This item is composed of three boxes. Usually, each boxis locked. When any two boxes face each other, the box which lost theRock-Paper-Scissors game will be unlocked. In the device, several magnetsare used. It was designed by arranging the directions of the magnet well.
This work was produced by Karakuri Creation Group’s craftsmen, from a selected idea of “8th Karakuri Puzzle Idea Contest”.

Original idea by Satoshi Moritani
Hand-crafted by Hiroshi Iwahara (Karakuri Creation Group)