I actually agree that the bidders challenge is lopsided, especially for the hands that need to be bid after opps preemptive openings. I will use the same example from the previous reply. ♠A8xx ♥QJx ♦AKx ♣753 2♠ - 3♥ - 3♠ - ??? The first question here is "with what hands my p will or won't intervene on level 3 on the 2nd hand?" If my p is not super aggressive player the hand needs to be solid, otherwise bid 3h is a mistake. So your partners style is a very important unknown. Next question is if we take all possible hands with which my p bids 3h what are our chances to 6h and what is the probability that already level 5 is not safe? In my understanding this probability to fall in 5h hardly reaches 20% so investigating slam is not a mistake My biggest problem with the bidders challenge is total subjectivity of "right answers" in the times where it is pretty simple to give fully objective answer using the generator. While it is indeed interesting to hear experts comments, I would like to see in which % of the hands that fit the bidding (and p is not crazy by bidding 3h:)) we have only 4h, in what % of hands we have 5h and in what % we have 6h. And then we will see what the right approach (close the bidding at 4h, or investigate slam possibilities) is from math point of view.
