World Chess Championship 1963 - Zonal Tournaments

Zonal Tournaments

FIDE now had more than fifty member Federations that were divided into nine zones: 1–Western Europe, 2–Central Europe, 3–Eastern Europe, 4–USSR, 5–USA, 6–Canada, 7–Central America, 8–South America, and 9–Asia. Previous championship cycles had used only eight zones. Each zone was allocated from one to four qualifiers based on the relative strengths of its leading players.