j*******e
发帖数: 2168 | 1 好像得挤。
吊完将， HA然后两手小H。打掉CAK和一墩大D。打出最后一张将牌时手上留 HKx，Dx;
明手暂留 Hx, DAx, CT;
1）假设W有长H， W得留HQx，CQ。明手垫去Dx， DA上把W挤住；
2）假设E有长H， W得留Dxx，CQ。明手垫去Hx， E得留HQx, Dx, HK上把W挤住. |
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x*x
发帖数: 46 | 2
basically ppl use SVD to do pseudoinverse.
1. Let B = pinv(A), where pinv(A) is the pseudoinverse of A, m x n matrix.
i.e., ABA = A
2. SVD (Singual Value Decomposition)
Let A = USV', where U & V are orthogonal matrices (U'U=I) and S is
a diagonal matrix.
3. -1
B = V S U'
so what u need is a SVD algorithm. U can get it from
" target="_blank" class="a2">http://www.geocities.com/xiaomaoxiong2000/lin-alg-cpp.hqx
it's been packed in HQX format. use some tools to unpack it first. |
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c****u
发帖数: 3277 | 3 he still has easy bids after 3D. with minimum hand and no sp
stopper, he can just bid 3S to ask for stopper in S.
with 6-4 shape, he can rebid 3H. With extra value, he would be happy to
cuebid. The hand wasn't bad for slam actually. there are quite a few good
features: three key cards and HQx,
You need very little to make 6D:
SQxx HAKxxx DKQJx Cx or SKx HAKxxx DKxxxx Cx
would be enough.
I wouldn't raise pd with 4 cards only when my hand is very no trump oriented
and control is bad. |
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c****u
发帖数: 3277 | 4 I would bid 2H.
The point is that your hand is not balanced.
you aren't sure where you belong to.
if pd has
Sxxx HQx DQxxx CAxxx
you should play 5D.
if pd has:
Sxxx Hxx DQxx CAQxxx, you should have reasonable play in 3NT.
if pd has a minimum hand, you should play 2NT.
if pd has:
Sxxx HAQJ DQx Cxxxxx, the right contract can even be 4H.
if you bid 2H, you can find all the reasonable spot.
for the first hand:
1D 1N
2H 3D
3S 4C
5D
for the second hand,
1D 1N
2H 3C
3NT
for the 3rd hand:
1D 1N
2H 3H
3S |
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c****u
发帖数: 3277 | 5 this is tough, usually it's not easy to handle two suiters if you open
1C, perhaps precision players should have the agreement that 4D cuebid show
this hand type.
If you bid 4H, you may miss cold 5C if partner holds something like this:
SKQxxx HQx DKx CJxxx, 5C would be cold, 4H may go down 1 if H 4-2 splits.
However, if you play 4D to show this kind of two suiters, you wouldn't be
able to show slam interest in spades. That's also a huge drawback.
If your overall strength is strong, I believe it |
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c****u
发帖数: 3277 | 6 第四副，双有。
西开叫1NT，东应叫2C，
西叫2S，东直接跳4S封局。
我的牌是:S52 HAKT DT732 CT975
杨庆首攻CQ, 明手是
SAQ74 H62 DK865 CK82
Hansa和Irina 打15-17的1NT开叫，
因此这副牌她们至少有27点，最多有29
点。似乎防守方的机会比较渺茫。
我能看见两副H, 如果庄家C是3张，我们还
会有一个C赢墩。最后只能希望杨庆有DQ，
而庄家有三张方片。因此最理想的情况是
庄家拿了4-3-3-3,5-2-3-3或者4-2-3-4
之类的牌型。
Hansa 用CA得进，我跟CT表示我有CT9的连接张。
Hansa连拔3轮将牌K,A,Q,
停在明手，你垫什么?
很明显D不能垫，C和H垫哪个呢?
事实上HT是最好的垫牌，因为HT不会给出额外
赢墩，如果庄家有HQJx, H垫不垫，庄家都会
树立H,如果庄家只有HQxx, 垫HT也不会
导致她去树立HQ, 而放弃可能的D3-3或者DQ飞中
的概率。然而在实战中我选择了垫一个C, 垫C
的坏处是如果庄家拿了HQx DAJ9 CAxxx, 她可以
连打两个梅花投入我，我在拔了HAK之后 |
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c****u
发帖数: 3277 | 7 you really need quite a lot from partner to make 3nt:
DKJ, SA and a heart honor, and you can never find that out by bidding
2D, suppose partner raises you to 3D, will you try game?
Most likely, 3nt will go down I belive. Even if he holds
SAKx Hxxx DKxx Cxxxx, 3nt still isn't cold. This is a typical hand
that you need about 27 HCP to make a game because of your weakness in
opener's suit and your HQx doubleton. Change the holding
to Sxxx HAQxx DAKxx CKx, you want to bid here because this hand cont |
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c****u
发帖数: 3277 | 8 3nt is way more realistic than anything else, suppose you bid 3S,
how can your poor partner bid 3NT with something like Sxx HQx DQJTxxx CAKx?
3NT is ice cold here when 5D is just doomed. When you have KQxx in
preempters' suit and only Kxx support, it's not a great hand. |
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d****i
发帖数: 90 | 9
4C是什么?我觉得应该是爆裂叫,因为有3C.
如果真是爆裂叫,D一定不少于6张,因为叫了2D.(最平均3361)
如果2N后4C,说明一开始就不想打3N,那为什么不直接爆裂?1D-4C约成别的了?
如果2S后4C,不可能是红桃没希望的牌,因为那样就不用试贯了;所以4C间接表示了有
红桃控制(而且HKx未必安全,如果打D,除非同伴是HQ或HQx) |
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b***y
发帖数: 2804 | 10 既然是需要猜谁有红心控制，就不能说是“保证6NT+1”了。好比说双向的飞牌，没看
到对手的牌就无法“保证”飞牌成功。
“在第二张D时，暗手有Sx，DQx，C9”，我猜你是想说暗手Sx，HQx，C9。
第一种情况，W有H控制，你的打法是不成立的。每个人都剩三张牌，E保留CQ和两张黑
桃，W保留两张红心和一张黑桃，你挤不住他们。在这个情况下要让挤牌成立，你必须
在第五张方块前先把HAKQ打掉，而且手里要留SK作为进张。这个顺序也叫做RFL顺序。
具体变化可以看一下前面的帖子。 |
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l****a
发帖数: 272 | 11 拔DA, 然后简单飞是 50%
拔DA, HAHK, 然后紧逼的话, 两个红Q 在一家的机会是 50%,
但是, 这个打法多了东家持 DQx, 而没有 HQ 的机会, 这个大约是4% 的机会.
HQx 双张跌落的机会, 就不算了. |
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p***r
发帖数: 20570 | 12 For those tables who didn't receive S lead, they'll certainly take the D
finesse.
If D Q is on, you still can hope that D is 4-2 and you can make 7 and they
can make 6. If D Q is off, it is a push. So you beat them for slightly above
30% of times and other times, it is a push. This feels good enough to me.
If you play squeeze in H and D, the squeeze works for DQx or HQx or DQ and
HQ at the same hand. I don't have a calculator with me. Let me estimate as
following:
The worst case, west holds DQxx... 阅读全帖 |
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p***r
发帖数: 20570 | 13 If H is 3-3, you can always make it if you only lose one trump in C.
if H is 4-2, you can make it if you can ruff two H or HQx appears and you
also lose only one C later.
so it appears that you want to play LHO to hold 2 H and Cxx, CJxx, CKxx, CJx
CKx or CKJ. Or RHO holds 2H and can't overruff you, or after RHO's overruff
with CJ, you just take the success finesse in C and later play a squeeze in
S and H or S is 3-3 with SQ on side.
so it's good to just ruff H right away and see what happens.
If... 阅读全帖 |
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p***r
发帖数: 20570 | 14 Perhaps he saw west's HQx. |
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g****o
发帖数: 1284 | 15 第一墩不要去飞红心，而是直接用明手A拿就好了。这样即使东SK吃了以后回草花，暗
手CK拿了后兑现SJ，小方块到明手，连续拿方块，成如下残局：
S-
HX
DX
CAX
SX S-
H- HQX
D- D-
CQXX CJX
SX
HAX
D-
CX
现在明手出方块，东只能垫草花，西也可以垫草花。但接着出红心到暗手的A，西就受
挤了。 |
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g****o
发帖数: 1284 | 16 第一墩不要去飞红心，而是直接用明手A拿就好了。这样即使东SK吃了以后回草花，暗
手CK拿了后兑现SJ，小方块到明手，连续拿方块，成如下残局：
S-
HX
DX
CAX
SX S-
H- HQX
D- D-
CQXX CJX
SX
HAX
D-
CX
现在明手出方块，东只能垫草花，西也可以垫草花。但接着出红心到暗手的A，西就受
挤了。 |
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j*******e
发帖数: 2168 | 17 算不清，但感觉防家没叫牌的话还是你的打法(1)概率大些
1. H3-3或【H4-2且吃到C9且能兑现SK】
2. S4-3且吃到C9和C5
3. H3-3或双挤成立（必须是西持SJ东持HQ）或对西的三挤成立
显然以上打法都兼顾了HQx的情况。2的问题主要是怕第三张H上防家垫掉S而放弃了H3-3
，现在想来似乎得不偿失 |
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j*******e
发帖数: 2168 | 18 oh, playing HQ at trick 1 is such a fantastic play! I totally missed it.
It probably does not matter if W only has 2 Ds, but if he has 3, it seems
essential to throw HQ away to ensure communication at the ending.
After DA and a ruff, keep playing trumps to arrive at the following ending:
-
J85
x
x
-
Kx
Ax
x
x
73
-
Kx
Now play Hx, W cannot prevent your J from getting in to ruff the last D.
If you have HQx in hand, W ... 阅读全帖 |
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w**n
发帖数: 244 | 20 用archie 找肯定能找一堆.
ftp://ftp.yorku.ca/pub/york_other/chinese-mac/apps/MacBlueTelnetPPC.sit.hqx |
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