Codewords: Book 1

Tired of looking at screens? Enjoy word challenges? Like problem solving? If your answers are yes, yes and yes then codewords are for you!
Codewords give stimulating challenges. They are absorbing, fascinating, satisfying and fun.
They are also frustrating and amusing - for example, when the word "_ _ YM _", which you were convinced should be "RHYME", turns out later to be "THYME" and you have been hoodwinked!
You will find lots of words you had forgotten you knew.
Try them - you don't need to be Alan Turing to succeed!

The author taught Mathematics for 23 years in schools and then in Durham University. He went on to be Staff Inspector for Mathematics, and in 1990 turned to writing. He has had about 70 mathematics books published, mainly by Hodder Headline and Cambridge University Press.