Texas Poker

Texas Hold’em is by far the most popular version of poker played online.

The game is usually played between up to 10 players, each of whom are dealt two “hole cards” face down. The player must then combine these cards with the five “community cards” dealt face up on the table to form a five-card poker hand.
The dealer is marked by a circular “Button” that is moved one place in a clockwise direction at the end of every round.

The hand begins when the two players to the left of the dealer post an obligatory stake called the “Small Blind” and the “Big Blind”. The Big Blind is usually twice the Small Blind.
When these stakes have been laid two cards are dealt face down to each player. These are private cards and must not be shown to anyone prior to the showdown.
The first round of betting is begun by the player on the right of the big blind (called “under the gun - utg"). This player can either call (with a stake the same as the big blind), raise (stake depends on the betting structure adopted in the game) or fold (leave the game for this round).

The following player can then either call (with a stake the same as the big blind or the raised stake), raise (if the pot has not already been raised) , raise again (to raise the pot further) or fold.
The same options are available to all players until everyone has made their play.

After the first round of betting, three community cards are dealt face-up on the table. These three cards are called the "Flop."
A new round of betting is then started by the first player on the left of the button who is still in the game (has not folded).

After this round of betting, a fourth community card is dealt face-up on the table. This card is called the "Turn" and it is followed by another round of betting.
Last of all, a fifth community card called the “River” is dealt face-up on the table and the last round of betting takes place.

If two or more players are left in the game (haven’t folded) the steward calls a "showdown". The player who makes the best 5-card hand (from their two hole cards and the five community cards) wins the pot.