“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.