Extreme Calculation
Here's a position from one of my more recent games. I was busted here, but it turns out the win is much harder than it looks. In fact, I went on to win the game just a few moves later.
White to move and win! Try to find the entire line... it has a study-like quality to it.
"The ability to work hard for days on end without losing focus is a talent. The ability to keep absorbing new information after many hours of study is a talent." - Garry Kasparov