Double Dummy Corner

 

Competition Problem 113a

composed by Paolo Treossi (after Kurt Bendix)
presented for solving in July, 2014

DR4

♠ AQ

 98765

 3

♣ A8654

♠ KJ10

 432

 KJ1098

♣ Q10

♠ 8765

 KJ10

 A2

♣ K732

♠ 9432

 AQ

 Q7654

♣ J9

South to make three hearts.  West leads the J

Successful solvers:  Jean-Marc Bihl, Steve Bloom, Ian Budden, Leigh Matheson, Radu Mihai, Sebastian Nowacki, Andries van der Vegt, Dick Yuen, Wim van der Zijden   Tables

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Solution

For the record, this problem was derived from Problem 61 in George Coffin’s Sure Tricks.  That problem, a 10-carder, was found to be very unsound and so does not appear in my Coffin collection.

East must win with the A and return a minor suit.  North wins the second trick and then the play goes: heart finesse, spade finesse, second spade, second heart to South, spade ruff, third heart to East, South discarding a club.  We now have one of two similar 5-card endings, depending on which suit was returned at trick 2:

A

♠ none

 none

 none

♣ A8654

♠ none

 none

 KJ10

♣ Q10

♠ 8

 none

 none

♣ K732

♠ 9

 none

 Q76

♣ J

or:

B

♠ none

 9

 none

♣ 8654

♠ none

 none

 KJ109

♣ Q

♠ 8

 none

 2

♣ K73

♠ 9

 none

 Q765

♣ none

In both cases East is on lead with North-South needing three more tricks.  If East leads a spade, then declarer wins and in case A plays A and another club, when either North will make an extra club or South the Q; in case B a diamond ruff and club exit have the same effect.  If East instead leads a club, then in case A North wins and plays a second club, after which either South makes the Q and 9 or, when East rises with the K, North makes two more club tricks; in case B the Q is allowed to hold and so is the K, after which the Q, 9 and 9 take the last three tricks.  Finally, if East leads the 2 in case B, North ruffs and if East rises with the K on the next trick, South discards the 9! (otherwise South discards a diamond and later makes the Q and 9).

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, 2014
Date last modified: 11 March, 2017