The GCHQ Challenge

GCHQ have set a Code Cracking Challenge for The Times Cheltenham Science Festival 2011

The competition has now closed. But you can still try to crack the code and see the solutions by clicking below.

GCHQ CHALLENGE AND SOLUTIONS 

The solutions will be revealed one at a time - day by day - during the 6 days of the festival (7-12 June 2011)

You can also join Nick from GCHQ, who set the challenge, 10am on Sunday 12 June at The Times Cheltenham Science Festival where he will explain how to crack the code.