This deal is from the friendly match between Manchester and Sussex held earlier this month.
North opened one club and South responded one heart, West made a weak jump overcall of two spades, North and East supported their respective partners. South with his enormous hand decided that Blackwood was the way to proceed. When North showed three key cards (East doubling five diamonds for some reason) South confidently jumped to seven hearts. West decided to sacrifice in seven spades, North passed this round to South who wasn't to be talked out of a grand so he bid seven notrump.
West dutifully led a diamond and the contract hinged on the play in the club suit. South reasoned that West was more likely to sacrifice with a singleton club than with queen doubleton and took a second round club finesse. East had discarded a diamond on the second heart so that was an unlucky four down. A small consolation for South was that West hadn't started with a spade which would have meant six down.
A grand slam was bid at four of the twelve tables, a couple played in six spades doubled for -800 and the rest played in six hearts.