Size: Consists of 4 pieces / the box can fit into the breast pocket.
This figure looks like the easiest of all for our brain. There are 4 pieces and 4 sides to this rectangle. What could be easier?
Your first taught is that you will manage this “IQ PUZZLE • Rectangle” in the matter of seconds. Only after you will get a shape with 3 and 5 sides, you will realise that this is not what you originally taught.
This rectangle has pieces of uneven sizes and shapes. This makes it tricky for our brain. All we can do is wish you good luck in completing this “easy” rectangle in the matter of seconds.