“If you do not have a made hand, but are on a draw such as a straight or a flush, you can launch what is called a semi-bluff. You hope to take the pot down right there, but if you do get called you still have a chance to win the hand if the next cards improve your hand. But if you get re-raised be prepared to let the hand go, unless you are receiving correct pot odds to call.”

Ratio odds 1:4 ⇒ something happens once everytime other thing happens 4 times. Or 20% of time something happens.

percentage odds had cool calcuation method. Multiply the number of cards you are drawing by 2 and then add one.

9/47 = 19%

9 * 2 + 1 = 19%

It’s not exactly accurate but really close.

<aside> 💡 I first made a mistake of understanding that 1:4 is 25% but it’s actually 20%. Then I also made the mistake that when calculating exact percentage, I calculated 9/(47-9) which doesn’t of course make sense because we are drawing them from all cards.

</aside>

Pot percentage odds needs to be lower than card percentage odds. e.g. 10% pot odds but wins 20% of time.

This method is used when we can’t be sure that we see two more cards. If one goes all in, then the odds are higher because we get to for sure see two cards.

The Rule Of 4 And 2 | The 2/4 Pot Odds Shortcut

Phil Gordon in his Little Green Book introduced this strategy to multiply outs by 2 on flop and turn when waiting the next card and 4 when opponent goes all in on flop. 2x + 1 is sligthly more accureate.

In general 4 rule gives too optimistic estimations. 2x + 1 gives slightly too optimistic estimations.