“Nankan(Hard)Sudoku 15”
contains 105 sudoku puzzles.

“Just Right! Sudoku (a bit hard) 4”
contains 105 Sudoku puzzles, most of which are of medium difficulty.

“Crossword puzzles with various themes”
Crosswords on various themes. You need Japanese to do them.

“Have a Ball with Pencil Puzzles—Kakuro for Expert4”
contains over 90 Kakuro puzzles for experts.

“Have a Ball with Pencil Puzzles—Slitherlink for Expert4”
contains over 90 Slitherlink puzzles for experts.

“Everyday Word search puzzle—Seekwords of Nikoli”
This is a puzzle book where you can enjoy the word search puzzle “Seekwords” to your heart’s content!
These Seekwords were published in the NIKOLI “Pencil Puzzle Book” and have been re-edited with the excellent results published here.

“Puzzle Communication Nikoli Vol.186”
Nikoli is the most advanced pencil puzzle magazine in Japan. The first issue was published in August, 1980.

“Nikoli Puzzle Book Reprint Edition Kakuro 2”
The puzzles in this volume are all the puzzles of “Pencil Puzzle Book Kakuro Vol.11”. This volume contains 92 puzzles.

“Nikoli Puzzle Book Reprint Edition Slitherlink 2”
The puzzles in this volume are all the puzzles of “Pencil Puzzle Book Slitherlink Vol.11”. This volume contains 96 puzzles.

“Sudoku Communication Vol.46”
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.