Life In 19x19

Early European Championship Systems

1957 to 1959 unclear

1960 7 player round robin
1961 6 player round robin
1962 8 player round robin (2 americans played)
1963 8 player round robin
1964 9 player round robin
1965 9 player round robin
1966 6 player double round robin
1967 8 player round robin
1968 10 player round robin
1969 10 player round robin

1970 7 player round robin
1971 7 player round robin
1972 8 player round robin
1973 5 player double round robin
1974 9 player round robin
1975 12 player 8 round Swiss
1976 9 player round robin
1977 11 player round robin
1978 10 player round robin
1979 20 player 9 round Swiss

1980 24 player 9 round Swiss
1981 24 player 9 round Swiss
1982 16 player 9 round Swiss
1983 some sort of 9 round Swiss in which Asian players played a few rounds
1984 Seems to be a McMahon, Asian players fully taking part

Thanks! On which sources does this rely? How have you derived it from the data? Were there any ambiguities in identifying the systems besides those you already mentioned?

Do you also boycott the official EGF website incase there is a virus on it?