Poker is a card game where players place bets and reveal their hands at the end of a round. The object is to win the pot by having the best hand. This can be done with a good, strong hand or by bluffing, which requires the ability to read opponents and predict odds. In the case of a bluff, it is possible to win the pot even if one has the worst hand.

In addition to the skills mentioned above, poker also involves a lot of psychology and game theory. It is important to keep a level head and not let emotions affect your play. This is especially true when bluffing, since there are many ways to make your opponent believe that you have the best hand when you don’t.

Most forms of poker require players to place a mandatory bet at the beginning of each hand called an ante or blind. This is often followed by a second compulsory bet referred to as the big blind, usually twice the size of the ante. There are many variations of the game, but all involve betting and placing bets on cards.

Almost all poker games use a supply of poker chips. These are usually color-coded: a white chip is worth a single unit, or the minimum antes or bets; a red chip is worth five white chips; and a blue chip is worth ten whites. The player with the highest-valued chips wins the pot.