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# Pocket Cube

The Pocket Cube (also known as the Mini Cube) is the 2×2×2 equivalent of a Rubik's Cube. [1]

## Combination puzzle

A combination puzzle, also known as a sequential move puzzle, is a puzzle which consists of a set of pieces which can be manipulated into different combinations by a group of operations.

## Cube

In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex.

## Factorial

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example, The value of 0! is 1, according to the convention for an empty product.

## Ideal Toy Company

Ideal Toy Company was an American toy company founded by Morris and Rose Michtom.

## Larry D. Nichols

Larry D. Nichols, born 1939 in the United States, is a puzzle designer.

## Lucas Etter

Lucas Etter is an American speedcuber who previously held the world record for fastest single Rubik's Cube solve, 4.90 seconds, set at River Hill Fall 2015 on 21 November 2015 when he was 14.

## Mats Valk

Mats Valk (born 4 May 1996) is a Dutch Rubik's Cube speedsolver.

## Orientation (geometry)

In geometry the orientation, angular position, or attitude of an object such as a line, plane or rigid body is part of the description of how it is placed in the space it occupies.

## Patent

A patent is a set of exclusive rights granted by a sovereign state or intergovernmental organization to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention.

## Permutation

In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting.

## Professor's Cube

The Professor's Cube is a combination puzzle, a 5×5×5 version of the Rubik's Cube.

## Rotation

A rotation is a circular movement of an object around a center (or point) of rotation.

## Rubik's Cube

Rubik's Cube is a 3-D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik.

## Rubik's Revenge

The Rubik's Revenge (also known as the Master Cube) is a 4×4×4 version of Rubik's Cube.

## V-Cube 6

The V-Cube 6 is a 6×6×6 version of Rubik's Cube.

## V-Cube 7

The V-Cube 7 is a combination puzzle in the form of a 7×7×7 cube.

## V-Cube 8

The V-Cube 8 is an 8×8×8 version of Rubik's Cube.

## World Cube Association

The World Cube Association (WCA) is the worldwide organization that regulates and holds competitions for mechanical puzzles that are operated by twisting groups of pieces, commonly known as twisty puzzles (a subcategory of combination puzzles).

## References

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