zyp163 Posted January 23, 2013 Report Share Posted January 23, 2013 查找了一些资料，目前较多使用的多义二阶系列框架如下：2C：保持原2/1体系不变。2D：弱二高花及强均型。1.H or S 的弱二牌，2.20-22P强均型2H:H+m,通常是五张H2S:S=m，通常是五张S2N：双低花弱套。优：多出了2N表达双低叫品、2H/2S表达了一高一低的双花套缺：丢失了2D的弱二叫品其他更多优劣请贴友们列示。 Quote Link to comment Share on other sites More sharing options...
nathan2008 Posted January 23, 2013 Report Share Posted January 23, 2013 实战表明开2d= weak D 阻击能力不强， （敌人一般都有一套高花配合。） 看个人喜好。 Quote Link to comment Share on other sites More sharing options...
lycier Posted January 23, 2013 Report Share Posted January 23, 2013 那就意味着20-21hcp的一个无将阶梯的消失？要知道20-21hcp的无将阶梯的重要性和出现的概率远大于双低花的表达。 Quote Link to comment Share on other sites More sharing options...
zyp163 Posted January 23, 2013 Author Report Share Posted January 23, 2013 2N以2D过渡替代了。通过2D-（应叫）-2N，同样是2N，没有消失,只是换来OPP可能的争叫 Quote Link to comment Share on other sites More sharing options...
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