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DR GARETH MOORE

Bestselling international puzzle and brain-training author
"Britain's King of Puzzles" –The Sun

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Mensa's Most Difficult Number Puzzles: Prove your logical and numerical abilities against 200 fiendish problems

Welbeck, 2022

Mensa's Most Difficult Number Puzzles: Prove your logical and numerical abilities against 200 fiendish problems

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