Rubik's Cube Celebrates its 40th Birthday: Can you Complete this 'Puzzle'? (Video)

Of course, Google didn't forget and neither did the geometry geeks out there. It's the Rubik's Cube's 40^th birthday.

Yet this 1974 invention by Erno Rubik, a Hungarian architect, was never meant to be a toy. The rainbow-colored cube was initially created to help explain three-dimensional geometry.

Rubik discovered that the hand-carving puzzle of "cubelets" were fun to scramble and then put back together after he patented the "Magic Cube" in 1975, an object that was twice the weight of the current model.

Today's version is composed of nine colored squares on each side that can actually be rearranged in 43 quintillion different ways. In case you were wondering, that's 43,000,000,000,000,000,000. Yet the original model was made out of wood.

"It was wonderful to see how, after only a few turns, the colors became mixed, apparently in random fashion," Rubik, a 29-year-old at the time, once said, according to The Washington Post. "It was tremendously satisfying to watch this color parade.

"Like after a nice walk when you have seen many lovely sights you decide to go home, after a while I decided it was time to go home - let us put the [26 linked] cubes back in order,"he recalled, via the news organization. "And it was at that moment that I came face to face with the big challenge: What is the way home?"

In 1977, Rubik signed on with a toy company to replace the current model with the rainbow colored version most are familiar with today.

He went on to demonstrate his invention at toy and trade shows, "speedcubing" the solution to this puzzle within a minute. That's extremely slow compared to today's record of six seconds held by Mats Valk of the Netherlands in March 2013. It's also relatively unimaginative. For instance, some have used their feet to put together a Rubik's Cube. Others have solved the puzzle blindfolded.

Still a popular 'toy' today, we don't see this mathematical puzzle disappearing any time soon. (Or, ever.)

Want to check out more about the Rubik's Cube? Watch this video, courtesy of YouTube.