Petrosian's Retreat Game

• Lev Solomonovich Aronin (Russian: Лев Соломонович Аронин; 20 July 1920, Kuibyshev – 4 October 1982, Moscow) was a Soviet International Master of chess. He was a meteorologist by profession. 
• He played in eight USSR Chess Championships, which were the strongest tournaments in the world during his era, and placed as high as a tie for 2nd–4th places in 1950 at Moscow.
• He was the youngest of three brothers, with Gregory (1913–2007) being the eldest, and Efim (1915–1989) being the second.
• Gregory taught him chess at the age of 8, and he could recall that at the age of 14, Lev beat him and Efim simultaneously without looking at the boards while they were making the moves over the chessboards for Lev and themselves. 
• Gregory later told:

"He was lying on the couch at another room and shouted the moves to us, for each board, and we were making them over the boards and shouting back our respective moves. It was amazing. Both games lasted for no longer than around 30 moves each, which is not trivial given both me and Efim were quite strong chess players."

• Tigran Vartanovich Petrosian (June 17, 1929 – August 13, 1984) was a Soviet Armenian Grandmaster, and World Chess Champion from 1963 to 1969.
• He was nicknamed "Iron Tigran" due to his almost impenetrable defensive playing style, which emphasized safety above all else.
• Petrosian is credited with popularizing chess in Armenia.
• Petrosian was a Candidate for the World Chess Championship on eight occasions (1953, 1956, 1959, 1962, 1971, 1974, 1977 and 1980).
• He won the World Championship in 1963 (against Mikhail Botvinnik), successfully defended it in 1966 (against Boris Spassky), and lost it to Spassky in 1969. Thus he was the defending World Champion or a World Championship Candidate in ten consecutive three-year cycles. He won the Soviet Championship four times (1959, 1961, 1969, and 1975).