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.

I have no idea how long Putin will last. The good news is, Putin doesn't know either. It will be sudden and it won't be peaceful. He has burned his bridges.

Weaknesses of character are normally shown in a game of chess.

When I was on an American show in 2015, I tried to talk about the threat Vladimir Putin posed to the free world. The interviewer said, "Wake me up when he takes over Poland." We heard something similar from years ago and we ended up with World War Two. Putin decided to skip Poland and went straight to Wisconsin. Putin is at war, a hybrid war, with the free world. His domestic propaganda is based entirely on a strong man challenging the free world. When the demonstrations around Russia began, the harsh response was because it was more important to show strength.

When I was preparing for one term's work in the Botvinnik school I had to spend a lot of time on king and pawn endings. So when I came to a tricky position in my own games I knew the winning method.

Perfectly correct chess exists only in theory.

It didn't take long to recognise the shortcomings of the Soviet regime and to see the values of the free world.