Ku dhameystir weedha soo socota: Sanadkii 1946, isagoo 21 jir ah, Yanofsky wuxuu galay tartankii ugu horeeyay ee heerka sare ah ee dagaalka kadib, ee Groningen, wuxuuna ka adkaaday horyaalkii Soviet-ka iyo tartankii uu ku guuleystay Mikhail Botvinnik, isagoo ku guuleystay abaalmarinta dhalaalka. Labadii sano ee ku xigtay, wuxuu ciyaaray dhowr tartan oo Yurub ah, halkaasoo natiijadiisa ugu fiicnayd ay ahayd kaalinta labaad ee Miguel Najdorf ee Barcelona 1946. Yanofsky wuxuu Canada u matalay Interzonals oo lagu qabtay Saltsjöbaden 1948 iyo Stockholm 1962. Wuxuu ku guuleystay horyaalka Ingiriiska sannadkii 1953. Tartankii shaashadda ee Dallas 1957, Yanofsky wuxuu gaadhay heerkiisii ugu horreeyay ee Grandmaster-ka isagoo ka adkaaday Samuel Reshevsky, Friðrik Ólafsson iyo Larry Evans. Bandhigiisa
Tel Aviv 1964 Olympiad wuxuu ku kasbaday heerkiisa labaad ee Grandmaster, iyo cinwaanka, sidaas darteed wuxuu noqday Grandmasterkii ugu horreeyay ee ka soo jeeda British Commonwealth.