Our third Pocket Posh Hidato collection presents one hundred challenging puzzles in five difficulty levels. Hidato(R) is a pure logic puzzle that is easy to learn and difficult to master, making it the perfect challenge. Each hidato puzzle starts with a grid partially filled with numbers. The goal is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. Hidato can be solved using 100 percent logic and requires no math or guesswork. You need only careful thought and determination to solve Hidato(R) puzzles. This 100-puzzle collection delivers hours of mind-sharpening fun. This attractive, tidy package is sized for portability and is part of our best-selling series of puzzle books that feature highly stylized, embellished covers and boast 5 million copies in print.