A speedcuber tries my win £20 if I don't solve in under 20 seconds challenge | speedcubing.org
Daniel Evans
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.
