After a series of tense draws over the last few weeks, reigning champion Magnus Carlsen stepped up to win 3-0 in the deciding tiebreakers on Wednesday in London. The Norwegian has held the world title since 2013. After 13 games and nearly 50 hours of play, the deadlock at the 2018 World Chess Championship was finally broken when Magnus Carlsen ground out a victory in the opening tiebreaker, forcing challenger Fabiano Caruana to resign after 55 moves. A little over two hours and two wins later, Carlsen was able to shake hands on a fourth world title, one that had...