Nonograms are also known by many other names such as Japanese Crosswords, Picross, Hanjie or Griddlers. They are picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the side of the grid to reveal a hidden picture.This Nonogram Puzzle Book is a fun way for teens or adults to sharpen their minds and test their logic. Including Puzzles of varying size and difficulty to keep you entertained for hours.This Nonogram Puzzle Books for Adults contains 50 Puzzles Single Sided Pages !