Double Dummy Corner

 

Competition Problem 151b

composed by Steve Bloom
presented for solving in October 2017

DR3

♠ Q107

 10875

 A32

♣ 832

♠ 984

 9

 K10765

♣ KJ96

♠ J65

 KJ4

 J98

♣ Q754

♠ AK32

 AQ632

 Q4

♣ A10

South to make six hearts.  West leads the ♠9.

Successful solvers:  Ian Budden, Ed Lawhon, Radu Mihai, Sebastian Nowacki, Zoran Sibinović, Rajeswar Tewari, Dick Yuen, Wim vand der Zijden. Tables

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Solution

North covers with the 10 in order to guarantee two entries in that suit for the trump finesses.  Assuming East covers with the J, South wins and leads a second spade, North finessing the 7.  The 10 is covered by the J and Q, followed by a third spade to North, then the 8 for the second trump finesse.  When the 8 holds the 7 follows, unblocking so that South can score the 6 and stay on lead in this position:

♠ none

 none

 A32

♣ 832

♠ none

 none

 K107

♣ KJ9

♠ none

 none

 J98

♣ Q75

♠ A

 3

 Q4

♣ A10

The A now squeezes both opponents, North discarding from the opposite suit to West.  Clearly the defenders cannot discard from the same suit as that would allow a long card to be established in North by ducking a diamond or playing A and another club as appropriate.

A.      If West throws a club and East a diamond, the play of A and another club either endplays West or, when East wins with the Q, establishes North’s 8.

B.      If West throws a diamond, the 3 comes next, forcing a club from West.  North also discards a club and East is squeezed: a diamond discard allows a trick to be established in that suit by ducking the first round, whereas baring the Q allows West to be thrown in by A and another club.

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: 10 November, 2017