In Poker in order to win, you must have a winning hand. what does it mean? that you hand ranking needs to be higher than your opponents.It is non of it like online casino games such as: Blackjack, Backgammon, Baccarat,  where you should know the basic strategy in order to win the dealer.

Nevertheless, The gap Concept  states that a player needs a better hand to play against someone who has already raised the betting. The gap concept reflects that players prefer to avoid confrontations with another online poker player who has already indicated strength and that calling  only has one way to win by having the best win, especially if your opponent fold and as a matter of fact that’s what we are expecting to happen in any online poker game we play.

Another strategy which is related to the gap concept, used by many professional poker players is the sandwich effect. The Sandwich effect needs a stronger hand to stay in a pot when there are not yet opponents to act behind him. And since the online poker player doesn’t know how many opponents will be involved in the pot or whether he will have to call a re-raise, he doesn’t know what his effective pot odds actually will be. Therefore, a stronger hand is required as a compensation for this,