I didn't understand North's double: it wasn't negative, penalty, support, or responsive. The description says it shows at least ♠Qx. Can he really have anywhere from 2-12 total points? Would he be unlimited if he had not been a passed hand? I presume that 3♥ and 3♠ would have been raises, and that 3♣/3♦ would have been natural and close to an opening hand, so some ranges are carved out of the possibilities for the double. What are those ranges with respect to 3♥ and 3♠, since 3-card support with 9 total points wasn't enough?
7 of the 9 human Souths bid 4♠. (The player who has hogged 165 slots in free robot dupes in the past 30 days but has completed only 57 of those tourneys had already left.) Is the 4♠ bid clear for South and, if so, why? Thanks in advance for the feedback.