Level 1: SYMMETRY MEMORY*

OBJECT OF THE GAME: 

The goal is to collect pairs of cards that are members of the same symmetry group. 

Examples: a pair of C3 cards (left) with rotation symmetry of order 3 and no mirror symmetry or a pair of D3 cards (right) with rotation symmetry of order 3 and 3 mirror lines.

THE DEAL:

Any player shuffles the deck and spreads all the cards out, face down all over the table.*

THE GAMEPLAY:

The first player may be decided in any way. The first player turns up any two cards on the table, leaving the first card face up until they have turned the second. If the two cards form a pair, the player takes them and puts them face down in a pile. Then, they turn up two more cards. Whenever the two upturned cards do not form a pair, the player turns both cards face down again, leaving them in exactly the same position on the table. It is then the next player’s turn (the player to the left). Play proceeds in the same manner until all the cards have been matched.