Yakov Estrin
Yakov Borisovich Estrin was a Russian chess player, chess theoretician, writer, and World [Correspondence Chess Champion] who held the chess titles of International Master and International Correspondence Chess Grandmaster.
Chess biography
After a brief foray into play, he turned to correspondence chess in the early 1960s with immediate success. He became an International Correspondence Chess Grandmaster in 1966, and would go on to compete in the final of the World Correspondence Championship five times. He is best known for being the seventh ICCF World Champion, 1972–1976.For over-the-board play, he was awarded the International Master title in 1975.
Estrin wrote several chess books and was an authority on the Two Knights Defense. His game with Hans Berliner in which Berliner played the Two Knights Defense and defeated Estrin is one of the most famous and important games in correspondence chess. During the Soviet Era, Estrin was one of the very few chess Authors/editors that were able to publish books in the West through direct contact with the Western Publishers.
Books
The Two Knights' Defence by Yakov Estrin, Chess Ltd.; English edition. The Two Knights' Defence by Yakov Estrin, B.T.Batsford Ltd...Three Double King Pawn Openings by Yakov Estrin, Chess Enterprises; first edition. Gambits by Yakov B. Estrin, Chess Enterprises. The United States Correspondence Chess Championship by Yakov Estrin, Correspondence Chess League of America Wilkes-Barre Variation, Two Knights Defense by Yakov Estrin, Chess Enterprises. Comprehensive Chess Openings, by Yakov Estrin and Vasily Panov, in three volumes, Pergamon, 1980. малая дебютная знциклопедия, by Yakov Estrin, иэдательство физкультура и спорт, 1985.- Theorie und Praxis des Zweispringer-Spiels by J Estrin, Walter Rau Verlag. German edition..