The usual line of play was ♥ to the jack-queen. The best play is probably ♦ to king, and then ♣ back to your hand like you first tried to drop stiff diamond and now are going to try to hook ♦ on second round. West is unlikely to find the right defense then.. .(unless of course EAST read Vinje's book and play low ♥ at trick one). Only one player found that play (lehman 58), what everyone else did, is cash six ♦'s then lead a club. West won the club and lead back a black suit. EW must have a way to figure out how to grab hearts, not the least via a number of signals...
1. East duck completely trick one
2. East give smith echo in diamonds, and then pitch away both spades on diamonds then club jack
3. Other?
Anyway, seemed odd that leading the six card fit always destroyed 3NT, leading the nine card fit allways (almost) let it make. .

Help

West 4-4 in the majors, pretty much lead a major every time (a few lead a club, which makes the hand easy). Those that lead a small spade ALWAYS defeated 3NT.
♥4 LEAD = 15, down once (overtricks common)
♥9 lead = 1, made with overtrick
♠2 lead = 8 times, always down
♠9 lead = 2 times, one made, one down
♠K/Q lead = 8 times, made 3, down 5
♣4 lead =1 , amazingly down
♦5 lead = 2 times, made both