Timeline of Tigran Petrosian, the Iron Tigran — World Champion 1963–1969.
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Dashed left edge = started before this timeline ·
Dashed right edge = still ongoing
Tigran Petrosian 1
1963 – 1969Petrosian World Champion reignIron Tigran — impossible to beatTigran Petrosian defeated Botvinnik in 1963 and held the title until 1969. His prophylactic defensive style made him extraordinarily difficult to defeat and he went years without losing a single game.