Like Dvoretsky, I think that (all other things being equal), the analytical method of studying chess must give you a colossal advantage over the chess pragmatist, and that there can be no certainty in chess without analysis. I personally acquired these views from my sessions with Mikhail Botvinnik, and they laid the foundations of my chess-playing life.

The Greeks according to official history used letters for hundreds, for tens, and ones.It was extremely complicated. If you talk about Archimedes, you should use Greek letters.

Vladimir Putin is the wealthiest man on the planet, for sure. But this is different to the wealth of a Bill Gates or a Warren Buffett, a Carlos Slim or a Sergey Brin. They stay wealthy whether it is Barack Obama or Donald Trump in power. Putin's wealth depends on him staying in power. It is all about controlling the budget, the hard currency reserves and keeping under his thumb the oligarchs who cannot move their money without his permission. It is something close to a trillion dollars that he can control and move.

Barack Obama took over after Vladimir Putin's first aggression, in Georgia. In 2009, he did the reset policy because they had these stupid ideas about former president Dmitry Medvedev. They thought he would be the leader, not Putin. Everyone played this game with Medvedev as their bet, Berlin, Paris, London, the idea of smoothly transferring to something more acceptable. It was always a charade, a Putin project to solidify his power and come back after four years of nominal occupation of the office by Medvedev.

Chess is a unique battlefield for human minds and computers - human intuition, our creativity, fantasy, our logic, versus the brute force of calculation and a very small portion of accumulated knowledge infused by other human beings. So in chess we can compare these two incompatible things and probably make projections into our future. Is there danger that the human mind will be overshadowed by the power of computers, or we can still survive?

We don't have a choice. A united democratic Eurasian continent welded together by common economic interests is our only hope and contribution to stability in the world. If we fail, I fear that Russia in its present form is in for the most serious of upheavals - the outcome of which is extremely unpredictable.

A grandmaster needs to retain thousands of games in his head, for games are to him what the words of their mother tongue are to ordinary people, or notes or scores to musicians.