If you can play the first ten or fifteen moves in just as many minutes, you can be in a state of bliss for the rest of the game. If, on the other hand, Bronstein thinks for forty minutes about his first move, then time trouble is inevitable.

I soon realized that it is not enough for a master simply to analyse variations scrupulously just like an accountant. He must learn to work out which particular moves he should consider and then examine just as many variations as necessary - no more and no less.

In choosing an opening plan players think most of all of harmonious development for the pieces, but sometimes leave the development of the queen out of their considerations. Yet the Queen is the most valuable and important piece and the whole outcome can depend upon how successfully she plays her role.

Once we have chosen the right formation in the centre we have created opportunities for our pieces and laid the foundation of subsequent victory.

The main thing that develops positional judgement, that perfects it and makes it many-sided, is detailed analytical work, sensible tournament practice, a self-critical attitude to your games and a rooting out of all the defects in your play.

My achievements in the field of chess are the result of immense hard work in studying theory.

You will already have noticed how often Capablanca repeated moves, often returning to positions which he had had before. This is not lack of deciciveness or slowness, but the employment of a basic endgame principle which is 'Do not hurry'.