“A Book of Word Puzzles for Preschoolers”
This book is for preschool children to enjoy puzzling with language.

“A Book of Number Puzzles for Preschoolers”
This book is for preschool children to enjoy puzzles using numbers.

“Sudoku Communication Vol.48”
This is a biannual Sudoku magazine with over 100 puzzles ranging from easy to hard. It also has a few puzzles other than Sudoku and articles related to Sudoku.

“Nikoli Puzzle Book Reprint Edition Slitherlink 3”
The puzzles in this volume are all the puzzles of “Pencil Puzzle Book Slitherlink Vol.12”. This volume contains 96 puzzles.

“Puzzle the Giants Vol.38”
This is the 2025 edition of the annual book of giant-size puzzles. This issue contains over 30 types of puzzles, about 100 in total. Please note that some of the puzzles are in Japanese.

“Sudoku & Logic Puzzles for Home Vol.9”
“Sudoku & Logic Puzzles for Home Vol.9” contains about 80 puzzles, mainly Sudoku and Logic Puzzle.

“Puzzle Communication Nikoli Vol.189”
Nikoli is the most advanced pencil puzzle magazine in Japan. The first issue was published in August, 1980.

“ChoGekikara (Really really hard) Sudoku 16”
“Cho-Gekikara (Really, really hard) Sudoku” contains 91 sudoku puzzles.

“Nankan(Hard)Sudoku 16”
“Nankan (Hard) Sudoku” contains 105 sudoku puzzles.

“Have a Ball with Pencil Puzzles – Slitherlink4”
This book contains about 90 slitherlink puzzles ranging from easy to hard.