Poker is a card game for two or more players. Each player is dealt a hand of five cards, and the player with the best hand wins the pot.
The game is played with chips that represent money; each player contributes an amount of chips to the pot according to the rules of the particular poker variant being played. The player to the left of the first player to make a bet in any betting interval must “call” that bet, placing into the pot the same number of chips; or “raise,” which means that the player puts into the pot more than enough chips to call, raising the total amount of chips in the pot.
There are countless variants of poker. Each has its own set of rules, but they all share several essential features:
Each player is dealt a hand of 5 cards. The value of the hand is inversely related to its mathematical frequency; that is, the more unusual the combination of cards, the higher the hand ranks.
In some forms of poker, the player is allowed to discard one or more cards from his hand and receive replacements from the undealt portion of the pack. This is known as “draw poker.”
Players must be able to read their opponents’ hands and decide whether to call or raise the current bet. They also have to be able to estimate their own stack depth, pot odds and other factors. The ability to quickly and quietly calculate these factors is important for poker players to be successful.