Mysuru: Nivaan Raghavendra, a 9th std. student of St. Joseph’s Central School, Yelwal, has won the  U-17 Tri-Memorial Chess Tournament organised by The Learning Curve International School in association with Jyothi Umesh Chess Academy (JUCA) in city recently.  Nivaan secured 5 points out of 5 rounds in the U-17 category to lift the trophy.