Important: C3L6 and GDPR
An email has been sent to all primary contacts in schools concerning GDPR. All the existing contact data we hold will be deleted on WEDNESDAY MAY 23rd. All teachers wishing to enter students for the 2018 competition will need to re-register by entering their contact data and giving permission for us to hold this data. Teachers may re-register from THURSDAY MAY 24th until Friday June 1st.
After five successful years of online challenges, there are 180 puzzles that are available to students and teachers. The entry level question for one of the challenges, chosen at random, is shown above. The other challenges can be found by clicking "The Online Challenge" panel below. We hope you have enjoyed the challenges as they came out, however, there are no plans to release new puzzles.