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Estimates of the house edge for blackjack games quoted by casinos and gaming regulators are based on the assumption that the players follow basic strategy. The popular British member of the vingt-un family is called “pontoon”, the name being probably a corruption of vingt-et-un. Video and online blackjack games generally deal each round from a fresh shoe (i.e., use an RNG for each deal), rendering card counting ineffective in most situations. Video blackjack game rules are generally more favorable to the house; e.g., paying out only even money for winning blackjacks. In games with more decks, casinos limit penetration by ending the shoe and reshuffling when one or more decks remain undealt. Most blackjack games have a house edge of between 0.5% and 1%, placing blackjack among the cheapest casino table games for the player. Each blackjack game has a basic strategy, the optimal method of playing any hand. Casinos generally compensate by tightening other rules in games with fewer decks, to preserve the house edge or discourage play altogether.
In handheld games, a player must reveal their cards if they have a blackjack, bust, or wish to double down, split, or surrender. Dealers deal the cards from one or two handheld decks, from a dealer’s shoe or from a shuffling machine. In European casinos, “no hole card” games are prevalent; the dealer’s second card is not drawn until all the players have played their hands.citation needed A player can usually bet in one or multiple boxes at a single table, but in many U.S. casinos, players are limited to playing one to three positions at a table. The house edge for side bets is generally higher than for the blackjack game itself. Shuffle tracking requires excellent eyesight and powers of visual estimation but is harder to detect; shuffle trackers’ actions are largely unrelated to the composition of the cards in the shoe. Casinos also sometimes use a shuffling machine to reintroduce the cards whenever a deck has been sloto sport casino played.