“Kanji Puzzle Collection 1” This book comes with 19 kinds of puzzles using kanji.
“Sudoku Communication Vol.42” This book contains about 120 well-crafted sudoku problems. Also, some extra problems and columns.
“Sudoku & Logic Puzzles for Home Vol.2” contains about 100 puzzles, mainly Sudoku and Logic Puzzle.
“Puzzle the Giants Vol.35” contains over 30 kinds of giant-size puzzles, including some word puzzles in Japanese.
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