Each piece usually has a small part of a picture on it; when complete, a jigsaw puzzle produces a complete picture. Many participants begin by sorting pieces by color and edge pieces. Edge pieces are those with a flat side, which will form the puzzle’s border. Make sure you have the picture (solution) of the puzzle for them to look at. For individuals with more advanced dementia, puzzles with larger pieces and fewer total pieces (e.g., 12 pieces) may be more suitable.