Intelligence He opened a quiz on Christmas cards

Instead of the image of Santa and reindeer appearing on the front of a traditional Christmas card for a long time, British security and intelligence agency GCHQ designed a greeting card in the form of a cryptographic puzzle and Encourage people to decode it.

Intelligence He organized a contest on cryptography puzzles on Christmas cards

GCHQ spokesman, said the director of the agency - Robert Hannigan, decided to put cryptographic puzzles on this year's Christmas card to help people "train gray" during the holidays. More specifically, GCHQ also opened a quiz for all participants.

Cryptographic puzzle on GCHQ's Christmas card this year.(Photo: Daily Mail).

For cryptographic puzzles , participants will have to fill in an encrypted table to reveal the picture below, which is just the beginning of a series of more challenging puzzles. In this form of table puzzle, each square will be black or white. Some black squares have been filled out.

Each row or column in the table is assigned a series of numbers. Numbers refer to the length of all consecutive black series and are displayed in the order of the strings that appear in that row or column. For example, the string "2 1 6" refers to strings consisting of 2, 1 and 6 black squares with each string having at least one white square separating them.

If the puzzle is successfully decoded and the player can find answers to all subsequent puzzles, they are invited to submit their answers to a GCHQ-specified email address by the 31st deadline. / 1/2016. The name of the winner will be announced soon after that time.

It is still unclear what the prize for the winner of GCHQ's quiz competition is. However, the contestants were invited to donate to the National Association for the Prevention of Child Abuse - the organization that GCHQ director chose to do charity this year.