Mikhail_Markovich_Umansky
Mikhail Markovich Umansky (Russian: Михаил Маркович Уманский; January 21, 1952 – December 17, 2010) was a Russian chess grandmaster of correspondence chess, who was the 13th ICCF World Champion in correspondence chess between 1989 and 1998. He was also USSR Correspondence Champion in 1978.[1][2]