The Hyphen Agency: A Book of Logic Puzzles baixar o livro de graça

Logical problems solved. Illogical problems sorted by colour.

On the third floor of the oldest building in town, between the lift and the broom cupboard, there is a door. Behind it works the Hyphen Agency: Lisa-Peter, who draws a grid for everything, and Klaus-Heidi, who guesses first and justifies later. Aristotle the tortoise solves every puzzle before anyone else, but has not yet finished saying a single answer.

Together the three of them take on 75 original logic puzzles in five series, from gentle warm-ups to proper brain-twisters:

• Logical Rows – classic grid puzzles: match people, places and things using the clues, all the way up to a full five-ship "Einstein" riddle
• Who Is Telling the Truth? – find the culprit when only some of the statements are true
• The Right Order – put runners, trains, lectures and planets in the only order that fits
• Secret Rules – number sequences, odd ones out, code words and sorting machines
• Impossible Situations – spot the contradiction in a story that cannot be true

What makes this book different

• Every series opens with a step-by-step How to Solve guide, so no experience is needed
• Every puzzle has exactly one solution, and every solution is fully explained, not just listed
• Ready-made answer grids are printed in the book, with plenty of room for notes
• Many puzzles include Klaus-Heidi's First Guess, which is almost always wrong. Finding the clue that knocks it over is half the fun
• Difficulty is marked on every puzzle: easy, medium, challenging and hard
• Large 8.5 × 11 inch pages

A funny, story-driven puzzle book for teens and adults, for families solving together, and for teachers who want ready-made reasoning tasks for the classroom.

Sharpen a pencil. Klaus-Heidi has already guessed.

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