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Originally Posted by pg_780
Okay, we're playing GTO now. (That's always kind of my approach)
Great. Mine as well.
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In order to keep our balance, we should widen our range along with his and he should still be indifferent to calling or folding on the flop given our entire value raising range--which will be wider now, in proportion to his widened range.
Yeah, but we're not talking about the EV of our entire value range. We're just talking about the EV of 22. For example, no matter what a pair of 22 is NEVER going to be in our value raising range regardless of how wide the Villain opens. So on the flop, our value raising range will always be the same with 22, it will be the times when we flop a set. Right?
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So he shouldn't be more likely to stack off with his tight range or his wide range, because we are supposed to have an adjusted value raising range which he, in turn, should have adjusted to
I don't think this is correct or I'm not understanding you correctly. In my opinion. from a GTO standpoint, the Villain should devise a flop betting range which he can bet for value (on the river), and he should in turn balance it with bluffs. You agree with this right?
Now let's assume that we have a static calling range regardless of his opening range (it doesn't matter because we're just arguing the EV of a single hand vs his two ranges). Let's say our static calling range is 15%.
So high tight range of QQ+ will be able to bet for value against our static calling range of 15% at a high frequency on most flops. The reason this is the case is that we need to defend enough to be able to keep him from bluffing with any two cards (obviously this might be difficult -- but we should defend as much as possible that is still +EV). If we defend against his flop bets by raising with our sets, we should balance it with bluffs to make the Villain in different to calling or folding. If I remember correctly, assuming normal raise amounts and 2 players to a normal flop and 100bb effective stacks, this will usually come out to something like 20% of his flop betting range.
So let's say that he can value bet 100% of flops with his range, but he will need to defend 20% against our raises. He will be stacking off with 20% of his pre flop range. Right?
Now let's look at this with his wide range. His wide range won't hit the flop nearly as often. So he won't be able to bet 100% of his range on the flop. Let's assume that he will be able to only bet 50% of his entire pre flop range on the flop. The other 50% he needs to check-fold / check-call some %.
So he needs to stack off with 10% of his entire pre flop range. Let's assume that he will check-fold the other 50%.
Let's do some crude EV calculations.
TIGHT RANGE: 20% stack off. Our post flop EV -- assuming we're never behind:
Postflop EV for 22= (.2 * 104.5) = 20.9
WIDE RANGE: 10% stack off. 50% check-fold:
Postflop EV for 22:
Villain bets and stacks off = (.1 * 104.5) = 10.45
Villain check-folds = (.5 * 7.5) = 3.75
TOTAL EV AGAINST WIDE RANGE = 10.45 + 3.75 = 14.2
CRUDE POSTFLOP EV for 22
Tight Range = 20.9
Wide Range = 14.2
But this was assuming the hand started on the flop. But we know it didn't. In my example I made the pre flop raise size 3x, but if for some reason the pre flop raise size was 17bb, then the following would be true.
TOTAL EV of 22
vs Tight Range = 20.9 - 17 = 3.9 bb
vs Wide Range = 14.2 - 17 = -2.8 bb
CONCLUSION: The correct play would be to call 22 against the tight opening range, but to fold it vs a wide opening range.