The goal is to create the best five-card hand possible by combining these community cards with their hole cards. Pre-flop (after hole cards are dealt), post-flop (after three community cards are revealed), post-turn (after online gambling slotsthe fourth community card), and post-river (after the fifth community card) are the various rounds in which betting takes place. These betting rounds give players the option to check, bet, call, raise, or fold. Poker hand rankings play a key role in deciding the winner of a showdown. Royal flush, straight flush, four of a kind, full house, flush, straight, three of a kind, two pair, one pair, and high card are ranked from highest to lowest.