This great collection of extra large griddlers puzzles (aka: Picross, Nonograms) features extra big puzzles with Grid over 50 squares (width and/or height). This challenge logic puzzles will give hours of pure brain workout and will reward you with beautiful images reveal as you solve. iGridd puzzles, also known as Griddlers or Nonograms, are picture logic puzzles in which cells in a grid have to be colored or left blank according to numbers given at the side of the grid to reveal a hidden picture. Some people compare Griddlers to Sudoku. However, the Griddlers puzzles always reveal a nice image as a result.This book consists of 91 Griddlers puzzles of size exceeding 50 cells. The solutions of the puzzles appear at the end of the book.