The Topstar Puzzle was developed as a Christmas present for Karakuri Members in 2018. The crafter comments on his work in the following manner, " The star on the tree top is symbolic of the star in Bethlehem. This year as well, I was conscious of the Christmas motif I chose. I think perhaps you could use it as an ornament after unfolding up the widget." This puzzle evolves into a unique shape but is not very difficult to solve. It has exterior measurements of 83 x 78 x 44 mm. with a small secret space measuring 69 x 66 x 18 mm. Crafted in W alnut, Keyaki (Zelkova), Maple and Magnolia. Comes in Gift Box and Opening Diagram!