Texas Hold'em Poker - Strategy - Starting Hands

While most poker authors focus on playing primarily premium starting hands, some authors claim that the importance of starting hands is overstated. Because there are only two cards dealt to each player, it is easy to characterize all of the starting hands. There are (52 × 51) ÷ 2 = 1,326 distinct possible combinations of two cards from a standard 52-card deck. Because no suit is more powerful than another, many of these can be equated for the analysis of starting-hand strategy. For example, although J♥ J♣ and J♦ J♠ are distinct combinations of cards, they are of equal value as starting hands.

Viewed this way there are only 169 different hole-card combinations. Thirteen of those hands would be pairs, from 2 through ace. There are 78 ways to have two cards of dissimilar rank (12 possible hands containing an ace, 11 possible hands containing a king and no ace, 10 possible hands containing a queen and no ace or king, etc.). Hole cards can both be used in a flush if they are suited, but pairs are never suited, so there would be 13 possible pairs, 78 possible suited non-pairs, and 78 possible unsuited non-pairs, for a total of 169 possible hands. Suited starting cards are usually considered stronger than unsuited hands, although the magnitude of this strength in different games is debated.

Because of this limited number of starting hands, most strategy guides involve a detailed discussion of each of these 169 starting hands. This separates hold 'em from other poker games where the number of starting card combinations forces strategy guides to group hands into broad categories. Also, the small number has led to many colloquial names for individual hands.

From Wikipedia's