Here's your chance to crack ciphers similar to those Bletchley Park's codebreakers faced during World War II. Below, we present three ciphers of different levels of difficulty, from easiest to ...

To prove you are up to the job, decode this cipher sent to you from your leader, Winston Churchill. Decode the cipher below. As you discover what each encrypted letter represents, print it over ...

1. An agent hands the text to a cipher clerk, who uses a code book to convert the words to four-digit numbers: 2. The clerk shifts one digit to the first group from the second, two digits to the ...

A cipher is a code used to protect information that is being stored or communicated, so that only people who are allowed to can access it. With this fun challenge, brought to you in partnership ...