In 1917 British codebreakers in Room 40 cracked a German telegram that helped pull America into the war. Steam this one open.
Cipher · Thursday 15 October 2026
This desk has not corrected this file. Corrections.
Ten short puzzles about Room 40, the British codebreakers of WWI, from a number code up to an ADFGX closer. Answers are at the bottom.
Cipher · Thursday 15 October 2026
In 1917 British codebreakers in Room 40 cracked a German telegram that helped pull America into the war. Steam this one open.
This desk has not corrected this file. Corrections.
The paper
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