Problem: starting from the standard position of the Rubik's Cube (one color for each face), is it possible to reach a complete disorder (six colors on each face, appearing on each face from one to two times) ?
The problem appears in the book about the Rubik's Cube by A. Warusfel, 1981.
The solutions given in the book are imperfect.
Notation
The six faces of the cube: up, down, left, right, front,
back.
90° clockwise moves of the faces are described as U, D, L,
R, F, B
90° anti-clockwise moves are described as U', D', L', R',
F', B'
180° turns are described as U2, D2 , L2, R2, F2, B2
18/04/2002 solution : a scrambled cube in nine moves :
solution : Alessandro Fogliati
If you perform the movement four times, you obtain the standard position.
historical notes:
23/03/2002 : Multicolor Cube (2) : R D2 U2 L R D U L' R' F2 B2 R2 F2 B2
six colors on each face, they appear on each face no more than two times, and stickers of the same colour touch themselves by vertices only. (14 moves)
solution: Alessandro Fogliati : picture
29/07/1993 : Multicolor Cube (1) : R D2 U2 L R D U L' R'
six colors on each face, they appear on each face no more than two times.
solution: Alessandro Fogliati : picture
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