This spot is interesting insofar as we have wide ranges to start with and both ranges (SB-open-range and BB-defense-range) should roughly have equal equity on this particular flop.

I´d say we should have round-about 50% cbetting range and I´d start with any set, any overpair (maybe exclude AA) and 9x down to 98. Furthermore I´d bet my too-weak-to-x/c-showdown hands like 55-77 for value / protection, as well as 4x / 2x. I´d add a bunch of bluff-combos (like gutshots, overcards up to AJ, overcard+backdoors etc.).

Check-call with AA, the weaker 9x, 88 and all hands that have good equity (like AQ, AK).

Very nice flop to cbet. BB almost never flop a good hand and it makes less attractive for him to raise our cbet. BB has never TT+++ but we can reasonably have so attacking on this board texture even with second and third barrel makes sense. We can add bluff combos to our cbet range  more then GTO lets or just cap it to %50. I just bet bet bet impudently and rarely check / call, very rarely check / fold  and never build a check raise range on this flop. Frequencies will change depends on pvp dynamics.

i remember it from Sean Lefort's video advanced theory priniciples where he says " the highest an optimal bluffing frequency can effectively be is 50% in a situation where we bet infinity into a finite pot size ". 

betsize implications 

X = 1/2 POT  Z = 25 %

X = POT Z = 33.3 %

X = 4xPOT Z = 44.4 %

if you think im wrong about cause and effect relation please correct me

No doubt, that´s correct, but somewhat unrelated to this topic, for two reasons:

1) This means you´re betting $1,000,000,000... into $1, in this case you could bluff 50% - and Villain couldn´t do anything about it.

2) It means 50% bluffs of your overall-betting-range, so think about how narrow your valuerange would get if you bet large amounts on the flop? Obviously, the narrower your value-range gets, the narrower your bluff-range gets.

Additionally, you can bluff more than 50% on the flop, because there are more streets to come, but as your overall equity against Villain´s range is merely 50%, your actual valuerange is not that wide. And with a tiny value-range, even a value:bluff-ratio means little bluffs.

I agree with you BigFiszh i just want to point out here that this is the board we can attack comfortably in a sb vs bb situation. Whenever bb didnt 3bet maybe AKX, AQX are the best boards to attack. Boards we flop OP where he cant are second best boards to attack if we try to rank boards by vulnerability for BB. We are always in a bad shape sb vs bb but this spot is lesser evil.

I've reached close to what I think is
the least exploitable bet/check ranges on the flop for SB. I'm
cbetting 54%, checking 46%. My checking range has just enough air to
prevent BB from being able to profit w/ no equity bluffs and just
enough air to ensure the range isn't too bluff catcher heavy so that
BB will never have incentive to bluff.

For my bluff range I've included all 2
overcard hands up to KJ, 50% combos of T7o-J8o (1 over+bdsd), all
combos of bdsd+bdfd hands and most combos of strong bdfds. Here are
some screenshots:

Cbet:

Check:

PS: As an aside, I'm
working w/ ~50% ranges here preflop which is likely different from
what GTO SB open % and BB call % look like. I averaged 20 of the
winning regs I have 20,000+ hands on in the games I play (MSNL-HSNL)
and the average SB open was 47% and BB call v SB open 38%. It's my opinion
assuming that SB opens ~50% we can flat closer to 50-60% profitably
so to simulate what my typical PF ranges will look like in the games
I play in I went w/ ~50% open and defend. Changing to much tighter or
looser ranges has a pretty significant impact on how we play this
board specifically.  

I include 99 in my c/c range to make it more resilient when facing barrels and overbets. I'd rather cbet 22 than 99 because 99 blocks all the 9x combos we get value from. 22 will get more value betting than 99 and 99 will face a more bluff heavy betting range than 22 when checking.

88 is a borderline hand that I believe is too weak to bet bet bet and may get more value when c/calling.

Oh and as for KQs w/ bdsd+ bdfd it is certainly a hand strong enough to bet but we have plenty of other air candidates to add to our bluffing range and many less hands which are strong enough to c/c with here.

KQs is a valuable addition to our c/c range as it helps us proceed on K and Q turns which we don't cover well otherwise.

Awesome stuff Zizek. Looking forward to your analysis  of other spots. :)

It depends how your raising range looks like. Normally you would like to bet flop with a polarized range and have about 2, 5-3 (depending on equity) bluff combos for every value combo when being in pos on flop. 

Great wisdom, now I´m seriously impressed. :|

I dit not try to impress you M BigFizh and I also did not think anyone would be impressed. I only wanted to share my thoughtprocess when constructing a range in this spot to contribute. I honestly did not think that my thinking process was standard among all RIO members.

I will not do it again.

BigFiszh,

You said earlier in the thread that we should be able to bluff this flop more than 50% since we there are more streets to come, but when we don't position or the stronger range, can we really expect to get away with bluffing much more than 50%?  Does the fact that we can bluff future streets still give us enough reason to have more "bluff" combos than value, when we don't have a range advantage?  

I know you aren't advocating we bluff this flop too liberally, I'm just more curious how our ability to bluff future streets comes into play when we don't have position or any sort of range advantage. Thanks.

hey guys, u all suggest to cbet weak pairs for protaction, I think I'm missing here smth, cause I don't see much point in betting let say J2 or 54 on 942r. 

When we cbet it, we gonna have a hard time trying to see SD. What's the plan on many overs? We X on tern overcard or bet again & tern hand into bluff?

I like to add this weaker hands to my Xc range, cause I rather want to SD with them than put extra money in pot.

Can u explain why u think betting is better?

Thanks in advance!

Whats your plan with J2 or 54 once you checkback ? call turns and then ? You either have to be balancing a bit by betting weak made hands or checking stronger made hands to protect your range. For me it is an easy choice: I bet weak.

It looks like we have about one "bluff" for every value bet we have on the flop.  I realize this isn't the best way to look at the situation since our bluffs have equity, just not sure how else to frame it.  How does this impact our barreling strategy on the turn and river?  Seems like we might not have a ton of bluffs left by the time we get to the river unless we continue a ton on the turn?