The Rule of 2 The Rule of 2 states: Multiply your number of outs by 2 to get the approximate percentage of a draw you have on the turn or the river. For example, let's say you have a flush draw after the flop. There are 2 cards of the same suit in your hand and 2 cards of the same suit on the board. That makes 4 cards to a flush.
Examples of the 2/4 rule. Flush draw: 9 outs * 2 = 18%. Straight draw: 8 outs * 2 = 16%. Two overcards: 6 outs * 2 = 12%. Two pair and you need to make a full house: 4 outs * 2 = 8%. Flush draw, opponent is all in on flop: 9 outs * 4 = 36%. Straight draw, opponent is all in on flop: 8 outs * 4 = 32%. Easy stuff really.
One of the first introductions to the math of poker many players experienced is the Rule of 4 & 2, which is a simple heuristic that still holds up today. It is a simplified method of calculating your odds of hitting a draw on the turn or river. Quite simply if you have a drawing hand on the flop, the odds of you hitting your made hand is the number of outs you have multiplied by 4 when you have two cards to come, or multiply them by 2 if you have one card to come .
Rule of 4 and 2 Poker. By calculating the odds you may have, you can decide should you fold, call or rise and should you continue playing. The rule in question is simple. All you have to do is to count your outs and then multiply the number with 2, for turn or 4 for river, if you want to reach those round.
The rule of four and two was designed for when you’re facing an all in bet on the flop or turn and you have a draw. If you go all in, you’re guaranteed to see all five board cards, but if you and your opponent still have chips behind, it changes the math drastically. Let’s say you’re in a $1-$2 game.
More Poker Rule Of 2 And 4 images
You have a flush draw, so 9 outs, and with two cards to come, you have about 9*4 = 36% chances of making your flush. The rule of 2 and 4 calculates only approximatively the percentage of hitting your outs. The more outs you have, the less accurate the approximation is. Let’s take a look at some examples.
If there’s more action possible beyond the flop, shouldn’t you just use the rule of two when converting your outs to odds when debating a flop call? The 4-2 Rule as mentioned previously. The 4-2 Rule is a way to turn the number of drawing outs you have into your odds of hitting them. It’s times 4 on the flop to hit on the turn or river, and times 2 on the turn to hit your draw on the river.
Using this rule of 2 and 4, the "math" of hitting the Flush is identical (roughly 36% by the river since 9*2 = 18% by Turn and (9*4 = 36% by River), but this is NOT the same as our hand equity ...