Bigest mistake do not fold Ak if i face 4bet.

Are you saying you fold AK to a 4bet, or that you should fold it? Ak would usually be a 5bet all in facing a 4bet. Folding would be a big mistake.

@jongordon84 I was kind of thinking same thing, but I thought about it some more and realized there could be some default positional matchups that it might be ok, as well as some exploitative spots with specific reads on a villain that it might be warranted. However, I also kind of feel that, if you feel like you are going to have to 3b AK and make a tough decision on whether to 5b jam or fold, that maybe it would just be better to flat the AK and take it to the streets. If you are 3b folding AK then you are basically using it as a 3bet bluff, which doesn't make a whole lot of sense to me, but maybe someone else has some insight as to where that make sense.

I mean if you had HUD stats on a villain and could see that they are only ever 4betting AA and KK and have virtually no 4bet bluffs, then 3betting and folding would be ok, but again in a spot like that I think I would just flat it. I guess if they open a lot and call 3bets a lot then it is still a value 3bet and you are doing really well when they call your 3bet, but you are just in bad shape any time they 4b. I think it is probably a pretty rare case though.

For me I tend not to 3b AK when I am MP or CO and facing a UT open as their 4bets tend to just always be AA and KK, beyond that I agree I think 3b/5b stack off is pretty standard

I agree, there may be some spots where you can make some exploitative folds or even calls, if you have a solid read over a decent sample. But I think a default strategy in 6 max you're better off using AK as one of your strongest, highest removal, all in bluffs (that could also be good against some players). 9 handed is a different story, I'd probably flat AK vs UTG, UTG+1 and maybe UTG+2. Low Jack and beyond I'm raising it up.

I play full ring,and most time when i 4bet i lost from AA,KK.Flat is better solution.

That makes sense

I decide to only play big pots with nuts,only problem is when i have two pairs,dont know what to do if i facing reraise at river,sometime call,sometime fold(often call).What you do in this situation guys?

really depends on the situation. In a lot of cases, 2p is just a bluff catcher facing a river raise, so kind of boils down to 1) is villain capable of bluff raising the river. Most micro stakes players aren't. I know I don't do it that often, not compared to what a solver would do or what a balanced strategy would call for to make bluff catchers indifferent. Also within this you need to look at board and runout and see if there are a lot of potential combos that villain could bluff with based on preflop ranges and previous action. 2) Are there a fair amount of worse hands that could be raising the river. So does the river card bring in a bunch of 2nd best 2 pair hands that villain could be thinking are strong enough to raise? Or does the villain overvalue some top pair hands. So like you have AQ and flop top pair Q, turn is a blank and river brings the A and villain has AK and thinks his AK TPTK hand is strong enough to raise river. Is he the type of player to do something like that?

I think some of #1 depends on how you are viewed at the table as well. Are you playing fairly aggressive and double and triple barreling a lot? Are you going for a lot of thin value on the river, where some of the regs you play against might pick up on that? If so they might "feel" like they need to play back at you and then they become much more capable of bluff raising the river. Are you isoing and re-isoing a rec player where they table is starting to feel like you are running them all over.

A lot of stuff to consider.