Ключевые слова: background, block, blue, brain, classic, color, colorful, combination, concept, creativity, cube, cube shape, dimensional, editorial, education, entertainment, erno, game, grass, green, intelligence, invented, leaves, leisure, logic, mathematics, mind, object, orange, play, problem, puzzle, random, red, rubik, rubiks cube, solution, solve, solving, square, thinking, toy, white, yellow,