A player begins a round by placing 2 mandatory bets in the pot, called blinds, and then is dealt 2 cards. The first player to act can raise his or her bet by saying “I open.” A player who matches the last bet is said to call. If a player checks, the other players can choose to discard and draw 1 or more replacement cards from the deck (depending on the rules of the game).
When all players have revealed their hands, the highest hand wins the pot. The highest possible hand is a royal flush, consisting of four matching cards in the same suit. The second highest is a straight, which has 5 consecutive cards of the same rank in a single suit. The lowest hand is a pair, which consists of two matching cards.
It is unclear how the game of Poker originated, but it is thought that it may be a combination of several earlier games. It is also believed that the word “poker” came from a slang term used by thieves to describe cheating unsuspecting victims.