A Google-a-Day Puzzle for Mon., Oct. 17

Reading Time: 2 minutes

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Our good friends at Google run a daily puzzle challenge and asked us to help get them out to the geeky masses. Each day’s puzzle will task your googling skills a little more, leading you to Google mastery. Each morning at 12:01 a.m. Eastern time you’ll see a new puzzle, and the previous day’s answer (in invisitext) posted here.

SPOILER WARNING:
As a test, we’re going to leave the comments on so people can work together to find the answer. As such, if you want to figure it out all by yourself, DON’T READ THE COMMENTS!

Also, with the knowledge that because others may publish their answers before you do, if you want to be able to search for information without accidentally seeing the answer somewhere, you can use the Google-a-Day site’s search tool, which will automatically filter out published answers, to give you a spoiler-free experience.

And now, without further ado, we give you…

TODAY’S PUZZLE:

What decryption method was used to decode Mary Queen of Scots’ treasonous cipher?

YESTERDAY’S ANSWER (mouseover to see):

Search [Duke of Wellington Copenhagen] to find that Copenhagen was his horse. Search [Ulysses S. Grant Cincinnati] to learn that Cincinnati was the name of his favorite horse. Search [Caligula horse] to discover that his favored horse was named Incitatus.

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