He won the Kharkiv city junior championship U20 in 1996 and placed third in the open tournament of Beirut in 1998. For many years an instructor at the Kharkiv chess school, in the first years 2000 he was the coach of Anna Ushenina, who won the Women's World Chess Championship 2012 in Khanty-Mansiysk.
In the years 2015-2016 Tsepotan was an instructor on the internet of Zhou Liran, who became in August 2017, at the age of 9 years, 3 months and 22 days, the youngest ever National Master of the U.S. Chess Federation .. In 2019 Zhou Liran was the winner of the U12 World Youth Chess Championship at Weifang.