I'm no expert in 6max, i play HU, but my 2 cents:

The case where he shoved 3x pot with AK is different because it was RIVEr - the last street for the donk, there was no room for much slowplay. And in the OP case it's FLOP yet!
Also you have 2 blockers to his AK and the board has 2 blockers to his AK. Also him telling he had K has 50% chance that he is lying and he actually had some JJ, trying to make you believe that he had AK. Ofc some % chance villain mistyped K heart, but when they lie about their hand, they never think about such a simple thing, what if opponent had exactly that card in HIS hand, lol.
The pot is huge already and given that I play HU i see villains all the time donk-overbet blufshoving with ANYTHING in their range, the bigger the pot the more excited they are and go ape-nuts, that completely makes no sense and it's a losing bluff in long run. Ofc dynamics in 6max are different and ranges are way narrower, then in HU, but given all those weird lil things about this hand I'd lean towards looking him up, unless you are not rolled enough for NL200 or have somewhat 50% chance to get his money soon with 70% beeing favourite. But given that this is 6max, and fish might leave or lose money to other regs sooner then that, you don;'t have that luxury and you are better off to win right now. In HU would be total different story, but again, not against regs, where edges are way smaller.

Grunch:

How does villain Play Ax? 55?

How has villain played flopped big hands (full houses, straights, etc)

Actually a tougher call than it looks. I could go either way

Your ahead of any pair (apart from 55 and AA) and behind Ax and 55.

any more information?

I couldn't call this. Sick spot though.


Your huge 4bet looks exactly like QQ,KK,AA to any player. This deep I think villain has AK at worst AQ and when he hits gin and knows u cant have AA he shoves hoping you hero call because you obviously have to have KK.
He might Even Have AJ and be like w/e Im never folding flopped trips so Im just gonna shove.
Even monkeys use reverse psychology once in a while.

I would yawn and call that all day. This type IF he has been stacking off light and spewing etc, would flat 77 here this deep a ton then get the idea to bluff shove this flop a huge amt. of time, knowing that if he checks you will cbet and he must fold.

If he has AQ which is literally the only hand he should show up with here with an Ace, then god bless him.

Most 1-2 players no, I would fold. Him I would call.

Also keep this in mind. If he turns small pairs or whatever into bluffs here over 33% the time, then we lose money by folding. We do NOT have to be good half the time here to call, only a third. A lot of players will just pass up on this spot because they just don wanna lose a huge stack in one big swoop. That is of course negative EV thinking. Its either plusEV or minus. My vote is that it is plusEV to call.

Grunch;

Noticed there are 5 pages, so perhaps my grunch is meaningless. I will do one anyways.

When villain 3bets so big, I think his range is JJ-AA, AK+. It's not typical for an okay regular to 3b 6x from the SB with SCs or air but, let's assume 1 combo of air for good measure. I think his sizing makes it more likely his holding is JJ-QQ, AK. For now, let's assume 6 combos JJ,QQ, 5 combos KK-AA, 8 combos AK.

Then, we 4bet fairly large. Perhaps AA shoves half the time. When he flats, his range is looking like this; 8 combos of AK, 2 combos AA, 1 KK, 6 JJ-QQ.

When the flop comes A A 5 it means he can only have 1 combo AA, 1 KK, 4 AK, 6 JJ-QQ..

The thing is, I don't think hes jamming KK often, I think he checks AK some of the time here, and I think hes only bluffing JJ and QQ a small % of the time. We have somewhere around 35-50%, so call

Wow, I can see why this is 5 pages. This is where live reads come into play.

we really think villain is over bet bluffing 300bbs here?

fold.

To me it looks like he has AA. If I 3 bet large and got 4 bet, I would surely just flat to trap. But with AA on board, a shove strikes me as the best way to get paid off, knowing he has exactly KK and wouldn't expect you to shove an ace. But who knows if he is capable of that level of thinking.

I think 55 also possible here as superdeep. In this case his flop shove have sense as AK calls of course and its only chance get money from KK. But he has AK more often i think. But in this case is harder understand his shove. And third hand that comes in mind is JJ and shove as bluff.

There is zero percent chance that a 'decent enough' 1/2 reg known to be able to lay down a hand is shoving 300bbs without an Ace here, especially after the preflop 3bet. Zero, zilch, none. (And if he is shoving without an ace....he has big brass ones; find a softer game).

Sucks, but you're pretty much drawing dead here. I think this is a pretty easy shove if the villain (rightly putting you on a hand like KK/QQ+) knew you'd find it very very hard to fold. If you call even just half the time it's +EV.

Fold and find a better spot.

Completely agree here. This guy has nothing to lose by trying to induce a bluff and checking, but by shoving he has possible money to lose by pushing hero off a hand. With two aces on the board he is also combinatorically less likely to hold the other two. Chances are definitely in your favor in this situation.

*grunch*
only a really good player is shoving AK/ AQ here.
I would call and have him show me JJ.

you could not even look at the board, and a call would be correct because of the
size of the pot, and V profile.

Fold.

Wait, is villain a reg, who is not great, but kinda standard? Fold then, somehow thought it was one of the fish doing it.