LONDON, ENGLAND - DECEMBER 04: World chess champion Magnus Carlsen smiles between moves as he plays Maxime Vachier-Lagrave in an opening game at the London Chess Classic tournament on December 4, 2015 in London, England. As well as a British knockout championship, the tournament will see nine super-grandmasters compete in the final leg of the Grand Chess Tour. (Photo by Carl Court/Getty Images)
