b***y
发帖数: 2804 | 1 IMP有对无，你拿到：AKQ763 / AQ5 / AKT / A
你决定开叫2C，左手方很不合作地叫出5C，PASS到你。你于是叫了5S，同伴加叫到6S，
结束叫牌。整个叫牌过程：
S W N E
2C 5C P P
5S P 6S AP
左手方首攻CK，你们两手牌：
52
K6432
J8754
9
AKQ763
AQ5
AKT
A
两个问题：
1）你同意N-S的叫牌吗？
2）你吃住第一墩（东家跟C2），然后吊将。西家跟出S4，第二轮黑桃上垫了一张梅花
。你准备怎么打这个定约？ | i****e
发帖数: 642 | 2 Although 6S is not the best, but I agree with N-S bids. Even if there is bid
available for north to show spade tolerance, and choices of slam (maybe 5NT
or 6C), it is not clear for south to choose 6D rather than 6H or 6S.
It is hard to bid everything at this level. That is purpose of preempt.
I don't see any sensible play :) The C2 should show singleton or 3 clubs.
Then there won't be meaningful squeeze against east. I will draw 3 rounds of
trump, play two rounds of heart. If hearts don't break, I would cash a D,
and play a trump, planning to finesse D. | i****e
发帖数: 642 | 3 Oh, there seems to be one case we can squeeze east. That is east holds 4531.
That means west will discard on first round of hearts. Then we don't cash
second H and any D, and by squeezing east, we can take care of D Qx from
west. | b***y
发帖数: 2804 | 4 What about 4432 holding?
【在 i****e 的大作中提到】
: Oh, there seems to be one case we can squeeze east. That is east holds 4531.
: That means west will discard on first round of hearts. Then we don't cash
: second H and any D, and by squeezing east, we can take care of D Qx from
: west.
| i****e
发帖数: 642 | 5 I had a blind spot. It seems we don't need to make any decision before
conceding a trump. After winning any return from east, we can check the
heart suit first. If east has 4 or more hearts, we squeeze him on H and D,
taking care of DQx from west. If west holds long hearts (very unlikely
though), we finesse D.
Thought about the bidding again. If north's pass over 5C is encouraging, as
most people play, south should probably bid 6S by himself. In the real
bidding, south seems too conservative, but north's 6S seems a little
aggressive. Is this what you think?
【在 b***y 的大作中提到】
: What about 4432 holding?
| b***y
发帖数: 2804 | 6 Yes, on the play, declarer can afford to draw 3 rounds of trumps and concede
one to East (dummy will of course keep at least 4 hearts). Then win the
return and test hearts. Once East shows 4+ in hearts, it will be a show-up
squeeze if East also holds DQ. Compared with simple finessing, this line
also captures the chance of West being DQx.
If West has 4 hearts, he can hardly have more than 1 diamond, so finessing (
after cashing one diamond top) is almost 100% safe.
As for the bidding, South has a tough decision to make. North's pass should
imply some useful value, but trump may break very badly. As it is, if trump
is 5-0 (not unlikely in light of bidding), 5S is the limit. If our side is
non-vul, maybe X is best. Vul against non-vul, I think it toss-up between 5S
and 6S. North really shouldn't raise, if the agreement is that PASS already
shows value.If North has to bid, he should bid 6H, giving South a choice (
the initial pass from North already denied good hearts, so 6H ought to show
5-card hearts with spade tolerance).
【在 i****e 的大作中提到】
: I had a blind spot. It seems we don't need to make any decision before
: conceding a trump. After winning any return from east, we can check the
: heart suit first. If east has 4 or more hearts, we squeeze him on H and D,
: taking care of DQx from west. If west holds long hearts (very unlikely
: though), we finesse D.
: Thought about the bidding again. If north's pass over 5C is encouraging, as
: most people play, south should probably bid 6S by himself. In the real
: bidding, south seems too conservative, but north's 6S seems a little
: aggressive. Is this what you think?
| b***y
发帖数: 2804 | 7 IMP有对无，你拿到：AKQ763 / AQ5 / AKT / A
你决定开叫2C，左手方很不合作地叫出5C，PASS到你。你于是叫了5S，同伴加叫到6S，
结束叫牌。整个叫牌过程：
S W N E
2C 5C P P
5S P 6S AP
左手方首攻CK，你们两手牌：
52
K6432
J8754
9
AKQ763
AQ5
AKT
A
两个问题：
1）你同意N-S的叫牌吗？
2）你吃住第一墩（东家跟C2），然后吊将。西家跟出S4，第二轮黑桃上垫了一张梅花
。你准备怎么打这个定约？ | i****e
发帖数: 642 | 8 Although 6S is not the best, but I agree with N-S bids. Even if there is bid
available for north to show spade tolerance, and choices of slam (maybe 5NT
or 6C), it is not clear for south to choose 6D rather than 6H or 6S.
It is hard to bid everything at this level. That is purpose of preempt.
I don't see any sensible play :) The C2 should show singleton or 3 clubs.
Then there won't be meaningful squeeze against east. I will draw 3 rounds of
trump, play two rounds of heart. If hearts don't break, I would cash a D,
and play a trump, planning to finesse D. | i****e
发帖数: 642 | 9 Oh, there seems to be one case we can squeeze east. That is east holds 4531.
That means west will discard on first round of hearts. Then we don't cash
second H and any D, and by squeezing east, we can take care of D Qx from
west. | b***y
发帖数: 2804 | 10 What about 4432 holding?
【在 i****e 的大作中提到】
: Oh, there seems to be one case we can squeeze east. That is east holds 4531.
: That means west will discard on first round of hearts. Then we don't cash
: second H and any D, and by squeezing east, we can take care of D Qx from
: west.
| i****e
发帖数: 642 | 11 I had a blind spot. It seems we don't need to make any decision before
conceding a trump. After winning any return from east, we can check the
heart suit first. If east has 4 or more hearts, we squeeze him on H and D,
taking care of DQx from west. If west holds long hearts (very unlikely
though), we finesse D.
Thought about the bidding again. If north's pass over 5C is encouraging, as
most people play, south should probably bid 6S by himself. In the real
bidding, south seems too conservative, but north's 6S seems a little
aggressive. Is this what you think?
【在 b***y 的大作中提到】
: What about 4432 holding?
| b***y
发帖数: 2804 | 12 Yes, on the play, declarer can afford to draw 3 rounds of trumps and concede
one to East (dummy will of course keep at least 4 hearts). Then win the
return and test hearts. Once East shows 4+ in hearts, it will be a show-up
squeeze if East also holds DQ. Compared with simple finessing, this line
also captures the chance of West being DQx.
If West has 4 hearts, he can hardly have more than 1 diamond, so finessing (
after cashing one diamond top) is almost 100% safe.
As for the bidding, South has a tough decision to make. North's pass should
imply some useful value, but trump may break very badly. As it is, if trump
is 5-0 (not unlikely in light of bidding), 5S is the limit. If our side is
non-vul, maybe X is best. Vul against non-vul, I think it toss-up between 5S
and 6S. North really shouldn't raise, if the agreement is that PASS already
shows value.If North has to bid, he should bid 6H, giving South a choice (
the initial pass from North already denied good hearts, so 6H ought to show
5-card hearts with spade tolerance).
【在 i****e 的大作中提到】
: I had a blind spot. It seems we don't need to make any decision before
: conceding a trump. After winning any return from east, we can check the
: heart suit first. If east has 4 or more hearts, we squeeze him on H and D,
: taking care of DQx from west. If west holds long hearts (very unlikely
: though), we finesse D.
: Thought about the bidding again. If north's pass over 5C is encouraging, as
: most people play, south should probably bid 6S by himself. In the real
: bidding, south seems too conservative, but north's 6S seems a little
: aggressive. Is this what you think?
| u********e
发帖数: 4950 | 13 同伴应该pass 5s
【在 b***y 的大作中提到】
: IMP有对无，你拿到：AKQ763 / AQ5 / AKT / A
: 你决定开叫2C，左手方很不合作地叫出5C，PASS到你。你于是叫了5S，同伴加叫到6S，
: 结束叫牌。整个叫牌过程：
: S W N E
: 2C 5C P P
: 5S P 6S AP
: 左手方首攻CK，你们两手牌：
: 52
: K6432
: J8754
| u********e
发帖数: 4950 | 14 打法:
先看能不能扎下方块J,
如果没下,挤东家同时防守红桃和方块
【在 b***y 的大作中提到】
: IMP有对无，你拿到：AKQ763 / AQ5 / AKT / A
: 你决定开叫2C，左手方很不合作地叫出5C，PASS到你。你于是叫了5S，同伴加叫到6S，
: 结束叫牌。整个叫牌过程：
: S W N E
: 2C 5C P P
: 5S P 6S AP
: 左手方首攻CK，你们两手牌：
: 52
: K6432
: J8754
|
|
