Mumbai, Dec. 30 -- As a teenager, Koneru Humpy was a chess prodigy who took the world by storm. She won three age-group crowns in the late 1990s - girls' U-10, U-12 and U-14 - and was just 15 when she got the Grandmaster tag, joining the elite of world chess. Five years later, in 2007, when she breached the 2,600 mark in the elo ratings (points that denote a player's strength) Humpy was only the second woman player to achieve that level after Judit Polgar....