Hello everyone!

Recently i just fell deep into world of optimal game as i found many reasons why is it always more +EV than exploitive strategy for anyone untill they develop their skill close the level of Phil Galfond and such. This topic however i dont wish to discuss. I found many problems in preflop game and i will need Run It Once members to help me with this. I would also appreciate if some of the coaches would give me an answers here :)

#1 : Preflop 6handed (NLHE & PLO) :

UTG Opens. Who has to defend here?
-So far what i understood over my theory experience, only SB and BB has to defend here, the reason is because only they put the blind money in pot.
- If SB and BB have to collectivelly defend "X" here, then SB has to defend 33.33% of "X" and BB has to defend 66.66% of X here, the reason is because SB share of blind money put into pot is 0.5bb from 1.5bb (33%) and BB is 1bb from 1.5bb.
-Note:This wasnt that hard to figure out, just a little bit of logic . Still i wrote it here to confirm from other players.

#2 : Preflop 6handed - Value , Bluff.

-What is really determined as value and what is determined as bluff in preflop?

#3 : Preflop 6handed - Late Position interference.
- If #1 is correct , there is still a problem. What if UTG opens and a position which didnt put blind money in the pot , comes along and calls?(Not 3bet) What happens then? From opposite view , What are positions with no money in pot supposed to do between correlation of raiser and defender? Ultimately, how do you construct ranges for these positions? 3bet? Cold Call? Based on what?

#4 : Preflop 6handed - Overdefense? PLO

Equities in PLO run much closer than in NLHE. In a game of optimal approach, is BB even supposed to defend the required frequency or should he defend much wider because the pot odds he is given? Equally this applies even to any position being 3bet.

The questions are somehow connected together, hopefully someone will give me really good answers and get me to understand this preflop game .

Thank you , 7th Lion