Double Dummy Corner

 

Competition Problem 78

composed by Paolo Treossi
presented for solving in August, 2011

DR6

♠ 9872

 7432

 8

♣ K1082

♠ none

 K965

 QJ106

♣ QJ654

♠ QJ10543

 Q10

 9543

♣ 9

♠ AK6

 AJ8

 AK72

♣ A73

South to make three no-trumps.  West leads the 5

Successful solvers:  Jean-Marc Bihl, Ian Budden, Leigh Matheson, Sebastian Nowacki, Wim van der Zijden

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Solution

South captures Eastís Q and immediately exits on the 2!

A.      If East wins, West will eventually be thrown in on the fourth diamond to concede a third club trick.  Declarer will establish a heart trick in the process.  For example, if East leads the 10 to J and K and West returns a diamond, South can win and lead the 8.  West wins this and leads another diamond, but South leads the 3 to J and K, discards the spade loser on the good 7 and comes to hand on a spade to throw West in with the last diamond.  [If East returns a diamond at trick 3 there are several routes to success for declarer, one of which is to win and play two more rounds of diamonds.  West could now play K and another heart, but South rectifies the count by losing a spade and then squeezes West in clubs and hearts.]

B.      If West wins (better) and continues diamonds, North discards the 8 and South wins the A and K.

1.       If West keeps the 6, North discards a heart.  South leads the 3 to J and K, North leads the 9 to 10 and K, and South exits on the 8.  East cashes the 9, North discarding the 10, and leads a high spade, but South wins with the A and leads another.  If East wins this trick the fourth spade, won by North, squeezes West; otherwise, North wins it and throws West in with a heart so that Southís A7 take the last two tricks.

2.       If West keeps a high diamond, North discards a spade.  South throws West in with a diamond, optionally cashing one top spade first.  West cannot now avoid conceding three club tricks in addition to a heart.  If West plays on clubs, South has three club stops and can set up the 7 by force.  If West instead plays the K and another heart, that player is thrown in on the fourth heart after a club to the J and K.  And if West exits on a low heart, South simply wins and returns the suit.

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