Link-a-Pix: 35 Mosaic Logic Grid Puzzles For Adults and Kids (Paperback) (ISBN-13: 9798648028388)

As you progress through each puzzle a image will start to appear. This puzzle book contains 35 puzzles on 60 x 60 which are great for image quality and create the perfect challenge ranging from medium to hard.

Link-a-pix are grid puzzles with single numbers. Pairs of numbers must be "linked" correctly with a line filling a total of squares equal to that number. For example, squares containing "4" represents paths that are 4 squares, "6" represents paths are "6" squares etc... Paths may follow any horizontal or vertical direction. Paths are not allowed to cross each other. There is only one unique way to link the squares into a picture. When completed, the contrast between the filled and blank squares reveals the pictures.