Eugene Perelshteyn (born 1980) is a chess grandmaster and author that learned to play chess at the age of 7 from his father, who was a professional chess coach. One of his first major victories was winning the U.S. Junior Closed Championship in 2000. He then earned the International Master title in 2001 and the Grandmaster title in 2006 In 2001, Perelsteyn was awarded the Samford Chess Fellowship by the US Chess Trust. He was also the winner of the tournament "The Spice Cup" in 2007, tied for first in the B group at that tournament with 6 points in 2009. Perelshteyn has also placed 2nd in the Canadian Open Championship (2012) and tied for first in the Golden State Open (2016).
He is co-author of Chess Openings for Black, Explained: A Complete Repertoire by Lev Alburt, Roman Dzindzichashvili and Eugene Perelshteyn and Chess Openings for White, Explained: Winning with 1.e4, by Lev Alburt, Roman Dzindzichashvili and Eugene Perelshteyn. He has since converted his book into a website, ChessOpeningsExplained.com, in which he shares his knowledge of the Hyper-Accelerated Sicilian Dragon. In August 2015, Perelshteyn developed the Android application, Chess Genie, which offers tactical exercises to its users. Most recently, Perelshteyn finished 4th in the Reykjavik Open, scoring 6.5/9 in 2017.