Career
In 2008 he tied for 1st–8th with Vugar Gashimov, David Arutinian, Yuriy Kryvoruchko, Konstantin Chernyshov, Andrei Deviatkin, Vasilios Kotronias and Erwin L"Ami in the Cappelle-la-Grande Open tournament. In 2009 he tied for 1st–2nd with Murtas Kazhgaleyev in the Paris City Chess Championship and came first at Nantes. Fedorchuk tied for 1st–8th with Sanan Sjugirov, Parimarjan Negi, Maxim Rodshtein, Eric Hansen, Vlad-Cristian Jianu, Alexei Fedorov and Yuri Vovk in the 2013 Cappelle-la-Grande Open.
In February 2014, Fedorchuk tied for first with Baadur Jobava and Mikhailo Oleksienko, placing second on tiebreak, in the David Bronstein Memorial in Minsk.
Fedorchuk played for the Ukrainian team on the reserve board in the 2013 European Team Chess Championship. Sergey A Fedorchuk vs Rainer Buhmann, WCh U18 Boys 1999, French Defense: Tarrasch Variation.
(C09), 1-0
Sergey A Fedorchuk vs Ivan Sokolov, World Cup 2009, Sicilian Defense: Nimzowitsch. Closed Variation (B29), 1-0.
