Blind (poker)

The "small blind" is placed by the player to the left of the dealer button and the "big blind" is then posted by the next player to the left.[1] The one exception is when there are only two players (a "heads-up" game), when the player on the button is the small blind, and the other player is the big blind. (Both the player and the bet may be referred to as big or small blind.)

After the cards are dealt, the player to the left of the big blind is the first to act during the first betting round. If any players call the big blind, the big blind is then given an extra opportunity to raise. This is known as a live blind. If the live blind checks, the betting round then ends. After the flop, turn and river, the first person to act is the player seated in the small blind position.

Generally, the "big blind" is equal to the minimum bet. The "small blind" is normally half the big blind. In cases where posting exactly half the big blind is impractical due to the big blind being some odd-valued denomination, the small blind is rounded (usually down) to the nearest practical value. For example, if the big blind in a live table game is $3, then the small blind will usually be $1 or $2 since most casinos do not distribute large quantities of $0.50 poker chips.

The blinds exist because Omaha and Texas hold 'em are frequently played without antes, allowing a player to fold his hand without placing a bet. The blind bets introduce a regular cost to take part in the game, thus inducing a player to enter pots in an attempt to compensate for that expense.

It is possible to play without blinds. The minimum bet is then the lowest denomination chip in play, and tossing only one chip is considered as a call. Anything higher than that is considered a raise. Poker without blinds is usually played with everyone posting an ante to receive cards.

In cash games, otherwise known as ring games, blinds primarily serve to ensure all players are subject to some minimum, ongoing cost for participating in the game. This encourages players to play hands they otherwise might not, thereby increasing the average size of the pots and, by extension, increasing the amount of rake earned by the cardroom hosting the game.

In cash games, the amount of the blinds are normally fixed for each particular table and will not change for the duration of the game. However, many cardrooms will allow blind levels to change in cases where all players unanimously agree to a change. Larger cardrooms will often include tables with different blind levels to give players the option of playing at whatever stakes they are most comfortable with. In online poker, blinds range from as little as one U.S. cent to USD1,000 or more.

The minimum and maximum buy-in at a table is usually set in relation to the big blind. At live games, the minimum buy-in is usually between 50 and 80 big blinds, while the maximum buy-in is usually between 100 and 250 big blinds. Some online cardrooms offer "short stack" tables where the maximum buy-in is 50 big blinds or less and/or "deep stack" tables where the minimum buy-in is 100 big blinds or more.

In poker tournament play, blinds serve a dual purpose. In addition to the purpose explained above, blinds are also used to control how long the tournament will last. Before the tournament begins, the players will agree to a blinds structure, usually set by the tournament organizer. This structure defines how long each round is and how much the blinds increase per round. Typically, they are increased at a smooth rate of between 25% and 50% per round over the previous round. As the blinds increase, players need to increase their chip counts (or "stacks") to stay in the game. The blinds will eventually consume all of a player's stack if he or she does not play to win more.

Unlike many cash games, it is not possible for a player to "miss" blinds in a tournament. If a player is absent from the table, he will continue to have his or her cards dealt and mucked and will have blinds and, if applicable, antes taken from his stack as they are due, either until he or she returns or until his or her stack is completely consumed by blinds and antes. A player who loses his or her chips in this manner is said to have been "blinded off."

• Betting in poker#Blinds