zoom BU/SB

Will KK-QQ call you on river?

yeah, it seems like one of that hands QQ-KK. 1) I would fold preflop vs 3b 4X
2) Your opponent seems weak, so You can try to steal this pot. You most probably can't bet just river bcs it is a weak line. If you want to push him out - you need double barrel him - turn and river. And fold vs Donk river.

Exactly. I had today also such situation in which I did an trial and error. One time I checked after for info and saw an underpair. Some hands later I was again very sure he had an underpair and bet river, he folded. I made a note that he can fold worse hands. Perhaps you can do something with this little piece of experience

It gets a bit expensive though, as it is a 3b pot and if we want to make him fold ew probably should bet turn and river.

Why no bluff on the turn!?! That card is a great card for our range and our opponent is showing weakness by checking the turn. I think we should double barrel here and try to make him fold his QQ/KK. After all, we are not going to win the hand any other way.

If we decide to bluff the river, we should start from the turn, yes.

Bluff turn. You have lots of fold equity and outs. Besides, he checked. More often than not it means he didn't like the A♣:.

I think betting turn and river is ok.

Thanks guys I did X B river. I doesn't like to go for so expensive bluff/bet-jam/ vs unknown.