The Alan Turing Cryptography Competition

2023 edition. From the people behind the MathsBombe Competition.
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Chapter 2

Is that the best you can do?", flashed the message on Mike's screen. "Try to find the answer to this two-tone teaser"

A grid of 150 letters, numbers and punctuation marks arranged in 6 rows, each comprising 25 characters. The letters, numbers and punctuation marks are coloured either red or blue, as described below (reading across each row in turn). Row 1: The letter Q in red. The letter H in red. The letter O in blue. The letter W in blue. The letter W in red. The letter J in red. The letter M in blue. The letter Q in blue. The letter B in red. The letter I in blue. The letter A in red. The letter E in blue. The letter N in blue. The letter Q in blue. The letter R in red. The letter D in blue. The letter Y in red. The letter C in red. The letter P in red. The letter U in blue. The letter Y in blue. The letter H in red. The letter R in red. The letter J in red. The letter I in blue. Row 2: The letter Y in red. The letter F in blue. The letter M in red. The letter I in blue. The letter S in red. The letter M in blue. The letter A in red. The letter E in blue. The letter Z in red. The letter M in blue. The letter R in red. The letter E in red. The letter L in blue. The letter C in red. The letter T in red. The letter N in blue. The letter K in red. The letter U in blue. The letter N in blue. The letter I in blue. The letter N in red. The letter M in blue. The letter W in blue. The letter R in blue. The letter W in blue. Row 3: The letter F in red. The letter K in red. The letter B in blue. The number 6 in blue. The letter I in red. The letter E in red. The letter V in blue. The letter S in blue. The letter E in red. The letter T in blue. The letter R in red. The letter C in blue. The letter I in red. The letter P in blue. The letter Y in red. The letter A in blue. The letter S in red. The letter D in red. The letter V in blue. The letter S in blue. The letter A in blue. The letter N in red. The letter R in red. The letter C in blue. The letter O in blue. Row 4: The letter N in red. The letter A in blue. The letter X in blue. The letter E in blue. The letter W in red. The letter Q in blue. The letter Z in red. The letter L in blue. The letter I in red. The letter L in blue. The letter M in red. The letter U in blue. The letter A in blue. The letter E in blue. The letter Z in red. The letter Z in blue. The letter Z in red. The letter U in blue. The letter A in blue. The letter K in blue. The letter B in blue. The letter S in blue. The letter R in blue. The letter Y in red. The letter W in blue. Row 5: The letter S in red. The letter X in blue. The letter T in blue. The letter N in blue. The letter I in red. The letter K in blue. The letter H in red. The letter L in blue. The letter A in red. The letter B in blue. The letter S in red. The letter T in blue. The letter N in blue. The letter L in blue. The letter L in red. The number 1 in blue. The letter R in red. The letter J in red. The letter J in red. The letter C in blue. The letter I in red. The letter Z in red. The letter X in red. The letter T in blue. The letter L in blue. Row 6: The letter P in blue. The number 1 in blue. The letter B in blue. The letter U in blue. The number 0 in blue. The number 5 in blue. The letter H in blue. The letter X in blue. The letter E in blue. The letter O in blue. The letter X in blue. The number 0 in blue. The letter H in blue. A question mark in blue. An exclamation mark in blue. The letter B in blue. The letter X in blue. The letter Q in blue. The letter L in blue. The letter S in blue. The letter F in blue. The letter G in blue. The letter R in blue. A question mark in blue.
Alan Turing Cryptography Competition 2023 is organised by the The Department of Mathematics at The University of Manchester.
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