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Jacoby 2NT  雅可贝2NT应叫 Jacoby Transfer

(2010-10-20 09:38:11)
标签:

雅可贝2nt应叫

jacoby

2nt

桥牌

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叫牌技术

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分类: 桥牌

第四节  雅可贝2NT应叫

Jacoby 2NT

                    出自《伯根实用叫牌百科全书》 [美]马迪·伯根 著

    一个好的满贯叫牌过程必须由多层次叫牌组成,而大牌点计数只在其中扮演了相对次要的角色。因此,对普通水平的牌手来说,满贯叫脾十分辣手,这就不足为奇了。

    对好的满贯叫牌的要求,最重要的一点是及早确立将牌花色,在桥牌比赛中,最值得骄做的叫牌是加叫同伴的花色,以表示将牌的极好配合,一旦有了这样的开头,扣叫和对满贯的探索就随之而来了。

    满贯叫牌的另一个特别重要的组成部分是牌型分配信息。至少,一位牌手应该获得其同伴的牌型分配信息,这几乎总是必要的。他起码应该知道,同伴的短套所在,并估计出配合所在,并希望把自己手上大部分大牌定位于同伴的长套上(而不是浪费在同伴的单缺花色上)。

    这两点需求,通过爆裂叫性性可以很好地得到满足。牌手使用爆裂叫;就可以既表示出对同伴花色的支持,同时又表示出单张(或缺门)所在。

    与此目标相近的叫牌是雅可贝2NT应叫,它是对开叫高花的一种约定性应叫,可以提高满贯叫牌的精确性。它至低限度是表示对开叫方的将牌花色的一种逼叫性加叫,持有4张或更多的将牌花色套。这种叫牌的经济固素是显而易见的。尽管同伴和你都只作出了一次叫牌,同伴间就已经清楚了、确定了将牌花色,并将至少逼叫成局,而且还留有大量叫牌空间以供同伴间作出进一步探索。

    采用雅可贝2NT应叫要作出些什么牺牲呢?这是任何一种约定叫都将要面临的重大考验。通常情况下,情况下1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer
-2NT叫牌过程的2NT应叫,示持13-15个大牌点的平均型牌,在未叫过花色中有止张。这也是一种很好的叫牌。但是,你完全可以不必采用这种叫牌,而用你手上最好的花色盖叫1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,然后再跳叫3NT,同样可以达到这个目的(或者,先用逼叫性1NT应叫,下一轮再用2NT进局逼叫)。

    好,再回到雅可贝2NT应叫上。只要应叫方在同伴花色上具有示强加叫的牌力,他都可以作这种叫牌。在同伴1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer
开叫之后,应叫方持下面各手牌时,都应当应叫2NT:

(1) Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer A8 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKQ74 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA953 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA74

(2) Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAQ84 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferQ103 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferJ8754

(3) Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA765 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAJ64 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK43 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferQ4

(4) Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA85 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferJ1063 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA94 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA107

   注意,2NT通常是持平均型牌。如果应叫方有单张,通常他将直接选择爆裂叫来显示它。一个例外是上面的第(2)例,因为Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张为A,不能以持完美的单张去作爆裂叫。

   第(1)例显示的应叫方的强度已超越限制性加叫范围。因为,开叫方肯定将要进一步描述他的牌情,应叫方可以作出2NT叫牌,然后静观事态发展,不必太拘泥于点力计算。

   开叫方作出再叫,首先应该是显示单张或缺门:3阶水平再叫示单张;4阶水平示缺门。

   因此,在1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer-2NT叫牌之后,开叫方再叫:

   3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张

   3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张

   3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张

   4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer缺门

   4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer缺门

   4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer缺门

    除去单张或缺门情况,开叫方又该怎么再叫呢?他采用剩下的三种叫牌中任一种,以区分他这手牌的相对强度。剩下的三种叫牌分别是:3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,3NT和4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer。3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer是最鼓舞人心的鼓励性叫牌;4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer完全是非鼓励性叫牌;而3NT则是介乎于这两个极端之间。对应以下各种类型,都是在1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer-2NT叫牌之后,开叫方应该作出的不同再叫。

(1)再叫4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKJ653 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA106 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK5 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferJ74

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferJ7654 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAK7 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferQ106 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK5

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer108743 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAK63 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA5 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer64

(2)再叫3NT:

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKJ8763 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK7 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA5 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferJ63

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAQ874 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA6 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKJ42 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer94

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA10863 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAQJ Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKJ4 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer85

(3)以下这一手牌都是足以使人感到欢欣鼓舞的,再叫鼓励性3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,表现出对满贯的浓厚兴趣:

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAKJ74 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA1065 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK4 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer92

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAQJ843 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA106 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer94 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK5

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKQ874 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKQ6 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA84 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK5

    按点力计算(包括牌型点)大致如下:4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,13-15点;3NT,15-17点;3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,18点及18点以上。

    注意,开叫方遵循的原则是:持好牌时低叫,持弱牌时则速达(终止在成局定约上)。速达原则(Fast Arrival)同样适用于应叫方。例如,应叫方持:Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferQ843 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferKQJ7 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA8 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer1064

在叫牌过程:

1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

2NT

3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

之后,应叫方应该跳叫至4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,示一手若进到满贯定约相对来说可能显得较弱的牌。当然,由于开叫方已显示了Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张,满贯仍然是准确的。

    因为有如此之多的叫牌空间,雅可贝2NT应叫将很好地把自身引导入扣叫。扣叫总是显示对满贯的兴趣,并示控制(所叫花色的A或K),尤其强调第一轮控制。通常你遵循最便宜叫牌原则作出扣叫,以有效地利用叫牌空间。不要太匆忙地使用黑木问叫,或跳叫至满贯,要充分利用充裕的叫牌空间这一有利条件。

    让我们实践一下雅可贝2NT应叫的叫牌过程。同伴开叫1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,你持这手牌:

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer92 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferK1085 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA874 Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferAK7

应叫2NT。在下面开叫方的不同再叫情况下,请选择你的叫牌,并说明其理由。

(1)

开叫方

 

4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

?

Pass。开叫方已声明他是持低限,因此,即使你持这手好牌,也只得顺水推舟再叫pass。

(2)

开叫方

 

3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

?

3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer。漂亮极了,这正好是你所期待的。同伴持单张Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer很可能Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer既长又有控制,看来冲上满贯极有可能。3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer是标志叫牌,因为它比4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer叫牌更经济,并允许同伴作出3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer扣叫。3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer是鼓励性叫牌,是与4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer完全不相同的叫牌。

(3)

开叫方

 

 

4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

?

 

4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer。对你这手牌来说,同伴的Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer缺门不怎么理想。但是你的Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>TransferA-K依然有用。

(4)

开叫方

 

3Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

?

4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer。同伴的Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer单张很不错,因为,它不再重复计算进点力之中。不过,如果你手上拿再多一点,而低花套再少一点的话就更好了。但是,假如同伴Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer套也是长套的话,情况就可能不太妙了,在Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer花色上就可能必然有失墩。

(5)

开叫方

 

3NT

?

4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer。现在满贯已相当值得怀疑,但我们还是值得一试。如果同伴再叫出4Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer,你只有pass。

    有些牌手喜欢采用开叫方跳叫至4阶水平,表示有另一个5张套,而不愿用它示缺门。毋宁说这一变通叫牌更见长处,也是今天多数专家乐于采用的。

    雅可贝2NT应叫被认为是最有价值的满贯叫牌手段,为数众多的有经验的牌手都喜欢使用它。就是对不那么老练的一对牌手来说,一旦掌握它也会立见其效的。

    问题

    1.如果我们采用雅可贝2NT应叫方式,我们可以用它作为对敌方花色争叫后的盖叫吗?

    [解答]

    在叫牌过程:

同伴

右手敌家

1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer

之后,我猜想此时你叫出的2NT是雅可贝2NT应叫,运用否定性加倍,或2阶低花甚至3NT应叫,都是说明你想打无将定约的自然叫牌。然而在下面这个叫牌之后:

同伴

右手敌方

1Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer


2Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer(或同阶次叫牌)

2NT就是示持11点牌力的平均型牌,此后开叫方不得不退缩下来。这个教训说明:雅可贝2NT应叫仅在非竞争性叫牌中才会被采用。不过,在同伴开叫1NT后被敌方盖叫或加倍时,2NT亦被推荐为雅可贝转移叫(Jacoby Transfer)。

     2.我能够在持有3张将牌时运用雅可贝2NT吗?

    [解答]

    不能!!为了可能的满贯叫牌,将牌的张数往往具有决定性的意义。

 

感觉这是个包容性很强的约定叫,不喜欢吃药的我也对它情有独钟,举两个这两天的实战牌例说明一下:

Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer
上例16P的S对17P的1nt,我叫3nt,PD事后说该应叫更带鼓励性质3s,结果是6S-1(首功H a 续H将吃),6NT MK,进帐17P!
Jacoby <wbr>2NT <wbr> <wbr>雅可贝2NT应叫 <wbr>Jacoby <wbr>Transfer
此例20法则轻开,3S是一不做二不休的叫品,志在必得!扎下双张将牌Q,7H已安全回家,闭室4H+3,6H已经赚了,PD追分到7H,啊啊,致胜之道!

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