Learning from our mistakes is critical for improving, but even I don't have patience for ranking my regrets. Regret is a negative emotion that inhibits the optimism required to take on new challenges. You risk living in an alternative universe, where if only you had done this or that differently, things would be better. That's a poor substitute for making your actual life better, or improving the lives of others. Regret briefly, analyze and understand, and then move on, improving the only life you have.

Results show that just one year of chess tuition will improve a student's learning abilities, concentration, application, sense of logic, self-discipline, respect, behavior and the ability to take responsibility for his/her own actions.

I started playing chess when I was five years old. I learned the moves from my mother, then worked with my father - and later trainers. My style became very technical. I sacrificed a lot of things. I was always hunting for the king, for the mate. I'd forget about my other pieces.

Vladimir Putin is the bigger danger than Donald Trump because Trump can be dealt with within American democracy. There is an independent judiciary. He cannot overrule American courts. He will have to play by some rules. He will do damage certainly, but to do real damage I think he is too weak. Putin is aggressive wherever he can be. In Europe, in Germany, Putin will not stop.

The Kremlin is constantly changing the rules of the game to suit its purposes. We are not playing chess, we're playing roulette.

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.

Do as little as necessary to appear to be doing something without actually committing to a cause or course of action.