Double Dummy Corner

 

Competition Problem 144b

composed by Ian Budden
presented for solving in February 2017

DR4

♠ 2

 AQ32

 J432

♣ KQ72

♠ 987

 987

 A1098

♣ 654

♠ KJ654

 J10654

 K

♣ A8

♠ AQ103

 K

 Q765

♣ J1093

South to make four no-trumps.  West leads the ♣6.

Successful solvers: Leigh Matheson, Radu Mihai, Sebastian Nowacki, Zoran Sibinović, Rajeswar Tewari, Andries van der Vegt  Tables

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Solution

On the first trick North plays the ♣Q and East does best to duck.  South unblocks the ♣9.  Declarer finesses the ♠10 and then ducks a diamond to Eastís K.  East cashes the ♣A (best), on which both South and North unblock honour cards, and leads a heart to the K.  South leads a low diamond, on which West must play low, and Northís J wins, East discarding a spade.  North cashes the A, on which South discards a diamond, and then leads the ♣7.

A.      East discards a spade.  South overtakes the club and plays ♠A and another spade, won by East.  East must return a heart to North, South discarding his last diamond, and South wins the last two tricks with the ♣3 and the last spade.

B.      East discards a heart.  South plays the ♣3.  Declarer then cashes the master heart and throws East in with a heart, discarding a diamond and a low spade from South.  East must return a spade and South wins two spades and a club.

(If East leads a heart to the K at the fourth trick, declarer plays the same tricks in a different order.  A low diamond is led to the J and North exits with the ♣K to Eastís ♣A, South unblocking.  East returns a heart, won by North.)

Traps:

1.       If declarer ducks a diamond at the second trick, before taking the spade finesse, East will defeat the contract by cashing the ♣A and then leading a heart.

2.       If declarer tries to set up his diamond winner by leading the Q from South instead of a low diamond, West defeats the contract by winning with the A and continuing with any suit except a spade.

3.       If declarer leads the ♣7 from the North hand at the seventh trick before cashing the A, East unblocks the ♠J.  The contract can now be defeated, as declarer cannot set up the spades without letting West in to win a diamond.

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: 28 March, 2017