Career
He was the runner-up in the 2011 U18 World Youth Chess Championship and bronze medalist in the 2014 World Junior Chess Championship. In 2010, he placed equal second, seventh on tiebreak in the Chigorin Memorial. This result earned him also the silver medal on second board.
In August of the same year, he finished third in the "Lake Sevan" round-robin tournament in Martuni, Armenia.
In December 2014, he took part in the "Nutcracker Match of the Generations" between Princes (made up of Vladislav Artemiev, Daniil Dubov, Vladimir Fedoseev, Grigoriy Oparin) and Kings (Alexei Dreev, Peter Leko, Alexander Morozevich, Alexei Shirov) teams, held in Moscow with the Scheveningen system. Fedoseev was the top scorer of the event with 11/16.