Posted 2007-February-01, 11:07
The choices are: Pass, 3N or 3♦.
we can eliminate 3♦: it aims at winning a partscore battle. While I doubt that 3♦ is likely to get doubled, it may easily be -200 and even when it makes, it will be 110 or 130 against a probable 50 or 100 our way. Yes, it could be a double-partscore-hand, but that is a narrow target. And the chances of our getting to a making 3N after a 3♦ start are between slim and none.
3N: if we are bidding, this is the bid: when it is right, we get a big payoff. It is unlikely to get doubled since RHO has no idea who has what opposite a wide-range 3rd seat favourable preempt. We may even make 3N on hands on which 3♦ fails!
OTOH, when 3N fails, it is in multiple hundreds: down 4 would be no surprise.
Pass is the safest call, and has an expectation of a small plus more times than not: certainly, we will go plus on many hands on which we'd make 3♦. But when we make 3N, our +100 will not help much.
And there remains a tiny chance that partner will balance: but if we take any extended time making up our mind, we likely lose that chance... partner will/should consider himself barred.
Having done all this thinking (and, yes, it can be done in 10 seconds, even if it takes longer than that to read it), I'd bid 3N.
I would NOT do this if LHO were unpassed: then the chance of a double would be too high. If LHO were unpassed, I'd pass.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari