Since May 2007 he has been identified as an International Master by the World Chess Federation, having first broken through the necessary Elo ratings threshold of 2400 points at a tournament in Prague in May 2004.
His coaches included Holger Borchers, International Master Jakob Meister and Grandmaster Sergey Kalinitschew.
[3] In July 2004 he won with the German under-18 team the European Championship in Belgrade, receiving a gold medal for his 3.5 out of 5 result from the first reserve board.
[5] As a teenager/young player Brener played in six Berlin clubs, most recently with "Schach Verein 'Glück Auf' Rüdersdorf" in the 2.
Since 2013/14 he has played for TuS Makkabi Berlin, for whom at the start of 2018, International Master Brener was the most highly rated of the active players.