If you haven't heard of it yet, Red Bull is hosting a Rubik's Cube championships later this year in Boston (https://mindgamers.redbull.com/rubiks/championship). Some of the cubing world is in uproar, for whatever reason, but I'm actually kind of intrigued by it. It seems Red Bull is getting more and more interested in mind sports, which bodes well for the future of memory sports.
In the meantime though, they have a fabulous set of mind challenges here with some cool prizes to win:
I helped them put together the most recent one, involving memory of course, so I encourage you to go and have a look. If you take the challenge, you stand a chance of winning one of these glorious puppies: