Hanayama's Cast Horse is a really fascinating toy. It is the first one I got for my collection and the one which hooked me up with 3D puzzles. Even though its difficulty is just 2 out of 6, initially it looks impossible to solve. Since it is not very intricate, it doesn't take much to figure it out, but the solution still looks like a magic trick. Cast Horse is definitely a "crowd pleaser" and can be used to entertain your guests for a couple of minutes at least. Highly recommended toy!