This deal is from a Gold Cup match in February. Michael Newman arrived in four hearts on the queen of diamonds lead. The technical line is to win, take two rounds of trumps with the queen and king and then to trump two diamonds in dummy, hoping that the hand with long diamonds has three trumps. The odds for this play are not good so Michael smoothly ducked the opening lead. West blithely continued with another diamond, Michael was able to draw all the trumps and discard a spade from dummy on the ace of diamonds, losing just two spades and a diamond. A flat board as decarer in the other room took the technical line which worked.
Thanks to Michael Newman for reporting this deal