GCHQ release puzzle book filled with 'world's hardest brain teasers' for Christmas

This article is from the source 'independent' and was first published or seen on October 19, 2016 11:30 (UTC). It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at http://www.independent.co.uk/news/uk/home-news/gchq-puzzle-book-worlds-hardest-brain-teasers-christmas-release-a7369031.html

The article has changed 1 times. There is an RSS feed of changes available.