The GCHQ (Government Communications Headquarters, Headquarters Government Communications in Castilian) is one of three British intelligence services, such as MI6. His Christmas card this year not a cheerful and decorative card (also) but this complex puzzle Can you solve it?
As can be read in the official description of the puzzle is just the beginning of a series of more complex problems: ?? Solving this puzzle players first create an image (Track) that will lead to a series of even more complex ?? challenges. The instructions are simple:
In this type of puzzle, each square is either white or black. Some who are black and have been filled by you. Laughter or each column is labeled with a series of numbers. The numbers indicate the length of all blocks of consecutive black squares, shown in the order in which these blocks are then. For example, the label ?? 2 1 6 ?? It indicates three blocks of 2, 1 and 6 black squares, each of which shall have at least one white square apart.
Recalling that not only a riddle but several, possible solutions to these can be sent both at GCHQ until the end of January 2016. The address you need to send, curiously, is revealed in the course of solving the puzzle. There is a high resolution version here. Good luck (and happy holidays too).
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