Each piece is solid so that you can feel its weight when you hold it in your hands. You can see the sophistication in what, at a glance, looks like a rugged design. There are many possibilities and as soon as you start trying to take it apart you will notice several protrusions that will hinder your path. This is the challenge that you must overcome. The theme is the letter G. Designed by Jin-Hoo Ahn from South Korea.