When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving different sizes of Masyu. You get the p

When you buy this book you get an electronic version (PDF file) of the interior of this book. Masyu is a fun and addicting logic puzzle game. This book is ideal

When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving different sizes of Nurikabe. You get th

When you buy this book you get an electronic version (PDF file) of the interior of this book. Numbricks is a fun and addicting logic puzzle game. It is very sim

When you buy this book you get an electronic version (PDF file) of the interior of this book. Numbricks is a fun and addicting logic puzzle game. It is very sim