Hey there, I know this post is old but if anyone is looking at it, I need some help. At the end of the puzzle, when there is just a 2x2 left to solve I'm getting stuck with two blocks that need to swap positions with each other but I have no idea how to do that, so if someone could help me out (Especially because this says its a fool-proof guide, sooooooooo) it would be really appreciated.
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