Pedzisa mutsara unotevera: Mumakwikwi eWorld Chess Championship, Portisch akatamba mumakwikwi ose eInterzonal kubva muna 1962 kusvika muna 1993, gumi nemaviri akazara. Akakwanisa kupinda muchikamu chinotevera, Mutambo weVanoda Kukwikwidza, kasere: muna 1966, 1969, 1975, 1978, 1981, 1984, 1987 uye
1990 cycles; nemigumisiro yake yakanakisisa paakasvika kuCandidates semi-finals muna 1977 na1980.