A deal from a Manchester online duplicate in August.
After a bidding sequence that is perhaps not recommended North arrived in five hearts. If you were given this as a declarer problem you would be unlikely to make the contract.
However, I will show you the East and West hands, see if you can make it now.
The difficulty for declarer is reaching the dummy. On a diamond lead (best for the defence) declarer trumps and starts with ace and another club to set up some tricks in clubs. East wins the club and plays another diamond, trumped by North. Now the eight of hearts to the nine, ten and king puts West on lead. He can play a spade, but North wins and plays the five of hearts to dummy's six for spade discards on the established clubs.
Thanks to Martin Ellison for reporting this deal