Looks pretty interesting. The great and former champion Garry Kasparov ( @Kasparov63 ) is providing commentary from the event, happening in India, in Chennai. http://chennai2013.fide.com/ is one site but looks like there are multiple. Current world championship Viswanathan Anand (India) is taking on #1 ranked in the world challenger Magnus Carlson from Norway. From what I can tell, they are in a draw, currently, after three games.