Matchstick puzzles have long been a fun and challenging activity for those who enjoy a mental workout. These puzzles test not only your logical thinking but also your ability to spot patterns and apply critical thinking skills to solve seemingly simple problems. If you’re a fan of brain teasers, you’re in for a treat with this one.
Your mission, should you choose to accept it, is to correct an incorrect mathematical equation. The catch? You can only move a single matchstick! That’s right: just one matchstick has to be adjusted to make everything right. Think you’re up for the challenge? Let’s see if you can figure it out!
Here’s the equation that needs fixing:
13 – 3 – 9 = 13
Analyzing the Equation
At first glance, this equation looks pretty straightforward, doesn’t it? But when you calculate it, something doesn’t add up. Let’s break it down and see where it goes wrong.
First, let’s subtract 3 from 13:
13 – 3 = 10
Now, subtract 9:
10 – 9 = 1
As you can see, this doesn’t match the equation’s right-hand side, which says 13. Clearly, something needs to be changed, but what? Perhaps a small adjustment to one of the numbers or mathematical operators will do the trick.

The Challenge: Fix it With One Simple Move
The puzzle’s instructions are simple: You must move just one matchstick to make the equation correct. That’s it. No more, no less. Can you figure out which matchstick to move to solve the problem?
Sometimes, the answer lies in changing one of the numbers slightly, or in modifying a mathematical operator. When you only have one move to make, choosing the right matchstick to move can be tricky.
Take a moment to study the equation and see if you can spot the one matchstick that will make everything work.
Common Mistakes People Make
Before we reveal the solution, let’s explore some common mistakes that people often make when solving matchstick puzzles like this one:
1. Overcomplicating the Solution: It’s easy to start overthinking and trying to move more than one matchstick or even changing numbers unnecessarily. But remember, the solution only requires one move, and it should be simple.
2. Ignoring the Mathematical Operators: Many people focus on changing the numbers without considering the possibility that the issue lies with one of the operators. Sometimes, switching a minus sign to a plus sign is all it takes!
3. Not Seeing the Big Picture: When solving puzzles like this, it’s important to take a step back and view the entire equation. The solution may be less obvious than you think!
Here’s the Solution: Did You Figure It Out?
If you’ve given it a try and thought about the equation for a while, you might have figured it out by now. The solution is simple, yet clever.
To solve the puzzle, take the following step:
Remove the middle top-left vertical matchstick from the number 9 and place it vertically on the minus sign.
This change transforms the number 9 into a 3, and it turns the minus sign into a plus sign.
Here’s the corrected equation:
13 + 3 – 3 = 13

Conclusion: The Power of Simple Adjustments
Matchstick puzzles like this one are a great way to challenge your mind and improve your problem-solving skills. They teach you to think outside the box and realize that sometimes, all it takes is one small move to make everything work.
If you solved this puzzle, congratulations! If not, don’t be discouraged. The beauty of these puzzles is that each one brings a new challenge and an opportunity to learn something new. Share this puzzle with your friends and see if they can solve it as quickly as you did!
Stay tuned for more exciting matchstick puzzles and brain teasers. There are plenty of challenging puzzles out there to keep your mind sharp!