Omaha Hi/Lo is structurally similar to Texas Holdem. The rules are identical with the following three exceptions:
You are dealt four private cards in Omaha Hi Lo, compared to two in Texas Holdem.
You must use two cards from your hand in combination with three from the communal board cards to form a five-card poker hand.
Omaha Hi Lo is a split-pot game, with the best high hand winning half the pot and the best qualifying low hand winning the other half. Low hands must contain five unpaired cards with a rank of eight or lower to qualify. Two of them must come from the player’s private cards and three from the community cards.
One player can win both the high and low halves of the pot. This is called scooping. You may use any two-card combination, or combinations, to form high and low hands. Straights and flushes are ignored for low, and an ace can be used as either the highest or the lowest card in the deck or both.
As in Omaha, Omaha Hi Lo players should exercise caution in evaluating their hand as they make the transition from holdem. Every Omaha Hi Lo hand must comprise two cards from your hand and five community cards in the centre of the table.