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Monday, July 23, 2012

23 July 2012 - Codebreakers!

In the future, we will do harder codes, but for today it will be an easy substitution code.  A substitution code means a code where you substitute a different letter for the letter you want.  The top line below is the letter you want, the bottom line is what you will write instead of the real letter.  For our code today, we will do this:

Real letter:  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
Code letter: 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 A(use these to write in code)

For example, if you wanted to write the word "dog" in code, you would first look for the D on the top line.  Below it is an E, so that is the code letter for D.  "DOG" in this code would be spelled "EPH."

Try to write these in code:  CAT, SMART, BLUE  (answers are at the bottom of this post)

To decode a message that is already in code, you need to look for the letter in the bottom row, and see what letter is above it.  If a coded message said "EVDL"  you would look for the E in the bottom row and there is a D above it, so D is the first letter of the real word.  Solving for the other letters, you would realize that the coded word is telling you to "DUCK."

Try to decode these words:  SFE, MVDLZ, TDIPPM  (answers are at the bottom of the post)

In the comments, answer the following question:
Xibu jt zpvs gbwpsjuf gppe?

Answers for CAT, SMART, FAST
CAT = DBU
SMART = TNBSU
BLUE = CMVF

Answers for SFE, MVDLZ, TDIPPM
SFE = RED
MVDLZ = LUCKY
TDIPPM = SCHOOL

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