Pulling the trigger

It takes a certain amount of intestinal fortitude to sacrifice a piece against a Grandmaster. Even strong masters can be faint of heart at the critical moment, as Kevin Bachler explains:

Vanity Catalan (or, "Kids, don't do this at home")

Granted, I missed stronger continuations, and my opponent was fully equal after the Exchange sac. But if Petrosian had been a coffeehouse player, he'd have approved.