Jigsaw puzzles were originally created by painting a picture on a flat, rectangular piece of wood, and then cutting that picture into small pieces with a jigsaw, hence the name. Jigsaw puzzles have since come to be made primarily of cardboard. According to the Alzheimer Society of Canada, doing jigsaw puzzles is one of many activities that can help keep the brain active and may contribute to reducing the risk of developing Alzheimer's disease. Games 4 U offers a variety of puzzles for your enjoyment and entertainment. There’s nothing like working a puzzle on a snowy day with friends and family to while the hours away.