India, Dec. 30 -- Top Indian Grandmaster Arjun Erigaisi on Monday defeated World Number 1 Magnus Carlsen with the black pieces in the ongoing World Blitz Championship. The 22-year-old relied on his quick calculations to outplay the defending champion in Round 9 of the high-stakes tournament. He ended the day with 10 points out of 13 games, sharing the lead with France's Maxime Vachier-Lagrave and US's Fabiano Caruana. The blitz leg will feature a total of 19 rounds, after which the top four players will qualify for the knockout stage on Tuesday.P13...