Double Dummy Corner

 

Competition Problem 128a

composed by Steve Bloom
(presented for solving in October, 2015)

DR6

♠ 54

 Q8

 AQ653

♣ AQ102

♠ KJ1092

 K

 K742

♣ J98

♠ 876

 1075432

 1098

♣ K

♠ AQ3

 AJ96

 J

♣ 76543

South to make six no-trumps against any lead.

Successful solvers:  Ian Budden, Wing-Kai Hon, Radu Mihai, Sebastian Nowacki, Wim van der Zijden  Tables

Several solvers fell into the trap I describe in line B below.

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Solution

A.      If West leads the K, the first five tricks are won by the A, A, A, 10 finessed, Q, giving this position with North on lead:

♠ 54

 Q

 Q653

♣ 2

♠ KJ1092

 none

 742

♣ none

♠ 876

 1075

 109

♣ none

♠ AQ3

 J96

 none

♣ 76

The next club squeezes East out of a spade: a heart concedes the 12th trick immediately and a diamond allows Northís diamonds to be established so that West has to lead away from the K to prevent North from making the diamond winners. West discards the 9.  South advances the last club, on which East is again forced to discard a spade.  North can discard either a spade or the 3ósay the latter.  Then A, Q, Q and another diamond endplays East.

B.      If West leads a low diamond, the play goes J, A, 8 to the A, 10 finessed, Q, 2 to South and the last club.  West is forced down to three three spades and three diamonds in this position, with South on lead:

♠ 54

 Q

 AQ6

♣ none

♠ KJ2

 none

 K74

♣ none

♠ 876

 1075

 none

♣ none

♠ AQ3

 J96

 none

♣ none

A heart to Northís Q squeezes West.  A diamond discard leads to an easy throw-in in that suit, so West discards a spade.  It now looks as if West can be thrown in with a spade after South makes the A and J, but thatís a trap, as West can discard the K on the J!  Instead, North must lose a diamond to West, simultaneously endplaying that player and squeezing East!  South discards from the opposite suit to East so as to take the last four tricks on a spade return from West.

C.      If West leads the K, North drops the Q and South wins.  A club to the A is followed by the 8 to Southís 9, a club finesse and the top club, leaving this position with North on lead:

♠ 54

 none

 AQ653

♣ 2

♠ KJ102

 none

 K742

♣ none

♠ 876

 107

 1098

♣ none

♠ AQ3

 J6

 J

♣ 76

The next club wrings a spade from East, who must keep three diamonds to protect West from and endplay in that suit.  West discards a diamond, then a middle spade on the last club.  East has to discard another spade.  Now the J squeezes West.  If West discards the J, North throws a diamond and South leads the Q to take the last four tricks with the A, 3, Q and A.  If West discards a diamond, North discards a blocking (!) spade.  Now North makes two diamond tricks and leads a spade to the Q.  West wins with the K but has to lead from J2 into South A3 at trick 12.

The play in this line isnít 100% precise as South can score the J earlier, such that it is instead the last club that squeezes West at trick 8.

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, 2015
Date last modified: 11 March, 2017