phil_20686, on 2011-January-24, 07:57, said:
Just been reading this thread, and I actually thought the original ruling was a bit wierd. IMO, north does not have a logical alternative to 5!H. Assuming that south 4!s is cue bid showing the ace, then to make slam good you need a hand containing something like A!s AKQ!h and A!c or, A!s AKQ!h k!d and q!c. With either of these hands, (and from my thinking all the hands where north can envisage slam), south has a clear drive in his own hand. North should immeadeately sign off. I'm pretty sure that if you polled high level players assuming 3!s splinter was the actual agreement, they would think it ludicrous to encourage any more, and most would already think that the splinter was a distortion. Moreover, you would certainly bid 4!s with less than the example hands I have given, if south has A!s AKQ!h opposite a splinter he is already envisaging 5!H a!s 2!s ruffs and the splinter having AKA in the minors opposite to make up for his poor trumps.
It might depend a little on the N/S agreement (if any) on the strength for this splinter and the N/S cue bidding style. South's decision to go past 4
♥ without being able to cue bid a minor suggests that
♥AKQ is a distinct possibility and
♥Q is not necessary if South has 6 hearts. Although he would be wrong on this occasion, North might reasonably infer that
♣A is very likely to be onside and there is a fair chance that a diamond finesse, if required, will work too.
Now without the UI, North would be fully entitled to take the pessimistic view and reason as you do. Without the UI, North might also take the optimstic view and reason as I do.
But once North has UI, he is obliged to work out what logical alternatives are demonstrably suggested and to bid accordingly. The 5
♥ bid is therefore illegal, in my opinion.