Stefan
Member
Not by a long shot.So is my proof good enough?
Not by a long shot.So is my proof good enough?
How about now?Not by a long shot.So is my proof good enough?
Okay, that does convince me (for me with my knowledge of how old pochmann works, it's alright as proof). Although I must admit I only checked the first few setups. Checking all the remaining ones would've been tedious. Not as much as you finding them, of course. Anyway, this is exactly what makes it an unelegant proof. It's not like "three Rperms give me a U turn, so the cube can be solved with Rperms alone", you know? Well, you can shorten it by saying you can solve corners (and thereby also take care of parity) because their movement is unrestricted. But the edges part would still be tedious and unelegant.
Per, what's that post supposed to be?
Last one is easy: Rrl'L' performs an x rotation, you can then get D and d moves by Rrl'L' F R'r'lL and Rrl'L' f R'r'lL.
In fact it is possible to show that every solvable position on the 4^3 can be reached using only U, Uw, Lw and Rw moves. I'll let you figuer out how...
Last one is easy: Rrl'L' performs an x rotation, you can then get D and d moves by Rrl'L' F R'r'lL and Rrl'L' f R'r'lL.
In fact it is possible to show that every solvable position on the 4^3 can be reached using only U, Uw, Lw and Rw moves. I'll let you figuer out how...
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