Yuri Lvovich Averbakh (; 8 February 1922 – 7 May 2022) was a Russian chess grandmaster and author. He was chairman of the USSR Chess Federation from 1973 to 1978. He was the first centenarian FIDE Grandmaster. Despite his eyesight and hearing having worsened, by his 100th birthday he continued to devote time to chess-related activities. Early life Averbakh was born in Kaluga, Russia. His father was German Jewish, and his ancestors were named Auerbach, meaning "meadow brook". His mother was Russian. Both sets of grandparents disapproved of their marriage because his father was likely an atheist and his mother was Eastern Orthodox, as well as the fact that his maternal grandmother died very young, so his mother was expected to look after the family. Averbakh called himself a fatalist. Career Tournament successes His first major success was the first place in the Moscow Championship of 1949, ahead of players including Andor Lilienthal, Yakov Estrin and Vladimir Simagin. He became an international grandmaster in 1952. In 1954 he won the USSR Championship ahead of players including Mark Taimanov, Viktor Korchnoi, Tigran Petrosian, Efim Geller and Salo Flohr. In the 1956 Championship, he came equal first with Taimanov and Boris Spassky in the main event, finishing second after the playoff. Later Averbakh's daughter, Jane, would marry Taimanov. Averbakh's other major tournament victories included Vienna 1961 and Moscow 1962. He qualified for the 1953 Candidates' Tournament (the last stage to determine the challenger to the World Chess Champion), finishing joint tenth of the fifteen participants. He also qualified for the 1958 Interzonal tournament at Portorož, by finishing in fourth place at the 1958 USSR Championship at Riga. At Portorož, he wound up in a tie for seventh through eleventh places, half a point short of advancing to the Candidates' Tournament. He played in the 1993 Maccabiah Games in Israel, coming in fourth. Playing style His solid style was difficult for many pure attackers to overcome, as he wrote: "...Nezhmetdinov, who if he had the attack, could kill anybody, including Tal. But my score against him was something like 8½–½ because I did not give him any possibility for an active game. In such cases he would immediately start to spoil his position because he was looking for complications." He had plus records against the world champions Max Euwe and Tigran Petrosian. Writings Averbakh was also a major endgame study theorist. More than