Have a look at Brilliant (and get 20% off) here: https://brilliant.org/RedKB/
Any puzzles I missed for this list?
In this video I look at puzzles that seem hard but are actually kinda easy!
Here’s the camera and sound equipment I’m using: http://bit.ly/RedKB-Gear
Follow Me on Social:
My Snapchat username: redkb
My instagram: http://instagram.com/red.kb
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My google+: http://google.com/+RedKB