3x3 Cube
The 3x3 is the most popular cube in the world. It's a great starting point for beginners and a challenge for experienced cubers.
The goal is to align all the colors on each face of the cube. Although it looks simple, figuring it out on your own is extremely difficult.
Since it is the original puzzle created by Erno Rubik in 1974, it is the main event of the sport.