Nurikabe is a fun and addicting binary determination puzzle. This book is ideal if you know how to play Nurikabe no matter their size, but you find our hard Nurikabe puzzles too difficult. You get the perfect mix of different sizes of Nurikabe to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Nurikabe Mixed Grids - Medium is a collection of 276 puzzles: I guarantee that every logic puzzle in this Nurikabe puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Nurikabe is also known as Cell Structure, Islands in the Stream.