Indian Grandmaster D Gukesh became the youngest challenger to the world title following his triumph at the prestigious Candidates Chess Tournament in Toronto earlier this week. The 17-year-old is the first Indian after the great Viswanathan Anand to win the Candidates Tournament. Speaking to NDTV, Gukesh's father, Dr Rajinikanth said his decision to quit medicine practice has finally paid off. Rajnikanth, who is a surgeon, had quit his practice to help his son achieve his dreams.