![](http://www.puzzleboxworld.com/skin/frontend/default/default/images/aht/img_home.jpg)
Japanese puzzle boxes, must solve everything correctly to open it.
The brain teaser of the gods.
I HAVE ONE OF THOSE AND ITS loving AWESOME
but it came with instructions :(
anyways i have a 2x2, 2x3x3, 3x3, 4x4, 5x5, and 7x7 as well as a pyraminx. lol