Double Dummy Corner

Competition Problem 41

composed by Hugh Darwen

presented for solving in July, 2008

 DR6 ♠ AJ ♥ A432 ♦ A432 ♣ A32 ♠ K109 ♥ K10987 ♦ J865 ♣ K ♠ 87654 ♥ Q ♦ Q97 ♣ 10876 ♠ Q32 ♥ J65 ♦ K10 ♣ QJ954

South to make six clubs against any lead and defence.

Successful solvers:  Vincent Labbé, Rajeswar Tewari, Daniel de Lind van Wijngaarden, Dick Yuen, Wim van der Zijden.

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Solution

First, I am indebted to Barry Rigal, who showed me the unusual repeated squeeze on which this problem is based.  Has anybody seen its like before?

If West leads from a major suit declarer can easily aim to give up a heart to East, ruff the third rounds of both spades and diamonds and run the trumps to squeeze West in the red suits.

If West leads a minor suit, a low diamond is best.  South wins with the K and plays four rounds of trumps, finessing against East's 10.  West safely discards two hearts on the second and third but is squeezed by the fourth:

A.      If West discards a spade, North wins a spade finesse and gives up a heart to East.  North wins the return and cashes the other pointed suit ace.  South ruffs a diamond and scores the Q to squeeze West again, in the red suits.  (Alternatively, North can cash the A and A and ruff a diamond.  A heart is ducked to East, whose spade return yields the same red suit squeeze.)

B.      If West discards a third heart, declarer gives up a heart (immediately or by playing the A first).  North wins the return and now the third round of hearts, won by South's J, brings about a ruffing squeeze against West in spades and diamonds.

C.      If West discards a diamond, the 10 goes to J, A, and 9 (best).  South ruffs a diamond to set up North's fourth and plays a spade to the J.  North advances the 4.  West will discard a spade because a heart discard simply allows a heart winner to be established.  If East discards

1.       the Q, South discards a spade.  North cashes the A and exits with a low heart to endplay West.

2.       a spade, South discards a heart.  North cashes the A and leads a low heart.  If East wins, the Q and A take the last two tricks; if West wins, the J and Q take them.

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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