The three rounds for Anand have been contrasting so far. It was s sedate start with an easy draw as white against Levon Aronian of Armenia and then a kind of moral victory when Anand gave away nothing to his world championship challenger Magnus Carlsen of Norway and drew again.
The third-round win against Topalov is sure to find its way in the history books of the future as Anand played one of his best games in recent times.
With his 100 per cent score, Karjakin is ahead of Anand and Aronian by a full point but it's still early days. In high level tournaments like these, well begun remains half done but the other half is always tougher.
Two of Karjakin's three wins have come against Wang Hao of China and Jon Ludvig Hammer of Norway who both are the last two placed contestants right now.