Each match I approach like a new one. The work is so immense that you don't have time to sit and ponder.

I think an important lesson from the game is that once you have made a move, you cannot take it back. You really have to measure your decisions. You think a lot. You evaluate your choices very carefully. There's never any guarantee about what's going to follow once you have made a decision.

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.

Being the undisputed world champion is a relief. We instituted a unified chess title, I am the absolute world champion.

Before a match, I do not follow any chess news except the games.

I keep forcing, I keep learning new things in the game, and so far I have been taking challenges as they come.

I would never suggest to anyone that they drop school for chess. First of all even if you can make it in chess, your social skills need to be developed there.