South opened One Diamond, North responded Two Clubs, and South jumped to Three Diamonds. North explored with Three Hearts and Zia, as East, interjected a double. (He hates to say "No bid".) After two passes, North bid Three No-trumps, South advanced (rather dangerously) with Four No- trumps and North ended the auction with a jump to Six Diamonds.
On lead, as West, Gabriel Chagas must have had Zia's earlier coup in mind, for instead of the ace and another heart, he led a spade. This allowed declarer to make an immediate claim of his contract with an overtrick.
It was a curious deal. Against Three No-trumps by North, East has no trouble in selecting a low heart for his opening lead and so collecting five tricks and 100 points. In an odd way, perhaps the safest contract would have been Six No-trumps by North! Whenever this was reached, East felt that it was far too dangerous for him to lead a heart away from his king and, as you can see, any alternative leads to North-South making all 13 tricks.