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

Shifted Alphabet Code

The Shifted Alphabet Code is very very easy to do. Begin by writing down the alphabet in order on a piece of paper (or use the one below).

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Now pick a number between 1 and 25. Got it? I picked the number 3. Now, when you write down your coded message, instead of writing the real letter, you find that letter in the alphabet and count forward - as many letters as the number you picked.

So, if my message was "HI, HOW ARE YOU?" I would begin by finding the letter H, then counting foward three letters, to get the letter K. Then, since the next letter is I, find the I and count forward to get the letter L. Keep going through the whole message like that.

Uh oh...what about punctuation (like that question mark at the end of "Hi, HOW ARE YOU?"? Just leave that exactly the way it is.

Uh oh again! what happens when I get to the letter Y? I can't count forward 3 letters, because there aren't enough letters in the alphabet! That's okay...just start over at the beginning, after you count the Z. So Y becomes B!

Get the idea? Now you can try the Encoder at the top of the page. This encoder Shifts all the letters one, so an A becomes a B, a B becomes a C, and so on.

Is this code difficult to decode? Well, it's only a little bit harder to decode than the Backwards Alphabet Code. Why? Because, in order to decode it, you need to know how many letters the message was shifted in the first place! Of course, if you don't know, it's not impossible...you just have to "unshift" it one letter at a time, until you get a message that makes sense!

Do you think people use this code for things they need to keep secret? No, they don't. Because it's too easy to decode. But it's still fun to play with.

Shifted Alphabet Code

Questions

1. What does the letter 'T' become if you shifted the alphabet 5 letters?
2. What does the letter 'X' become if you shifted the alphabet 3 letters?
3. You could also shift in the other direction, so 'B' becomes 'A'. If you did that, what would 'A' become?
4. What is your name, shifted twice?
5. If you encode the text "The Problem Site" by shifting it 26 times, what will the result be?
questions

Have you tried our new games?
Not only are we redesigning all our games for the updated version of The Problem Site, we've also added some new games and features THAT ARE NOT AVAILABLE HERE! Want to try the new site?

To try out the new version of the games, just type the four letters that appear below, and click "Show Me!"
F
J
B
V

POPULAR PAGES TO TRY

Rearrange the numbers in the triangle to fit the rule
Memory game with equivalent fractions
Mastermind variation with words
Match object attributes in this Junior game