9

For four days straight, the robotlet flew continuously until he reached Mars. As he approached the planet, he noticed something that glittering so intensely that it almost burned out his eyes. Around Mars orbited a giant Rubik's Cube made of gold!Rubik CubeSource: Tamás Mayer (background)
Each of the cube's faces was about a hundred metres long, and it was decorated with large colourful windows. There were nine windows on each, in red, blue, yellow, white, green, and orange colors, in complete chaos.
"Well, this must be the golden dragodroid's palace. A Rubik's Cube castle!" the robotlet marvelled as he slowly flew around it.
But no matter how hard he looked, he couldn't find an entrance. Not a big one, not a small one, not any kind at all. As he thought about it, an idea struck him.
"Dear Ventus," he said to the little metal plate on his chest, "I could use a little help. Please transform youself into a normal Rubik's Cube, which is an exact copy of this castle."