There was a good lesson in the last round of the Candidates tournament on how to play a key game. Going into the last round Sergey Karjakin and Fabiana Caruana were in the joint lead and crucially were also playing each other. A draw between them would mean that Karjakin would qualify for a match against Magnus Carlsen because of a superior tie-break, but only if they weren’t also joined by Vishwanathan Anand who was playing Black against Peter Svidler. If Anand were to win this would boost Caruana’s tie break after which he would qualify instead.
In this situation many players might pull their punches and try to play it safe, but not Karjakin. Following the advice of Nicolai Krogius in his book Psychology in Chess, Karjakin just played a normal game. And he went on to win with a nice combination and has earned the right to play Carlsen in New York in November.
Here’s a Youtube presentation of the game: