Ryoichi Murakami

Ryoichi Murakami is the founder and CEO of El Camino, a premier cram school in Tokyo. Many of his students go on to elite schools such as the University of Tokyo, and compete in the International Mathematical Olympiad. In addition to teaching at El Camino, Murakami is active in publishing, works as a puzzle maker, and writes questions for the Olympiad.

The Original Area Mazes
100 Addictive Puzzles to Solve with Simple Math—and Clever Logic!
by Alex Bellos, Naoki Inaba, Ryoichi Murakami
Paperback | $8.95 US / $11.95 CAN

Once you match wits with area mazes, you’ll be hooked! Your quest is to navigate a network of rectangles to find a missing value. Just Remember: Area = length × width Use spatial reasoning to find helpful relationships Whole numbers … Continue reading →

The Original Area Mazes, Volume 2
100 More Addictive Puzzles to Solve with Simple Math—and Clever Logic!
by Naoki Inaba, Ryoichi Murakami
Paperback | $8.95 US / $11.95 CAN

Hooked on area mazes? YOU’RE IN LUCK! Volume Two delivers 100 more puzzles. Your quest is to navigate a network of rectangles to find a missing value. Just remember: Area = length × width Use spatial reasoning to find helpful … Continue reading →

Amazing Area Mazes
70 Race-the-Clock Puzzles for Budding Math Wizards
by Naoki Inaba, Ryoichi Murakami
Paperback | $8.95 US / $11.95 CAN

Welcome, brave math wizard, to the world of area mazes. These clever grids of squares and rectangles are more than meets the eye. Can you find the missing value—using only your powers to add, subtract, multiply, and divide? Just remember: … Continue reading →

The Big Puzzle Book of Area Mazes
300 Mind-Bending Math Puzzles in Five Challenge Levels
by Naoki Inaba, Ryoichi Murakami
Paperback | $14.95 US / $19.95 CAN

Introducing a new puzzle obsession for sodoku lovers . . . amazing, absorbing area mazes. First invented for gifted students, area mazes blend grade-school math with genius logic. Put down that calculator! You can always find “?” using simple, whole … Continue reading →