Poker is a card game with a great deal of chance and strategy. It has a long history, with varying accounts of its origins. It is believed to have been derived from the 17th-century French game poque and the German game pochen, both of which were games of chance and bluffing.
A hand of poker comprises five cards. The rank of a poker hand is determined by its relative probability, with a pair of matching cards beating any single card and four of a kind beating any straight. In some variations of the game there may be wild cards, bringing additional complexities to the ranking of hands.
Prior to the dealing of a hand, one or more players are required to place bets into the pot, often called the ante or blind bet. After the ante is placed, the dealer shuffles the deck and then deals each player one card at a time, beginning with the person to their left. The cards can be dealt face up or face down, depending on the variant of poker being played.
After the first round of betting, a player can choose to raise or fold his hand. When he raises, other players must either call his bet or concede that they have a superior hand. A player may also bluff, placing a bet that suggests that his hand is stronger than it is for strategic reasons.
Bluffing requires a strong understanding of basic probability, psychology, and game theory. It is also important to have good emotional control, as it can be very frustrating to lose a big hand.