Genna Sosonko (1943) was born in Leningrad, where he was a leading chess trainer. Following his emigration from the Soviet Union in 1972, he settled in The Netherlands. He won numerous tournaments, including Wijk aan Zee in 1977 (with Geller) and 1981 (with Timman) and an individual gold medal at the Olympiad in Haifa 1976. After his active career, Sosonko discovered a passion for writing.