Rubuta ci gaba don wannan sakin layi - A cikin gasar zakarun duniya, Portisch ya taka leda a kowace Interzonal daga 1962 zuwa 1993, goma sha biyu a duka. Ya cancanci zuwa mataki na gaba, Gasar 'Yan takara, sau takwas: a cikin 1966, 1969, 1975, 1978, 1981, 1984, 1987 da 1990
ya yi nasara a lokacin da ya kai ga 'yan takara a 1977 da 1980.