# A puzzly British Christmas card!

One government agency in England celebrates Christmas a little bit differently than most.

The GCHQ — Government Communications Headquarters — provides security and intelligence services for the British government. Back when they were known as GC&CS — Government Code and Cypher School — they were responsible for funding the Bletchley Park successes cracking the German “Enigma” code during World War II.

And for Christmas this year, they’ve released a puzzly Christmas card that’s sure to challenge even the staunchest puzzlers.

Step 1 of the puzzle is a logic art puzzle where you have to deduce where to place black squares on an open grid in order to form a picture.

Each column and row has a series of numbers in it. These numbers represent runs of black squares in a row, so a 1 means there’s one black square followed by a blank square on either side and a 7 means 7 black squares together with a blank square on either side.

Once you’ve solved this puzzle, you can use it to unlock the next puzzle in the chain.

From an article on GCHQ.gov.uk:

Once all stages have been unlocked and completed successfully, players are invited to submit their answer via a given GCHQ email address by 31 January 2016. The winner will then be drawn from all the successful entries and notified soon after.

Players are invited to make a donation to the National Society for the Prevention of Cruelty to Children, if they have enjoyed the puzzle.

This is one majorly challenging Christmas card. After you’ve conquered the logic art puzzle, you’ll confront brain teasers, palindromes, pattern-matching, deduction, number progressions, codebreaking, cryptic crossword-style cluing, and more.

I would highly recommend teaming up with another puzzle-minded friend (or more) and trying your luck. Let us know how far you get! (And you can hit up this article from the Telegraph for aid as well.)

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# PuzzleNation Live Game #3: Answers!

As promised, here are the answers to Friday’s PuzzleNation live game, a.k.a. the Progressions challenge! Thank you to everyone who gave it a shot. I look forward to doing another live puzzle game soon!

(And for anyone who didn’t get a chance to play, you can check out the original puzzles on our Facebook and Twitter accounts!)

1.) 18  25  28  35  ______  45  48  55  58

Answer: 38 (+7 +3 +7 +3 +7 +3 +7 +3)

2.) 92  91  89  85  ______  76  74  70  62

Answer: 77 (-1 -2 -4 -8 -1 -2 -4 -8)

3.) 64  71  78  83  ______  91  94  95  96

Answer: 88 (+7 +7 +5 +5 +3 +3 +1 +1)

4.) 81  162  54  108  ______  72  24  48  16

Answer: 36 (x2 /3 x2 /3 x2 /3 x2 /3)

5.) 22  23  28  33  ______  35  40  45  46

Answer: 34 (+1 +5 +5 +1 +1 +5 +5 +1)

6.) 242  121  123  41  ______  11  15  3  8

Answer: 44 (/2 +2 /3 +3 /4 +4 /5 +5)

7.) 15  9  18  14  ______  22  44  40  80

Answer: 28 (-6 x2 -4 x2 -6 x2 -4 x2)

1.) 39  43  49  52  ______  63  69  72  79

Answer: 59 (+4 +6 +3 +7 +4 +6 +3 +7)

2.) 9  17  25  23  ______  29  37  35  33

Answer: 21 (+8 +8 -2 -2 +8 +8 -2 -2)

3.) 108  104  52  48  ______  20  10  6  3

Answer: 24 (-4 /2 -4 /2 -4 /2 -4 /2)

4.) 58  49  52  44  ______  40  43  35  40

Answer: 49 (-9 +3 -8 +5 -9 +3 -8 +5)

5.) 31  22  66  57  ______  162  486  477  1431

Answer: 171 (-9 x3 -9 x3 -9 x3 -9 x3)

6.) 46  47  49  46  ______  47  53  46  38

Answer: 42 (+1 +2 -3 -4 +5 +6 -7 -8)

7.) 4  16  18  6  ______  28  30  10  11

Answer: 7 (x4 +2 /3 +1 x4 +2 /3 +1)

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