Vassily Ivanchuk of Ukraine defeated 13th seed Anish Giri of the Netherlands in the first game of the quarterfinals of the Chess World Cup here on Tuesday. Second seed Wesley So (USA) was held by Baadur Jobava.
The results (quarterfinals, first game): Wang Hao (Chn) drew with Ding Liren (Chn); Maxime Vachier-Lagrave (Fra) drew with Alexander Grischuk (Rus); Vassily Ivanchuk (Ukr) bt Anish Giri (Ned); So Wesley (USA) drew with Baadur Jobava (Geo); Maxim Rodshtein (Isr) lost to Vladimir Fedoseev (Rus); Peter Svidler (Rus) drew with Bu Xiangzhi (Chn).
Daniil Dubov (Rus) drew with Levon Aronian (Arm).