Shutter Puzzle Box Playing Cards puzzle makers and magicians to

puzzle makers and magicians to study the mysteries of the universe

Close inspection reveals that each of the trefoils is marked with a unique arrangement of double-sided grooves

Designed by master puzzle inventor

Legend has it that Winston Churchill and Niels Bohr both carried one in their pockets

Shutter Puzzle Box Playing Cards puzzle makers and magicians toWe discovered this beautiful puzzle while traveling through the mountains of Hakone, Japan. We were already impressed with the seven exotic kinds of wood used in the construction but when we saw the top slide open, our jaws dropped. The rotating mechanism reminded us of a camera shutter or a blooming flower. Turns out, the designer, Hiroshi Iwahara, was inspired by robot anime and the spiraling metal doors that led to a secret base. If you decide to