A
dissection puzzle, also called a
transformation puzzle or
Richter Puzzle, is a
tiling puzzle where a set of pieces can be assembled in different ways to produce two or more distinct
geometric shapes. The creation of new dissection puzzles is also considered to be a type of dissection puzzle. Puzzles may include various restraints, such as
hinged pieces, pieces that can fold, or pieces that can twist. Creators of new dissection puzzles emphasize using a minimum number of pieces, or creating novel situations, such as ensuring that every piece connects to another with a hinge.