If you've ever sat in math class and wondered "When will I ever use this stuff?", have we got a math problem for you. In 1966, mathematician Leo Moser posed this mathematical quandary: "what is the shape of the largest area in the plane that can be moved around a right-angled corner in a two-dimensional hallway of width 1?" If that sounds a little like the question you might ask when moving furniture, you're in good companyâ€”mathematicians refer to this as the "moving sofa problem." Unfortunately, it remains unsolved to this day. Wrap your mind around it in the video below.

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