**'Title of Most Fiendish Book goes to Conundrum: Crack the Ultimate Cipher Challenge by the ever-excellent science writer Brian Clegg.' Daily Mail, Books of the Year**



The ultimate trial of knowledge and cunning, Conundrum features 200 cryptic puzzles and ciphers. The solutions link throughout the book - so you need to solve them all to get to the final round. 



With a focus on ciphers and codebreaking, Conundrum contains twenty sections, each built around a specific subject from music to literature, physics to politics. To take on Conundrum you need good general knowledge and the ability to think laterally. But if you need help, there are plenty of hints to point you in the right direction.



Whether you attempt to crack it alone or work in a team, Conundrum will challenge you to the extreme.



Can you take on Conundrum and win? There's only one way to find out.

Brian Clegg's most recent books are The
Reality Frame (Icon, 2017), What Colour is the Sun? (Icon, 2016) and
Ten Billion Tomorrows (St Martin's Press, 2016). His Dice World
and A Brief History of Infinity were both longlisted for the Royal
Society Prize for Science Books. He has also written Big Data and Gravitational Waves for Icon's
Hot Science series. Brian has written for numerous publications including The
Wall Street Journal, Nature, BBC Focus, Physics World, The Times and The
Observer. He is editor of popularscience.co.uk and blogs at
brianclegg.blogspot.com.