Challenge yourself with these maths and logic problems, all rated 'most difficult'
Each day you'll be introduced to a new type of puzzle and shown how to solve one or two examples, before tackling the increasingly challenging puzzles by yourself.
Ever walked into a room and then forgotten why you went in there? Are you forever misplacing your purse or car keys? Do you increasingly forget the names of people and places?
It doesn't have to be this way!
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Train your mind and memory with these guided puzzle and brain-training books, designed for a 40-day workout.
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This brain-sharpening book by Rita Carter features over 150 puzzles that I've written. It's also packed full of activities to keep the mind sharp and your memory ticking over.
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Practise these proven techniques to sharpen your mind and improve your memory skills - co-written with Helena Gellersen
Train your brain and keep you mind sharp with this range of books, jam-packed full of puzzles
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Or try these other titles, each designed to keep your mind ticking and your memory sharp
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For younger brain-trainers: