The Problem Site
Membership Options
Member Options
You are currently logged in as .

Keep me logged in


New Member
Email (optional)
Notify me of new resources

Confirm password


Reset Password
Enter your email address below to receive instructions on resetting your account password.

Email address


Backwards Alphabet Code

The Backwards Alphabet Code is very simple. All you have to do is make a list of all the letters in the alphabet, and then make another list right next to it, of all the letters in backwards order. Kind of like this...

A = Z
B = Y
C = X
D = W

...and so on, through the alphabet. Now, when you write your message, every time you have the letter A, you replace it with a Z, when you have a letter B, you replace it with a Y.

But there's some bad news about this code. Not only is it easy to encode, it's easy to decode, too! Because all you have to do to decode it is do the process all over again! To see what I mean, type a message into the encoder and click "Encode". Now, instead of clicking "Decode", click "Encode" again. You get exactly the same message that you started with!

So don't use this code if you're worried about people finding out what you're talking about!

Decoding Tip
Would you like to know one of the methods cryptologists (people who work with codes) use to decode messages written in simple codes like this? They scan through the message and look for letters that are commonly used. Because they know that some letters are used a lot more than others. For example, the letter E is used more than any other letter in the alphabet. So if they were trying to break this code, which letter do you think they would find the most? (Hint: remember - the letter E gets replaced with another letter of the alphabet!)

Backwards Alphabet Code


  1. How would you write the letter 'K' in Backwards Alphabet code?
  2. Is there any letter that is the same when the alphabet is reversed? Why or why not?
  3. What message appears if you encode your own name?
  4. What is a cryptologist?
  5. If you encode the text "The Problem Site", and then encode the result, what is the final result?
Answer the

Click here for details

Get Your Own Game!

Is your website in need of a fun game to attract attention and get visitors to come back again and again? We can help you out. Our web development rates are reasonable, and we can help you turn your ideas into reality!

Click here to contact us!


Do mental arithmetic while racing the clock
Mastermind variation with words
Rearrange the matches to fix the math problem
Print your own worksheets
Get alerts about new resources
Share this Page
Assign games and activities to students!
Home     School work     All Games     Most Popular     Problems     ?????     Contact     About     Privacy Policy
Student Input