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Suit combination with bidding inferences


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[hv=pc=n&w=shk8dat432cakjt64&e=skjthqt3dq95cq852&d=w&v=e&b=16&a=1c(Cs%2014%2B%20HCP%20or%20bal%2015%2Bhcp)2h2n4s4np5cppp]266|200[/hv]

 

Three questions:

 

1) How do you play the D suit for one loser a priori?

2) Does the bidding change your line?

3) Do you agree with 2N by E, or is it too wet? (alternatives are pretty standard - X for TO and 3N)

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If they lead a doubleton spade, I may not care.

 

Spade to 10/Q/ruff

A and if all follow

J to Q

K/A/ruff

small heart towards dummy, if N ducks my second heart goes away, if he flies the A and returns a heart, I win the K

6 to 8, pitch 2 diamonds on major winners, run Q and I don't care what happens to it, I'm only losing 1 at most

 

1) I think a priori you run the Q then run the 9

2) It looks like N has 6 hearts and S has 8 spades, so S has 8 spades and 2 hearts, obviously if he follows to 2 clubs you cash A

3) 2N/3N both plausible

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If they lead a doubleton spade, I may not care.

 

Spade to 10/Q/ruff

A and if all follow

J to Q

K/A/ruff

small heart towards dummy, if N ducks my second heart goes away, if he flies the A and returns a heart, I win the K

6 to 8, pitch 2 diamonds on major winners, run Q and I don't care what happens to it, I'm only losing 1 at most

 

1) I think a priori you run the Q then run the 9

2) It looks like N has 6 hearts and S has 8 spades, so S has 8 spades and 2 hearts, obviously if he follows to 2 clubs you cash A

3) 2N/3N both plausible

If they lead a trump then you do not have enough entries to establish and enjoy your major suit winners safely. And you may go down if North has Qx in spades. I think you play the eight of clubs on an initial trump lead, hoping to get back into your line.

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6 to 8, pitch 2 diamonds on major winners, run Q and I don't care what happens to it, I'm only losing 1 at most

 

Why? It doesn't seem like you've achieved anything - you still have three diamonds to play and the ability to ruff the fourth, and you still lose if N has the K and you misguess the J.

 

1) I think a priori you run the Q then run the 9

 

This works iff S has either honour, right? Small to the 9 then running the Q looks better to me - you win if N has both honours or neither or the J only or stiff K.

 

2) It looks like N has 6 hearts and S has 8 spades, so S has 8 spades and 2 hearts, obviously if he follows to 2 clubs you cash A

 

Y, makes sense. You still lose if S started with KJx, but that doesn't seem very likely now...

 

3) 2N/3N both plausible

 

Which is plausibler? :P

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If they lead a trump then you do not have enough entries to establish and enjoy your major suit winners safely. And you may go down if North has Qx in spades. I think you play the eight of clubs on an initial trump lead, hoping to get back into your line.

 

He specified if they lead a .

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Why? It doesn't seem like you've achieved anything - you still have three diamonds to play and the ability to ruff the fourth, and you still lose if N has the K and you misguess the J.

 

 

Because N if he wins the K has to play another diamond resolving the position for you or giving you a ruff and discard.

 

The end position is something like

 

[hv=pc=n&s=s98hd87c&w=shdat4ct&n=shjdkj6c&e=shdq95c5]399|300[/hv]

 

It doesn't matter where the diamond cards are, you're only ever losing one if you run the Q, there is no guess.

 

And Lamford, yes I specified on a spade lead that looks like a doubleton, if N has Qx/Ax, he will have led the honour if he leads a spade so there is little risk.

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How is small to the 9, run Q better than small to the Q, run 9?

 

I'm not sure it is. If I were confident what the best play was I wouldn't have asked :P

 

I can't see anything to choose between them, though. Both seem to lose to split honours with N having at least a doubleton if the wrong honour is in the wrong place and work otherwise.

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I'd assume S had 8 spades, N might well bid 5 with 3.

 

If S has 8 spades and 6 Hearts suitplay wants to lead small from AT432. If South only has 7 spades, it wants to lead small from AT432, but leading the 5 and covering with the T is almost, but not quite, as good.

 

As that comparison is interesting, let's call small from AT432 A and the 5 from QT5 as B

 

A wins when the suit breaks Kxxx - J, Jxxx - K, xxx - KJ, xx - KJx, x- - KJxxx and V - KJxxx (in the sense that it goes off one less on the Hawaiian break).

 

B wins against K - Jxxx, Jxx - Kxx, J - Kxxx. All other breaks are the same trick expectation.

 

Here is the table of odds and trick expectation produced: http://i.imgur.com/weaRV3H.png

 

With the vacant spaces set: http://i.imgur.com/OsAmaNi.png

 

Side note, I wish I could be as good as suitplay when deciding the best line in a suit!

 

edit: If you only have two entries to dummy, it wants to start with the 5 up to the 10.

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