Puzzle Boxes / Take Apart Puzzles
Boxes called secret boxes or puzzle boxes with secret opening mechanisms are included in this category. These containers are locked by opening mechanisms that reveal a hollow space on opening. There are a vast variety of opening mechanisms, such as concealed panels, inclination mechanisms, magnetic locks, movable pins which need to be rotated into a certain position, etc. This category also includes puzzles where the primary objective is to take the puzzle apart.