DoppelkreisA derivate of the hungarian rings with less marbles in only two colours. It resembles the original patent from 1893!
Kosmicheski OrbityTwo intersecting rings of marbles but with four junctions at which the pieces can change between the rings.
Volshebnye K?ltsaA variant of the hungarian rings, produced in Yerevan Factory Theatre-souvenir products during the soviet era.
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