Mezue ahịrịokwu na-esonụ: N'afọ 1946, mgbe ọ dị afọ 21, Yanofsky banyere n'asọmpi mbụ e nwere mgbe a lụchara agha, na Groningen, ma merie onye mmeri Soviet na onye mmeri asọmpi ahụ bụ́ Mikhail Botvinnik, wee nweta ihe nrite nke ịdị nkọ. N'ime afọ abụọ sochirinụ, ọ gbara ọtụtụ asọmpi ndị ọzọ na Europe, ebe nsonaazụ ya kachasị mma bụ ebe nke abụọ n'azụ Miguel Najdorf na Barcelona 1946. Yanofsky nọchitere anya Canada na Interzonals emere na Saltsjöbaden 1948 na Stockholm 1962. O meriri n'asọmpi Briten n'afọ 1953. Na Dallas 1957 chess tournament, Yanofsky nwetara akara ukwu mbụ ya site na mmeri Samuel Reshevsky, Friðrik Ólafsson na Larry Evans. Ihe ngosi ya na
Tel Aviv 1964 Olympiad nyere ya ọkwa nke abụọ ya, na aha ya, wee si otú a bụrụ onye izizi izizi izizi a zụlitere na British Commonwealth.