Ｂｒｉｄｇｅ Ｗｏｒｌｄ Ｓｔａｎｄａｒｄ Ｄｅｆｅｎｓｅ
---------------------------------------------------------------------------
(I) Opening leads
(A) Against suit contracts
(1) Honor leads
* king from ace-king; otherwise, top from a sequence; highest equal
from an interior sequence
(2) Spot-card leads
* third highest from even length; lowest from odd length
(3) Alarm-clock leads (to suggest an unusual situation, such as a ruff
possibility)
* fourth highest from five or six cards; fifth highest from seven
cards
(B) Against notrump contracts
(1) Honor leads
* ace requests unblock or count signal; queen requests jack; highest
equal from non-ace sequences and interior sequences
(2) Spot-card leads
* fourth highest leads; second highest from weak suits
---------------------------------------------------------------------------
(II) Later leads
(A) Against suit contracts
(1) Honor leads
* king from ace-king; otherwise, highest equal from sequences and
interior sequences
(2) Spot-card leads in opening leader's suit
* high from remaining doubleton; low from remaining tripleton
(3) Spot-card leads in a new suit
* third highest from even length; lowest from odd length
(B) Against notrump contracts
(1) Honor leads
* highest equal from sequences and interior sequences
(2) Spot-card leads in opening leader's suit
* original fourth highest
(3) Spot-card leads in a new suit
* attitude
---------------------------------------------------------------------------
(III) Signaling techniques (how to send messages)
(A) Attitude signals
* low discourages; high encourages
(B) Count signals
* high even; low odd
Exception: in the trump suit, upside-down count
(C) What a count signal shows
* present count
(D) Suit-preference signals
* high prefers higher suit; low prefers lower suit
---------------------------------------------------------------------------
(IV) Signal meanings (when to send which messages)
(A) When following to partner's lead
* attitude
(B) When following to declarer's or dummy's lead
* count
(C) When playing trumps
* count
(D) When discarding
In general
* from sequences and interior sequences with significant trick-
taking ability, highest equal
First discard in a particular suit
* attitude
Second discard in a particular suit
* count
Discard relating to a different suit
* suit-preference
(E) When splitting honors as second hand
* king from ace-king; otherwise highest equal
(F) Throughout the defense
(1) Special situations where count takes precedence
* at trick one against a suit slam, after a king-lead
(2) In general
* unusual play shows unusual holding or requests unusual play
--
※ 發信站: 批踢踢實業坊(ptt.twbbs.org)
◆ From: ms10.hinet.net
> -------------------------------------------------------------------------- <
作者: jmc (貪玩的小孩) 看板: BridgeClub
標題: 關於 BWSD
時間: Thu Feb 25 04:22:50 1999
BWSD 刊登於二月號的 Bridge World 雜誌上。主筆人是 "Partnership Defense" 和
"Modern Defensive Signalling in Contract Bridge " 兩本防禦名書的作者 Kit
Woolsey。由 Kit Woolsey 來撰寫這個重要的專題, 實在是再恰當不過了。
BWS (Bridge World Standard) 是由美國的專家群票選出來的叫牌制度, 因此 BWS
代表著美國橋藝專家們達成大多數共識的 "自然制"。
BWSD (Bridge World Standard Defense) 的形成方式類似, 它綜合了美國專家群的
見解。BWSD 的每一項約定, 表示在某個特定的情形下, 大多數的美國橋藝專家們是
這樣約定防禦信號的。
所以該篇文章有相當高的參考價值。
我只做了點苦工把 BWSD 內容貼上來。文章裡還有不少分析和注解, 以後會陸續提到。
--
※ 發信站: 批踢踢實業坊(ptt.twbbs.org)
◆ From: ms10.hinet.net