Challenging pencil puzzlers

Challenging Puzzles

✍ Colin Vout, Gordon Gray 📂 Library 📅 1993 🏛 Cambridge University Press 🌐 English

This book contains a collection of original puzzles of a truly challenging nature. There are 100 problems and games; some may be done within five minutes, while others take considerably longer. Take off to Mars to help a dating agency, or stay closer to home with Snow White and the seven dwarfs. The

Challenging Science Puzzles

📁 Challenging Science Puzzles

✍ Erwin Brecher, Mike Gerrard 📂 Library 📅 1997 🏛 Sterling 🌐 English

Find the answers to over 100 fascinating quandaries involving heat, light, sound, and even outer space. All the puzzles are based on elementary science and involve things you're familiar with, like golf balls, kettles and carpets, so they're easy to understand and appreciate.

Challenging Math Puzzles

📁 Challenging Math Puzzles

✍ Glen Vecchione, Nina Zottoli 📂 Library 📅 1998 🏛 Sterling 🌐 English

Can quantum operations, recombinant shapes, and concealed distribution actually lead to fun? Sure they can! Just try these optical illusions, mechanical aptitude puzzles, maps and mazes. "Selections are interesting."-- School Library Journal.

Challenging Math Puzzles

📁 Challenging Math Puzzles

✍ Glen Vecchione 📂 Library 📅 1997 🏛 Sterling Publishing Company, Inc. 🌐 English

Can quantum operations, recombinant shapes, and concealed distribution actually lead to fun? Sure they can! Just try these optical illusions, mechanical aptitude puzzles, maps and mazes. "Selections are interesting."--School Library Journal.

The Ultimate Puzzle Book: Over 600 Chall

📁 The Ultimate Puzzle Book: Over 600 Challenging Puzzles

✍ Igloo Books (editor) 📂 Library 📅 2010 🏛 Igloo Books 🌐 English

Packed full with crosswords, wordsearches, mazes, sudoku, arrow-words and much more! This book will keep you entertained and test your patience and skills with over 600 tricky puzzles. Are you ready to take the challenge?

Brainteaser Physics: Challenging Physics

📁 Brainteaser Physics: Challenging Physics Puzzlers

✍ Göran Grimvall 📂 Library 📅 2007 🏛 The Johns Hopkins University Press 🌐 English

Does a glass of ice water filled to the brim overflow when the ice melts? Does the energy inside a sauna increase when you heat it up? What's the best way to cool your coffee -- adding the creamer first or last? These and other challenging puzzlers provide a fresh -- and fun -- approach to

✦ Synopsis