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Test yourself against a fiendishly tricky series of IQ test-style puzzles, the perfect training for those who want to prepare for a Mensa IQ test ...
Prove your logical and arithmetical prowess by solving the exceptionally tricky problems in Mensa's Most Difficult Number Puzzles.
This full-colour book features a huge ...
Will you be one of the few who can prove Alex wrong?
I hope you get every puzzle in this book wrong.
I'm being ...
The definitive puzzle book from the top-secret British intelligence organisation, GCHQ
GCHQ is a top-secret intelligence and security agency which recruits some of the very ...
The brain-busting follow up from the UK's finest code-breakers and puzzle solvers at GCHQ, now available in a handy paperback
GCHQ are back with ...
A delightfully perplexing collection of challenges from throughout history, featuring some of the greatest-ever puzzle masters
From the riddles of the ancients to puzzles that ...
Problem-solve under pressure and spot the imposter in time. An immersive puzzle book experience.
Step inside the book and get ready to start a compelling ...
With over 70 tactical puzzles to solve, get ready to go behind enemy lines and tackle the elite missions only the toughest minds can solve ...
Challenge yourself with number puzzles
For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy ...
An essential resource for all Scrabble enthusiasts
Not sure if a word is valid in Scrabble play?
Collins SCRABBLE (TM) Dictionary is fully updated to ...
The ultimate Scrabble bible!
The latest official Scrabble word list, endorsed by governing body WESPA for use in tournament and club play, contains all valid ...
The ideal gift for all word puzzle enthusiasts!
250 fun puzzles for word game lovers. Based on techniques required for Scrabble, these challenges have been ...
200 mathematical and logic puzzles to test your mental dexterity with this collection from The Times. Just like a mathematical ...
Relive the glory of past crossword puzzles
100 years old in 2025, The Sunday Times Crossword is the oldest of the broadsheet newspaper crosswords which ...