Cast Equa puzzle has a spherical shape and represents a planet and the ring around it. The planet is positioned stably inside the ring and looks as if it cannot be removed, and all you can do with it is rotate it around its axis. Is that so?
The object of this cast metal puzzle is to separate the two interconnected loops and remove them from the surrounding planet, and then reassemble it. The puzzle was designed for Hanayama by Oskar van Deventner from the Netherlands and was launched in 2008.