I like to keep myself physically and mentally fit before any important match. I usually take a short nap just before the game and do not practice immediately before the tournament.

When I started out playing chess as a kid I thought I should be world champion. As a kid you have no idea what that means and you only sort of picture it. It is hard to imagine that I waited all those years and it happened in a late stage of my career.

In chess, knowledge is a very transient thing. It changes so fast that even a single mouse-slip sometimes changes the evaluation.

The broader the chess player you are, the easier it is to be competitive, and the same seems to be true of mathematics - if you can find links between different branches of mathematics, it can help you resolve problems. In both mathematics and chess, you study existing theory and use that to go forward.

When there's an important tournament going on, I try and stay in a bubble. It's easy that way because then you don't have to worry about anything else.

I don't know how many calories an average chess player burns per game, but it often exceeds that of a player in ball games. It is not only the chess as such: You need to be fit and undergo complicated preparation.

Just before a game, I try to keep a clear mind so that I can focus better. I'm the kind of person who plays fast and relies a lot on intuition, so being at peace with myself is vital. Saying my daily prayers helps me achieve this heightened state of mind.