solution to quiz(1)
n
Q 6 K 8 5 4 2 A 9 3 8 6 4
(a) Two notrump. With its spread-out values and weak suit, this hand is worth no more than a game
invitation. You have shown your heart length, so partner can choose three or four hearts if he wishes;
more important, he can treat his hand as minimum or maximum.
6 4 K 8 5 4 2 A Q 9 6 8 6
(b) Three diamonds. The first decision to be made is whether to drive to game. With sound high-card
structure, honors in long suits, and two possible sources of tricks, you have just enough. The second
decision is whether to insist on hearts opposite a three-card fit. Possession of two weak doubletons
makes this strategy desirable.
Q 7 K 8 5 4 2 A 9 6 3 J 10
(c) Three notrump. It is not mandatory to show your second suit whenever you have 5-4-2-2
distribution. Here, with scattered values, help in the doubletons, and secondary weakness in the four-card
length, you do not mind pretending that you have 5-3-3-2. This will permit partner to use judgment when
holding three-card support for hearts; you will be happy with three notrump if North's hand suggests that
contract.
A Q K 8 5 4 2 A 9 6 3 K 10
(d) Four notrump. Your hand is worth four notrump, so you have the option of bidding it directly or
showing your diamonds first along the way. Since your diamonds are weak and your black suits strong, a
direct four notrump is more likely to lead partner to the winning decision. This does not mean your side
cannot reach six diamonds. Partner may still introduce the suit himself, but will know not to expect four
strong diamonds from you.
A 3 K 8 5 4 2 A Q 9 6 K 10
(e) Three diamonds. You intend to reach the level of four notrump. However, in contrast to (d), this
time you have good diamonds and powerful controls on the side. Slam could belong in diamonds even if
partner has a minimum notrump and four weakish diamonds, as long as the North hand has good
controls or hearts. Thus, a direct three diamonds (you intend to raise three notrump to four) may be
helpful, and won't be misleading.
-- K 8 5 4 2 A Q 9 6 K 10 8 2
(f) Three diamonds. This is not the hand for a splinter jump to three spades (that suggests a one-suiter,
typically 1=6=3=3). The best you can do is show your suits. Since this is not an up-the-line situation
(three diamonds by opener after three clubs by responder is not an attempt to play diamonds), you may
as well bid the stronger suit.
(Adapted from "Rate Your Own Game" in The Bridge World.)
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※ 来源: 中国科大BBS站 [bbs.ustc.edu.cn]