Mumbai, Sept. 17 -- In competitive sport, athletes frequently look for ways to evolve and reinvent. Siddhant Nath Jha took it several notches further. Once a budding chess player who gave up the sport briefly in Class 9 to focus on his academics, Jha decided to get back to the board, this time while donning boxing gloves. Enter, chess boxing. Just over a year after taking up the fusion sport, the 20-year-old is set to compete in the seventh edition of Chess Boxing World Championship in Loznica, Serbia from September 23. "It is a sport that tests both the brain and brawn," Jha, who started training for boxing specifically for the hybrid sport, said to HT. Chess boxing, which combines two traditional sports, was invented in the 1970s in the U...