There is nothing wrong with trying to exploit the natural human tendency to become impatient when forced to play a boring position.

When you defend, try not to worry or become upset. Keep your cool and trust your position - it's all you've got.

The business of the endgame is maneuvring to control critical squares, advancing or blockading passed pawns, preparing a breakthrough by the king, or exploiting the subtle superiority of one piece over another.

Errors have nothing to do with luck; they are caused by time pressure, discomfort or unfamiliarilty with a position, distractions, feelings of intimidation, nervous tension, overambition, excessive caution, and dozens of other psychological factors.

There is no doubt that Bronstein's shrewd understanding of chess psychology was crucial to his success. Without it, his impetuous style and technical flaws might have relegated him to a minor career.

In the Soviets' view, chess was not merely an art or a science or even a sport; it was what it had been invented to simulate: war.

Typically, in the last round of open tournaments the level of play is markedly lower, the number of blunders higher.