“Masterpiece selection of “Slitherlink for the very best” Vol.2”
This book contains over 100 challenging Slitherlink puzzles carefully selected from previous editions.

“Sudoku Communication Vol.51”
This is a biannual Sudoku magazine with puzzles ranging from easy to hard. It also includes some articles related to hard Sudoku.

“Masterpiece selection of “Kakuro for the very best” Vol.2”
This book contains over 100 challenging kakuro puzzles carefully selected from previous editions.

“Tentsunagi (Dot to Dot) Special”
This book contains over 50 puzzles where you connect the dots in the order of the numbers to create a picture.

“Sudoku & Logic Puzzles for Home Vol.12”
“Sudoku & Logic Puzzles for Home Vol.12” contains about 80 puzzles, mainly Sudoku and Logic Puzzle.

“Otegaru Kakuro”
This book contains 60 Kakuro puzzles ranging from easy to medium.
All the included puzzles are reprints from “KAKURO (Large letters — clear & easy)”.

“Nankan(Hard)Sudoku 19”
“Nankan (Hard) Sudoku” contains 105 sudoku puzzles.

“Puzzle Communication Nikoli Vol.195”
Nikoli is the most advanced pencil puzzle magazine in Japan. The first issue was published in August, 1980.

“Cho (Super) Puzzle Box”
It contains about 60 kinds of pencil puzzles, including some Japanese word puzzles.

“ChoGekikara (Really really hard) Sudoku 19”
“ChoGekikara (Really really hard) Sudoku” contains 91 sudoku puzzles.