<prompt> Nikola Sedlak akazvarwa musi wa13 Zvita 1983 mutambi wechess wekuSerbia uyo akabata mazita eGrandmaster GM 2003, weSerbian Chess Championship mukundi 2010, Chess Olympiad munhu akahwina menduru yegoridhe 2014  <response>: , mukundi weEU Individual Open Chess Championship 2007. 