36 Piece Gas Station Puzzle for Those with Early Alzheimers or Dementia Conditions. What do you buy a loved one for Christmas or birthday if they have moderate dementia or the beginning stages of Alzheimer's disease? They still enjoy participating in family celebrations or Christmas, so you don't want them to feel left out. Try this gas station 36 piece jigsaw puzzle. The pieces are much bigger than regular pieces ( 4 1/2 inches wide by 3 inches tall) to reduce their frustration at trying to put the puzzle together. Because it is just 36 pieces, it will be manageable for many with those conditions. The puzzle when complete will measure 18" by 23.5" inches. Older men will especially enjoy this image of an old fashioned gas pump with advertisements for coffee on them.