 The first non-American school to host was Canada's McGill University at Montreal in 1969, and McGill also won the event that year.From 1968 to 1971, interest doubled again, to nearly 50 teams per year.During the 1960s and 1970s, the level of participation in the Pan-Am grew about tenfold, as one of the effects of Bobby Fischer's chess career, culminating in the World Chess Championship.