At 3pm on Thursday 10th October we will publish Challenge 1. It will consist of two parts, Part A and Part B, and you can attempt either, neither or both. If you are the team captain for your team (which you will be if you are the only member of your team, and might be otherwise) then you will see a submission box and button underneath the cipher text for each part. All(!) you have to do is decipher each part, paste your decrypt in the box and press submit.
If you get the decryption right we will tell you straight away, otherwise we will give you an idea of where your decrypt starts to go wrong and you can try again.
Remember that the first three challenges are to get you started and don’t count for the overall competition. Also, the prizes and medals are awarded for performance in the part B challenges from Challenge 4 onwards. You can still download certificates for any Part A challenge you attempt, but the scores for those are separate.
If you have any questions, do post them in the Forum.