Double Dummy Corner

 

Competition Problem 80

composed by Ian Budden
presented for solving in October, 2011

DR4

♠ A2

 J65432

 AJ432

♣ none

♠ K

 K

 KQ76

♣ A1098765

♠ J543

 Q10987

 1098

♣ Q

♠ Q109876

 A

 5

♣ KJ432

South to make four spades.  West leads the K.

Successful solvers:  Jean-Marc Bihl, Steve Bloom, Chaokai Cheng, Daniel de Lind van Wijngaarden, Dick Yuen, Wim van der Zijden.  Suggested DRs ranged from 2 to 7.

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Solution

Declarer wins the lead with the A, ruffs a diamond, ruffs a low club, ruffs a diamond, and then leads the ♣K (or the ♣J).

A.      West plays low.  North discards a heart and East ruffs (best).  [If East ducks, declarer can just play off his top tricks, for example A, ♠A, diamond ruff, ♠Q, and duck a spade, and East will eventually have to concede a trick to the J.]   Declarer wins the next three tricks with the A, ♠A, and a diamond ruff, ending in hand (the order depending on Eastís return at the sixth trick), then cashes the ♠Q, throwing a heart from North.  If East plays low, South exits with a spade, throwing another heart from North, and East will have to concede two tricks to Northís jack of hearts and long diamond.  If instead East unblocks the J under the Q, South cashes the 10, and exits with a low club, eventually scoring the ♣J.

B.      West plays the ♣A.  North ruffs with the ♠A, and South then ruffs a diamond, cashes the A, and exits with a spade to the ♠K.  West must lead a club.  If East discards, South will win and exit with a low club, eventually scoring both his remaining trumps.  So East does better to ruff and lead the Q, but South can either ruff this or duck and still make three of the last four tricks.

Trap: If South leads the K at trick 3, West ducks!

See the solution to Competition Problem #4 for the recommended tabular format if you prefer not to write in English prose.

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© Hugh Darwen, 2011

Date last modified: 11 March, 2017