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Rubik's Cheese - Rubik's Sajt Logikai Jatek

Above: Solved

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A very rare collectors item from the eighties. One of the puzzles invented by Ernő Rubik himself.

Inventor : Ernő Rubik
Mechanism : Prism (1 layer)
Patents : GB2087245, YU263781, SE8106494, PT73941, NO813698, NL8104968, JP57131470, IT1142051, IE812621, IE520
Producer : Unknown
Year : 1989
Original Price : Unknown USD
Average Price : $182.00 USD

Rubiks Cheese is a true collectors item which was invented by Ernő Rubiks himself, patented in 1980 (application date in Hungary) and produced in a low quantity in the eighties with hungarian texts only. Its original name is "Rubik's Sajt Logikai Jatek".
Piece type signature: PIII1m[T3][]
Diameter: 65 mm
Height: 32 mm

The packages back side translates to:
"Goal: With rotations you need to solve it's original states or one of the above states. It develops spacial visions, logical skills and colour recognition. It can be used from 3 years old, but it makes adults thinking as as well."

This puzzle can be viewed as a predecessor to Rubiks Ufo. Compared with this later puzzle the Cheese is made of only one layer, although every piece consists of two coloured halves. There are no more than 96 possible permutations for this puzzle. The mechanism uses a three-armed spider as core. The Skewb uses something similar but in 3D.

As if the producers wanted to increse the puzzle's future value even more they produced it in several differently coloured versions: There is a version with purple halves and one with white halves. Some versions consist of three pairs of identically coloured pieces while other have six all-different pieces.

The year given here is an upper bound, as some sources list it as a puzzle of the 1980s. The correct year is so far unknown.
It was never discussed in Singmaster Cube Circular (1981-1985)
but an article in MrPopHistory from 1983 announces (!) the puzzle for the next year. This puzzle is a very mysterious one!

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

	Sale Date	Price (USD)	Sale Type	Condition	Package Condition	Notes	Contributors
	2022-02-19	224.00	eBay Auction	Average	Missing	Variant with light lavender pieces; mechanism a bit loose; one blue segment discolored	PuzzleAF
	2021-09-19	139.99	eBay Auction	Average	Missing	Variant w/o white pieces; slightly discolored plastic; inner machanism a bit loose	PuzzleAF
USD = The sum of all currently check-marked rows.
USD = The average of all currently check-marked rows.