That is true, we have done that in the past. This year we are going to let everyone register and take part then deal with eligibility when it comes to awarding prizes later. All part of our drive to cut down the data we collect and store. We are still asking for ages, but they are not stored with individual accounts, just used to monitor the profile of the cipher challenge community. You didn’t miss anything!
(First to post by the way, well done!)
Harry