Japanese Joinery Box

On my shelf sits a wooden puzzle box using Japanese joinery, no nails, no glue, just interlocking cuts in the wood that hold the pieces together through friction and geometry. Opening it requires a sequence of sliding panels, and discovering the right order takes about 5 minutes the first time and 30 seconds once you know the trick. So precise are the joints that when the box is closed you can't see the seam lines. Wood grain runs continuously across the joints so the box appears to be carved from a single block. Designing a mechanism this elegant without any fasteners is something I want to understand, and the craft tradition behind it stretches back centuries in Japan.