I got something to play with recently. It's kind of challenging but it is driving me crazy. It's really testing my patience. Don't really have much patience but then another part of me just need to solve it. So manage to solve it at last. Will get another to try other time. So, manage to think what it is? Well, it's these small boxes.
All these are unsolved:
All these are after they are solved:
Solving all these are driving me crazy. I need some rest.
