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NEGHIGH.CDA
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1995-08-26
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NEGATIVE DOUBLES OF HIGH-LEVEL OVERCALLS
If using negative doubles, they apply through 4S, and:
New minor suit responses by an unpassed hand are forcing.
New major suit responses are not forcing. To force, double and then
bid the major.
Let's look at all negative double situations:
South West North
1C 3D Dbl
This double implies support for both majors, but may have only one
major plus club support, or a notrump hand. This sequence is the
only one in which the doubler promises to bid again if opener bids
an implied major. If he has support, he will raise; if not, he will
bid. Either way, he won't pass. Accordingly, this double requires
12 points or more (a little less with club support clubs), and
opener need not jump in a major to show a good hand with 15-16
points. A jump would therefore show a better hand. In other
situations the doubler may pass a bid in an implied major.
South West North
1C 3H/3S/4H/4S Dbl
1D 3H/4H Dbl
1S 4C/4D Dbl
These doubles imply at least four cards in the unbid major.
South West North
1D 3S/4S Dbl
1H 4C/4D Dbl
These doubles imply five cards in the unbid major, or a very strong
four, since opener is unlikely to have that suit.
South West North
1C 4D Dbl
The double shows both majors, or one major plus good club support.
Opener bids 4H with both majors. An interesting auction:
South West North East
1C 4D Dbl Pass
4H Pass 4S
Since she doesn't have hearts, North's spades cannot be very good
or she would have bid 4S over 4D. South can safely retreat to 5C
with short spades, since North must have club support to bid this
way.
South West North
1D 4C Dbl
The same principles apply as in the preceding sequence, except that
South should prefer to bid 4S if perchance he has both majors:
S-A876 H-A843 D-A9765 C- void. In view of the 1D opening, North
would not press for a negative double with four hearts and no spade
suit, so South should figure that North is more likely to have
spades than hearts. If South bids 4H, North will not be able to bid
4S without a good suit.
South West North
1H 3S Dbl
North has a maximum of three hearts, may have both minors, or
perhaps diamonds only. She could not have clubs only, because she
would have to bid 5C if South rebids 4D. With a hand that good she
would bid 4C instead of doubling.
South West North
1S 4H Dbl
North probably has both minors, with a tolerance for spades. What
do you do with S-3 H-KJ72 D-A842 C-7632? You pass and hope opener
can double. That's the price you pay for playing negative doubles.
South West North
1H 4S Dbl
Here too, North probably has both minors and a tolerance for
hearts.
Doubles of natural jump overcalls in opener's suit are negative
doubles, not business doubles, although opener will of course pass
the double more frequently:
South West North
1C 3C Dbl
1D 3D Dbl
1H 3H Dbl
1S 3S Dbl
If the overcall is conventional (e.g., asking for a stopper), the
double shows support for opener's suit but not enough strength for
a four-level bid.