At my stall in Sutton I challenged a local speedcuber (who averages around 20 seconds) to my challenge, he simply did superflip into checkerboard which is meant to be the hardest scramble if you (like me) don't know how to reverse it.
A speedcuber tries my win £20 if I don't solve in under 20 seconds challenge | speedcubing.org
Jul 26, 2021
