The Kracker Puzzle was developed as a Christmas present for Karakuri Members in 2019. The puzzle takes on a unique shape and the solution is not too difficult. A strong magnet is used in the mechanism. It has exterior measurements of 128 x 61 x 61 mm with a small secret space measuring 34 x 34 x 28 mm. Crafted in Chanchin, Magnolia, Keyaki (Zelkova), Maple and Walnut woods. Comes in Gift Box and Opening Diagram! *Please note that this is a stock photo. The puzzle box being sold is in mint condition.