Divya Delhi: The youngest player to beat a classical chess world champion, Abhimanyu Mishra, made history. A 16-year-old US wonder upset world champion D Gukesh in Round 5 of the FIDE Grand Swiss.Mishra continued his record as the youngest grandmaster defeater. After Gukesh risked advancing his g-pawn to g4 on move 12 in an Italian Opening, Mishra startled the champion.Mishra bravely sacrificed a piece in the early middle game, putting Gukesh under strain. The Indian GM showed guts and held up early on, but the board's complexity required almost flawless play into the endgame.Mishra won a tense, high-class 61-move battle.Even after the historic win, Mishra said he wasn't content with his play and wanted to improve.This win shook the chess world and proved Mishra is one of the brightest emerging possibilities.