too lazy to quote for questions, so I'll just throw all the answers here
because RLS is repetitive leg syndrome, lol, and somewhere along the way rowe found out that the whole (or most) of RLS algs are already found by mats, so they collaborate to create OLS, WV-style cases is named after mats as VLS, and SV-style cases is named after rowe, HLS
M is not 3 moves, at least not in HTM
and U = y' Dw, which is equal to E D, not S' D'
and if you write E D in an fmc paper instead of U, you will really get 3 moves
HTM consider centers as fixed, so M is L R' x' in regards to he fixed centers, rotation is 0 because it does not do anything to the cube state
I believe I read somewhere that a cuber memorized all the ZBLLs, too bad that person is not a speedcuber, but many people memorize easy random cases, and a few people were, or are still trying to memorize the whole set, and they have reached quite a significant number
Feliks is pretty much dual CN at 4x4 yau speedsolves
Robert Yau himself is CN at 4x4 yau though
a friend of mine played chess, too bad he is not active in the forum though
half of these can be easily searched through the forum, youtube and speedsolving, I have no idea why you guys aren't doing that instead