Double Dummy Corner

 

Competition Problem 67

composed by Steve Bloom
presented for solving in September, 2010

DR4

♠ 9876

 QJ2

 A1032

♣ 32

♠ AJ

 8765

 8765

♣ 976

♠ 10543

 K

 QJ9

♣ AKQJ8

♠ KQ2

 A10943

 K4

♣ 1054

South to make four hearts against a trump lead.  What lead would have defeated the contract?

Successful solvers:  Robin Adey, Bob Bignall, Ian Budden, Bu Feiming, Rajeswar Tewari, Paolo Treossi, Wim van der Zijden

Promotion: Leigh Matheson became a Problemist, with 52 Master Points, several months ago.  Sorry for the late announcement.

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Solution

South wins with the A, North playing low, and leads a low club.

A.      If West rises with the 9 to lead another trump, declarer wins in either hand and loses a second club.  East returns a spade to the Q and A and West leads a third trump.  South comes to hand on the K and the remaining trumps subject East to a repeated squeeze.  Note that North must be careful to discard spades on the last two trumps so that when East unguards spades, South's K and 2 squeeze East again.

B.      If East wins the first club in order to attack spades and establish the 10, South wins the second spade and plays three rounds of diamonds, ruffing the third.  North is entered on a heart and South’s spade loser goes on the 10.  Now North can either exit in clubs such that the remaining trumps will score separately, or lead a spade for South to ruff.  In the latter case, if West keeps two trumps and therefore only one club, South exits on the 10.

The only lead to defeat the contract is the J, after which the defence can always negotiate a spade ruff if declarer tries for a club ruff in North.  Note that even if North is declarer and East leads a spade, West must duck.

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, 2010

Date last modified: 11 March, 2017