The three pieces each have a spiral (vortex) body and two protrusions. When assembled together, each piece is unified into a flat object. In order to undo this complex entanglement it will be necessary to unbind them three dimensionally.
Hanayama cast puzzles are some of the world's finest brain teasers. These high-quality, cast metal puzzles come in six challenging, Mensa-rated levels of difficulty. Hanayama puzzles are recommended for ages 12 and up.