Double Dummy Corner

 

by

Hugh Darwen

Next update: Sunday, 06 September, 2015
New section: The Yarborough Collection.  Some tricky miniatures, worth looking at!
Problem 423 is perhaps the most difficult problem in the entire collection of 800+.
This one is pretty tough too!  So is this.  And nobody's solved this one

  About Double Dummy Corner.

Click here for history of updates to this web site.
Click here
for table of links to other sections.

Donations (voluntary, to me and cancer research)

Competition Problem 126a

composed by Sebastian Nowacki

DR?

♠ A865

 A1092

 Q3

♣ AK5

♠ KQ74

 5

 A109876

♣ QJ

♠ 102

 QJ876

 J2

♣ 9876

♠ J93

 K43

 K54

♣ 10432

South to make four no-trumps against any red suit lead by West.

To send me your solution, and please suggest a DR.
(If you don't see click here above, you may need to enable JavaScript in your browser.)

Entries to reach my inbox before: 13:00 UTC on Sunday, September 6th, 2015.

Competition Problem 126b

composed by Vincent Labbé

DR?

♠ J102

 AQ6

 AQ108

♣ K54

♠ none

 K54

 J75432

♣ QJ109

♠ Q9765

 10987

 K

♣ 876

♠ AK843

 J32

 96

♣ A32

South to make seven no-trumps.  West leads the ♣Q.

To send me your solution, and please suggest a DR.
(If you don't see click here above, you may need to enable JavaScript in your browser.)

Entries to reach my inbox before: 13:00 UTC on Sunday, September 6th, 2015.

Click here for the solution to Competition Problem 125a
Click here for the solution to Competition Problem 125b
Click here for the solution to Competition Problem 125c

All competition problems are previously unpublished.  You can add to your overall DD Master Points score (though not your annual one) by solving Competition problems 1, 2, and 3.

Selected section links (italicised ones are to other web sites):

Competition Rules Problem archive (880+ problems) Complete set of links
Ernest Bergholt's collection The Yarborough Collection The Pachabo Collection
George Coffin's collection Previous competition problems  
History of updates to web site Problemist tables  
Problems by each composer Problems by Difficulty Rating  
Eddie Kantar's problems Majalah Bridge Indonesia Anthony Moon's books on squeezes

I welcome links from other bridge related web sites.  For example, there is this Bridge link at the Dutch site www.opzijnbest.nl.  The double dummy page at Majala Bridge Indonesia includes several problems from this web site, with my permission.  I am always pleased for my collection to reach a non-English-speaking audience.

About Double Dummy Corner

Double Dummy Corner was started in January 2001 for the benefit of people interested in double dummy bridge problems.  Its main purposes are

  • to provide a repository of every worthwhile DD problem that has ever been published; and

  • to provide a medium for publication of new problems for competitive solving

It is updated every Sunday, in principle, subject to the vagaries of the webmaster's personal life.

As a matter of policy I provide solutions only to Competition Problems (usually shortly after the closing date), but you can send me a solution to any problem and I will reply (not always immediately!) telling you if you are right or, if you are not, where your solution goes wrong.  If you are right and it is your first attempt at the problem in question, then I add your name to the list of solvers for that problem.

Nowadays these problems can be solved by computer programs; indeed, I use such a program myself to check all the problems that appear here and to check submitted solutions.  I assume unless you tell me otherwise that your solutions result from your own mental efforts, not assisted by any computer program.

My archive of previously published problems is divided into six sections:

The first section is my own collection.  It currently has 516 problems and consists mainly of problems that appeared in solving competitions British bridge magazines from 1949 to 2005.  (The highest problem number is currently 516, but there are some gaps and there are some duplicates that came to light after their appearance here.)

The second section, consisting of problems composed and collected by Ernest Bergholt towards the end of the 19th century, has 51 problems, all of which have been checked by a computer.  The book contains 56 problems but I found five of these to be unsound.

The third section, currently under production, contains problems from another early book, Royal Auction Bridge: Problems of Analysis, by "Yarborough", believed to be the pen name of Colonel G.G.J. Walshe.

The fourth section, also currently under production, contains problems from a bridge column appearing in an Australian newspaper in the 1940s under the by line "Pachabo", a pen name used by Les Parker.

The fifth section, consisting of problems collected by George S. Coffin during the middle of the 20th century, is complete and has 304 problems.  Every problem is checked by a computer, which has so far caused me to discard 212 as being "cooked" (though in many cases nobody seemed to notice when they were first published).  I found 77 cooked problems in George Coffin's two books, out of 413.  Several of these cooked problems are given high accolades by Coffin.  Of the 635 problems published in my magazine column and, before me, Ernest Pawle's, 135 were cooked.  It all goes to show just how tricky this business is!

The sixth section consists of previous competition problems that have appeared on my front page.  Because these were all previously unpublished, they appear along with their solutions.

In addition to the main repository, there is a section entitled Mistakes From The Media giving some interesting examples of incorrect double dummy analysis by prominent bridge writers.  Yet another section, Exchange & Win Problems, is devoted to a comparatively new, intriguing kind of problem invented by Luigi Caroli.

Click on Competition Problem #1 if you want to have a go at one of the toughest problems ever composed.  During the period at the beginning of 2001 when I had no magazine column, I started to place "competition problems" here.  I only got as far as #2 (though much later added #3).  In 2005 I lost my magazine column again and restarted competitions here with #4.  Correct solutions to #1, #2, #3 and the current one(s) on this page, sent by e-mail, earn D.D. Master Points.

Richard Pavlicek has composed some nice problems that you can find at his web site.

Complete Set of Links

Problem archive Most recent addition to archive First problem in archive
Problemist tables Previous competition problems Ernest Bergholt's collection
The Yarborough Collection The Pachabo Collection George Coffin's collection
History of updates to web site W.H. Whitfeld (19th century D.D. composer) Problemist tables
Mistakes From The Media Exchange & Win Problems
Problems by Theme (incomplete) Problems by Difficulty Rating Problems by each composer
Competition Rules Back to beginning Anthony Moon's books on squeezes
Majalah Bridge Indonesia Richard Pavlicek's collection Eddie Kantar's problems

                  

© Hugh Darwen, 2015

Date last modified: 29 August, 2015