Poker is a card game for two to 14 players, with the object of winning the pot by having the best poker hand at the end of each betting round. The game is played with cards and chips, with each player putting down a set amount of money to start the round, known as the buy-in. Almost all forms of poker have rules that are based on probability, psychology and game theory.

In most games, a standard 52-card pack is used. In many high-level games, two packs of contrasting colors are used in order to speed up the deal. During the dealing of each pack, one pack is dealt and the other is shuffled and prepared for the next dealer. After each betting interval (or round), all players show their hands and the winner is determined.

If a player has a good hand, they will usually bet in order to build the pot and extract value from weaker hands. Alternatively, they may choose to raise the bet amount in order to bluff, or simply to increase their chances of winning. In either case, they should always make sure that their bet is reasonable and not too high.

A player who does not have a good hand will usually ‘drop’ (fold), meaning that they will put no chips into the pot and will not participate in future betting rounds. Any chips that are part of the pot at the time a player drops are returned to the player to their left.