TORONTO From fleeing persecution to starting a new life in the U.S., young Tani Adewumi’s immigrant journey was mired with adversity, mirroring the refugee experience of so many who land in North America. But picking up chess just four years ago ended up becoming a transformational move that has helped change everything for his family. And now, at only 10 years old, Tani just became a U.S. national chess master. The Nigerian refugee’s remarkable rise comes two years after he gained worldwide attention for winning the New York State chess championship while he and his family were living in a homeless shelter.