If you’re a fan of the Rex Cube, Skewb, or Ivy Cube you’re going to love this puzzle. Essentially, the Super Ivy Cube is a redesign of the Rex Cube- a classic Mefferts twisty puzzle created in 2009 by Andrew Cormier. QiYi has redesigned the Rex Cube by making the center and petal pieces larger which makes the puzzle look similar to the Ivy Cube. Fortunately, they also made the puzzle a lot higher quality than the original Rex Cube Each turn snaps into place with a satisfying click and the puzzle has a satisfying weight to it. You may even be surprised by the difficulty of this simple looking puzzle. Enjoy!