Here’s a difficult one for you to figure out. Some people can't do Rubik's Cube. This fellow does it with one hand AND without seeing.
For those who do not know how to solve it, here a link to one of many sites that show the solution. https://how-to-solve-a-rubix-cube.com/ Have fun.
I could do it quite fast when it was in fashion, but I learned it from an instruction, didn't work it out myself. To actually work out the solution without help, I think is one of the toughest practical puzzles ever devised.
I used to take them apart and reverse one piece then give it to the geniuses to solve, which they couldn't.