BBO Discussion Forums: Trick 2 defence - BBO Discussion Forums

Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

Trick 2 defence

Poll: Trick 2 defence (22 member(s) have cast votes)

What do you play at trick 2

  1. Another top diamond (13 votes [59.09%] - View)

    Percentage of vote: 59.09%

  2. A heart (8 votes [36.36%] - View)

    Percentage of vote: 36.36%

  3. Something else (1 votes [4.55%] - View)

    Percentage of vote: 4.55%

Vote Guests cannot vote

#1 User is offline   FrancesHinden 

  • Limit bidder
  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 8,482
  • Joined: 2004-November-02
  • Gender:Female
  • Location:England
  • Interests:Bridge, classical music, skiing... but I spend more time earning a living than doing any of those

Posted 2011-May-22, 04:35



You lead the ace of diamonds, and partner plays the 9 and declarer the 4. This is from one of the following holdings:

9
J9
J98
J96
986
J986

don't complain about your signalling methods.

What do you do at trick 2? Why?
0

#2 User is offline   y66 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,496
  • Joined: 2006-February-24

Posted 2011-May-22, 18:20

I voted for a heart. But I don't think that's right. If pard has Axx(x) of spades and a singleton heart, he would have played the DJ. I think the 9 is a middlish card and he's trying to show no preference. But I don't see how it can be right to continue diamonds. So I'll play a spade.
If you lose all hope, you can always find it again -- Richard Ford in The Sportswriter
0

#3 User is offline   MrAce 

  • VIP Member
  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,971
  • Joined: 2009-November-14
  • Gender:Male
  • Location:Houston, TX

Posted 2011-May-23, 01:36

I'd cash another . Anything else is just a guess.

If pd has stiff or doubleton we are happy, if he has 3 cards we didnt lose much by cashing it and we can study dummy again with new info. If pd has 4 we wld be better if we didnt cash but declarer looks in good shape if has stiff due to AKx anyway.
"Genius has its own limitations, however stupidity has no such boundaries!"
"It's only when a mosquito lands on your testicles that you realize there is always a way to solve problems without using violence!"

"Well to be perfectly honest, in my humble opinion, of course without offending anyone who thinks differently from my point of view, but also by looking into this matter in a different perspective and without being condemning of one's view's and by trying to make it objectified, and by considering each and every one's valid opinion, I honestly believe that I completely forgot what I was going to say."





0

#4 User is offline   gnasher 

  • Andy Bowles
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 11,993
  • Joined: 2007-May-03
  • Gender:Male
  • Location:London, UK

Posted 2011-May-23, 01:51

View Posty66, on 2011-May-22, 18:20, said:

I voted for a heart. But I don't think that's right. If pard has Axx(x) of spades and a singleton heart, he would have played the DJ. I think the 9 is a middlish card and he's trying to show no preference. But I don't see how it can be right to continue diamonds. So I'll play a spade.

As I understand the carding methods, partner's card is purely upside-down attitude. With J9x he is obliged to play the 9. If he played the jack we would know it was a singleton.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
0

#5 User is offline   gnasher 

  • Andy Bowles
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 11,993
  • Joined: 2007-May-03
  • Gender:Male
  • Location:London, UK

Posted 2011-May-23, 02:26

The vulnerability is annoying. At favourable we could rule out the possibility of a heart ruff, because with Axx x xxx Q98xxx partner would have overcalled 3.

Obviously either of the main poll options might be right, but a club could also be right - declarer might have AJxx xx xx QJxxx. We'd play a club to the king, parter would play a trump back, we'd win the next diamond, and we'd play another club to force dummy.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
0

#6 User is offline   benlessard 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,465
  • Joined: 2006-January-07
  • Location:Montreal Canada
  • Interests:All games. i really mean all of them.

Posted 2011-May-23, 02:58

Rules like an playing an honor show the 1 below do not trump common sense and good bridge, it has nothing to do with signalling methods. Playing UDCA Partner has no reason for wanting to keep a J here so he should play the J from Jxx and from J98x especially if he want a ruff a H.

So K of D hoping partner doesnt have 986

If you play that dropping a honor is an "alarm" its a different story. Its just simpler if you tell what are your carding agreement rather than what you expect partner has.
From Psych "I mean, Gus and I never see eye-to-eye on work stuff.
For instance, he doesn't like being used as a human shield when we're being shot at.
I happen to think it's a very noble way to meet one's maker, especially for a guy like him.
Bottom line is we never let that difference of opinion interfere with anything."
0

#7 User is offline   Free 

  • mmm Duvel
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 10,728
  • Joined: 2003-July-30
  • Gender:Male
  • Location:Belgium
  • Interests:Duvel, Whisky

Posted 2011-May-23, 07:07

I think a is the only realistic chance to beat the contract, and a is safest not to throw too many tricks away. So depending on the scoring I'd continue a top (imps) or switch to a (MP).
"It may be rude to leave to go to the bathroom, but it's downright stupid to sit there and piss yourself" - blackshoe
0

#8 User is offline   whereagles 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,900
  • Joined: 2004-May-11
  • Gender:Male
  • Location:Portugal
  • Interests:Everything!

Posted 2011-May-23, 07:18

Too little information to make an educated guess. I'll try a safe(?) heart.

I feel like complaining about the carding methods, but Frances asked us not to, so I won't :)
0

#9 User is offline   mike gill 

  • PipPip
  • Group: Members
  • Posts: 48
  • Joined: 2010-October-22

Posted 2011-May-23, 07:48

Cashing a top diamond and finding partner with shortness, or 3 and two outside tricks is by far the easiest route to beating this. In fact, if partner has 3 diamonds, we may have to cash now (Axxx Qx xx KQJxx or T9xxx Qx xx AKxx).
0

#10 User is offline   gnasher 

  • Andy Bowles
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 11,993
  • Joined: 2007-May-03
  • Gender:Male
  • Location:London, UK

Posted 2011-May-23, 08:02

I don't think Frances mentioned the form of scoring. It was IMPs.
... that would still not be conclusive proof, before someone wants to explain that to me as well as if I was a 5 year-old. - gwnn
0

#11 User is offline   akhare 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,261
  • Joined: 2005-September-04
  • Gender:Male

Posted 2011-May-23, 12:05

Hmm...K for me...
foobar on BBO
0

#12 User is offline   phil_20686 

  • Scotland
  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,754
  • Joined: 2008-August-22
  • Gender:Male
  • Location:Scotland

Posted 2011-May-23, 12:37

There is a small clue here I think. If declarer held 864 then he would probably be concerned about a ruff, so he would probably not have played the lowest outstanding spot. A normal declarer will think at trick one, and will normally prepare the 6 (or the 8) when looking at dummy so that he will know that there is at least one spot concealed from west and therefore west will have to worry about whether or not it was encouraging or discouraging. I think declarers play of the four means that there is almost certainly no diamond ruff, so I will try a heart.
The physics is theoretical, but the fun is real. - Sheldon Cooper
0

#13 User is offline   han 

  • Under bidder
  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 11,797
  • Joined: 2004-July-25
  • Gender:Male
  • Location:Amsterdam, the Netherlands

Posted 2011-May-24, 00:26

View Postphil_20686, on 2011-May-23, 12:37, said:

There is a small clue here I think. If declarer held 864 then he would probably be concerned about a ruff, so he would probably not have played the lowest outstanding spot. A normal declarer will think at trick one, and will normally prepare the 6 (or the 8) when looking at dummy so that he will know that there is at least one spot concealed from west and therefore west will have to worry about whether or not it was encouraging or discouraging. I think declarers play of the four means that there is almost certainly no diamond ruff, so I will try a heart.


The 8 and 6 are also lower than the 9?
Please note: I am interested in boring, bog standard, 2/1.

- hrothgar
0

#14 User is offline   phil_20686 

  • Scotland
  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,754
  • Joined: 2008-August-22
  • Gender:Male
  • Location:Scotland

Posted 2011-May-24, 04:23

View Posthan, on 2011-May-24, 00:26, said:

The 8 and 6 are also lower than the 9?


Yes, I failed to appreciate that declarer would know the defence had no pip lower than the nine before rho played. What i wrote would be correct if lho had the 6 and S had T 8 4, say.

Still I bet many delcarer's of a certain level would do exactly what I did in the analysis, which is to fail to check the pips and play according to a pre prepared strategy. I am relatively certain that I myself would have concealed the 4 out of habit. Maybe others would aswell.
The physics is theoretical, but the fun is real. - Sheldon Cooper
0

#15 User is offline   fromageGB 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,679
  • Joined: 2008-April-06

Posted 2011-May-24, 09:51

Top diamond. As already said, declarer has heart queen and will otherwise ditch the losing diamond on a heart.
0

#16 User is offline   ceeb 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 243
  • Joined: 2007-June-14

Posted 2011-May-24, 10:34

View Postphil_20686, on 2011-May-24, 04:23, said:

Yes, I failed to appreciate that declarer would know the defence had no pip lower than the nine before rho played. What i wrote would be correct if lho had the 6 and S had T 8 4, say.

Still I bet many delcarer's of a certain level would do exactly what I did in the analysis, which is to fail to check the pips and play according to a pre prepared strategy. I am relatively certain that I myself would have concealed the 4 out of habit. Maybe others would aswell.
Anyway, declarer knew what our signaling methods are, which is slightly more information than we have been given.
0

#17 User is offline   FrancesHinden 

  • Limit bidder
  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 8,482
  • Joined: 2004-November-02
  • Gender:Female
  • Location:England
  • Interests:Bridge, classical music, skiing... but I spend more time earning a living than doing any of those

Posted 2011-May-31, 13:37

Just in case anyone is still interested, the winning defence is not to switch to a heart: you have four top tricks (AK of diamonds, two black aces) but one of them is going on a heart.
0

#18 User is offline   MrAce 

  • VIP Member
  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,971
  • Joined: 2009-November-14
  • Gender:Male
  • Location:Houston, TX

Posted 2011-May-31, 14:59

View PostFrancesHinden, on 2011-May-31, 13:37, said:

Just in case anyone is still interested, the winning defence is not to switch to a heart: you have four top tricks (AK of diamonds, two black aces) but one of them is going on a heart.


And the one going on a heart is obviously not A :P
"Genius has its own limitations, however stupidity has no such boundaries!"
"It's only when a mosquito lands on your testicles that you realize there is always a way to solve problems without using violence!"

"Well to be perfectly honest, in my humble opinion, of course without offending anyone who thinks differently from my point of view, but also by looking into this matter in a different perspective and without being condemning of one's view's and by trying to make it objectified, and by considering each and every one's valid opinion, I honestly believe that I completely forgot what I was going to say."





0

#19 User is offline   jdeegan 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,427
  • Joined: 2005-August-12
  • Gender:Male
  • Interests:Economics
    Finance
    Bridge bidding theory
    Cooking
    Downhill skiing

Posted 2011-June-03, 23:46

<_< Am I trying to beat this hand or what? The loses when declarer has a stiff and three , not anywhere near the most likely configuration. To me the best chance is 2 a and ruff.
0

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users