'The Speed Cubers' takes on the world of competitive Rubik's Cube solving

Speedcubing is the sport of solving a classic Rubik’s Cube — or a related combination puzzle — in the shortest amount of time possible. And, no, it is not for the faint of heart.

The new Netflix documentary on this subject, The Speed Cubers, dives headfirst into the friendly but competitive speedcubing culture. The...