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13MULTI.CMA
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1995-09-04
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DEFENSE VS MULTICOLOR OPENINGS
A "multicolored" opening shows one of two specified suits, neither
of which is named by the opening bid. The simplest of such openings
is the "Mini Multicolored Two Diamonds," which shows a weak two bid
in spades or hearts. Responder bids 2H if he would pass a weak two
bid in hearts, 2S if he would pass a weak two bid in spades but
would raise hearts, and so on.
The following defense against "Mini" may be used against any
muliticolored opening that shows one of two specified suits.
-- A double says, "I could have bid what opener just bid." It is
probably a normal 2D overcall, limited in strength. If you can
safely bid 3D, do so, because it describes the hand better than a
double does. The double can be based on a strong hand, however,
perhaps two-suited or a good hand for notrump:
South West North East
2D Dbl Pass Pass
2H 2S - diamonds and spades
2NT - natural, plus good diamonds
The 2NT bid shows hearts stopped, of course, but the spade holding
may be sketchy: S-J3 H-AQ D-AKJ32 C-K765. After doubling 2D, a
double of another suit is for takeout if partner has not bid or
doubled:
South West North East
2D Dbl Pass Pass
2S Dbl - takeout: S-3 H-AJ87 D-AKJ87 C-Q32
-- A notrump overcall is natural, about 16-18 HCP if the overcall
is 2NT, maybe a slight gamble based on a solid minor plus outside
stoppers if the overcall is 3NT.
-- Simple suit overcalls are natural and limited. Jump if you have
significantly more than a normal overcall promises. Don't use weak
jump overcalls.
Since multicolored openings are generally forcing, you can pass
and act on the next round when lacking a suitable hand for first
round action:
South West North East
2D Pass 2H Pass
2S/Pass Dbl - a normal takeout double
Although it sounds like a possibly marginal reopening call when
made over opener's pass, the double may be based on a very strong
hand. It implies shortness in the major indicated by South and
support for the other suits, especially the other major.
The forcing nature of 2D makes it possible for a defender to
differentiate between marginal overcalls and good overcalls. As a
rule, immediate bids are apt to be stronger than second round
bids:
South West North East
2D Pass 2H Pass
2S 3C - not a very good hand
Even after North's sign-off, West's bid should not be too light.
North could have a good hand but short hearts.
A double of a 2H response to the opening is for takeout:
South West North East
2D Pass 2H Dbl - takeout
A double of a 2S response is for business, showing spades, since
responder shows good hearts by bidding spades (i.e., he has a heart
raise if opener's suit is hearts):
South West North East
2D Pass 2S Dbl
East's double indicates that he could have made a 2S overcall. The
double 2S implies the inability to bid the suit at the three or
four level, unless East has a two-suiter. With S-AK10873 H-4 D-Q83
C-A84 he should bid 3S over 2S, not double. He would double without
the ace of clubs. With ace-king of clubs, he should bid 4S.
Although opener's partner doesn't know which suit opener has, he
can jump in the lower suit when holding support for both, possibly
as a preemptive move:
South West North East
2D Pass 4H Dbl - business
4NT - takeout, minors
Since North must have both majors, a double is best employed as a
business double, not a takeout double. A 4NT bid is available for
takeout purposes. When the jump is to the three level, a double is
for takeout, showing the minors:
South West North East
2D Pass 3H/3S Dbl - takeout, minors
3NT - natural
Presumably the 3S bid says that North would bid 3S if South has
spades, but 4H if he has hearts.
Such jumps are possible only if Multicolor shows a weak two bid in
a major and no other type hand. Multicolored openings may often be
based on some sort of strong hand as well as a weak one-suited hand
(e.g., a very strong 4-4-4-1 hand, or a very strong notrump hand).
It is fairly safe to assume the opening is of the weak sort, which
it usually is, until opener indicates otherwise. You can always
pass the opening, find out about opener's hand on the next round,
and then act if he is weak.