And what is the average required amount of moves? I realise 18 moves is the most common, but is 15-16 about average?
Coool
"Distance-20 positions are both rare and plentiful; they are rarer than one in a billion positions, yet there are probably more than one hundred million such positions. We do not yet know exactly how many there are."Exactly how many positions are of maximum distance from solved? And are all these symmetrical positions??
Per
On to 4x4!
Edit: This isn't serious. Not at this point in time, at least.
I'm wondering if it's a coincidence how there is exactly 20 pieces (12 edges and 8 corners.) This is excluding the core but that doesn't change position.