So the gross misunderstanding rule says:
Quote:
Because the amount of a wager at big-bet poker has such a wide range, a player who has taken action based on a gross misunderstanding of the amount wagered needs some protection. A bettor should not show down a hand until the amount put into the pot for a call seems reasonably correct, or it is obvious that the caller understands the amount wagered. The decision-maker is allowed considerable discretion in ruling on this type of situation. A possible rule-of-thumb is to disallow any claim of not understanding the amount wagered if the caller has put eighty percent or more of that amount into the pot.
I take it to mean that gross misunderstanding has to do with the size of the bet and not the fact of the bet though I suppose we could easily say that B thought the initial bet was 15 and therefore his raise to 65 would be perfectly legal and since he misunderstood the size of the bet he can now adjust (but I'd say in that case B is actually obliged to at least a min raise).
I kind of read the OP as saying that B didn't realize that UTG had bet and therefor I wouldn't immediately go to gross misunderstanding of the size of the bet (B can't misunderstand the size of a bet if he doesn't know the bet is there to begin with).
Honestly what I
wish would happen in this case is that the dealer tells B - UTG bet $50 what do you want to do - and then if B says he wants to raise and we get the size of that raise we then turn to UTG and say - Since he initially put out a call we can rule his action as just a call instead if you prefer.
I love rulings that punish the guy who broke a rule or wasn't paying attention to the benefit of the other player(s) in the hand whenever it's possible.
