What's New
You can now partially shade a square if you aren't 100% sure you're right!
About Cryptographic GCHQ Puzzle Grid Android Game
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.
Other Information:
Download
This version of Cryptographic GCHQ Puzzle Grid Android Game comes with one universal variant which will work on all the Android devices.
All Versions
If you are looking to download other versions of Cryptographic GCHQ Puzzle Grid Android Game, We have 1 version in our database. Please select one of them below to download.
