At last, the Hamiltonian circuit problem for Rubik's Cube has a solution! To be a little more mathematically precise, a Hamiltonian circuit of the quarter-turn metric Cayley graph for the Rubik's Cube group has been found.

@online{item22,
title = {A Hamiltonian circuit for Rubik's Cube},
author = {cuBerBruce},
url = {http://bruce.cubing.net/ham333/rubikhamiltonexplanation.html},
urldate = {2012-09-04},
abstract = {At last, the Hamiltonian circuit problem for Rubik's Cube has a solution! To be a little more mathematically precise, a Hamiltonian circuit of the quarter-turn metric Cayley graph for the Rubik's Cube group has been found.},
comment = {},
collections = {easily-explained,puzzles},
year = 2012
}