A puzzle made in the former Soviet Union. Even in that region a very rare item.

• Inventor: Dmitriev, Jurin, Stulnikov
• Mechanism: Square-1 (3 layers)
• Patents: Unknown
• Producer: USSR
• Year: 1988
• Original Price: $6.70 USD
• Current Price: No Data

The puzzle was produced in the former Soviet Union in the 1980's. The original name is ??????, transliterated Olidius or OLIDJuS. OLIDJuS is an artifically constructed name: OLI is the short name for logical toy and D, Ju and S are the first letters of the inventors Dimitriew, Jurin and Stulnikow.
The puzzle is related to the Square-1 (or better: the Dodecagonal prism which does not behave bandaged and is usually made from a Square-1): There are two central pieces which allow a 180�-move and 18 segments in each of the two layers parallel to the central pair of pieces. These 18 segments make it into an octadecagonal prism.
The original price is based on the official exchange rate (0.6 roubles per dollar) although in socialist time this was completely theoretical. The price (in roubles) is printed on the package.

It shall be mentioned that the number of these puzzle increased by one in 2004 when Anthony Greenhill made a perfect copy of it and "perfect" is no exaggeration given the level of detail Anthonys sample copied the original. He used a modern Square-1 for the mechanism.
Image 5 prooves that the puzzle is composed of 18 segments.
Most known samples have a grey core but image 10 prooves that some with black core were produced.
The year given here is an upper bound. This puzzle was shown in "The book of ingenious and diabolical puzzles" from 1994.

Images 12-13 proove that there have been different body colours.

Diameter: 60 mm
Height: 60 mm
Weight: 90 grams

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