Any experienced player knows how a change in the character of the play influences your psychological mood.

Kortchnoi's heritage is many-faceted - over the decades he has several times corrected and changed his style. But the main thing has invariably remained his search for chess truth.

By this measure (on the gap between Fischer & his contemporaries), I consider him the greatest world champion

There are fixed rules in chess, and no one knows how the game will end.

I don't have enough information, and enough courage, to come up with a definite version of events. And I think it is too dangerous for me to do so.

It could truly be the case that Vladimir Putin has miscalculated in the long term with his adventure in Syria.

The only successor to President Putin is President Putin himself and we could of course dream about President Putin stepping down voluntarily and picking out successor which would be probably as bad as him.