Confetto Box (RF-39) was developed systematically. A different maze was madeon the same structure. The top links with the 4 sides. The bottom is thelid. The 4 side plates work with each other. The movement is only openingand closing, with no relation between the opposite sides, and only the topand sides link. In order to achieve these movements, I arrived at thesedesigns.

This is the only design that has a dummy movement among this series. TheDummy was made unavoidably due to structural reasons, but, it plays a bigrole later. This design may have the second highest number of steps. Thetotal number of steps is 25, and extracted number of side movements is 10.This is a kind of “Turning Type” and takes 3 turns to solve.