New publication image

What's New

"The Pencil Puzzles 2020" is now on sale.

"The Pencil Puzzles 20xx" series are the renewal versions of our best sellers "Penpa 20xx" series. The book contains about 260 number puzzles, includes English explanation.
All our magazines and books are available at the "Purchase Nikoli Books" page.

Announcement of major maintenance work Nov 5, 2019

From the early morning of 7th November (Japan time), there will be maintenance work on our web server.
Because of that, it will be difficult to access our pages for maybe 24 hours before and after the maintenance work.
We are sorry about any inconvenience during this period.
Thank you for your patience and understanding.

SmartNikoli for iOS!

We has released our puzzle app "SmartNikoli" for iOS.
You can enjoy Akari and Sudoku puzzles!
Please download our app on App Store!

SmartNikoli for Android!

We has released our puzzle app "SmartNikoli" for Android.
You can enjoy Akari and Sudoku puzzles!
Please download our app on Google Play Store!
* We will release "SmartNikoli" for iOS at a later date.

Let's Begin Nikoli Puzzles!

A lot of people enjoy solving puzzles every day to escape the pressures of the world. With Nikoli logic puzzles you need just paper, pencil, and an active mind, no expensive programs or training......

>>Let's Begin Nikoli Puzzles!

What is Nikoli?

The first puzzle magazine in Japan was published in August, 1980, this magazine was "Nikoli." So, yes, we are the pioneers in this field in Japan. Nikoli is now the company "NIKOLI Co., Ltd."

Since that first magazine, we have been publishing puzzle magazines and books and supplying original puzzles to other publications (newspapers, weekly and monthly magazines). We are constantly studying and inventing new puzzles and have created over 200 kinds of original puzzles.

We confidently assure you that among Japanese puzzle solvers, Nikoli stands for fantastic puzzles.