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The National Cipher Challenge

Hints, tips and cribs etc

The first Casefile for Challenge 10 was published this morning and it is really unhelpful [Muahahah]. It is, at best, a cryptic hint at the type of cipher used for Challenge 10A and it is the only case file we will be publishing for that challenge. Further hints will be furnished by the competitors on the Forum. We will be looking for the best hints from those who have cracked it and will release them throughout the remainder of the competition, so blame your fellow codebreakers, not Harry, if you don’t get enough help!

For Challenge 10B we have a stack of 11 Casefiles ready to go, and they will all be published on the following schedule:

Case File 10.1 (Challenge 10A only) 7am, 20th December

Case File 10.2 (Challenge 10B only) 12pm 21st December

Case File 10.3 (Challenge 10B only) 12pm 22nd December

Case File 10.4 (Challenge 10B only) 12pm 23rd December

Case File 10.5 (Challenge 10B only) 12pm 24th December

Case File 10.6 (Challenge 10B only) 12pm 26th December

Case File 10.7 (Challenge 10B only) 12pm 27th December

Case File 10.8 (Challenge 10B only) 12pm 28th December

Case File 10.9 (Challenge 10B only) 12pm 29th December

Case File 10.10 (Challenge 10B only) 12pm 30th December

Case File 10.11 (Challenge 10B only) 12pm 31st December

Case File 10.12 (Challenge 10B only) 12pm 1st January

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