Why are you choosing this?

There’s QTs(4), 99(3), 88(1), 66(2), 89s(3), J9s(1) for 14 nutted combos ahead of Kk

As for worst hands, there are AJs(3), KJs(1), QJs(3), JTs(3) for 10 combos that we are ahead of.... maybe some more AJo, but still imagine some get folded preflop given Bb vs Bttn and the 4x 3b sizing....

Seems to me that an overbet would actually generate some Jx to fold, and if we check raise, I think a good amount of that Jx would be checked back on turn(QJ/JT), so we’d be ripping it into a pretty strong range. Imagine a lot of the floats are folded on flop with the bigger flop sizing.

But maybe I’m a bit too far removed from online games atm and no one is folding Jx to a 1.5x overbet. In which case that seems like the play to make

It turns out KK isn't behind that many hands in terms of absolute hand strength but has quite low equity overall. It has very bad playability on rivers because it will usually be a bluff catcher. However, it's strong enough to shove and do fine while also winning a lot from folding out hands that play well vs it.

The screenshot below highlights it well. The number in bottom right is equity (equity now and against same range on a blank river):

Composition of calling range against a shove with the best response (not much reason to assume a completely different range for a 200NL online reg):

Can you explain why choosing 28$ bet otf and not 1/3pot ? Its seem to me that T,J,Q high semi cordinated we have a lot of value with overspairs and top pairs that want to bet big . is it right ?

Turns out almost all bet sizes within a certain range are viable and won't impact the win rate as long as you execute it perfectly. That range should be from around 30% pot to around 100% pot on this flop but I am not sure about exact borders.

Ott this card complete the straight and a lot of two pairs in IP range and still pio mix bet and check with KK - why pio prefer to bet agaist this strong range of IP ?

Low SPR and it wants to fold out hands with good equity. Strategy if you change turn SPR to 7 after flop play with same stacks as in HH:

I think you missed the point. The only thing I tried to show is that few hands are ahead of KK now but it's still only got 64% equity, and I just added a river card in range explorer to show that (it's not Pio's range on 2h after bet or check). The lowish equity while still being ahead of most hands is exactly when you want to overbet shove a hand (think low PPs in the BB vs a wide preflop open at 20bb).