Visible Drawer Puzzle Box Stationery For this reason

For this reason

A timeless treasure from two of the most inspiring designers in history

but when you click the switch to start scribbling

the solution requires some ingenuity

Visible Drawer Puzzle Box Stationery For this reasonExquisite craftsmanship and clever calculations combine to create two exceedingly difficult puzzle boxes perfect for fans of advanced mathematics. The Ternary Box requires eighteen moves to open and the Quinary Box requires fifty! Please don't ask us to explain the underlying mathematical principles. Designed by the brilliant craftsman Hiroshi Iwahara, both Visible Drawer Puzzle Boxes are made from Walnut, Wenge, Padouk, Maple and acrylic "see