Competition Problem 17
by Hugh Darwen
South to make five diamonds. West leads the ♣A.
Successful solvers: Steve Bloom, Ian Budden, Simon Cheung, Helge Leonhardsen, Leigh Matheson, DaniŽl de Lind van Wijngaarden, Dick Yuen, Yunfeng Zhu, Wim van der Zijden.
Steve Bloom and Wim van der Zijden are currently joint leaders in the annual competition, both with a 100% record so far this year. Leigh Matheson is third with 22 master points (out of 31).
Promotion: DaniŽl de Lind van Wijngaarden becomes an Expert Problemist, having passed the norm of 100 D.D. master points for that level.
West does best to switch to a spade, on which North must discard a heart. South wins with the ™A and advances the ♦Q, followed by the ♦J if the ♦Q is allowed to hold. West does best to win the second diamond and return a third, taken by North as cheaply as possible. South ruffs North's low club with the ♦A and North is re-entered on the fourth diamond to cash the ♣K. East, now down to five hearts and one spade, is subjected to a jettison squeeze. A spade discard makes the South hand high with a heart entry, whereas a heart discard allows South to jettison the ♥A so that North takes the last five tricks.
If West persists with clubs instead of adopting the above defence, South ruffs the second club and leads the ♦Q as above. Say West wins the second diamond and returns a third club. Assuming East does not discard any hearts, South must ruff it high! North's trumps now exert the jettison squeeze as before. Similarly, if West returns a diamond instead of the third club, South must win with the ace, though now play can continue with either the last trump or the ♠A.
See the solution to Competition Problem #4 for the recommended tabular format if you prefer not to write in English prose.
© Hugh Darwen, 2006
Date last modified: 10 April, 2017