The Burr Puzzle is a type of interlocking puzzle made from multiple pieces, typically crafted from wood. Its design features notched or angled pieces that fit together to form a three-dimensional shape. The challenge lies in assembling the pieces without forcing them, as they must be arranged in a specific order to achieve the final structure. These puzzles come in various designs and difficulty levels, often categorized by the number of pieces involved. The Burr Puzzle is popular among puzzle enthusiasts and is appreciated for its aesthetic appeal and the mental challenge it provides. It is also related to other types of puzzles, such as the Tangram and Jigsaw Puzzle.