Omaha is dealt and bet like Texas Hold'em, but each player gets four hole
cards. At showdown you must use exactly two of your own cards and exactly
three from the board.
The sections below cover four-, five-, and six-card Omaha and double-board
games. Omaha Hi-Lo is in Omaha Hi-Lo and Big O and Courchevel in Courchevel. Other shared rules follow
Texas Hold'em (Texas Hold'em).
Omaha uses a standard 52-card deck and seats two to ten players. A full table
of ten takes 40 hole cards; with five board cards and three burns that is 48,
leaving four in the deck.
30.2 Four cards face down, then flop, turn and river
Each player is dealt four cards face down. The board then comes as in
Hold'em: a burn and three cards for the flop, a burn and one card for the
turn, a burn and one card for the river, with a betting round after each
stage (20.3).
30.3 Blinds and the order of betting are Hold'em's
Omaha is usually played with two blinds and no ante. The player left of the
big blind acts first before the flop, the big blind keeps its option to
raise, and on later streets the first player still in left of the button acts
first. Heads-up, the button posts the small blind (20.4 to 20.7). Robert's
Rules says every Hold'em rule applies to Omaha except playing the board.
Omaha is most often played pot-limit, which is why it is so often called PLO
(pot-limit Omaha): you may bet or raise up to the size of the pot. In a pot
with 100-200 blinds, the first player to act can raise to 700: the 200 to
call, plus the 500 that would then be in the pot. The TDA uses that very
Omaha example for its pot-limit rule. How to work out a pot-sized bet in
every case is Betting structures. Omaha can also be played fixed-limit.
30.5 Exactly two cards from your hand and exactly three from the board
Your hand is always five cards: exactly two of your four hole cards and
exactly three of the five board cards. Not one from your hand and four from
the board, not three and two. You choose which two and which three, so with
four hole cards there are six pairs to try against the ten possible sets of
three from the board. The two cards you don't use play no part.
30.6 Four of a suit on the board needs two of the suit in your hand
A board with four hearts doesn't give you a flush if you hold one heart. You
can use only three board cards, so you need two hearts of your own. Example:
the board is the king, nine, seven and four of hearts and the jack of clubs.
A player holding the ace of hearts with three black cards has no flush. A
player holding the six and two of hearts has a king-high flush: the king,
nine and seven from the board with their six and two.
30.7 Four to a straight on the board needs two connecting cards in your hand
The same goes for straights. If the board is 5-6-7-8-K, one 9 or one 4 in
your hand does nothing, because you can't use four board cards. You need two
hole cards that fit with three board cards: 9-10 makes 6-7-8-9-10, and 4-3
makes 3-4-5-6-7.
30.8 Paired and trips boards: what you can and can't make
The three-from-the-board rule also limits what a paired board gives you:
(a) Three of a rank on the board, say 9-9-9-K-2: one more nine in your hand
makes four of a kind (the board's three nines plus your nine and any other
hole card). A pocket pair makes a full house, nines full.
(b) Four of a rank on the board, say 9-9-9-9-K: nobody has four of a kind,
because only three of the nines can play. The best you can hold is a full
house with a pocket pair, and the higher pair wins.
(c) A pair on the board, say K-K-7-4-2: one king in your hand makes three
kings, played with your other hole card and one more board card. Holding
A-K, your hand is K-K-K-A-7.
In Hold'em five board cards can be your whole hand (20.11). In Omaha that is
impossible: every hand contains two of your own cards. So a board of
A-K-Q-J-10 does not give everyone a straight; only a player holding two cards
that make a straight or better with three of those board cards has one.
To win any part of the pot you table all four hole cards, not just the two
you are using. The TDA's definition of tabling a hand names all four
cards for Omaha, and Robert's Rules asks for the whole four-card hand. Show order,
ties and splitting the pot are Showdown and Pots.
30.11 "I've got the flush": one-card hands at showdown
The classic Omaha dispute is a player who turns over one heart on a
four-heart board, or one card to a four-card straight, and claims the pot.
The cards speak: the hand is read as exactly two plus three, whatever its
player says, and the claim doesn't bind anyone (Showdown). The reverse mistake is
as common: a player mucks a winning hand, such as a low full house, because
they read it the Hold'em way. Table all four cards and let them be read.
30.12 Five-card Omaha: five hole cards, still exactly two
Five-card Omaha deals five hole cards instead of four. Everything else is the
same, including the exactly-two-and-three rule: you now pick your two from
ten possible pairs. The extra card strains the deck. Nine players take 45
hole cards, which with five board cards leaves just two, not enough for three
burns, so rooms that burn seat fewer. PokerStars, which added five-card
Omaha online in 2013, spread it pot-limit on six-player tables.
Six-card Omaha deals six hole cards, and the hand is still exactly two of
them with three from the board. pagat.com gives it no rules beyond that, and
rooms decide the rest themselves, table size above all: six cards each for
seven players plus five board cards and three burns is 50 cards, so seven is
about the most a 52-card deck can deal. pagat.com's note on Binglao, a mix
that includes six-card hands, makes the same point about seven players.
30.14 Double-board Omaha: two boards, one set of hole cards
In double-board Omaha the dealer puts out two separate boards, each with its
own flop, turn and river, and there is one betting round per street covering
both. You make a hand on each board separately from the same hole cards,
exactly two of yours with three of that board's cards each time. A card on
one board never combines with a card on the other. The usual form is
pot-limit, four cards, sometimes five.
At showdown the pot is divided in two: half goes to the best hand on the
first board and half to the best hand on the second. A player who wins both
boards takes it all, called a scoop. A tie on one board
splits that board's half. Side pots are each divided the same way (Pots). The
rule for an odd chip between the boards is a house matter; give it to the
first board dealt unless your house rules say otherwise.
A bomb pot is a home-game and card-room custom in
which everyone antes, there is no pre-flop betting, and the hand starts on
the flop. It is very often dealt as pot-limit Omaha, frequently with two
boards. Card Player's example: eight players ante $10 each, so the pot is $80
and the first bet on the flop can be up to $80. Bomb pots in general are Home-game customs.