Vertical, Paperback, 9781934287484, 157pp.
Publication Date: April 28, 2009
Simple instructions are included at the front of the book to get one started along with some useful tips. The puzzles challenge on several levels, from one pencil--beginner--to five pencils--expert--all resulting in a sometimes quite elaborate picture. Many of the O'Ekaki puzzles in O'Ekaki Heaven have a spiritual theme to their outcomes. Still, don't be fooled; some of the more difficult puzzles can be downright devilish.
"Tetsuya Nishio is the undisputed grand ‘puzzle master’ of Sudoku: a bespectacled fiend from the darkest suburbs of Tokyo who spends his every waking hour devising abominable new ways to torture our brain cells. His only weapon is logic, but, in his own words, ‘it is a knife that kills.’ His commitment to deviousness is absolute." —The Times (U.K.)
"Tetsuya Nishio has one of the world's most creative puzzle-making minds. I'm a big
fan." --Will Shortz, Crossword Editor, New York Times; Puzzlemaster, NPR.