The work we did in the previous thread is relevant, but we need to be aware of the differences, too:

- SPR is higher
- We're HU and OOP against a tough reg
- This board is more coordinated (a straight, flush draw, and various straight draws) 
- Our hand is weaker (KK on low/wet board << AA on low/dry board)
- Our high-card heavy UTG range don't represent well the hands that matter most (nut straight and strong, nutty draws)

In the previous hand, we were pretty sure we were up against two tight ranges that totally missed the board. Given the circumstances, we expected the opposition to play tightly and straightforwardly. And with lower SPR, comes lower stackoff requirements. 

Here we're OOP against a single tough player on a board that misses our range, and it's obvious. SPR and stackoff requirements are high. Therefore it's a good one for him to attack in position. His preflop calling range can credibly represent strong flopped hands and hands that can become strong. When SPR is higher, these hands matter more.

We absolutely can't bet and shrug-stack-off when he raises. We can't bet-call either. We're very unhappy when he just calls. And we probably don't want to c-bet this dry overpair in the first place (if we do, it's effectively a pure bluff). Because it's a good situation for him to attack us, and we are defenseless when he does.

If you check, check-fold. Playing a nothing hand passively over three streets OOP vs a good reg is a hopeless proposition.

When he doesn't 3-bet, his range becomes more weighted towards low cards. The fact that he is good and aggressive means he will contest pots. That is fine with us when we actually have a hand, but here we don't. 

His range is not capped just because he rarely has AA. He can represent hands that matter (naked AA doesn't matter much here), there are more of these hands on this flop than on the 7 4 2 rainbow flop, and in a single-raised pot he has leverage to push us around. We can't expect him to play an honest raise/fold game here. We can expect him to play a tough raise & float a lot game. He'll try to force us into making tough turn and river decisions out of position.

We simply can't defend against that. If we bet-fold he wins. If we bet-call, he can push us around on future streets. If we bet-get-it-in, he will fold when he's bluffing weak, and crush us when he stacks off (= suicidal for us).

Since we expect him to use his positional advantage/leverage a lot, and since we happen to be defenseless when he does, a simple and valid solution is to just check-fold. Because you have a weak hand with high SPR OOP against a tough player, and the board will just get uglier and uglier for you. He knows that your tight range rarely hits this board well enough to stand a raise or to bet more than once (whereas on the 7 4 2 board with low SPR, stackoff requirements were lower). No shame in giving up. 

If you bet here, you are pure-bluffing since you can't continue against a raise, and you have to check-fold the vast majority of turns when he calls. Just being aware of that, will save you a lot of trouble, whether you c-bet or not.

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also with the (KK on low/wet board << AA on low/dry board)...isnt is slightly better that we can bet and get value from Fd's?

If you bet and a draw calls behind you, are you happy? What is your plan for the next two streets when the board gets uglier and uglier and you have no idea what improved him and what didn't?