Moscow is simply unwilling to recognize the right of self-determination of nations.

The loss of my childhood was the price for becoming the youngest world champion in history. When you have to fight every day from a young age, your soul can be contaminated. I lost my childhood. I never really had it. Today I have to be careful not to become cruel, because I became a soldier too early.

The handover of power to [Dmitry] Medvedev was rather painless, everybody thought that the waves would calm automatically. By now, it's quite clear that [Vladimir] Putin doesn't want to relinquish the levers of power.

Remember that the machine is there to help you, because at the end of the day, you're not playing freestyle chess, advanced chess, human-plus-machine. If you are playing against other humans, it's about winning the game. The machine will not be assisting you, unless you are cheating of course. And since the machine is not there, you have to make sure that everything you learn from the computer will not badly affect the way you play the real game.

One does not succeed by sticking to convention. When your opponent can easily anticipate every move you make, your strategy deteriorates and becomes commoditized.

Anything that we know how we do, machines will do better. Now, the key element of this phrase is, "We know how we do it." Because we do many things without knowing exactly how we do them. So this is the area where machines are vulnerable, because it still has to learn from some kind of experience. It needs something - at least the rules of the game. You have to bring in something that will help the machine to start learning. It's like square one. If there's nothing there, if you can't explain it, that's a problem.

The stock market and the gridiron and the battlefield aren't as tidy as the chessboard, but in all of them, a single, simple rule holds true: make good decisions and you'll succeed; make bad ones and you'll fail.