Double Dummy Corner

 

Competition Problem 143a

composed by Paolo Treossi (after David Solis-Cohen)
presented for solving in January 2017

DR4

♠ A2

 Q43

 AJ1032

♣ K103

♠ 6

 1098

 K9876

♣ Q954

♠ QJ10987

 K2

 Q5

♣ J76

♠ K543

AJ765

 4

♣ A82

South to make six hearts.  West leads the ♠6.

Successful solvers: Steve Bloom, Ian Budden, Leigh Matheson, Radu Mihai, Sebastian Nowacki, A.V. Ramana Rao, Zoran Sibinović, Rajeswar Tewari, Andries van der Vegt, Dick Yuen, Wim van der Zijden  Tables

Promotion: Rajeswar Tewari becomes a Master Problemist with this result.

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Solution

North wins with the A and leads a low heart for the finesse.  South wins two heart tricks (the second can alternatively be taken later) and plays a diamond to the A and a diamond ruff.  North is entered on the Q to lead a high diamond on which South discards a spade, giving this ending with West still to play a diamond:

♠ 2

 none

103

♣ K103

♠ none

 none

 K98

♣ Q954

♠ QJ10

 none

 none

♣ J76

♠ K5

7

 none

♣ A82

A.      If West wins and leads a diamond, a double squeeze comes about with diamonds against West, spades against East and clubs as pivot suit.  For example, the next four tricks could be won by the 10 (South throwing a club), K, A, and 7 to make the squeeze simultaneous.

B.      If West wins and leads the Q, South wins with the A, cashes the 7 on which North throws a diamond, and then a club to the K and the 10 squeezes East.

C.      If West wins and leads the 9, covered by North's 10 and East's J, South wins with the A and cashes the spade and heart winners to squeeze West.

D.      If West ducks, South ruffs a diamond.

1.       If East discards a spade, South plays K and another spade, squeezing West at the same time as endplaying East.  When West discards a low club, North throws the 10 and the forced club return gives declarer three club tricks, North capturing West’s Q and leading the 10 to pin the 9.

2.       If East discards a club, South exits immediately on a low spade.  Now a spade return squeezes West and a club return gives three club tricks.

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, 2017
Date last modified: 13 March, 2017