hero has been playing a long live session. now it's late at night and the game got short and actually quite nitty, so hero decides to call it a night. he is UTG, in what will be his last hand of the session.

tired and impatient, hero looks down at his first card, the A, and decides to raise without looking at his other 3 cards.
of course, hero makes sure no one else knows anything about his 3/4 blind hand, using fake card squeezes...

anyhow, HJ folds, CO folds, BTN calls, SB folds and BB calls.

Flop (3 players, 6 small bets): 239

not a bad flop! no real reason to look just yet...

BB checks, hero bets, BTN calls, BB folds

heads up! it's an easy turn bet now...

Turn (2 players, 4 big bets): T

hero bets, BTN calls

he still calls... we might have to look, unless...

River (6 big bets): K

the nuts!!!! (maybe...)

hero bets, BTN raises!

hero didn't expect that! now he has to look...

...but before he does, please help hero decide which hands to 3-bet (besides the nuts, obviously...), which to call and which to fold...

That's virtually impossible. Hero has the one card needed for the nuts, the A. In real life, Villain might be expected to call (to pick off a bluff) with any spade flush or various other hands.

(no kidding)

Interesting question.

Would Villain fold any non-nut spade hand to a three bet? If so, Hero should three-bet every possible hand.

Would Villain raise/call with a non-nut spade flush? If so, Hero should three-bet with the nuts and fold everything else.

(However, since a three bet from Villain is totally unexpected, we could not logically know whether or not Villain would call or fold to a three-bet from Hero).

A foolish Villain might suspect Hero of playing for low and betting the scare card when no low appeared. In that case, Villain could have almost anything. And in that case, I think Hero has to call with almost anything.

Buzz

raise no matter what. if he calls insult him (if u don't find another spade in ur hand).
if he folds say good fold.

+1. There's really no reason to look at your hand. You've led the whole way, so there's no reason to put you on the flush. Villian may be betting the scare board or the non-low board--either way, re-pop it. If you get called, lay your hand and announce, "I've got the Ace, Biatches!!!111" If it urns out that the dealer failed to give you a companion spade, then you still have a chance at inducing the muck.

No need to thank me...

I'm wondering if villain backed into a straight or two pair, but would still snap-fold to a 3-bet. There's zero chance he's 4-betting, LDO.

But yeah, like others have said, I don't think your cards matter in this spot, so there's no point talking about a 3-bet for value that isn't the nuts. It's all about what's in his hand. I'm guessing he calls holding any flush.

in my experience, these plays never work in limit o8. optimally the player should always fold to a 3 bet without a nut flush because you will easily have nut flush enough of the time for a fold to be correct. fortunately, "the player" does not play optimally

play it straightforward and value bet people.

My advice is to leave one round earlier if you find yourself susceptible to playing a hand 3/4 blind for "fun".

I agree...you're getting what, 4.5:1 on a bluff, I can't believe this would work anywhere near that. I mean think about situations like this where you do have the nuts, a guy hits a J-high backdoor flush or whatever and raises you, does the action ever go bet->raise->3-bet->fold? No, you get paid off like every time there (or he just calls, but he doesn't raise planning to fold to a 3-bet unless he's bluffing).