Poker is a card game in which players bet chips based on the strength of their hand. It is played in casinos, private homes, card clubs, and over the Internet. It is a social activity that requires an ability to read opponents and the skills to make bluffs. The object of the game is to win the pot, which is the sum of all bets made during a single deal. A player may win the pot by having a superior hand or by bluffing when other players call his bets.

While the outcome of any particular poker hand is influenced by chance, most long-run expectations are determined by decisions that players make on the basis of probability, psychology, and game theory. Even the world’s best players sometimes suffer bad beats, but a player can minimize the impact of variance by practicing bankroll management and improving his or her mental game.

In addition to the initial forced bets, money can be placed into the pot voluntarily by players who believe that their bet has positive expected value or who are trying to bluff other players for various strategic reasons. A player may also win the pot by having a superior hand that forces other players to fold.

When a player has a strong enough hand to justify making a bet, he or she should raise the bet in order to take advantage of later betting streets. However, a player should be careful not to overplay their hand early on, as calling re-raises with weak hands can be very costly.