A straight flush consists of a straight, all in one suit. So, four deuces can't beat any other four of a kind, and four aces can't be beaten by any. In poker, players construct sets of five playing cards, called hands, according to the rules of the . A straight flush is a poker hand containing five cards of sequential rank, all of the same suit, such as Q♥ J♥ 10♥ 9♥ 8♥ (a "queen-high straight. In reality a flush (five cards of the same suit) always beats a straight (five cards in a numeric sequence). A straight - flush, which is five cards of.