Chess continues to advance over time, so the players of the future will inevitably surpass me in the quality of their play, assuming the rules and regulations allow them to play serious chess. But it will likely be a long time before anyone spends 20 consecutive years as number, one as I did.

Rosneft, for instance, was mainly built upon capital stolen from [jailed oligarch Mikhail] Khodorkovsky's company, but the IPO was successful with many Western corporations investing in it. This means that it is extremely difficult to detect these assets in their pure form.

By the time a player becomes a Grandmaster, almost all of his training time is dedicated to work on this first phase. The opening is the only phase that holds out the potential for true creativity and doing something entirely new.

Chess is a unique cognitive nexus, a place where art and science come together in the human mind and are then refined and improved by experience.

This is the essential element that cannot be measured by any analysis or device, and I believe it's at the heart of success in all things: the power of intuition and the ability to harness and use it like a master.

We know that for the last 300 or 400 years, the size of human bodies is growing. Now what happened is that we suddenly, in history, have the backward process. We have these great Greek athletes, we have ultra-powerful Roman soldiers. You look at the size of the Roman soldier who has to carry all this ammunition. You're talking about 300,000 Arnold Schwartzeneggers.

Tactics involve calculations that can tax the human brain, but when you boil them down, they are actually the simplest part of chess and are almost trivial compared to strategy.