When you play against an ...

When you play against an experienced opponent who exploits all the defensive resources at his command you sometimes have to walk time and again, along the narrow path of 'the only move'.
 David Bronstein

Quotes from the same author

But whatever you might say and whatever I might say, a machine which can play chess with people is one of the most marvellous wonders of our 20th century!
 David Bronstein
The most powerful weapon in Chess is to have the next move
 David Bronstein
Far from all of the obvious moves that go without saying are correct.
 David Bronstein
Chess is infinite, and one has to make only one ill-considered move, and one's opponent's wildest dreams will become reality.
 David Bronstein