IVAN CY LO

If X is major, I would think this jump cue is asking for stopper. If X is minor, splinter and GF in major suit, probably holding 5440 or 5431 or 5530 with short in opener suit.

My sense told me that HA is on-site because the weak jump. But DK may not be on-site, SAQ may be split honor and looks like South holding Q. Take with CA, small towards HK, finesse the SQ by ST.

weak 1NT(12-14), 1 minor opening = ? I know some players play this 1 minor opening = extremely weak, just around 10-11 HCP. So this pass with means below 10 and unable to takeout at 3 level.

我感覺如將牌是5-0 分布，先拔CA 再連打將牌，持5張將牌會被迫被投入，D8總可以吃一楝，不相信你可以試一下。

East 的5D 有問題。應該扣叫4H。

王吃黑桃如果外邊有人黑桃缺門以D9 超將吃你的王呢? 或是缺黑桃不能超將吃而墊掉單張草花呢? 王吃完後拔CA，如果真的擔心，不如直接拔CA，然後再打王吧。

I would bid 4C if Partner first double is a take out. Quite obvious that we have a fit in club, and partner may be 4333 flat hand with somehow 12-13HCP strength, LoTT will be 17 and leave a 3MX contract will easily loss a game value. RHO redouble is in doubt, I think he has around 8-9 HCP with some good cards, such as 2As.

此1NT 爭叫定義是16-18? 看來莊家有6幅鐵的D，不然怎會夠力懲罰1NT? 首攻很大機會決定頂分還是底分。個人直覺，首攻C3 像是比較安全。畢竟如同件有黑桃套5張，16-18分在此例中應盡早在一階叫出。與同伴的配合比較像是在C套上，期待吃4幅C+2As 旁門邊花打倒定約。

不該改叫。PARTNER 的4C 很大機會是TRAP，陷阱式叫牌，並非代表CLUB 有配合。 試想一下，如CLUB 有配合，NORTH 為什麼叫4C 讓敵人輕鬆地叫出4S 而不叫5C? 這牌主導永遠在阻擊叫後的答叫方。 個人遇過很多這些沒配合卻裝作有配合的橋手叫牌，準備在敵方叫出過高時作出懲罰。這些陷阱式叫牌通常是賭博的一種，如別人不上當而作出懲罰，罰分一般是巨大的。如此例，4C 都倒2，罰分無局時300，而4S 則有可能下1。雙方都沒成局合約。曾組遇過有牌手在持單張D時，同件弱2開叫2D立刻加叫至5D偽裝有配合。(它是4513牌型，準備在對手叫出5階高花叫品時懲罰)

比較難理解第五輪為何將吃黑桃。而不先清將。將吃黑桃有風險。敵方可以吃進第二輪清將時再出黑桃迫王而升級一楝將牌。(將吃2次，方塊必須是3-3才安全)

我認為，必須搞清楚OPP 的2D 是甚麼叫品。 在1NT 後的cappelletti 爭叫，2C 是單套6張，2D是指雙高花。這個2D 是人為叫品，如指明是紅心套，則很容易處理，先扣2H表示實力，如敵方立刻加叫至4H，PARTNER X 就是持有紅心套的懲罰，PASS 就是FORCING PASS，否認黑桃套。 先扣2H，再叫4NT，明顯是雙低花套，紅心單缺的技術性加倍，要求PARTNER 轉移至低花。至於進貫，則要有更高的約定叫技巧。 如這手牌，我持東的會扣叫4H，表明紅心沒廢點，沒A沒控制，歡迎任何花色的約定，請同伴按自己手牌選將。

如是低花堅固套，最好就是跳扣叫3S，準備打3NT。PARTNER 如持有H+S套，盡管只有5-6分，懲罰4S 的很大機會拿300/500分。

If responder is 5134 with a fair 9-10HCP, easy to bid 2S at this position.

it looks 3NT is a better contract than 4S, especially holding AX. If partner spade is semi-solid like KQJXXX, he has 10-13 points in side suit and East 3Ts should be credit for NT but not for 4S. 6 tricks are held and just need to develop 3 more tricks in side suits. 9 tricks seems easier than 10 tricks

If your partner plays 5 cards major, quite obvious that he has 4 cards of D. (If support double is on, 2S,4H(in Max), 4D(Probably), 3C). If 3-3 minor he should open 1C, it is just basic understanding. With 4144 on hand and partner pass the 2H overcall, bid 3D in this position, usually is true because your fit quite obvious will be diamond. (Partner holds less than 3 card of spade and open a 1D, quite obvious he holds 4 cards of D and more). If opener holds 4144, don't be crazy, he has to bid 2S and won't left this question to you.

double, let partners choose to let go or play. According to the LoTT, our fit obvious in minor but not in spade, or an extreme case that either any pairs do not have fit. If partner holds short in H and 5-6 cards of D, he will bid 3D. If partner holds 2344, he will glad to penalty, opp spade losers will be 2/3 and partner can ruff 2 times of spade. (LoTT is 14, probably can set 2) If partner holds something off shape, says 1-2-5-5, he will bid 2NT as asking to transfer to the best minor. (This 2NT obvious doesn't mean has H guard because he can choose to penalty. If support double is on, I will regard this pass is a forcing pass, ask partner please do something.

1: 2S，直接當1NT 開叫競叫處理的CAPPELLETTI 2: 扣叫2H，強TAKEOUT。準備打4-3 FIT 的2S

1. 9 有可能是Q9X 的中間張，歡迎信號。從同伴沒加叫至3階來看，多數是3張而非4張。 2. 出D，準備莊家洗第二輪王牌時停住，叫同伴回D 3. 有可能是莊家持有，莊家開叫1H，最少持有HA，DAK，CK/Q。如莊家自已動手打C 同伴有機會吃到一楝C。 4. K吃進 5. 回小S，一共吃到3副S，HK，及RUFF 一副D而打宕定約。

也不太用介紹。 1) 加羅佐在藍梅花一書中簡單介紹控制與定約高低的關係。A = 2控制，K = 1控制。打成局定約最少要7控制，即是3A+1K 是最低要求，小滿貫需要9個，大滿貫需要11個。此書還有介紹何時選無將定約，何時選有將定約。如大牌點以A 為主，應當選有將定約，KQJ 次級大牌為主則選無將。 2) 總楝數定律在競叫時比較多用，但在非競叫時也有其用處。如將牌失配須保守，雙方實力相當時8/9/10 打2/3/4 階定約。由於P 只是限制性加叫6-10，在8張將牌時一般需要25HCP 左右才可以打4階。因此只作出3階邀請。 3) 數輸張這個比較簡單。如不懂數，則堅決在2階直接位置競叫時需6張好套+11HCP(換算輸張約為7張左右)，即使P 無配合也只是-2。2階不同一階競叫，有些人打LEBONSOL，PASS 可以是強牌的FORCING PASS，等待機會作出懲罰。

Rationale is I would choose to pass with such quality of 2 suits and with just a fair strength of hand.

Ruff the spade 2 times, if any one was ruffed down K/Q, duck 1 round of spade, T/9 could always win and just loss 1 spade trick.

Only 10 HCP on hand and still rooms for partner to balancing reopen. I will stay pass for this pre-emp action.

這個不是簡單加倍迫叫，在對方答叫後的加倍後再叫的牌是不迫叫的。只是高限競叫黑桃套。如加倍後，再扣叫才是絕對的迫叫，包括在加倍後左敵再叫的扣叫。 例子: 1D - X - 2D - P P - 3D! 這時3D 肯定是迫叫，任何非扣叫的叫品都是不迫叫。

This 3S is below 3NT line and I would treat this as an asking stopper in S for 3NT. 3D just as a game forcing value but it doesn't guarantee a slam interest.

5521, P 很有可能持HQJT的手張牌。 估計可吃到DAQ，H一副，S一副。