We already have over 2,000 participants registered in over 1,000 teams from across the UK. We are very grateful to renowned author and script writer Anthony Horowitz for retweeting about the competition to help us widen our audience. (AH tweeted that his creation Alex Rider is a big fan of codes and ciphers – he is too modest, I happen to know he is a dab hand himself.) Challenge 1 is all set to go on Thursday at 3pm and there is still time to register. The first challenge this year is really really easy (part B is a bit trickier, but not much) so roll up your sleeves, sharpen your pencils and brains and get set to join the adventure.