For me, each game is a new challenge, which has to be dealt with rationally and systematically. At that time, every other thought fades into oblivion.

There are some things we do much better than computers, but since most of chess is tactically based they do many things better than humans. And this imbalance remains. I no longer have any issues. It's bit like asking an astronomer, does he mind that a telescope does all the work. He is used to it. It is just an incredible tool that you can use.

Things like the financial markets - a proper grounding in mathematics could help the common man. I believe that if people are more familiar with mathematical concepts... it can help deal with modern life, which is increasingly complex.

Grandmasters decline with age. That's a given. There is nothing special about the age of 40, but age eventually takes its toll. That much is clear. Beyond that it's about how long you can put off the effects and compensate for them. Mistakes will crop in but you try to compensate for them with experience and hard work.

Psychology plays a big part but I always say psychology will only be a differentiator when the players are of equal technical strength.

In 1996, the players at the VSB tournament in Amsterdam sent me a card for my wedding with this dedication, 'Anand congrats on your wedding. You were a great player, now be ready to lose 50 points'.

Carlsen will be ridiculously difficult to play against. (on the 2013 World Championship match)