Sometimes the hardest thing to do in a pressure situation is to allow the tension to persist. The temptation is to make a decision, any decision, even if it is an inferior choice.

Revenge for a terror attack is ideal for Putin's model. His propaganda machine will be filled with scenes of crash victims if [Vladimir] Putin sees the need for a larger war to stoke his domestic support again as the Russian economy teeters.

The ability to work hard for days on end without losing focus is a talent. The ability to keep absorbing new information after many hours of study is a talent.

It's interesting that the greatest minds of computer science, the founding fathers, like Alan Turing and Claude Shannon and Norbert Wiener, they all looked at chess as the ultimate test. So they thought, "Oh, if a machine can play chess, and beat strong players, set aside a world champion, that would be the sign of a dawn of the AI era." With all due respect, they were wrong.

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.

Chess strength in general and chess strength in a specific match are by no means one and the same thing.

The situation in the [North Caucasus ] region can easily get out of control if the capital inflow is interrupted. It is apparent, even when leaving democratic institutions and values aside for a moment, that [Vladimir] Putin's regime has led the country down a blind alley. Our task is to usher in a shift of paradigms, a new foundation.