Pot odds with two cards to come
Suppose you hold Ah Kh and the flop comes
2h 4h 6s
You're pretty sure your opponent holds AA.
Let's pretend the only way you can win is by hitting your flush.
The pot is $10. Your opponent bets $5.
It comes around to you. The pot is $15, and it takes $5 to call, giving you pot odds
of 3:1. Let's ignore implied odds (your opponent knows you're on a flush draw and will fold if you make it). Also assume nobody is all-in.
Here's where the confusion is. Many poker sites
recommend using the odds of hitting the flush on both the turn and the river to calculate pot odds
. I myself used to calculate pot odds this way as well. You're a 2:1 dog to make the flush draw with two cards to come, making the call profitable.
However, it recently occurred to me that this method assumes that your opponent doesn't bet on the turn, or else you would have to pay extra to see the river. So does the proper way to calculate pot odds on the flop only take into consideration the next card to come (the turn)? Continuing the example, this means you're a 4:1 dog to make the flush on the turn, making the call unprofitable.
Does this means that you should fold a flush draw most of the time on the flop, unless it's a multi-way pot?