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PREF5LVL.DBA
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1995-08-30
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GETTING A PREFERENCE AT THE FIVE LEVEL
When you have bid one or both suits of a two-suited hand opposite
a silent partner, and you want him to take a choice (as a save,
perhaps) over, say, an opposing 4S bid:
-- With more length in the higher ranking suit, bid 4NT.
-- With equal length, bid a lower ranking enemy suit; if not
possible, bid 4NT.
-- With more length in the lower ranking suit, bid that suit.
Suppose you open 1H with S-2 H-AJ10876 D-AQ1098 C-9, and the
bidding goes:
South West North East
1H 1S Pass 4S
4NT Pass 5C Pass
5D
North's 5C bid just shows a preference of clubs over hearts; she
doesn't know which minor you have. You correct to 5D, and North
knows you have a red two-suiter with longer hearts, or perhaps
equal length. With 2-2 in the red suits, she will prefer hearts.
If the hearts and diamonds were reversed, you would have bid 5D
over 4S. North would then pass with a doubleton in each suit,
knowing your diamonds are longer.
Obviously the 4NT bidder must have touching suits or suits
separated only by the opposing suit(s).
Another case: You open 1H with S- void H-AK9843 D-AJ10842 C-4, and
the auction proceeds:
South West North East
1H 2C Pass 4S
5C
The 5C bid implies equal length in hearts and diamonds. With xx in
hearts and Qx in diamonds, North should bid 5D. With longer hearts
you would have bid 4NT, and with longer diamonds you would have bid
5D. Had the lower opposing suit not been available (e.g., the
opponents had bid spades only), you would have had to bid 4NT. This
would show hearts and clubs, and partner would only know that clubs
are not the longer suit.
When the opponents leap to a major suit game after you have opened
1C, a 4NT bid by you asks for a minor suit preference. Of course
the clubs will be longer:
South West North East
1C 1S Pass 4S
4NT
South's hand is S-4 H-8 D-KQ1097 C-AK10632
When the opponents rush to a major suit game after you have opened
the bidding and partner has made a one-over-one response in a suit,
a 4NT bid asks her to choose between your suit and hers:
South West North East
1D Pass 1H 4S
4NT
South implies a long, strong diamond suit and three-card support
for hearts, something like: S-4 H-KQ3 D-AK10853 C-A94. In doubt
whether to bid 5D or raise hearts, South lets North make the
decision. South could also have both minors plus hearts: S- void
H-KQ3 D-AK1085 C-AJ976. With weak hearts, North should bid his
better minor. With the first hand, South will correct a 5C bid to
5D. Had North responded 1NT, the 4NT bid would show both minors.
Had the response been two-over-one, 4NT would be Roman Key Card
Blackwood (RKCB), with responder's suit "agreed."
Responder can use the 4NT bid in a similar fashion, provided opener
has passed (i.e., 4NT is a reopening action):
South West North East
1H Pass 2D 4S
Pass Pass 4NT
This is not Blackwood. North has S-5 H-Q87 D-KQJ973 C-AJ9, and
wants opener to choose between the red suits. If opener has not
passed, however, 4NT would be RKCB:
South West North East
1H Pass 2D 2S
3H 4S 4NT - RKCB
An overcaller can use the same device:
South West North East
1H 2D 4H Pass
Pass 4NT
West is asking for a minor suit choice, and his diamonds are the
same length as his clubs, or longer. With longer clubs, the right
bid is 5C, not 4NT.
Also see chapter FOUR NOTRUMP - BLACKWOOD OR NATURAL? in the book
"Strong Bidding."
GETTING A PREFERENCE AT THE FIVE-LEVEL was published in Popular
Bridge magazine, June 1977, and the Contract Bridge Forum, January
1982.