Alexander Karpov is a prominent Russian chess player, born on May 23, 1951. He became the World Chess Champion in 1975 and held the title until 1985. Karpov is known for his strategic and positional style of play, which has earned him numerous tournament victories throughout his career. In addition to his championship titles, Karpov has contributed to chess through writing and promoting the game globally. He has authored several books on chess strategy and has been involved in various chess organizations, including the International Chess Federation (FIDE), helping to popularize the sport.