BBO Discussion Forums: Defend or declare? - BBO Discussion Forums

Jump to content

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

Defend or declare? Can you resist the temptation to cheat?

#1 User is offline   1eyedjack 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,575
  • Joined: 2004-March-12
  • Gender:Male
  • Location:UK

Posted 2013-September-21, 06:57

4S by East


I know, double dummy problems have rather lost their shine with the advent of computers, but even so.

Defend or declare?

I only find it of interest because having found the solution using a DD solver, it remained not obvious (to me) why without some considerable thought
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
0

#2 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 2013-September-22, 05:02

I haven't worked it out, but my instinct is to say 'declare'
That's because at first sight it look to be off if East gets forced at trick 2, as he can no longer set clubs up and seems to concede an over-ruff if he starts on a cross-ruff.
Hence I assume that declarer can do something cunning to overcome this, otherwise why is it an interesting problem?
I've spotted some interest in the minor suit pips.
0

#3 User is offline   1eyedjack 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,575
  • Joined: 2004-March-12
  • Gender:Male
  • Location:UK

Posted 2013-September-22, 08:57

OK it wasn't interesting.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.

Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mPosted ImagesPosted ImagetPosted Imager-mPosted ImagendPosted Imageing) tr. v. - Any bid made by bridge player with which partner disagrees.

"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"

"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
0

#4 User is offline   PhilG007 

  • PipPipPipPipPip
  • Group: Full Members
  • Posts: 973
  • Joined: 2013-February-24
  • Gender:Male
  • Location:Dundee Scotland United Kingdom
  • Interests:Occasional chess player. Dominoes

Posted 2013-September-22, 09:08

View Post1eyedjack, on 2013-September-21, 06:57, said:

4S by East


I know, double dummy problems have rather lost their shine with the advent of computers, but even so.

Defend or declare?

I only find it of interest because having found the solution using a DD solver, it remained not obvious (to me) why without some considerable thought

My money would be on the defence. South leads the Q North takes the Ace,and on seeing the fall of declarer's king,
returns the 10 The defence take 1 2 and 1 for -1.
4 is a dodgy contract for NS. It could make but would rely on defensive errors
and there are entry problems too.
"It is not enough to be a good player, you must also play well"
- Dr Tarrasch(1862-1934)German Chess Grandmaster

Bridge is a game where you have two opponents...and often three(!)


"Any palooka can take tricks with Aces and Kings; the true expert shows his prowess
by how he handles the two's and three's" - Mollo's Hideous Hog
0

#5 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2013-September-22, 15:27

I though it was interesting, a bit easier than usual for a double dummy problem, but this is not a bad thing at all. After thinking of it I checked double dummy and for the first time this year I was right on the double dummy analysis. Didn't find any reason to post it other than bragging or spoiling the fun to others, none of them really relevant for me.

I also saw the funny diamond lie out Frances says, but I also saw that ruff and discard doesn't harm defence so no endplay operates.
0

#6 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 2013-September-23, 14:48

View PostPhilG007, on 2013-September-22, 09:08, said:

My money would be on the defence. South leads the Q North takes the Ace,and on seeing the fall of declarer's king,
returns the 10 The defence take 1 2 and 1 for -1.


It's easily making on a heart lead and a club back, just set up clubs.
0

#7 User is offline   nige1 

  • 5-level belongs to me
  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 9,128
  • Joined: 2004-August-30
  • Gender:Male
  • Location:Glasgow Scotland
  • Interests:Poems Computers

Posted 2013-September-23, 17:11

View Post1eyedjack, on 2013-September-22, 08:57, said:

OK it wasn't interesting.
IMO it's interesting but since I used a DD program I won't reveal my choice of seats. Thank you 1eyedjack
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