This is a deal from my daily rubber bridge session at the Deccan Liberal Club.
While the system used at Liberal is Strong Club, I have modified the bidding to Standard.
Yes, 3 Nt is cold on any lie of the cards, but North didn't like his diamond holding and raised South's 3♥ to 4.
South won the first trick and played three rounds of hearts.
The hearts divided 3-3 and South ended up with 11 tricks.
Was South lucky that the opponents' hearts broke?
Much luckier than he thought! He doesn't need the 3-3 break. All he has to do to ensure the contract is cash ♥K, Q, and start the clubs. Let the man with 4 trumps ruff, let him cash a diamond. South wins the next trick, enters dummy with the ♥A and claims 10 tricks.