Train Your Brain for the Age of AI!
50 Math & Logic Puzzles to Build Grit, Critical Thinking, and Problem-Solving Skills
AI can calculate, search, and follow rules in seconds. But when a problem is unfamiliar, complicated, or has no obvious path to the answer, how do you think your way through it?
This book contains 50 challenging math and logic puzzles designed to help you practice exactly that.
Rather than simply applying formulas, you’ll need to look for patterns, connect clues, test ideas, and sometimes try a completely different approach. The goal isn’t just to get the right answer—it’s to develop the patience and determination to keep thinking when the answer doesn’t come easily.
【What You'll Find Inside】
■ Build Grit by Thinking Through Difficult Problems
Some puzzles may take minutes to solve. Others may challenge you much longer. That’s part of the experience. Instead of immediately searching for an answer, give yourself time to experiment, make mistakes, rethink your approach, and try again. The satisfaction of finally solving a difficult puzzle on your own builds solid confidence—and the habit of staying with a problem when things get tough.
■ Turn Math Knowledge into Problem-Solving Skills
The puzzles cover a wide range of topics, including:
・ Number sequences and patterns
・ Geometry and area
・ Cryptarithms (Alphametics)
・ Fractions and number properties
・ Modular arithmetic
...and more!
You won’t simply be asked to plug numbers into a formula. You’ll need to ask: “What can I deduce from these conditions?”
That shift—from calculating to true reasoning—is at the heart of this book.
■ 50 Puzzles in 3 Progressive Levels
The challenges are organized into three tiers:
Beginner ➔ Intermediate ➔ Advanced
Start with accessible problems to build your confidence, then gradually take on more demanding puzzles.
Each puzzle is presented on its own page, followed by a step-by-step solution and clear explanation on the next page. The clean layout is optimized for smartphones and tablets, so you can enjoy a mental workout whenever and wherever you have a few minutes to think.
【Who Is This Book For?】
・ Middle schoolers and up (ages 11+) who enjoy math and logic challenges.
・ Adults and professionals looking to exercise their reasoning skills.
・ Puzzle enthusiasts seeking a satisfying and rigorous mental workout.
・ Anyone who wants to rediscover the genuine joy of mathematics.
In a world where answers are available instantly, solving a problem on your own before looking it up is a more valuable skill than ever.
Think Deeply. Keep Trying.
Turn the page and see if you can solve all 50!
■ About the Author
Hiro | LogiGrit Math
Creator of math puzzles and educational resources designed to help learners build logical thinking skills and "Grit."
・ Finalist, Japan Mathematical Olympiad (JMO)
・ M.S. in Engineering, Kyoto University
・ Former math tutor
・ Over 20 years of business experience (including 3 years working overseas)
Drawing from these experiences, I design materials that go beyond simple calculations, encouraging learners to embrace trial and error and discover the genuine joy of problem-solving.
