Nikoli has been creating puzzles for 40 years and is surely a one-of-a-kind company in the world.

We have created the world’s largest crossword puzzle that has been verified by the Guinness World Records ®, and have coined the puzzle, “Sudoku”, which is now enjoyed in more than 120 different countries.
Human-crafted puzzles will always have a special place in this tech-dominated world we live in today.

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……

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“Puzzle Communication Nikoli Vol.187”,“ChoGekikara (Really really hard) Sudoku 15” and “Nankan(Hard)Sudoku 15” are now on sale.
“Puzzle Communication Nikoli Vol.187” is the most advanced pencil puzzle magazine in Japan. The first issue was published in August, 1980.
“ChoGekikara (Really really hard) Sudoku 15” contains 91 sudoku puzzles.
“Nankan(Hard)Sudoku 15” contains 105 sudoku puzzles.
All our magazines and books are available at the “nikoli book shop” page.


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Selected 200 good Sudoku puzzles from Nikoli, the original home of Sudoku.