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  • The GCHQ Puzzle Book - Mathematical Logic Challenges | Paperback | 368 Pages
    New
    £17.49
    £17.49
    by GCHQ

    The GCHQ Puzzle Book - Mathematical Logic Challenges | Paperback | 368 Pages

  • The Times Ultimate Killer Su Doku Book 18: 200 of the Deadliest Su Doku Puzzles by Times Books
    New
    £10.21
    £10.21
    by The Times Mind Games

    The Times Ultimate Killer Su Doku Book 18: 200 of the Deadliest Su Doku Puzzles by Times Books

  • bright child books llc Another Logic Workbook for Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games | Ages 8-12 | Paperback
    £9.90
    £9.90
    by Dan Allbaugh

    bright child books llc Another Logic Workbook for Gritty Kids: Spatial Reasoning, Math Puzzles, Word Games | Ages 8-12 | Paperback

  • Originale Educ Logic Puzzles for Smart Teens - 200 Challenging Brain Teasers | Ages 12-17 | Paperback
    £15.01
    £15.01
    by Originale Educ

    Originale Educ Logic Puzzles for Smart Teens - 200 Challenging Brain Teasers | Ages 12-17 | Paperback

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