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.

Experience and the constant analysis of the most varied positions builds up a store of knowledge in a player's mind enabling him often at a glance to assess this or that position.

I can remember a case where Capablanca worked out an impressive combination, but then chose to make a simple move in answer to which his opponent resigned at once!

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

There is no doubt that the reason for my awful oversight was over-confidence that sapped my sense of danger. So that is where to look for the cause of bad blunders - in the exulting feeling of self-congratulation.

It is better to follow out a plan consistently even if it isn't the best one than to play without a plan at all. The worst thing is to wander about aimlessly.

Time trouble is blunder time.