The Sliding Panels Puzzle Box was developed as a Christmas present for Karakuri Members in 2023. The crafter describes this work by stating the following: "This work was designed as a Christmas present for 2022. Four panels move, but only two of them are keys. It's a slightly different way of unlocking. ." Crafted by Akio Kamei and constructed of Walnut. Exterior measures 85 x 85 x 49 mm. Secret space 50 x 50 x 16 mm. Comes in Gift Box and Opening Diagram!