4L - Packing Puzzle

An all-time favorite design by Yasuhiro Hashimoto.

The goal is to fit the 4 L-shaped pieces inside the restricted box.

Much, much harder than it looks, with a beautifully creative solution.

This puzzle was awarded a honorable mention in the IPP 2015 and due to that became quite hard to obtain.

Now that you can get it, let's see if you can also solve it ;)