If they do not match, you turn them face down, without changing their position in the layout, and it is the next player's turn.
If they match, you take these two cards, store them in front of you, and take another turn. At your turn you turn face up two cards of your choice from the layout. The cards should not overlap, and can be arranged in a regular pattern or spread irregularly as desired.
The cards are thoroughly mixed and spread face down on the playing surface - table or floor. A standard Anglo-American 52-card pack can be used, or any other kind of cards, provided that the backs are indistinguishable and the faces can be matched up in pairs or quartets.
In Britain it is called Pelmanism after Christopher Louis Pelman, who founded the 'Pelman Institute for the Scientific Development of Mind, Memory and Personality' in London in 1899. This simple and popular memory game is also known as Concentration or Memory.
