Jul. 9—The Rubik's Cube, once the ubiquitous toy of the 1970s and'80s, has made a fast and furious comeback in recent years, and Hawaii cubers, as competitors are called, have been making their mark.

The Rubik’s Cube has been reinvented with more games and many more screens for much more money. What has long been cherished as a simple toy yet complex puzzle requiring nothing but a healthy amount ...

Google Xuan, 7, left, finished the last few moves on a 3x3 as his brother Enzo Xuan, 12, reacted proudly during a practice speedcubing session. Parents watched a practice speedcubing session on June ...