c****u
发帖数: 3277 | 1 动态防御
-Mike Lawrence
1(a)
SA83
HJ92
DJ96
CJ732
双无局况, 西开叫1NT, 东加到2NT, 西继续叫到3NT. 我查了他们的NT
开叫范围是15-17.
西开叫
双无
西 北 东 南
1NT p 2NT p
3NT p p p
同伴攻黑心K, 明手如下:
S T74
H QT54
D AQT
C T86
S A83
H J92
D J96
C J732
看来我们找到了不错的开始, 我打8表示鼓励,搭档续攻Q, 我必须决定
是不是超吃过来,打搭档有KQJx(x), 还是让过去, 打KQx,
我能判断怎么打才对吗?
可以. 事实上有专门的约定来解决这类问题:
当你从大牌连接张功牌并取到的时候, 你的下一张应该是所剩的大牌
里面最小的一张. 比如KQJxx, 你攻K, 续打J, KQx, 你攻K, 续打Q.
于是我就知道搭档是从KQx里面攻出来的. 所以我打3. 搭档不知道我黑
心的张数. 所以他 | w**n
发帖数: 244 | 2 偶会回出 Dia
【在 c****u 的大作中提到】
: 动态防御
: -Mike Lawrence
: 1(a)
: SA83
: HJ92
: DJ96
: CJ732
: 双无局况, 西开叫1NT, 东加到2NT, 西继续叫到3NT. 我查了他们的NT
: 开叫范围是15-17.
: 西开叫
| x***e
发帖数: 2449 | 3
Seems C is the only choice.
But which?
I will choose small.
All others will miss the point.
The only chance is pd have HK and CQ.
【在 w**n 的大作中提到】
: 偶会回出 Dia
| a***n
发帖数: 287 | 4
Then the declarer has only 15HCP, which is the lower
limit of the lNT opening. Under this circumstance,
he/she should have some strong reasons to accept
the 2NT invitation with the lower-limit HCPs. Those
reasons include but may not be limited to a 5-card
Diamond suit. But even if he/she does have a 5-card
Diamond suit, the bidding is still somewhat weird because
of the 5-4-2-2 pattern. So, I will bet on that the
declarer has enough HCPs, i.e., at least 16HCPs, but
also has some weakness in the
【在 x***e 的大作中提到】
:
: Seems C is the only choice.
: But which?
: I will choose small.
: All others will miss the point.
: The only chance is pd have HK and CQ.
| a***n
发帖数: 287 | 5
A updated version of what I thought.
1. South has 15-17 HCPs, according to their bidding
convention. Dummy has 8 HCPs. East has 7 HCPs,
so west has 8-10 HCPs. He has showed 5 HCPs (SK
and SQ), so he has 3-5 HCPs undetermined.
2. The unseen honor cards are HA, HK, DK, CA, CK, CQ.
For west to have 3 HCPs, only possibilities are
one K. Similarly, for him to have 4 HCPs, the only
possibilities are one A (because there is only one
Q unseen), and the only possibilities for
【在 a***n 的大作中提到】
:
: Then the declarer has only 15HCP, which is the lower
: limit of the lNT opening. Under this circumstance,
: he/she should have some strong reasons to accept
: the 2NT invitation with the lower-limit HCPs. Those
: reasons include but may not be limited to a 5-card
: Diamond suit. But even if he/she does have a 5-card
: Diamond suit, the bidding is still somewhat weird because
: of the 5-4-2-2 pattern. So, I will bet on that the
: declarer has enough HCPs, i.e., at least 16HCPs, but
| w**n
发帖数: 244 | 6
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Give us a reason ba.
【在 x***e 的大作中提到】
:
: Seems C is the only choice.
: But which?
: I will choose small.
: All others will miss the point.
: The only chance is pd have HK and CQ.
| w**n
发帖数: 244 | 7 Actually, no matter what partner holds (even with Dia K),
we lose nothing when returning Dia.
It's a kind of passive defense play.
【在 a***n 的大作中提到】
:
: A updated version of what I thought.
: 1. South has 15-17 HCPs, according to their bidding
: convention. Dummy has 8 HCPs. East has 7 HCPs,
: so west has 8-10 HCPs. He has showed 5 HCPs (SK
: and SQ), so he has 3-5 HCPs undetermined.
: 2. The unseen honor cards are HA, HK, DK, CA, CK, CQ.
: For west to have 3 HCPs, only possibilities are
: one K. Similarly, for him to have 4 HCPs, the only
: possibilities are one A (because there is only one
| w**n
发帖数: 244 | 8 Dia 9, not Dia 6.
【在 w**n 的大作中提到】
: 偶会回出 Dia
|
| a*******s
发帖数: 295 | 9 I believe xiaolong is right.:)
I do think we need a passive defence. however, diamond is not as safe
as it looks like. club is better.
you expect pd have HA or HK&CQ, DK is useless here, since that means
declarer had HAK, she had no choice but make it home. 1s+4H+2D+2C.
so ok, if declarer had D Kxxx, what is her next move. I geuss she won't
cash DAKQ first,instead, she will play a heart to K, and your pd will
grab the ace and return a heart, push her into a early decision.
HJ on side or diamond | w**n
发帖数: 244 | 10
S: JXXX
H: KX
D: KXXX
C: AKQ
I don't think she will play heart in the sixth round since it will put
her in a very bad situation no matter she lost or win. What can she gain
by leading to heart King?
No she won't, but she may finesse club in the third round. :-)
【在 a*******s 的大作中提到】
: I believe xiaolong is right.:)
: I do think we need a passive defence. however, diamond is not as safe
: as it looks like. club is better.
: you expect pd have HA or HK&CQ, DK is useless here, since that means
: declarer had HAK, she had no choice but make it home. 1s+4H+2D+2C.
: so ok, if declarer had D Kxxx, what is her next move. I geuss she won't
: cash DAKQ first,instead, she will play a heart to K, and your pd will
: grab the ace and return a heart, push her into a early decision.
: HJ on side or diamond
|
|
