The United Kingdom’s (UK) biggest spy agency, Government Communications Headquarters (GCHQ), has released its newest Christmas card — with a set of puzzles designed for young people who want to become secret agents in the future. Every year, the intelligence, cyber, and security agency shares a card containing a Christmas-themed brainteaser to national security colleagues and partners across the globe. But this year’s card is full of puzzles for schoolchildren between the ages of 11 and 18. The security agency’s director Jeremy Fleming explained that he wants to encourage more students to take on science, technology, engineering, and mathematics (STEM) skills and help develop the next generation of talent. “I want to show young people that thinking differently is a gift, and it is only with a mix of minds that they can solve seemingly impossible problems, just like we do at GCHQ,” he said. The answers to the Christmas puzzle will also be posted on GCHQ’s Instagram account and official website. The security organization is based in Cheltenham, a town in Gloucestershire, England.