I consider this something like the next step, in introducing the locks.
So, this lock is a little bit ''upgraded''. This example shows that the main principle of solving is the same as in ''regural/simple lock''.
In this regard, looking through beginners lens, I give this 5 stars, too.
I found it very funny. I got it fast, because at first, I saw how I need to exit, and from there watching back, it gave me an idea how to start with not so many alternatives possible: 9 tries.
