Even when the time control has been reached, there is one situation where you want to act as if it has not: when your position is absolutely lost.
Edmar MednisOnly play into a variation in which your opponent is strong if you have your own personal novelty ready!
Edmar MednisUnless a player has an 'understanding chess' rating of at least 2400, the amount of significant knowledge that he can impart on others is limited.
Edmar MednisYou must be able to handle a variety of move orders during the first 5-6 moves - otherwise you'll find yourself 'tricked' time and time again.
Edmar MednisBobby Fischer started off each game with a great advantage: after the opening he had used less time than his opponent and thus had more time available later on. The major reason why he never had serious time pressure was that his rapid opening play simply left sufficient time for the middlegame.
Edmar Mednis