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叫牌心得

反低花加叫后敌方争叫的对策

叫牌过程为:(双无)

N   E   S   W

/   1C   /  2C

2D  ?

2C:反加叫。

开叫人:1,不叫;2,2H/S;3,X,大概是怎样的牌。

如果你持:xx,AKxx,Axx,QJxx,你如何应对?

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Cozofu:

double: for penalty

pass: denies a stopper in D

2H/S: garantees a stopper in D and the suit you bid.

2NT: natural and garantees all stoppers in unbid suits.

I would bid 2H with the hand you showed below.

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不知道大家对上述观点如何看,我对加倍的含义表示赞同,但其他的叫品设计还有商
量的余地。第一,牌型永远是最重要的,2H/S就是自然叫,表示一手非均型的牌,而不必
考虑方块是否有挡张(科大打惯二盖一的牌手可能对这种观点不甚习惯)。第二,2NT并不需
要保证三门都有挡张,关键是庄位好,如方块拿着K 10 X,K J X, Q 10 X等,对于2NT是否逼叫的问题,牵涉到对反低花加叫的要求,牌手可以自己决定。第三,PASS并不是表示方块没有挡张,而是一种逼叫性PASS,通常是均型,方块套不适于做庄或者是牌力较强不愿意叫2NT(可能是不逼叫的)。
    以上观点纯属个人意见。

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Cozofu:the problem is that you  usually don't have major suit fit. When you say you bid 2H/S to show unbalanced hand, you usually have shortness somewhere,so you can often splinter your shortness over 2D.  Introducing a major suit isn't very valuable in my opinion. You usually can gain at high level competition after you introduce a new suit only when you have some potential fit in that new suit, but pd's raise denies a fit in that suit. He usually denies an unbalanced hand as well, because he can splinter at 3 level with shortness if he has one, so you usually know he has about 2-3 cards in the suit. Also, your side has found the fit and you know your side has more HCP, so the basic concern is that whether 3NT is a reasonable contract. Without 2D, you would usually show the position of your stopper, so we still can pretty much play the same way even after opps overcall 2D. The only draw back is that sometimes 3NT may be wrong sided if you have something like this: SAxx HKx DAxx CQxxxx, because once a while partner may have DQx. however, even if you passed 2D, you may not get your pd to play 3NT.Because with DQx, he might not be able to bid 3NT. So positional issue isn't really a big concern here. There is also a way to solve this problem: if you think pd should declare, you can sometimes pass 2D, then cuebid 3D over pd's bid, which asks for half stopper, so this sequence would garantee pd to declare 3NT. However, you still may backfire sometimes, because sometimes pd may not have half stopper in D, but you still have 9 easy tricks in 3NT. Anyway, sometimes, it's really a guessing game.
Also, I am testing a 4 card major opening system with 1NT semiforcing and 2/1 game forcing, 1NT: 14-16 HCP.  It works well. I personally prefer a 4 card major opening system. 
 

 
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