Poker is a card game in which players place bets on their hands. It is a fast-paced game and bets are made continuously around the table until one player has all of the chips. The object is to win the pot by either having a high-ranking hand or by making a bet that no other player calls. The game is a mix of chance, psychology, and game theory.
In the most common form of poker, each player has five cards. Each player can make bets based on their own assessment of the strength of their own hand, the strength of the hands held by other players, and the likelihood that they will receive a specific card to improve their hand. A player can also bluff by betting with a weak hand, hoping to induce other players with stronger hands to call his or her bet.
If a player does not wish to make a bet, they may pass their turn by “checking.” A player who checks is allowed to raise a bet later on, called raising under the gun, provided that he or she did not open earlier in that betting interval.
Poker can be played between two and 14 players, though most games are played by four to eight players. It is popular in casinos, home games, and poker clubs. The game has been called the national card of the United States, and its play and jargon are prevalent in American culture.