1. Mensa's Most Difficult Maths Tests, Prove Your Arithmetic Prowess By Solving The Toughest Numerical Puzzles

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  2. All-New Sudoku 1

    All-New Sudoku 1

    The Guardian

    from11,08 € at 2 stores

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  3. Quick Crosswords 1

    Quick Crosswords 1

    The Guardian

    from11,08 € at 2 stores

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  4. Test Your Mind, Twenty IQ Tests From The Masters of Intelligence

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