It's a fact of life that many people today are so attached to their handheld devices they literally can't look up for more than a few seconds without twiddling away online.
In order to amuse themselves, they invented games: card games, board games, and matchstick puzzle games like the one you're about to play.
Try this one for yourself!
Make the three matchsticks into six without breaking them.
In just two simple moves, you can turn three matches into six!
And there it is: the number six ... written in Roman numerals. You probably never expected that, did you? That's why they're called "brainteasers"; they tease the brain to expand outside one's boundaries—including your assumptions about the game itself. In this case, we never said not to use Roman numerals; your own assumptions might have boxed you in.
If you were successful in solving it, congratulations! You've shown your ability to think outside of the box!
And, if you enjoyed this game, be sure to share it with a friend or family member, and give their brains a good tease!