What is Classical Bishop Sacrifice?

The Classical Bishop Sacrifice is a common tactical motif in chess where a player sacrifices their bishop for strategic advantage. Typically, it involves the bishop being offered on h7 (or h2 when Black is orchestrating the sacrifice) to disrupt the enemy king's pawn-cover and facilitate a king-side attack. The sacrifice is often part of a larger combination and should result in the tear down of enemy's defence, leading to a swift mating attack, gaining material, or obtaining a strong positional advantage.