Pupils can have a code-cracking Christmas this year with the UK spy agency’s card from GCHQ.
Spymasters and codecrackers have compiled the festive puzzle card.
It has been sent out by Government Communications Headquarters boss Sir Jeremy Fleming to his global contacts and secondary schools, to give pupils a taste of the skills needed to be an agent.
A spokesman for GCHQ, which works in Cheltenham, Glos, said: “The puzzles are based on the seven disciplines of languages, engineering, codebreaking, analysis, maths, coding and cyber security.
“These are all key skills needed at GCHQ to help keep the country safe.”
Chief Sir Jeremy said: “This year’s GCHQ Christmas card challenge gives an insight into the skills we need every day as part of our mission.