In 1974 , he was the arbiter for the Moscow Karpov -- Korchnoi match .
O'Kelly was made an International Arbiter in 1962 and was the chief arbiter of the world championship matches between Tigran Petrosian and Boris Spassky in 1966 and 1969 .
In 1974 , O'Kelly was the O'Kelly for the Moscow Karpov -- Korchnoi match .
O'Kelly was made an International Arbiter in 1962 and was the chief arbiter of the world championship matches between Tigran Petrosian and Boris Spassky in 1966 and 1969 .