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Path Cipher (Codes Part 4)

Now let’s try the Path Cipher – a cipher that mixes things up even more than Zig Zag did.

Pig Pen Cipher (Codes Part 2)

Let’s encode some secret messages with a cipher that was actually used during the American Civil War!

Shift Cipher (Codes Part 1)

Let’s encode and decode secret messages like Julius Caesar!

Bulls and Cows

How quickly can you break the numeric code?