Megamorphix Tutorial Parity Free!! 

I meant “very excellent” not *brain* 😀

Finally solved it with your tutorial which are always the best so thanks for all of the time you put into these !!!

+WidardCubes Good point. When talking about false equivocation, I'm referring more to the informal fallacy of false equivocation, which in the semantic form refers to the ambiguous nature of a term that can be used in two different ways. Like light as in the light from the sun, and light as in the opposite of heavy. In puzzles, the fallacy is more of an analogy to that, where instead of a word, a puzzle piece can be applied in different positions and rotations and appears equivalent Because it looks the same, as the ambiguous word does, it is believed it can be used the same way. Just as the logic breaks down with false equivocation in an argument, so too does the solve break down in a puzzle. I talk about translational and rotational equivalence when referring to the ambiguous piece or pieces, and how it can lead to false equivocation. You can also refer to it as the fallacy of false equivalence, or whichever you prefer. I look at equivocation as something that involves the argument, or the puzzle, as a whole, and equivalence as the particular word, or puzzle piece. Good question!