Concentration (game) as an educational game. Any deck of playing cards may be used, although there are also commercial sets of cards with images. The rules given here are for a standard deck of 52 cards, which are normally laid face down in four rows of 13 cards each. The two jokers may be included for a total of six rows of nine cards each. Additional packs can be used for added interest. Standard rules need not be followed: the cards can be spread out anywhere, such as all around a room. In turn, each player chooses two cards and turns them
Spanish playing cards which has a large diaspora population. The Argentine version contains 50 cards and "la pinta". Originally known as the Roxas pattern, the Sardinian pattern was designed by José Martinez de Castro in Madrid for Clemente Roxas in 1810. It became popular in Sardinia where it has been adopted as the local standard. The most notable feature are the scenes found in the fours of each suit. The coins also feature faces like the Castilian pattern. The 3 of Clubs does not have intersecting pips. This is the only Spanish-suited pack in Italy to have numeric indices. The 64-card Tarocco Siciliano