Best Flush is one of the Poker variations. There can be up to ten players in the game. Each player receives one card face up and one face down. There is a betting round after the deal. Each player is dealt one card face up. There are deals and betting rounds until each player has 5 cards. The last bet and then players show their cards. He, who has the strongest hand wins the pot. Only Flushes and Straight Flushes are winning combinations. If no one has a Straight Flush, best Flush wins. If no one has a Flush, best Four-card Flush, Three card flush, or Two card flush wins. Online Straight Poker Bets.