Isaak Efremovich Boleslavsky (1919-1977) was a Soviet International Grandmaster (1950) and journalist. He was born June 19, 1919 in Zolotonosha, in the Ukraine. He taught himself chess at the age of nine. In 1936, he took 3rd in the All-Union Junior Chess Championship, held in Leningrad. In 1938,1939 and 1940, he won the Ukraine Championship. In 1939, he took 5th-6th in the 12th USSR Championship. During World Wat II, he was freed from conscription because of poor eyesight. In 1942, he took 2nd in the Moscow Open. In 1943, he married Nina. In 1944, he took 3rd in the 13th USSR Championship. They had two children, Tatiana, born in 1946, and Stanislav, born in 1955. In 1945, he was awarded the title of Soviet Grandmaster. In 1945, he took 2nd in the 14th USSR Championship. In 1945, he played om 3rd board in the USSR vs. USA radio match. He drew Reuben Fine the first game and defeated him the second game. In 1946, he won the RSFSR Championship. In 1947, he took 2nd in the 15th USSR Championship. In 1948, at the Stockholm interzonal, he took 3rd place. He was a Candidate at Budapest in 1950 (tied for first, but losing to Bronstein in the playoff) and at Zurich in 1953 (10th-11th). He was Bronstein's second in 1951. In 1952, he scored 7 out of 8 in the Helsinki Olympiad. He was Smyslov’s second in 1956. He was Petrosian’s second in 1963, 1966, and 1969. He played in 11 USSR Championships. His daughter, Tatiana (born in 1946), married Grandmaster David Bronstein, who was 16 years older than her. Boleslavsky died at the age of 58.