Career
He played for Palestine from October 2003 to December 2010. In international competition, he has had many tournament victories, including Albena 1977 (and 1979), Plovdiv 1978 (and 1979), Varna 1986, Dieren 1990 (Open Dutch Championship), Beirut 2004 and Imperia 2005. He has a long and illustrious career in team chess, beginning at the World Student Olympiad of 1972, where he represented his country of birth.
At the Olympiad, he represented Bulgaria from 1978 to 1992, taking individual bronze in 1990.
From 1992, there was a break from team chess which lasted twelve years, during which time he switched his place of residence and chess registration to Palestine. Ermenkov earned the International Master (IM) title in 1974 and the General Motors title in 1977.