TNT Bomb

Buildings need to come down, and you've got five kinds of charges to do it with, each behaving a little differently once it goes off. The puzzle is in the placement — where you set a bomb, and which type you pick, decides how the structure collapses and whether you clear the level in one go or leave awkward chunks standing. It rewards some trial and error, since a few interactions between charge types aren't obvious until you see them happen.