Exchange your Opponent's Active Defenders
Before showing my game on the White side of an Alekhine's Defence, I'd like to highlight two games which gave the seed of the idea at the critical moment.
Exchanging your Opponent's Active Defenders Example 1
Observe Grischuk's 16. Qd4 which he annotates "The Queen is the only defender of the Queenside, hence it is exchanged"
Exchanging your Opponent's Active Defenders Example 2
Observe Fischer's 19. Rd1 which he writes in "My 60 Memorable Games" the annotations: "In order to swap Black's only active piece"
Game Annotations and Analysis