A Jacob'sladder (also magic tablets, Chinese blocks, and klick-klack toy) is a folk toy consisting of blocks of wood held together by strings or ribbons
multi-jointed wooden toy also known as a Jacob'sladder, which is itself named after the ladder to heaven witnessed by the biblical patriarch Jacob (Genesis 28:12)
other connections restrict the movement) in a manner similar to a Jacob'sladdertoy. The front side of the puzzle shows, in the initial state, three separate