It is a subset of Holdem where each player is dealt four cards instead of two cards. The total

cards in a Omaha hand comes to nine card when you add the five cards from the flop.

Those two extra cards in play change the game substantially from Holdem. A pair is a very

weak hand, a set or three of a kind was a little better, straights and flushes are very common

in Omaha and full houses are somewhat less common in Holdem than in Omaha. As stated

earlier, the extra two card makes a big difference in the final hand a player may have after the

flop is complete. Holdem players have to learn the hard way when converting to Omaha, due

to their tendency to think Holdem and not Omaha when playing. Until they make the change

mentally they are very beatable by an experienced Omaha player.