xhq Posted May 17, 2013 Report Share Posted May 17, 2013 假如拿到下面这手牌，盟友开叫1♥，接着敌争叫7♠，你pass，敌盟友pass,盟友加倍你如何首攻？[hv=pc=n&w=s65ht42dkjt32c862&d=e&v=0&b=14&a=1h7sppdppp]133|200[/hv] Quote Link to comment Share on other sites More sharing options...
madongjun Posted May 17, 2013 Report Share Posted May 17, 2013 按照满贯加倍是莱特纳加倍考虑：首攻的优先序为：1、如果明手叫过旁套，应该攻这门，如果他叫过不只一个花色，应该攻他最先叫的花色。2、如果明手没有叫过旁套，而庄家叫过，就应该攻该花色。3、如果敌方都没有叫过旁套，就应该攻一个未叫花色，通常攻未叫花色中的最长套是合适的，因为加倍人通常是有一个缺门希望可以第一轮将吃的。 所以，我选择方块首攻。 Quote Link to comment Share on other sites More sharing options...
lycier Posted May 17, 2013 Report Share Posted May 17, 2013 这是一道值得顶置的好题目，值得学习，请帖主为大家讲解，我将洗耳恭听。谢谢。 Quote Link to comment Share on other sites More sharing options...
xhq Posted May 17, 2013 Author Report Share Posted May 17, 2013 谢谢老师抬爱。按常规同伴加倍对方的满贯定约是不希望他首攻他叫过的花色，也就说不要首攻红心。而要攻明手最早叫出的花色，但是明手根本没有叫过牌。显然也不宜首攻将牌，既然pd做惩罚性加倍，他定是畸形牌，一定有一个缺门花色，如果能首攻该花色他可立马将吃取得一个赢墩。那么pd他是持♦缺门呢？还是持♣缺门呢？在激烈的比赛中这的确是个很难判断的问题。这牌首攻人手中持5张♦长套，因此pd手中的♦不会长，是缺门的概率比较大。似乎应该首攻♦，果真如此吗？仔细再思量一下南家凭啥一口气独家叫7♠？肯定持有第二个坚强套。西家在♦中持有KJ大牌，南家不会持有不坚强的♦套，因此，南家持有坚强的♠套和♣套更加符合逻辑。所以西家应该果断地首攻♣！下面是四家牌的全貌：[hv=pc=n&s=sakqj74hdacakqt73&w=s65ht42dkjt32c862&n=s93h876d9865cj954&e=st82hakqj953dq74c&d=n&v=0&b=1&a=p1h7sppdppp]399|300[/hv]这副牌我们的主题是讨论首攻，假如这副牌讨论叫牌的话我主张不采用扣叫（顶底）方式争叫，而是先争叫1♠，然后再叫7♣（应该是合理定约）。这样的牌例我在五一期间参加一个联赛时就碰到过（我已请教过心烛老师），是我的盟友拿到了想这样的牌型，他就采用扣叫方式参与争叫的，可惜叫到了5阶水平，实际是7的牌。 Quote Link to comment Share on other sites More sharing options...
madongjun Posted May 18, 2013 Report Share Posted May 18, 2013 分析的不错。不过这样的加倍确实需要高度的自信。总觉得说服力还是不太强。 如果没有这个满贯加倍，那么首攻的选择就反用莱特纳的判断条件－－那样的话，也许攻草花才符合逻辑。 楼主允许的话，我想把它放到BBO“有趣的一手牌”分坛，看看外国朋友是怎么分析的。 Quote Link to comment Share on other sites More sharing options...
zyp163 Posted May 18, 2013 Report Share Posted May 18, 2013 经典！攻C Quote Link to comment Share on other sites More sharing options...
1300446026 Posted May 18, 2013 Report Share Posted May 18, 2013 首先是基于如果首攻错了，7S就MK了。如果同伴是缺门示攻加倍，显然只有C缺门时才必须攻C，如果是D缺门，攻不攻都是无所谓的，因为敌人的D是有失墩的，不需要将吃。所以必须是C缺门示攻才是必须的。 Quote Link to comment Share on other sites More sharing options...
xhq Posted May 19, 2013 Author Report Share Posted May 19, 2013 madongjun牌友可以。 Quote Link to comment Share on other sites More sharing options...
00master Posted May 19, 2013 Report Share Posted May 19, 2013 这真是一道思考题~根据牌情具体分析而不是照搬理论~ Quote Link to comment Share on other sites More sharing options...
sungh Posted May 20, 2013 Report Share Posted May 20, 2013 南家考虑叫7C。保留改叫7S的机会。东西就没有防宕大满贯的机会了。 Quote Link to comment Share on other sites More sharing options...
madongjun Posted May 22, 2013 Report Share Posted May 22, 2013 有兴趣的话，看一下外国朋友的思路。http://www.bridgebase.com/forums/topic/60234-whats-your-leadwhy/page__gopid__726635#entry726635 Quote Link to comment Share on other sites More sharing options...
wuhuan Posted May 22, 2013 Report Share Posted May 22, 2013 好东西，给力的思考。可不可以把莱特纳指示首攻性加倍做以补充：首攻没有大牌的花色。 Quote Link to comment Share on other sites More sharing options...
haikuo Posted May 23, 2013 Report Share Posted May 23, 2013 这是很有趣的牌 Quote Link to comment Share on other sites More sharing options...
paul279 Posted May 24, 2013 Report Share Posted May 24, 2013 好文章 逻辑严密的首攻顶 Quote Link to comment Share on other sites More sharing options...
haikuo Posted June 4, 2013 Report Share Posted June 4, 2013 攻C还是有理由的，我思考不够充分可能攻D！ Quote Link to comment Share on other sites More sharing options...
bluetooth Posted June 7, 2013 Report Share Posted June 7, 2013 很好的例子，学习了！ Quote Link to comment Share on other sites More sharing options...
xuefeier Posted June 9, 2013 Report Share Posted June 9, 2013 逻辑分析真不错，学习了谢谢楼主！ Quote Link to comment Share on other sites More sharing options...
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