Georgy Borisenko

Georgy Konstantinovich Borisenko (May 25, 1922 — December 3, 2012) was a Soviet correspondence chess grandmaster and chess theoretician. Among the players he trained were Nona Gaprindashvili, Valentina Borisenko (who was also his wife), and Timur Gareyev. In 1973, David Bronstein described Borisenko as "one of our greatest theoretical experts." In Russia, the Breyer Variation of the Ruy Lopez is known as the "Borisenko-Furman" variation because Borisenko and Semyon Furman were central in bringing it into use in the 1950s. Another line of the Closed Ruy Lopez is also named after him; specifically, the line in the Chigorin Variation which goes 9...Na5 10.Bc2 c5 11.d4 Nc6. His wife Valentina Borisenko was also a chess player and held a Candidate Master title.