Competition Problem 119a
South to make six spades. West leads the ♦K.
Successful solvers: Jean-Marc Bihl, Ian Budden, Abby Chiu, Wing-Kai Hon, Radu Mihai, Sebastian Nowacki, Wim van der Zijden Tables
North wins with the ♦A and leads the ♥7!
A. If East plays low, South covers with the ♥10 and West wins and might as well lead another heart to Northís ♥A. South comes to hand on the ♣K and ruffs a heart with the ♠2. North now leads a diamond.
1. If East discards, South ruffs and crosses to North on a spade. North leads another diamond. Assuming East discards again, South, ruffs, crosses to North on a club, and cross-ruffs a club and a heart. Southís remaining trumps take the last two tricks with ♠A10 over Eastís ♠J9.
2. If East ruffs, South overruffs. North wins two trumps tricks and South comes to hand on a diamond ruff (or overruff). Now West is down to three queens and the ♣10 and is triple-squeezed by the next spade from South in this position
This ending also arises if East ruffs the third diamond in line 1.
B. If East wins with the ♥K and (best) leads a club, South wins with the ♣K and crosses to North on a spade. Thereafter there are several lines to success, thanks to the triple squeeze on West. For example, South can just play five rounds of trumps, finessing against East. This is the position as South leads that fifth spade:
A red suit discard from West gives two extra winners in that suit, while a club discard allows North to win two clubs tricks to catch West in a ruffing squeeze.
See the solution to Competition Problem #4 for the recommended tabular format if you prefer not to write in English prose.
Hugh Darwen, 2015