< Puzzles
Rubik's cubes
Rubik's cubes are permutation puzzles, meaning they have to be solved through changing their configuration or position using interchanging elements. There are usually several ways to reach the solution. l The design was originally invented by Ernő Rubik. The cube has 6 colored faces and the goal is to get the same color on each face. The Rubik's cube (3x3x3) was the best selling toy of the 20th century.
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