To celebrate Conundrum, my book of codes, ciphers and challenges, being given a shiny new cover I have published a new Cracking Christmas Challenge - a four-part puzzle to stretch your mental muscles. Entry is free - all successful entries received by noon UK time on 15 December get on the hall of fame, with a surprise prize for a winner chosen at random.
A spy has been given four Christmas-themed clues to establish the address, time and date of a secret meeting. There are four clues because one piece of information is enciphered, and one of the other solutions is the key.
Here are the first two clues to whet your appetite:
Clue 1: Drummers' day.
Clue 2: Village where a warlock started for Bethlehem. Down the pub: where a lost plough is replaced by a nautical vessel.
For more details, all the clues, and to enter, see the Conundrum Bonus Puzzle page.
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