GM Marat Dzhumaev registers for the Thailand Open April 8, 2010April 27, 2011 Peter News, Tournaments Grandmaster Marat Dzhumaev GM Marat Dzhumaev, rated 2525, has joined the growing list of international grandmasters vying for the Thailand Open crown. Dzhumaev has represented Uzbekistan in two Olympiads and the Word Team Chess Championships.