桥牌中的自然叫牌法有哪些规则?

2025-01-28 08:08:41
推荐回答(1个)
回答(1):

自然叫牌法是各种叫牌体制中普遍的、合乎逻辑的叫牌方法,也是绝大多数桥牌手们所遵循的一种叫牌法则。根据自然叫牌法,可以得到如下一般的开叫规则:

大牌13点或以上,是开叫的基本条件。如果你手上的牌具有开叫的价值,就要根据牌型情况,确定怎样叫牌。开叫可以分为两类;开叫无将和开叫花色。下面是各种开叫条件,以便参考。

无将开叫:

一无将平均牌型,16-18大牌点

二无将平均牌型,22-24大牌点

三无将平均牌型,25-27大牌点

花色开叫;

一花色13-21大牌点,牌型不定

二,三花色由赢张决定的阻击叫

四花色由赢张和战略决定

下面提供的几条规则,使你确定开叫的最低限度值以及怎样的牌应当不叫。

任何持有大牌14点的一手牌必须开叫;

持有大牌12或13点的一手牌,只有当你至少有两个大牌赢张以及一个可再叫花色才可以开叫;

持有大牌10或11点,不仅有两个大牌赢张和可再叫花色,而且有好的高级花色长套,应当开叫;

在两家不叫之后,轮到第三家,持有大牌10或11点,连通常应有的两个大牌赢张和高级花色长套也没有,只要能为同伴作出好的首攻,就可以开叫;

当持有的牌达不到上述起码开叫要求时就当不叫。

假定由北家为发牌者,此牌双方无局,发完牌后各家持有的牌如下:

黑桃J93

红心KQJ75

方块KQ4

梅花K3

西东

黑桃K106黑桃AQ852

红心643红心98

方块J653方块A97

梅花1092梅花J75

黑桃74

红心A102

方块1082

梅花AQ864

北家为发牌者,应首先开叫。北持有大牌15点,具有开叫的实力,根据牌型和套子的情况,考虑到红心花色的套子较长,可首先开叫1红心。东持有大牌11点和一个5张黑桃长套,故争叫1黑桃(以花色级别盖过红心)。南持有大牌10点,且梅花上有长套,逼叫一轮2梅花。以数字盖过1黑桃,西只有大牌4点,牌力不足,因此不叫。北再叫2红心(以花色级别盖过梅花),红心是再叫套,即表示红心至少是带有二张大牌的5张长套。东此时考虑牌型不宜再继续争叫,故也不叫。南认为己方牌型可继续再叫,所以一跃叫副4红心进局,以数字盖过同一花色。东西两家,由于牌力不足以参与继续争叫,故保持沉默。经过三个连续的“不叫”,南家的4红心成为最后定约。

叫牌过程:北东南西

1红心1黑桃2梅花-

2红心-4红心-

--

“-”表示“不叫”。最先命名这一花色的是定约执行者,因此北是定约者。根据规则,任何数字的定约,加上6墩基数,是完成定约要拿到的墩牌数。即北要拿到10墩牌,才算完成定约,少于10墩就是宕墩。

北是定约的执行者,北的同伴南是明手。定约者左首一家(东)首先出第一张牌(叫首攻),待首攻第一张牌后,明手把自己的13张牌明摊在桌面上,让定约者北一个人执行明暗两手的打牌计划,明手在这一副牌的打牌过程中,自始至终,只能听从定约者的命令抽取牌张跟打。四家各打一张,成为一墩,每一家各自把刚才跟打出的牌翻暗,一横或一直地放在自己面前,作为计算赢墩的标志,横的属于敌方,直的属于己方。前一墩的胜方为下一墩的出牌方,经过13墩打完牌以后,根据双方所得的墩数,检查定约完成情况。如果该牌定约方(北、南)拿到了10墩牌,则刚好完成定约,根据计分规则,红心每墩30分,共得基本分4×30=120分已经成局,加无局方完成成局定约奖分300分,北南方共得420分。

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