The object of Slitherlink is to draw a single line along the grid lines in order to obtain a single closed loop without intersections, branches or breaks. The number inside the square indicates the number of cell-lines that can be located on the perimeter of that cell. Volume #6This book contains 150 Hard 20x20 puzzles, 1 per page.We are sure you will find these puzzles offer an entertaining yet effective way to exercise your brain and keep your mind sharp. All puzzles have been checked to ensure there is only one valid answer. We never duplicate a logic puzzle in any of our books.Our books are printed on high quality 60 lb paper.Find more pencil puzzle books on Brainy's website!www.BrainysLogicPuzzles.com
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