What's the hardest Cube-y thing?

I’ll see your 20x20x20 cube and raise you a 22x22x22!

I’m fairly confident that three different sizes would make it easier - because then you’d only be able to make patterns with the opposite sides jumbled, and I find them generally quite easy to unscramble.

Not quite so confident on, say, 3x4x4 … you’d have the top and bottom only able to be swapped, but with the middle fully rotatable I could imagine that you might end up with some fairly complex patterns on the other four faces - and some of the usual algorithms would be barred to you

!!!

dodecahedron…I had that one as a teen. Once I took it out of the package and turned a few of the faces…well I eventually threw it away out of boredom since I never could get it back to “solved”

how funny, to me anyway, just went into guestlings room for something and spotted my old[“rubic’s chain”](rubik’s chain puzzle) puzzle.

The sensations you shall experience

I’ve got your hard-iest cube thing right here:

Here’s a high-speed video replayof a solve of a 3x3x3x3x3x3x3 cube. (Yes, a SEVEN-dimensional cube).

You feeling particularly bright today? By all means, download the program and scramble-up a 5x5x5x5x5x5x5 cube:

You are not prepared.

After posting on this thread, I pulled that “cube of many colors” out and started playing with it. Have solved it 13 times, every solution different.

Also want to recommend the “X-Cube”. Got one of these about a month ago. Imagine a standard 3x3x3. Then add an extra layer to all but the top and bottom faces. You get a 5x5x3 with “missing” edges so it kind of looks like an “X”, or perhaps a squat plus sign. I have solved it several times, but only through a process of “informed trial and error”. The real bugger with it is that it “morphs” as you work it and limits your ability to turn the extended sections unless they have all nine cubies. Hope that’s clear.