This unique puzzle box, originally designed by Benno de Grote; a Dutch university professor. It requires 29 steps to open.Using the dots of the dice you can execute a sequence of sliding moves that will open this puzzle box. But it does take 29 steps to open this box and they must be done in exactly the right order so it's not going to be easy.
The story Benno de Grote told about this design is:"I made this box in the first year of my study Industrial design engineering at the TU Delft. The very first assignment of this study was “make a wooden container”. I quite excelled at this assignment since I’ve been making puzzle boxes since I was 10 years old. The only problem was the very limited amount of time for the assignment. Because of this I didn’t make any design drawings for this box, I just started cutting wood right away. Surprisingly enough The box turned out quite alright. I later made a redesign which was a lot smaller because the original version had bigger margins (which was necessary without design drawings), which made the box bigger."
Unlike standard Japanese puzzle boxes where you're moving external panels that are visible, this box has finger holes that allow you to slide panels under the outer layer. You have a sense of them sliding but you cannot actually see what they are doing or how one side of the box is interacting with the other sides, or the top and bottom. But they definitely are interacting. With the right sequence of moves, in the right order, all 29 of them, the lid will come off the box.Once opened there's space inside this box, size almost 3" inner cube, and it's ok to put somethings inside without interfering with the mechanism, but not sure it's a good idea on this one, since it's quite complicated to solve, even with the solution. You can fit a gift card, credit cards, folded bills, coins, and Jewelry, inside the box.
Beautiful and hard to solve puzzle box, a must for any one that love puzzle boxes.