Go through detailed variations in your own time, think in a general way about the position in the opponent's time and you will soon find that you get into time trouble less often, that your games have more content to them, and that their general standard rises.
Alexander KotovWhen you have finished analyzing all the variations and gone along all the branches of the tree of analysis you must first of all write the move down on your score sheet, before you play it.
Alexander KotovThere 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.
Alexander KotovAll candidate moves should be identified at once and listed in one's head. This job cannot be done piecemeal, by first examining one move and then look at another.
Alexander Kotov