KK1
The World Chess Championship 1984 was a match between challenger Garry Kasparov and defending champion Anatoly Karpov for the World Chess Championship title. After 5 months and 48 games, the match was abandoned in controversial circumstances with Karpov leading five wins to three (with 40 draws), and replayed in the World Chess Championship 1985.
Read more about KK1: 1982 Interzonals, 1983/84 Candidates Tournament, 1984/85 Championship Match