The Secret Code

Good morning, my dear pupils.

Did you read my article on cryptography? Holmes is an skilled cryptanalyst. You can demonstrate you deserve being his assistant. Solve this little whodunit.

“Ah, Watson!” exclaimed Holmes, as his colleague entered the study of 221b. “Now that you’re back, perhaps you can give me the last two letters in this sequence, which appeared on a scrap of paper that had been found in Professor Moriarty’s rooms.”


Watson didn’t have a clue, do you? 


I look forward to hearing from you

Doctor Watson

1 Comment

  1. Hi Doctor Watson!

    I can’t find the solution. Can you give me a clue? I want to be Holmes’s assistant

    Bye, bye

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