I really think your character comes into play here. Which would frustrate you more: bidding 7 ♣ and not making it when partner held the wrong hand; or settling for 5 ♣/6 ♣ and making all 13 tricks when partner held the right hand? Zia Mahmood, Andrew Robson and Kent’s Jeremy Willans, the actual South at the table, all belong to the latter camp. And you?

West led the jack of spades and the first card dummy tabled was the king of diamonds, Fabulous – that’s the twelfth trick and, crucially, a dummy entry. One more top card and the grand slam would be a claimer. But no – nothing further of good news. Undaunted, declarer ruffed the spade and ran all his trumps to reach this ending as the very last trump was led:

West had to release a diamond to retain the ace of hearts. Dummy’s king of hearts could now be released – it had served its purpose. East also had to throw a diamond to retain his ace of spades. Now a diamond to the king and one back to the ace exhausted E-W of diamonds and
Willans scored the last trick with the six of diamonds. A perfect Double Squeeze, grand slam made and a story to dine out on for years.