Keeping Your Opponent Helpless
Seirawan Strategy Example #1
Winning Chess Strategies, Diagram 13, p38
In this example, Black is unable to make any attempt to dig himself out of his current predicament, as White uses his own Pieces strategically well to make sure Black's Pieces are all tied up trying to defend one another.
If Black were able to do anything to challenge White's dominance, Seirawan suggests trading some of his "inactive pieces" for White's "active ones" (e.g. exchange Bf8 for White's Nd6; and Re8 for White's Rd5, etc.).
But White never let's Black create any tactical threats of his own and, whenever the position allows, White takes advantage of his strategy (of keeping his opponent helpless) to gradually advance his troops up into Black's territory, where they can begin to do some serious damage...