Poker is a card game played by two or more people around a table, each holding a stack of chips. Players place bets into a pot, called the “pot,” until one player has all the chips and everyone else folds. A good poker player will mix up his style and betting to keep his opponents guessing about what he has in his hand.

The game requires a high level of concentration and decision-making, which is a great way to develop these skills. Poker can also help people build resilience to failure and learn how to deal with setbacks. This is an important trait both in poker and in life, as it can help people make it through a difficult patch, such as losing a job interview, ahead of someone with a better CV.

A good poker player will also know how to read his opponent, including his tells. These are unconscious habits and expressions a person displays during a poker hand that give away information about his strength, such as a change in posture or facial expression. This knowledge is crucial because it can help a player win more hands and avoid costly mistakes. A poker player can also use his knowledge of probability to improve his chances of winning a hand. This can be done by working out the range of possible cards that his opponent could have, and comparing it to his own hand to see how strong it is.