← Secret Writing · Lesson 1 of 3
Shift the alphabet
The Roman writer Suetonius tells us that Julius Caesar wrote some letters in a simple code: each letter replaced by the one three places later in the alphabet. A became D, B became E, and so on, wrapping round at the end.
This is now called a Caesar cipher, or a shift cipher. To read it, shift each letter back by the same amount.
With a shift of 3, what does the coded word "FDW" say?
A lesson is kept once you've answered the question and written at least 8 words. Nobody grades it; it stays on this device.