The game contains 7 variations. Do you need to recognize and tell the relationships between discs and property cards if a statement is true? The discs are divided into sectors, moving clockwise from the shellfish - becoming pearls, pearl - pearls, and then from the pearl shell again. So a picture defines a disc. Each disk has 5 properties and each property has 5 discs that have these properties.

It was based on the work of Professor Zoltán Dienes.