French grandmaster Marc’Andria Maurizzi (pictured) is the only player with a perfect 4/4 score in the open section of the World Junior Championships taking place in Mexico City. In round 4, Maurizzi got the better of Andy Woodward, an IM from the United States who came from beating top seed Hans Niemann in the previous round. Meanwhile, in the women’s section, Armenian WIM Maryam Mkrtchyan is the sole leader with 4 points to her name. | Photo: David Llada