The first international tournament that Hasanov refereed took place in
Baku in 1964. He also refereed sports contest between the
USSR nations. Hasanov was awarded the title of
International Arbiter by
FIDE in 1980. He has been in charge of World and European Championships,
Olympiads,
World Team Chess Championship. He also has been refereeing the tournament in
Linaress for twenty years and was the chief arbiter of the first FIDE Grand Prix tournament in
Baku. He was a member of the reconstituted Appeal Committee during the
World Chess Championship 2006. ==Author and presenter==