Puzzle for beginners: the 3 x 3 x 1 cube is a single layer puzzle. It has 9 white and yellow stickers on the top and bottom as well as three green, orange, blue and red stickers on the sides.Easiest to solve cube: with only 192 permutations, this puzzle game is one of the easiest cubes in the Rubik collection. It is an ideal introduction to the world of Rubik puzzle toys. POCKET CUBE – The 3 x 3 x 1 shape of this cube means that it fits perfectly in your jeans pocket or on the side of your bag. Take this 3 x 3 x 1 cube with you to solve the puzzle. For everyone – Rubik’s Edge is suitable for everyone – all ages and abilities are welcome to try to put their teeth into the difficult Rubik’s Puzzle toy.