A rummy game played in Spain, Uruguay and Argentina with the 40-card Spanish deck: make sets and runs, close when your hand is ready, and hope for a chinchón, seven in a row, which wins on the spot.
Chinchón is played here by four players, each for themselves, with a Spanish pack of 40 cards: coins, cups, swords and batons, numbered 1 to 7 and 10 to 12. Everyone gets seven cards. The rest form the stock, and its top card is turned up to start the discard pile. Play goes anticlockwise.
On your turn, draw the top card of the stock or of the discard pile, then discard one card face up. You can't throw back the card you just took from the discards. Try to arrange your cards into melds: sets of three or four cards of the same rank, or runs of three or more cards of one suit in order. In a run the 7 is followed by the 10, because there are no 8s or 9s.
Chinchón is played in many slightly different ways, and pagat.com, our usual source, doesn't describe it. These are our chosen rules, following English Wikipedia's description, with the closing rule (all melded, or one card of 1 to 3 left over) that most Chinchón rule sites use. Laying off on the closer's melds and the anticlockwise play (Wikipedia's summary box says clockwise) are also our choices. Common variations not offered here include wild cards (the 1 of coins, or two jokers), the 48-card pack with 8s and 9s, and Uruguay's Conga, where players over 100 can re-enter.
Chinchón is a matching card game played in Spain, Uruguay, Argentina, Cape Verde and elsewhere. According to Wikipedia, it is a close variant of gin rummy, sharing its aim of making sets and runs. In Basque and Cape Verdean Creole it's spelled Txintxon, and in Uruguay it's called Conga, or La Conga. It's played with the Spanish-suited pack of coins, cups, swords and batons, the same pack used for Truco and Brisca.
Chinchón is a free browser version of the Spanish rummy game, played against three computer players, with a daily game and online leaderboards. There's nothing to download and no sign-up.