Grandmaster Nguyen Ngoc Truong Son (left) wins a gold medal in the men’s stardard chess category while Hoang Thi Bao Tram secures a bronze medal in the women’s group. (Photo: VNA)Quang Ninh (VNA) - Grandmaster (GM) Nguyen Ngoc Truong Son earned the first gold medal for Vietnamese chess on May 15 in the framework of the ongoing 31st Southeast Asian Games (SEA Games 31). He beat 11 rivals to triumph in the men’s standard chess category with seven points after nine matches. On the women’s group, Citra Dewi Ardhiani Anastasia and Sukandar Irine Kharisma of Indonesia took gold and silver medals. Chess players will continue with individual men’s and women’s fast chess events on May 16 and 17.