A handful of spare change is all you’ll need to play this game. So, check your pockets; you’ll need at least nine coins.
Okay, here is a geometric coin puzzle for you to try. Arrange your nine coins in a square shape per the illustration below. Your task is to move two of the coins to make the square into a triangle shape. You can move them anywhere, but you can only move two coins, and you have to use all nine coins. Can you solve it?
You’re going to have to use your heads for this puzzle—tails is fine, too—and do try thinking outside of the box.
Give it a try!
Take a moment to solve it yourself. Don’t deprive yourself of the satisfaction of solving it on your own by giving up right away! When you think you’ve got it, or if you’ve totally given up, scroll down to see the answer.
Move these 2 coins here and here:
And there you have it! A square shape is transformed into a triangle.
Now, are you ready for a bonus round?
There is actually another answer for this puzzle. Can you find out what it is? Set your coins back to the original square position and give it a second try!
When you think you have the correct answer, scroll down to see what it is.
This time, move these two coins here and here:
And presto! A square becomes a triangle.
Congratulations if you were able to solve this. And if you weren’t, try more puzzles here for some extra practice.
Don’t forget to share this puzzle with your friends or family members and see how they fare with this spare-change challenge!
Illustrations were supported by Shutterstock.