The Dino Cube is a cubic twisty puzzle in the style of the Rubik's Cube. It was invented in 1985 by Robert Webb, though it was not mass-produced until ten years later. It has a total of 12 external movable pieces to rearrange, compared to 20 movable pieces on the Rubik's Cube. History Robert Webb designed and made the first prototype of what would become the Dino Cube in 1985; his original prototype was made entirely out of paper. Since then the puzzle was reinvented twice, but full mass production of the puzzle did not start until 1995. The first mass-produced version had pictures of dinosaurs depicted on each piece, which led to the adoption of the puzzle's current name of Dino Cube. It is not known what the puzzle had been called before this dinosaur version was introduced. The later versions, however, adopted the practice of using standard single-colour stickers, in common with most other twisty puzzles. Overview The Dino Cube is a twisty puzzle in the shape of a cube. It consists of 12 movable pieces, all of which are located on the edges of the cube. The puzzle can be thought of as twisting around its corners: each move changes the position of three edge pieces adjacent to the same corner, by rotating them around that corner. There are in fact eight more "hidden" pieces inside the puzzle, which are located at the corners and are fixed to the puzzle's core; these pieces only become visible in the middle of a move. The vast majority of mass-produced Dino Cubes have the standard six-colour scheme, with one colour on each face of the cube in the solved state. This is in common with most other cubic twisty puzzles, including the Rubik's Cube. However, a few versions with other colour schemes also exist, including one with four colours (where each colour is centred around one corner of the cube in the solved state), and one with just two colours (where each colour present on half of the puzzle). The purpose of the puzzle is to scramble the colours and then restore them to their original configuration, usually of one colour per face. Solving The Dino Cube is considered to be one of the easiest twisty puzzles to solve. One of the things that make it so easy is the fact that each move only affects three edge pieces at