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R L U2 F U’ D F2 R2 B2 L U2 F’ B’ U R2 D F2 U R2 U Superflip, the first position proven to require 20 moves.
from http://ift.tt/1x9CLBK
via IFTTT
R L U2 F U’ D F2 R2 B2 L U2 F’ B’ U R2 D F2 U R2 U Superflip, the first position proven to require 20 moves.