<prompt> Aitken dә sa saa 10 lan kәnәnganzә lan chess fәlezәna. Shima kampiyon Scotlandbe suro saa 1935, 1952, 1953, 1955, 1956, 1957, 1958, 1960, 1961 kuru 1965, darenzǝ kǝla PM Jamieson ben. Shiye kuru London Champion suro saa 1950 lan. Suro saa 1959 lan shiye jaza ngǝla sǝdǝna suro British Championshipben, na kǝn yakkǝmibe lan jaza kǝn tilomibe sǝdin. Aitken shima wakil Scotlandbe ro olympiad chessbe diyau lan. Stockholm 1937 lan biske kura dә sәdin lan, 32.4 bas sәdәna amma shiye GM Swedenye Gideon Ståhlberg-a kuru GM Americaye Samuel Reshevsky-a letәgәna. Shiye biske kǝn indimibe Munich 1958 kuru Tel Aviv 1964 lan, 67.6 kuru 28.1 ro gozǝna. Aitken dǝ biske kǝn arakkǝmi Skopje 1972 lan biske kǝn arakkǝmi  <response>: 38.9 kәla kәlanzәben. 