Viktor Korchnoi vs Anatoly Karpov | Hastings 1971-1972 | The rivalry begins.

From a channel Lumen includes in full: PowerPlayChess is GM Daniel King's game-analysis channel: classic and current top-level games walked through move by move with the ideas explained, plus weekly puzzles.

A 17-minute video from PowerPlayChess's catalogue; the title names its topic.

Video by PowerPlayChess, played through YouTube's embedded player.