This year’s GCHQ Christmas challenge invites the public to decode the names of UK landmarks, emphasizing collaboration and diverse thinking skills. Director Anne Keast-Butler encourages teamwork, while experts Bobby Seagull, Susan Okereke, and Dr. Barry R Clarke provide strategies for approaching the challenging puzzles. Seagull highlights the importance of letting ideas incubate, while Clarke shares insights on solving the puzzles through lateral thinking and analysis. The full challenge is accessible on GCHQ’s website.