This type of mechanical puzzle is called a framed burr. There are 4 interlocked pieces inside the box and it will take many sliding moves to remove them. They have to be done in a very specific order or they just won’t come out of the box.
You can’t easily get your fingers in there and you can’t see very well inside the box so you’ll have to rely on other instincts to manipulate the pieces and remove them from the box. This one if for the quite daring and determined puzzler who really can quite literally think outside the box!
The puzzle requires twelve sliding moves to remove the pieces but the real puzzle may turn out to be how to get them back inside the box again using these 12 moves, although there are many other combinations that will also work. This 12 move sequence is the one we give the printed solution for so if you put it back another way you’re definitely on your own! No worries. That just makes for a whole lot more fun puzzling.
Between 1995 and 2005 we made the Pandora’s Box puzzle here at Mr Puzzle but have now sourced them from a Chinese manufacturer. The puzzle is a looser fit but that doesn’t seem to make it any easier to get the pieces out. Every puzzle has been checked and pieces removed and put back together to ensure it matches the printed solution. Something other retailers do not do.
Tadao Muroi (since deceased) designed this framed burr in Japan in the early 1990s and there have been many different wooden versions of it. Also some handsome metal versions like the Internal Combustion puzzle and also the very rare and collectible Piston Puzzle by Marcel Gillen.
Size 75mm x 75mm x 57mm