Kammala jumla mai zuwa: Nshan ya fara dambe a Armenia a shekarar 1976. Ya fara dambe a karkashin Tarayyar Soviet. Munchyan ya lashe lambar zinare a gasar
1987 Gasar Zakarun Turai ta 'Yan Dandatsa. Bayan faduwar Tarayyar a 1991, Munchyan ya fara wakiltar asalinsa Armenia. Ya lashe lambar zinare a gasar zakarun duniya ta 1993 da kuma lambar zinare a gasar cin kofin duniya ta 1994. Shi ne dan dambe na farko daga Jamhuriyar Armeniya mai zaman kanta da ya lashe lambar yabo a kowane gasa.