Posted 2009-January-14, 10:33
opener can't bid fourth suit forcing. that, however, is not the same as saying that opener can't punt or, as roth used to say, mark time by way of an ostensibly natural bid that doesn't match his hand.. if the stall/punt/mark time is the best call.
3♦ is obvious to the point that I don't understand the merits of any other call.
To me, the biggest single reason for the call is that it allows partner to clarify his hand. I think that it is common (altho not universal) to rebid 2♠ on minimum hands with 5-4 in the pointed suits.. say AKxxx x KQxx xxx.. this is a 2♠ rebid for most 2/1 players.
Now, responder, with xx or Hx in spades, can't raise.. maybe he has Qx AKxxx xx KQxx.. he rebids a natural 3♣ and over 3♦ can own up to his spade support.
There is no reason for us to bid notrump at this stage, and some reason not to.
Yes, if we hold Adam's 6=2=3=3 hands with xxx in diamonds, we would also punt with 3♦. Partner will bid a bad 3N only with 1=5=2=5.. with 2 spades or 6 hearts, he will bid those suits... and if he has 1=5=2=5 with no diamond stopper, maybe the suit will not run, maybe they won't lead it, maybe he has a stopper, and maybe no game makes... so it isn't the end of the world.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari