Chapter 1: Challenge the Shape Puzzle
Matchstick puzzles / One-stroke drawing problems / Maze puzzles / Chain necklaces / Codes and blocks / Number of circles / Division of pentagrams / Division of pizza / Equal division of shapes / Equal division of cake / Trisection of angles / Division of the Taegeuk pattern / Measurement of 1/6 do / Problems of length and area / Shortest distance / Division of land / Pyramids and regular tetrahedrons / Magic cubes / Solutions to Chapter 1

Chapter 2: Challenge the Calculation and Logic Puzzles
Fill in the blanks / Masked Mountain / Number game / Magic square / Mosquito coil problem / Clock problem / Scales problem / Game winning strategy / Yes or No puzzle / Locker door / Check distribution / Party handshake

Chapter 3: Challenge the Probability Puzzle
Dice game / Number of games in a tournament / Number of games in a league / Trump vs. the universe / Heads and tails of a coin / Probability of passing / Infinite probability / Probability of odd and even numbers / Black hole problem / Probability of a strikeout / Spaghetti triangle / Probability of gambling

Chapter 4: Challenging the Paradox
Olbers' Paradox / Achilles and the Tortoise / Schrödinger's Cat / The Cretan Lie Paradox / A Proof of 2=1? / Hilbert's Infinite Hotel / The Dilemma of Cooperation and Betrayal / Newcomb's Paradox / The Lightning Test Paradox / The Twin Paradox / The Voting Paradox / Hempel's Crow

1.
Significance of publication
Develop logical thinking skills needed for math!

'The easiest subject is math.'
This is one of the things that students who are good at studying often say.
What's the context for this statement? Perhaps it's because mathematics doesn't require the effort of cramming a vast amount of knowledge from diverse subjects into your head.

In fact, the basis of mathematics is the ability to think logically.
Mathematics is not a field where you can simply memorize a few formulas and apply them.
On the other hand, if you have the ability to think logically while understanding the basic principles and definitions, it is also a field in which you can naturally understand various applied logics that develop based on them.

So, isn't there a good way to develop the logical thinking skills necessary for math? Yes, there is.
I think one of the most representative methods among them is studying mathematical puzzles and logical paradoxes.
Math puzzles are designed to develop logical thinking skills through the process of analyzing the core of the problem and deducing its solution.
Also, a paradox refers to a conclusion that is difficult to understand from premises or logic that are considered correct.
By tracing why such a conclusion is reached, you can also cultivate logical thinking skills.


This book covers everything from classic puzzles that have been known for a long time to new puzzles, and from easy to difficult in terms of difficulty.
Meanwhile, by introducing various materials such as geometry, calculation, probability problems, and logical paradoxes by field, it is structured so that you can solve problems while having fun.

Chapter 1 consists of various geometric puzzle problems, such as division and equalization of shapes, and problems related to length, area, and volume.
Chapter 2 introduces puzzles that can be solved by calculation and puzzles that can be solved by logical thinking.
Challenge yourself with calculation puzzles using clocks and scales, as well as logic puzzles set to various settings.
Chapter 3 is the probability puzzle corner.
It consists of puzzles using dice, cards, and coins, as well as problems that involve gambling odds and have results that are completely different from our intuition.
Chapter 4 is a chapter on logical paradoxes.
We challenge the 'pseudo-paradox' that arises because the premise or logic is wrong, and the 'real paradox' that arises because two conflicting conclusions are reached even though both the premise and logic are correct.

In addition, it provides full-color illustrations that clearly illustrate the core concepts and detailed explanations by experts, allowing readers to naturally train their brains.

The appeal of math puzzles lies not only in the fact that they help develop mathematical imagination, but also in the incomparable pleasure they provide when solving a problem on your own.
I sincerely hope that this book will serve as an opportunity to develop logical thinking skills while enjoying mathematics.

2.
Special feature

● Systematic composition based on shapes, calculations, probability, and paradoxes
There are many different types of math puzzles.
This book provides a variety of puzzles, covering not only the most common types of puzzles, such as calculation and shape puzzles, but also puzzles about probability, each covered in a separate chapter.
Another special thing is the logical paradox.
Through paradoxes such as 'Achilles and the Tortoise', 'Proof of 2=1', and 'Twin Paradox', which lead to incomprehensible conclusions even though the premises seem to be correct, you can train yourself to think more logically.


● Clear explanations that hit the core of the logic and illustrations that can be understood at a glance
Mathematics, along with science, is a field that requires an understanding of principles.
Even in math puzzles, it is extremely important to clearly understand the process of arriving at the solution.
Here too, Newton's expertise in presenting principles at a glance using graphics is fully demonstrated.
In addition, by clearly explaining the core of the process leading to the conclusion, it is structured to not only stimulate interest but also to help build a foundation in mathematics through puzzles.

● Experts from various fields, including mathematics, logic, and game theory, participated in the production.
Math puzzles are not just word puzzles.
It must be designed elaborately so that students can learn and master the various contents of mathematics and logic.
This book contains not only long-known "masterpiece puzzles," but also problems designed and explained by experts in various fields such as mathematics, logic, and game theory.
These are 'deeply researched' problems that can be considered the essence of mathematical puzzles.

Problems of varying difficulty, from easy to 'global challenges'
No matter how good the foods are, it would not be desirable if they had similar tastes and nutrients.
One of the most important things in math puzzles is the attitude to try to solve them on your own.
Even if you don't get the right answer, your mathematical imagination and logical thinking skills will be developed as you try to solve the problem on your own.
It is designed to allow you to solve problems of various difficulty levels, from basic problems to those that have become global topics of conversation.

● The 'Newton Highlights' series, published one volume per month
『Newton』 is a monthly science magazine that delivers the latest developments in all fields of science with expert commentary, rare photographs, and outstanding illustrations.
Among them, the 'Newton Highlights' series is a series that reorganizes articles that have received favorable reviews from readers by topic and publishes them as a single volume every month.
Other sister volumes of Newton Highlights, such as 『Theory of Relativity』, 『Quantum Theory』, 『The Periodic Table』, 『The Human Body - 21st Century Anatomy』, 『The Structure of the Brain and Mind』, 『The Mysterious World of Mathematics』, and 『Differential and Integral Calculus』, are also selling well.