All-in poker or all-in is a bet on which the whole game will depend. All-in is above all others in terms of responsibility. This bet will allow you to increase the stack many times, or lose everything. All-in Preflop The first rule that should be learned by a player who wants to bet all-in at the very first stage of the game is to always assess the situation and thoroughly check the justification of this bet. In this case, it is necessary to pay special attention to the number of opponents who can potentially call the bet. The best condition for going all-in is considered to be if the player is completely sure that only one opponent will support his bet. Of course, the more participants in the game equal, the larger the pot can be won back, however, this significantly reduces the chances of winning. For example, a player who knows that he is the only one playing with a pair of aces preflop can expect 80% to win. But this percentage decreases significantly in proportion to the number of players calling the bet. Most players call early in the game when there are a lot of players from weak players. There are situations when opponents put all-in with very unexpected combinations, it happens that the whole table can go all-in in tournaments and biggest jackpot, and a pair of aces does not necessarily win.