Enormous self-belief, intuition, the ability to take a risk at a critical moment and go in for a very dangerous play with counter-chances for the opponent - it is precisely these qualities that distinguish great players.

We can't attribute a long history of democratic traditions to Japan, either, but today Japan boasts a fully-fledged democracy in which governments change according to democratic procedures. It's no coincidence that the Taiwanese, Japanese, and South Korean economies are among the most innovative in Asia.

I'm not saying that George W. Bush did everything right. But even if you take a skeptical view of his Iraq war, [Barack] Obama made the more serious error of withdrawing his troops from Iraq early.

[Vladimir] Putin is more of a poker player. In poker, unlike chess, you can effectively compensate for a very weak hand by bluffing. There are fixed rules in chess, and no one knows how the game will end. Things are currently the other way around in Putin's realm. But it won't stay that way forever.

Recognise that the free world is at war with Putin, and America is the leader of the free world and should build the coalition against him. It is similar to what Harry Truman did in the Forties. They have to oppose the threat that comes from Putin and other dictators.

His teaching became a turning point in chess history: it was from Steinitz that the era of modern chess began. The contribution of the first world champion to its development is comparable with the great scientific discoveries of the 19th century.

All experiments that are related to the games when you have humans versus machines in the games - whether it's chess or "Go" or any other game - machines will prevail not because they can solve the game. Chess is mathematically unsolvable. But at the end of the day, the machine doesn't have to solve the game. The machine has to win the game. And to win the game, it just has to make fewer mistakes than humans. Which is not that difficult since humans are humans and vulnerable, and we don't have the same steady hand as the computer.