Cryptographic GCHQ Puzzle Grid

Cryptographic GCHQ Puzzle Grid Free Game

Rated 3.67/5 (6) —  Free Android application by Blundell Apps


About Cryptographic GCHQ Puzzle Grid

By solving this puzzle players will create an image that leads to a series of increasingly complex challenges.

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.

Getting started

In this type of grid-shading puzzle, each square is either black or white. Some of the black squares have already been filled in for you.

Each row or column is labelled with a string of numbers. The numbers indicate the length of all consecutive runs of black squares, and are displayed in the order that the runs appear in that line. For example, a label "2 1 6" indicates sets of two, one and six black squares, each of which will have at least one white square separating them.

This app won't tell you when the puzzle is complete, that is for you to work out yourself!

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How to Download / Install

Download and install Cryptographic GCHQ Puzzle Grid version 1.1.0 on your Android device!
Downloaded 1,000+ times, content rating: Everyone
Android package: com.blundell.shadingpuzzle, download Cryptographic GCHQ Puzzle Grid.apk

All Application Badges

For everyone
Android game

Game History & Updates

What's Changed
You can now partially shade a square if you aren't 100% sure you're right!
More downloads  Cryptographic GCHQ Puzzle Grid reached 1 000 - 5 000 downloads
Version update Cryptographic GCHQ Puzzle Grid was updated to version 1.1.0
More downloads  Cryptographic GCHQ Puzzle Grid reached 500 - 1 000 downloads

What are users saying about Cryptographic GCHQ Puzzle Grid

by B####:

Definitely an improvement with the ability to do a half or whole square.

by M####:


by G####:

Definitely an improvement with the ability to do a half or whole square.

by J####:

Once I've solved this all that's left is to learn how to zip myself into a duffel bag.

by R####:

There should be a second color for differentiating blank spaces from unsolved spaces. ............... Tried to clarify what I meant in an email, but the email was undeliverable.

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Rating Distribution

6 users