several months ago I had actually been daydreaming about what might happen if a puzzle had axles stacked on top of each other. I set the idea aside , and then a few months later, the puzzle with this property materializes for me! Perhaps the universe was trying to tell me something...)
Despite the way these axles are stacked, and the fact that you can only have one 90 degree non-jumbling turn made at a time, the puzzle can still be thoroughly scrambled. As with all of these 9 axis puzzles, it's mind boggling to even try to wrap your head around solving (actual solving is beyond me at the moment). My one disappointment with this puzzle is that the exaggerated pillowing that was required is just a bit too much curvature for my stickers, as you can see in the photos. Overall though, it's a pretty cool puzzle that seems to defy logic (or at least my limited grasp of logic).

puzzle on the photo and video-presentation may differ slightly from this puzzle
museum link - http://twistypuzzles.com/cgi-bin/puzzle.cgi?pkey=30303
youtube review video from Author - https://www.youtube.com/watch?v=9OwipoxxAtA

my review video (turning demonstration) - https://www.youtube.com/watch?v=LfBIfbvbZoY

Edge size - , Height - , weight -


I can make and send you this puzzle after your order and payment within 30-60 days (term depends on the supplier of 3D printing).
Delivery to any country in the world with tracking number. Available Combined shipping - you can order several puzzles to get a small discount or Free Shipping.

You need to understand: this puzzle is hand-made.
The plastic is printed on 3D-Printer from SLS-nylon, completely polished and painted. Stickers are made of Oracal film.
This puzzle is different from the products in mass production from the store.
You can also play with it many times, but you must remember that this is a fragile product.
You get a fully assembled puzzle - this is an excellent specimen for the collection!

Shipping & policies

Made just for you. Ready to ship in 4–8 weeks.
From Russia
Free shipping to United States

Meet grigorusha

Evgeniy Grigoriev

Evgeniy Grigoriev

Cheboksary, Russia

This seller usually responds within a few hours.


5 out of 5 stars (98)