ler totalmente The Hyphen Agency: A Book of Logic Puzzles

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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