Zelandakh, on 2014-March-12, 11:07, said:
Perhaps they are planning to bid 5♣ over a 4♠ response showing the 2 outside controls?
Why are they showing ? What is it that they expect pd to learn and know exactly what to do ? Why not asking instead ? Are you telling me they are on their way to show everything except than spades so pd can understand we have problems in trumps ? If so just ask and learn his spades. Where is that rkcb fobia coming from ?
Cyberyeti, on 2014-March-12, 08:15, said:
But what do you lose by bidding 4♥ before 4N over 4♠ ? If partner does bid 5♥ or 5♦ as here, you just bid the slam.
What do you gain if you are going to 4 NT over 4
♠ anyway ? I could have sympathy if you told me that you would pass over 4
♠ thinking pd holds something like AKJx Txxxx void Qxxx but i already wrote above and gave examples why this is gonna cost problems in another hand. I will not be able to stop if pd has this and we are not down yet. But i suppose you would want your pd to bid 5
♦ with this and come to slam like me anyway.
I also wrote what you will lose by bidding 4
♥. Some may even argue that 4 NT after 4
♥ when pd did not cooperate, is not rkcb, since we could rkcb the previous round if we wanted to.
You lose by giving road map to opponents, 4
♥ or 5
♥ will not only give opponents some info but also will give hints about the lead. It may be doubled or even not doubling is a hint. You lose by reducing the time for the declarer play in a MP event, and you torture your pd for no gain. You will sometimes also lose by opening a road to hesitation and legal issues for no gain. For example you bid 4
♥ and pd bid 4
♠ a little slow, now you have a headache, and a big one trying to explain opponents and TD that you were planning to use 4 NT anyway, when they asked you then why you did not previous round ? You need to protect your pd, your self, from little obstacles like that when the merit of a fancy bidding does not justify taking all these risks and losses.
Note that i am not saying the slam i am driving to will be a good one always. But once we decided to move, cueing is not gonna help us investigate and learn efficiently in this hand while same method does not cost in another hand. Basically we should keep it simple and spend our time and focus on the declarer play of our slam.