Rubuta ci gaba ga wannan sakin layi - A 2006 ya yi gasa a gasar Olympics ta Chess
a karon farko. A cikin 2013, Ziska ya sami ƙa'idarsa ta farko da ake buƙata don taken GM a Riga Technical University Open 2013. A wannan gasar a Riga, ya lashe gasar blitz (Tournament D) tare da ci 9.5/11 maki.