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Defense Vugraph 4/27

#1 User is offline   kfay 

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Posted 2013-April-27, 20:06

Saw this decent problem today on Vugraph:



T1: jack, 4, KING, seven

Your lead
Kevin Fay
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#2 User is offline   SteveMoe 

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Posted 2013-April-27, 20:13

J, expecting to lead the 2 next.
Be the partner you want to play with.
Trust demands integrity, balance and collaboration.
District 11
Unit 124
Steve Moese
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#3 User is offline   inquiry 

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Posted 2013-April-27, 22:21

It is reasonable to ask why partner didn'[t lead his singleton in declarer's minor. The reason would seem to be he has a void so responder has five hearts (or six) and a five card minor, and at least two spades (since he seems surely to hold the Q).

So one must decide which hand South would try 2 on...

Q x (x)
K Q x x x (x)
void or (x) or (J)
A J T 8 x

OR

Q x (x)
K Q x x x (x)
J 9 8 6 4
void or (x) or (A) or (J)


When you make your best guess at which suit partner is void in, return that suit. Partner will ruff and return a spade since he knows you don't have the Q. Which would you guess?
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#4 User is offline   cnszsun 

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Posted 2013-April-27, 23:29

View Postinquiry, on 2013-April-27, 22:21, said:

It is reasonable to ask why partner didn'[t lead his singleton in declarer's minor. The reason would seem to be he has a void so responder has five hearts (or six) and a five card minor, and at least two spades (since he seems surely to hold the Q).

So one must decide which hand South would try 2 on...

Q x (x)
K Q x x x (x)
void or (x) or (J)
A J T 8 x

OR

Q x (x)
K Q x x x (x)
J 9 8 6 4
void or (x) or (A) or (J)


When you make your best guess at which suit partner is void in, return that suit. Partner will ruff and return a spade since he knows you don't have the Q. Which would you guess?


I would play for the first type. Becuase even if we guess wrong and declarer happens to hold diamond suit, he still can't make with 3-5-5-0(he would be forced).
Michael Sun

#5 User is offline   Codo 

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Posted 2013-April-28, 09:40

I would cash the second spade.
1. I will get a signal from partner.
2. If I lead a minor and I am wrong, I am not sure wheter declarer cannot discard his second spade from dummy if he holds 6 hearts...
Kind Regards

Roland


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More system is not the answer...
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#6 User is offline   Alik1974 

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Posted 2013-April-28, 19:01

Partner should have a 6-card to bid, otherwise he might pass with only 5 and 2 or 3 low .
He should have a void in declarer's minor or he would have led a singleton in that minor.
His most probable distribution is therefore 6-3-4-0 or 6-3-0-4.
As Codo said, cashing a second will allow partner to signal his void.

Two , A and a ruff should be OK for one down.
I write some unusual articles about bridge in my bridge blog.
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#7 User is offline   rhm 

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Posted 2013-April-29, 02:11

View PostAlik1974, on 2013-April-28, 19:01, said:

Partner should have a 6-card to bid, otherwise he might pass with only 5 and 2 or 3 low .
He should have a void in declarer's minor or he would have led a singleton in that minor.
His most probable distribution is therefore 6-3-4-0 or 6-3-0-4.
As Codo said, cashing a second will allow partner to signal his void.

Two , A and a ruff should be OK for one down.

9

A singleton lead would certainly have looked more attractive to West after this bidding, so West has a void in a minor.
In the critical case where South is void in diamonds and West void in clubs you have no diamond ace coming and cashing a second spade lets the contract make.
In this case you need to switch to clubs immediately.
Declarer can not be void in clubs because partner would not have bid 2 with a diamond void and a good club suit, neither would he pass 4.
Declarer is marked with the ace of clubs.
A club switch looses only if partner has specifically

JT8532 xxx - JT83

I bet against this and I am not sure he would bid that way with a six card spade suit and void at all white.
Why partner can not have a five card spade suit escapes me. But in this case he must be void in clubs and declarer void in diamonds.
Lead 9 at trick 2
Partner should have made your defense easier by leading an alarm clock signal. The J is not a good card, no matter what this spade holding is.
A high spade spot card lead might hint at a diamond switch, while the lowest spade might indicate a club preference.

Rainer Herrmann
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#8 User is offline   kfay 

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Posted 2013-April-30, 13:35

Partner did have a club void and a club switch at trick two was necessary to defeat the contract:

Link to hand:
http://bit.ly/186xM7O
Kevin Fay
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#9 User is offline   Codo 

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Posted 2013-May-01, 12:21

I really hate it that BBF creates the diagrams for two hands like this. It must have happened the thousands time that I did not realize that dummy is on my left at the diagramm but at the right in the play. :(
Kind Regards

Roland


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More system is not the answer...
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#10 User is offline   gszes 

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Posted 2013-May-01, 16:06

View Postrhm, on 2013-April-29, 02:11, said:

9

Partner should have made your defense easier by leading an alarm clock signal. The J is not a good card, no matter what this spade holding is.
A high spade spot card lead might hint at a diamond switch, while the lowest spade might indicate a club preference.

Rainer Herrmann

sorry for the partial quote lots of good material. The alarm clock signal works well when playing 4th
best when the bidding promises 5 or more in a suit. The lowest card can be a great lead director.
Unfortunately if playing 3/5 the lowest card is far too often nothing more than 5th best from 5. I totally
agree with the high spade spot (not the J) to ask for a dia return.
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#11 User is offline   gszes 

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Posted 2013-May-01, 16:13

off topic IMO next time just make the safer 4s bid and you will
probably have far fewer ulcers in the long run. P bid 2s they need
have a competitive hand and their spade length makes your spade
AK far less likely to be winners and your club K certainly looks l much
more likely to be pickupable. The worst case scenario for 4s should be
around down 2. It is a decent form of insurance with little downside
and lots of upside if the opps stretch too far going to 5h.
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#12 User is offline   kfay 

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Posted 2013-May-01, 20:49

View Postgszes, on 2013-May-01, 16:13, said:

off topic IMO next time just make the safer 4s bid and you will
probably have far fewer ulcers in the long run. P bid 2s they need
have a competitive hand and their spade length makes your spade
AK far less likely to be winners and your club K certainly looks l much
more likely to be pickupable. The worst case scenario for 4s should be
around down 2. It is a decent form of insurance with little downside
and lots of upside if the opps stretch too far going to 5h.


What about when it's -3 into a 4 contract that can be set (as here)?
Kevin Fay
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#13 User is offline   JLOGIC 

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Posted 2013-May-02, 14:23

Yeah but defending is way harder than being dummy so we should always save on every hand
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#14 User is offline   MrAce 

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Posted 2013-May-03, 02:49

View PostJLOGIC, on 2013-May-02, 14:23, said:

Yeah but defending is way harder than being dummy so we should always save on every hand



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