1/2 NL. Three hours into session. Ten handed.

Hero (UTG, $550): Hero has a TAG image. Out of the ten people at the table, it's a mixture of six tight players and four loose, and a combination of tight aggressive, tight passive, loose aggressive, loose passive. Hero hasn't shown down too many hands, but the ones he has shown down have been strong.

Villain (MP1, $400): Villain is a reg that hero plays with. Villain is one of the tightest players hero plays with, with the exception of one reg and an occasional super NIT. Villain has played around ten hands so far today and notably won an all in pre flop with KK vs AA when he rivered a straight. Villain usually doesn't show too much aggression unless he's confident he has the best hand. Villain usually only plays big cards, but will occasionally play suited connectors or suited aces from the BTN only when there's already 3+ in the hand.

OTTH

Hero is dealt A K and opens to $10. Villain calls, BTN calls and SB calls.

Flop ($42): K 10 5

SB checks and hero leads out for $21. Villain raises to $50 and everyone folds, except hero who flats.

Turn ($142): K

Hero checks and villain bets $85. Hero?

Not really sure why we don’t just b/f the flop vs a nit. What is his raising range? Most nits have at worst AK here, you should know his raising range otf better than we do since you play w him a lot

Vs. described V, I just call turn and probably check/call river unless I hit a FH. His betting into you is a little scary considering AA, AK, and less likely KK are easily in your range. I guess he could have KQ? Seems so much like TT or 55, but we are too strong to fold.

I haven't seen him raise too much in the past. I thought by getting almost min-raised that the call on the flop, evaluate on turn was the right move. I can understand why you would fold, but to such a small raise I don't think this needs to be a fold.

+1

If you figure his flop raising range is primarily sets then I think you can just fold to the raise. Why bother paying him another $30 when you only have 5 outs to improve to a better but still possibly 2nd best hand. It seems really nitty and exploitable but if he doesnt have a lot of bluffs in his range, let this one go. Now youre in a situation where you have enough outs + sdv to see one more card, but I think I could see folding if he shoves a blank river.

Keep in mind the K on the turn really didn’t help you much. Odds are very slim that it improved you (AA and 10 5) are the only two hands you improved against. Most won’t flat $10 w/ AA or 10 5 so odds are the K didn’t actually help you.

I would assume i’m ahead and shove CRAI against an unknown and most known V’s. If he’s a nit he’s not calling 55 preflop so you’re only behind to 10’s. Too narrow a range for me to lay it down and too strong a hand for me to c/c. If he has 10’s good for him. If I thought he had a broadway draw I might get FPS and flat the turn but would then regret it on most run outs.

If we give him TT, 55, KQ and the 1 combo of KJs (too wide even?) and 3 combos of AK we are way behind his range here. Also unless we want to lead river we let him play his range perfectly and risk another mistake. I think he would 3 AA or check it back OTT so unfortunately this is looking like a fold given the action.

Depends how nitty he is and how well you know him. Sounds like at best, you're chopping.

Main thing I want to know is how he plays AA/KK pre. If he normally raises AA pre, then I don't see him raising the flop with anything other than AK/TT. If he doesn't raise his AA's pre, then his super nitty range combined with the flop raise suggests hero is boned here.

What’s his worst raise? ok, now fold OOP and you own him.

He would definitely have 3! AA or KK. I don't think he would with AKo, but probably AKs.

This is seriously a massive leak and the advice in the thread so far has me at a loss. This is the second nittiest reg in your room, FOLD TO THE FLOP RAISE. Come on guys, nits don't raise even AK on that flop, why would they? This is live 1/2 you need to play super exploitatively, the nit raised you on a rainbow flop, idc if it's a min raise, just fold, this is 55,1010,k10sooted like 99.9% of the time against a nit. Calling is lighting money on fire.