whereagles, on 2015-January-11, 04:05, said:
Part didn't raise to 2♦ because 1♦ could be 3 cards.
Your partner and you need to adjust your thinking about competitive bidding.
In constructive bidding, you bid based on what your partner has
promised. That means that, if the opponents had passed, your partner would have passed 1
♦*.
In competitive bidding, this changes. Now you don't have the time to figure out accurately what partner has. You will have to sacrifice some of the accuracy, because you urgently need to tell partner what he needs to know, before it's too late. That means that you base your bidding on what partner is
expected to have.
Of course, opener might have a 4=4=3=2 distribution, with only 3 diamonds, but that is an exception. Responder expects opener to have 4 diamonds or more. Responder needs to tell opener immediately that he likes diamonds (and doesn't like the opponents' spades), before it's too late and the opponents have taken over the auction (as happened here when responder made the mistake of passing).
Since responder expects that there is a diamond fit, responder expects that the opponents also have a fit. That means that responder can foresee that the opponents will jam the auction and he can foresee that if he wants to show that he likes diamonds it is going to be "now or never", so he'd better do it now.
Rik
*Personnally, I would have made a preemptive raise to 3
♦ if the opponents had passed,
anticipating competitive bidding, describing my hand as 0-6 with diamond support and making it "too late" for the opponents. Of course, you can only do that if you have agreed that a raise to 3
♦ is preemptive.
I want my opponents to leave my table with a smile on their face and without matchpoints on their score card - in that order.
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