c****u
发帖数: 3277 | 1 this is a problem in Kit Woolsey's partnership defence.
North
S:AQ105
H:9864
D:5
C:KQ103
West
S:84
H:3
D:AQJ10842
C:954
双方无局，东开叫
North East South West
Pass 1S 3D
4S Pass Pass Pass
你首攻单张红心，同伴用A赢进，庄家出5。同伴回出H2，庄家出J，你将吃。然后呢？
答案：
兑现方块A。看起来同伴如果有CA的话，你还有两个赢墩。但应先兑现A，同伴可能是在警告
你不要从方块A下低引，这是你在信号不清的情况下很可能会做的。也许第4墩牌来自将牌。
整手牌如下：
North
S:AQ105
H:9864
D:5
C:KQ103
West East
Sou | c****u
发帖数: 3277 | 2 one example:
suppose partner leads 2 and you are sure it's a singleton,
you hold:
A7643
you should give 7 for lower suit.
6 for higher suit.
3 if you have no preference.
【在 c****u 的大作中提到】
: this is a problem in Kit Woolsey's partnership defence.
: North
: S:AQ105
: H:9864
: D:5
: C:KQ103
: West
: S:84
: H:3
: D:AQJ10842
| w****b
发帖数: 623 | 3 I think Woolsey's point is that sometimes within the framework, a lie could be
the best thing that could avoid a misunderstanding.
From East's point of view, it's not completely clear that West knows East
started with AT72 -- it could be A72. So there is a chance that West may err
in desperation. So this lie can hardly cost, provided West thinks.
I remember that there was another (famous) case where the vague (middle card)
is essential as only a trump switch defeats the contract, else declarer c
【在 c****u 的大作中提到】
: this is a problem in Kit Woolsey's partnership defence.
: North
: S:AQ105
: H:9864
: D:5
: C:KQ103
: West
: S:84
: H:3
: D:AQJ10842
| c****u
发帖数: 3277 | 4 ACBL doesn't allow odd/even signal on every trick...
【在 w****b 的大作中提到】
: I think Woolsey's point is that sometimes within the framework, a lie could be
: the best thing that could avoid a misunderstanding.
: From East's point of view, it's not completely clear that West knows East
: started with AT72 -- it could be A72. So there is a chance that West may err
: in desperation. So this lie can hardly cost, provided West thinks.
: I remember that there was another (famous) case where the vague (middle card)
: is essential as only a trump switch defeats the contract, else declarer c
| c****u
发帖数: 3277 | 5 you may also re-define traditional suit preference as following:
a low card means I don't like higher suit,
a high card means I don't like lower suit.
However, it may also bring some problems. In my opinion,
a true signal is often the best if you have a good partner,
because a "risk-free" signal can sometimes mislead your partner....
Last weekend, Joanna Stansby made a seemingly risk-free signal which
cost about 19 IMPs at bbo.
she led singlton club to Irina's ace against my partner's 5D x,
Irin
【在 w****b 的大作中提到】
: I think Woolsey's point is that sometimes within the framework, a lie could be
: the best thing that could avoid a misunderstanding.
: From East's point of view, it's not completely clear that West knows East
: started with AT72 -- it could be A72. So there is a chance that West may err
: in desperation. So this lie can hardly cost, provided West thinks.
: I remember that there was another (famous) case where the vague (middle card)
: is essential as only a trump switch defeats the contract, else declarer c
| w****b
发帖数: 623 | 6 Really?? I never realized that... after thinking about it, I felt that the
ACBL general chart should even ban signals like smith echo and its
permutation, as it could offer unfair advantage to those who did not know
them...
But still I think the best signal is the one you are most familiar with it.
Both Peter and Weishu play standard signal which I felt a bit inferior to
upside down, but we hardly had any misunderstandings in that area.
Maybe we can try your new method some time...
could be
err
【在 c****u 的大作中提到】
: ACBL doesn't allow odd/even signal on every trick...
| c****u
发帖数: 3277 | 7 I am not very sure whether my new method is allowed.
another issue, when a defender holds more than 4 cards in the suit,
my new method is good. However if he holds less than 4 cards, traditional
method is still the best. That means if we have bid the suit and partner
leads an obvious singleton, my new method works well. Otherwise, it's still
good to play standard suit preference.
【在 w****b 的大作中提到】
: Really?? I never realized that... after thinking about it, I felt that the
: ACBL general chart should even ban signals like smith echo and its
: permutation, as it could offer unfair advantage to those who did not know
: them...
: But still I think the best signal is the one you are most familiar with it.
: Both Peter and Weishu play standard signal which I felt a bit inferior to
: upside down, but we hardly had any misunderstandings in that area.
: Maybe we can try your new method some time...
:
: could be
| c****u
发帖数: 3277 | 8 Another thing I don't really like is that Kit Woolsey played too many suit
preference in his book. I believe suit preference should be played only
in most obvious cases. Attitude is still the first priority.
I found another mistake in his example:
North
S:73
H:QJ1075
D:8654
C:AQ
East
S:92
H:A9643
D:AK103
C:K3
双方有局
North East South West
1S
【在 c****u 的大作中提到】
: I am not very sure whether my new method is allowed.
: another issue, when a defender holds more than 4 cards in the suit,
: my new method is good. However if he holds less than 4 cards, traditional
: method is still the best. That means if we have bid the suit and partner
: leads an obvious singleton, my new method works well. Otherwise, it's still
: good to play standard suit preference.
| f*****x
发帖数: 545 | 9 this makes pd easier to judge, but problem comes when pd have only odd or even
cards. declarer can do same by hidding his even or odd card. isnot it?
The suit preference is not an excuse for west in the hand you gave, because
giving pd lead h2, you should cash da always, as there is no point to guard
declarer's dk, he cannt use it for discard obviously and dummy has enough
trump to ruff d if necessary. so cashing da is always the 1st play.【 在
cozofu (但为君故) 的大作中提到: 】
？
在警告
将牌。
去方块 | f*****x
发帖数: 545 | 10 why not drop dj then? wouldnot it be more clear?【 在 cozofu (但为君故) 的大作
中提到: 】
出Q，
你有C
以建 | w****b
发帖数: 623 | 11 Again the danger of playing count is you may not be able to always distinguish
doubleton or 4-piece. West could have 2-2-2-7, or 3-2-2-7, declarer false card
from QJx -- it's not likely but possible -- and he chose the wrong doubleton
to lead from. Notice in this example, there isn't a problem of cashing out in
D since even if East starts with 3, you still don't defeat it if West cannot
ruff.
Also notice that after South showed DQ, the matter simplified greatly, since
otherwise West has to give
【在 c****u 的大作中提到】
: Another thing I don't really like is that Kit Woolsey played too many suit
: preference in his book. I believe suit preference should be played only
: in most obvious cases. Attitude is still the first priority.
: I found another mistake in his example:
: North
: S:73
: H:QJ1075
: D:8654
: C:AQ
: East
| c****u
发帖数: 3277 | 12 Without DQ, west should play attitude. but when DQ appears, west should
just give counting signal I believe. The reason is that declarer may have
something like this: SAKQTxxx HK DQx CKxx, partner may need to know
how many heart trick he can cash before giving his partner a potential
trump promotion.
if declarer had one diamond, pd should switch H right away and
hope you had SKTx, if he had 2, pd can cash two diamonds and play H
to play you for SJxx.
【在 w****b 的大作中提到】
: Again the danger of playing count is you may not be able to always distinguish
: doubleton or 4-piece. West could have 2-2-2-7, or 3-2-2-7, declarer false card
: from QJx -- it's not likely but possible -- and he chose the wrong doubleton
: to lead from. Notice in this example, there isn't a problem of cashing out in
: D since even if East starts with 3, you still don't defeat it if West cannot
: ruff.
: Also notice that after South showed DQ, the matter simplified greatly, since
: otherwise West has to give
| w****b
发帖数: 623 | 13 The issue is not to differentiate AKQTxxx K Qx Kxx from AKQTxxx Kx Q Kxx, as
in the later case you can't quite defeat the contract anyway. I'm convinced
that playing either clear count or attitude is somewhat flawed and cannot
cater to all cases.
I think we should look at this problem from a different angle. After winning
the HA, east can play DK for attitude and A for count. In this case, since
East has CK, he's not looking for promotion somewhere and he only needs to
know the attitude: if west
【在 c****u 的大作中提到】
: Without DQ, west should play attitude. but when DQ appears, west should
: just give counting signal I believe. The reason is that declarer may have
: something like this: SAKQTxxx HK DQx CKxx, partner may need to know
: how many heart trick he can cash before giving his partner a potential
: trump promotion.
: if declarer had one diamond, pd should switch H right away and
: hope you had SKTx, if he had 2, pd can cash two diamonds and play H
: to play you for SJxx.
| c****u
发帖数: 3277 | 14 but sometimes he might like to get attitude from partner
when he has just HA and DA....
I think attitude is always the first priority unless Q has shown
here when a defender leads K, especially for high level.
Perhaps it's right to lead A for attitude, K for count against 4 level
or above contracts.
【在 w****b 的大作中提到】
: The issue is not to differentiate AKQTxxx K Qx Kxx from AKQTxxx Kx Q Kxx, as
: in the later case you can't quite defeat the contract anyway. I'm convinced
: that playing either clear count or attitude is somewhat flawed and cannot
: cater to all cases.
: I think we should look at this problem from a different angle. After winning
: the HA, east can play DK for attitude and A for count. In this case, since
: East has CK, he's not looking for promotion somewhere and he only needs to
: know the attitude: if west
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