Two intersecting rings of marbles but with four junctions at which the pieces can change between the rings.

• Inventor: Vadim Antonenko
• Mechanism: Intersecting rings
• Patents: Unknown
• Producer: USSR
• Year: 1985
• Original Price: $3.33 USD
• Current Price: No Data

This puzzle's original name is "Космические орбиты", transliterated "Kosmicheski Orbity" meaning "Cosmic orbits".
This is a puzzle of two intersecting rings of marbles. Unlike the wellknown hungarian rings these rings join at four places instead of two, making the puzzle more difficult. This is the earliest known puzzle of this type although it was only (re)discovered after it was reimplemented two times: "Digit Rotations" and "Moeraki Games Nr. 3" both utilize the same mechanism but with different sizes and numbers of marbles.
The style of the puzzle, especially its uniquely shapes pieces resemble Brianskie Koltsa, a variant of the Hungarian Rings. This is no wonder as both puzzle also share the same logo and according to soviet custom were therefore produced in the same factory.

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 stamped on the leaflet.

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