This six-sided, 4 x 4 cube is the next level in cube puzzles. Each face of the cube has 16 printed stickers, each with a different colour. This model features red, blue, yellow, green, white and orange sides. Twist and turn the cube to mix up the colours, and then try to replace the cube in its original position, with a single colour on each face. Solve this to continue on to the ultimate Rubik's challenge; the Rubik's Cube 5x5! The Rubik's Cube 3-Dimensional is known to be one of the world's best-selling toys! Over 350 million of these fascinating brain-teasers have been sold all over the world. The original puzzle was invented in 1974 by a Hungarian sculptor and professor of architecture named Ernő Rubik. It is said the original Rubik's Cube had 43 quintillion possible solutions

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