Something that is impossible even if you try until you die if you don't know the formula.jpg

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Even Ernő Rubik, the architecture professor who invented this cube,
took one month to solve it for the first time after scrambling his own invention.

A man from the UK named Graham Parker
happened to purchase a cube in his youth,
and without studying any specific formulas, relying solely on intuition and sheer willpower,
it took him a staggering 26 years to solve it.
(The Persistent Briton "Solved the Cube After 26 Years" - Opinion | Hankook Ilbo)
You might wonder, "Is it really that difficult?"
But in the case of a 3x3x3 cube, there are approximately 43 quintillion possible combinations.
Even if you happen to solve one side, solving the next side will scramble everything you previously completed.
Therefore, even for a human with average intelligence,
if they do not know the formulas, it is highly likely they wouldn't be able to solve it even if given a lifetime.
The current world record for the 3x3x3 cube is 2.76 seconds.