The Guardian Book of Sudoku

For SUDOKU aficionados, here are
200 puzzles hand-created in Japan\nThe Sudoku craze began with the publications of puzzles in the British newspaper The Guardian. Their source was Nikoli Publishing in Japan, also creators of the puzzles herein, which have never before been published, as they were created on behalf of The Guardian expressly for this book.\nSudoku addicts rate these puzzles - created by hand - as superior to those created by computer programs. Ranging from Easy to Hard, they contain, in their layout, almost imperceptible witticisms and symmetrical patterns that reveal themselves as they are solved, and enhance the pleasure of completing them.\nWith a witty and helpful introduction by Tim Dowling, The Guardian Book of Sodoku will bring you hours of highest-quality pleasure.