Ridhaan Karthik S.(born on February 5, 2018) of Madurai, Tamil Nadu, is appreciated for arranging the flags of 40 countries on the world map puzzle; identifying ten colours, 16 fruits, 14 vegetables, nine birds, 20 animals, eight sea animals, seven insects, eleven food items, 15 vehicles, eleven body parts, national emblems of 40 countries, 15 states of India; and reciting the English alphabet with their corresponding words, at the tender age of 2 years and 8 months, as confirmed on November 3, 2020.