The most difficult thing is to calculate the probability of the combination falling on the flop, because in this case the player has only two cards and a lot of different options that the board can provide. Therefore, the majority of players do not calculate the numbers pre-flop, but make decisions, given the strength of their cards. The beginner to learn their prospects is easier on the table of starting hands.
When the flop is already open, the calculation of the indicators is simplified, since you already have five cards, the information about which can be used for calculations. First of all, you should evaluate the situation and find out what combination is required for you to win. Let’s say that you have four suited cards – in this case you will be tempted by the desire to make a Flash, which will be very promising for investment, especially if among the pocket cards there is an Ace. To understand how many chances you have to collect the Flush when opening further cards, you will need to make two types of calculations:
Calculation of outs – an indicator is suggested below them, reflecting the number of cards available in the deck and capable of bringing you the desired Flush. Find out their number is quite simple, because you know how many in the deck of cards of each suit. They are thirteen and, considering that there are already three of them on the table – there are still nine left in the pack. It turns out that you have nine outs.
Calculation of the probability for the Turn or River – to determine the exponent there is a complicated mathematical formula, but we will not use it, since there is another way to find out the data in a simplified scheme. Having determined the number of outs, you need to multiply their number by two and add one if it is less than 12 or two if it is equal to or greater than 12. In our case, the indicator is 9, multiplying 9 by 2 and adding 1, we get 19% – this the probability of making a Flush on the Turn or River, having received another common card.
Calculations for two streets – here the number of outs should be multiplied by four and nothing added is not required. However, in this case, for a large number of outs, the indicator is greatly distorted to a larger extent. Despite this distortion, this method is used by many poker players who do not use poker calculators, since with a large number of outs, the decision in most cases will still be accepted in the form of a bet, as the chances of winning are too high.