Whakaotihia te rerenga e whai ake nei: I te tau 1946, i te 21 o ona tau, i uru a Yanofsky ki te whakataetae tuatahi o muri i te pakanga, i Groningen, a ka hinga i te toa Soviet me te toa o te whakataetae Mikhail Botvinnik, ka wini i te utu nui. I roto i nga tau e rua e whai ake nei, i takaro ia i etahi atu huihuinga Pakeha, i reira ko tana hua pai ko te tuarua i muri i a Miguel Najdorf i Barcelona 1946. I tohu a Yanofsky i Kanata i nga Interzonals i tu ki Saltsjöbaden i te 1948 me Stockholm i te 1962. I toa ia i te Whakataetae o Ingarangi i te tau 1953. I te whakataetae taatai Dallas 1957, i tutuki i a Yanofsky tana paerewa rangatira tuatahi me te wikitoria i a Samuel Reshevsky, Friðrik Ólafsson me Larry Evans. Ko tana mahi i te
Ko te Tel Aviv 1964 Olympiad i riro i a ia tana paerewa tuarua o te rangatira nui, me te taitara, na reira ka noho ko ia te rangatira nui tuatahi i whakaarahia i te Commonwealth o Ingarangi.