Omaha Hold'em

Omaha Hold'em is a fixed-limit poker game for two to six players. It uses a standard 52-card deck and play chips only. The showdown rule is the whole game: your best hand is made from exactly two of your four hole cards and exactly three of the five community cards. You may not play the board, and you may not use one, three, or four hole cards.

Four spades in your hand and one spade on the board is not a flush. One heart in your hand and four hearts on the board is not a flush either. A straight lying on the board does not count unless two of your hole cards complete a straight with three of those board cards.

Win every chip on the table. A hand is won by folding everyone else out, or by showing down the best legal five-card hand. The match ends when one player holds all the chips.

Each player starts with 500 chips. The dealer button begins on seat 1 and moves clockwise, after each hand, to the next player who still has chips.

The small blind (5) is posted by the player left of the button. The big blind (10) is posted by the next player. Heads-up, once only two players have chips, the button posts the small blind and the other player posts the big blind. That starts with the first hand after the field drops to two. A short stack posts every chip it has left and is all-in.

Each player receives four hole cards, dealt one at a time, starting with the player left of the button. Hole cards are private. Folded hands are never shown.

The flop is three community cards, the turn is a fourth, and the river is a fifth. One card is burned before each of those streets. If fewer than two players can still bet, the remaining streets are still dealt, with their burns, and no further betting is offered.

Play is fixed-limit. The pre-flop and the flop bet 10. The turn and the river bet 20. A round allows at most four bets or raises. The big blind itself does not count, so four raises may follow it. On the flop, turn, and river the cap is the opening bet plus three raises.

A short all-in, for less than a full bet or a full raise, does not reopen betting and does not count toward the cap. A player who has already acted this round may then only call it or fold. A player who has not acted yet may still raise. Chips no one is required to match come back to the bettor. A player with no chips left stays in the hand and simply takes no further action.

Pre-flop, the first to act is the player left of the big blind. Heads-up, that is the button. On the flop, turn, and river, the first to act is the player left of the button. Heads-up, that is the big blind.

Hand rankings are the usual poker rankings. An ace is high, except in the wheel A-2-3-4-5, which is a five-high straight. Suits never break a tie.

Each player still in the hand looks at all 60 ways to choose two hole cards and three board cards, and plays the best one. Two equally good combinations are the same hand; the table highlights one of them.

A board of K-K-K-4-2 and a pair of sevens in the hole, with no king, is a full house, kings over sevens. Four aces in the hole, against a board with no pair, score as one pair of aces unless three board cards make a better legal hand together with two of those aces.

Every hand still in at showdown is turned up and named, for example "Full house, kings over sevens", with the three board cards it used listed under it. The two hole cards that were used are outlined and the other two are dimmed. The community cards are outlined for your own hand. If you folded or are watching, they are outlined for the hand that won the main pot.

If everyone else folds, the last player takes the pot and does not show cards.

An exact tie splits the pot evenly. A leftover chip goes to the lowest-numbered tied seat.

Side pots work as in Texas Hold'em. An all-in player can win only the chips they were eligible for, including chips put in by someone who folds later.

Each pot is announced as it is paid, the main pot first and then each side pot, with the hand that won it. Every winning seat shows how many chips it won. Chips no one matched go back to the bettor and do not count as a win.

A player with no chips after a hand is eliminated. The button and the blinds skip that seat. The match ends when one player has every chip.