The Octopus Knight
In one of the critical games in this match, Kasparov repeats a daring gambit idea, knowing that Karpov's team has had over a week to prepare for it. The risk pays off, and his "octopus" knight on d3 prevents Karpov's pieces from getting into play. The result is a total bind, which Kasparov finishes off the masterpieces with a burst of tactics.
NOTE: ANNOTATIONS FROM THE MAMMOTH BOOK OF THE WORLD'S GREATEST CHESS GAMES.