IT is one of the greatest thrills to squeeze both opponents. Think like this: ‘If Opponent A guards (say) Spades, and Opponent B guards (say) Clubs, then neither can guard (say) Diamonds.’ That was precisely the situation on this grand-slam deal from the Malvern Congress kindly sent to me a while ago by Worcestershire’s Alf Manders.
West led the King of Spades, a good start for declarer, as the Knave of Spades was a threat against West’s Queen. Declarer won dummy’s Ace and drew trumps.
Declarer had a choice of squeezes and it all depended on which opponent held four(+) Clubs, that is, the guard. If it was West, then he would be positionally squeezed on the run of the red-suit winners.
However, if it were East who held the Club length, then declarer would need a Double Squeeze. It was something of a guess, but, with West having advertised the King-queen of Spades, declarer elected to play East for the Club length.
Declarer cashed dummy’s Ace-King-queen of Clubs, then ran all his remaining Hearts. On the last Heart, West had to reduce to two Diamonds in order to retain the Queen of Spades. Dummy’s Knave of Spades could not be discarded (having served its purpose), whereupon East also had to reduce to two Diamonds, to keep the Knave of Clubs (or dummy’s eight of Clubs would be promoted).
Having squeezed both opponents down to two Diamonds, King, Ace and a third Diamond took the last three tricks—grand slam made. A lovely Double Squeeze.
We stay in Double Squeeze mode and move to La Plagne for some Alpine magic.
West led a Heart, although a Diamond lead would have scuppered the slam. Declarer won and led Ace and another Spade. West won and, pleased with his trump attack, shortening dummy’s ruffing value, led a second Heart (again, a Diamond would have worked better).
Winning the second Heart in hand, declarer ruffed a third Spade. He crossed to his Ace of Clubs, then led out his remaining Hearts.
As declarer led his last Heart, West needed to reduce to one Diamond in order to keep three Clubs (and prevent dummy’s King-knave-six to provide three tricks —via a finesse). Declarer now led his second Club to dummy’s Knave, then cashed the King. On this third Club, it was East’s turn to be squeezed down to one Diamond, in order to keep the master Spade.
Declarer discarded his Spade from hand and, at trick 12, led dummy’s Diamond (the Queen) to his Ace, then followed with the five of Diamonds, winning the last trick as West held a Club and East a Spade. It was a classic Non-simultaneous Double Squeeze, in the sense that the opponents were squeezed on different tricks.