Milko Georgiev Bobotsov

https://en.wikipedia.org/wiki/Milko_Bobotsov

Milko Georgiev Bobotsov (Bulgarian: Милко Георгиев Бобоцов; 30 October 1931, in Plovdiv – 3 April 2000, in Sofia, Bulgaria[1]) was the first Bulgarian to attain the chess title of Grandmaster, achieving this title in 1961. Prior to gaining the title he won the Bulgarian national championship in 1958. Probably his best result was equal second at the powerful Alekhine Memorial tournament in Moscow in 1967. Other successes included first or shared first places at Varna 1957, Pécs (Asztalos Memorial) 1964 and Sarajevo, Bosna 1971.