When you buy this book you get an electronic version (PDF file) of the interior of this book. You can play the puzzles in this book on your mobile phone! Become

Daniel Marchant, a suspended MI6 officer, is running the London Marathon. He is also running out of time. A competitor is strapped with explosives, and if he dr

Everyone knows sudoku is enjoyable--but these addictive puzzles come in endless variations too! They range from simple to very difficult, and can take almost no

When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Consecutive Sudoku. After solving all t

When you buy this book you get an electronic version (PDF file) of the interior of this book. You can play the puzzles in this book on your mobile phone! Sudoku