Chapter 4

M: Groan. This one will get you in a spin. If you get mixed up. Take a deep breath and count to three.

The image consists of groups of letters with spaces between them. The
letters are arranged in three lines.

First line: SIUG NNLO IYTENERG BSTWEENEON AED NNEOHU
Next line: DRND EHAW IT TSE HARLESG PTOPRR ERAFTICN OHAT
Final line: CTN AE BRIWTET WNTHIUTOUS NGITH LETTER E E?

The image above contains a hidden question. Please enter your answer to the question in the box below. If the answer is a number please enter it using numerals rather than words.

19th February 2025: Answer corrected.

To deter guessing without thinking, we ask that you also solve the following simple arithmetic problem before checking your answer:

What is 7 × 6 - 9?

This problem was first solved on Mon 10th February at 4:10:38pm

Alan Turing Cryptography Competition 2025 is organised by the The Department of Mathematics at The University of Manchester.
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