Obviously there are many ways to stimulate the brain such as reading, crosswords or playing mind teasers such as Sudoku. Card games have the added benefit of socialization as well as deductive reasoning. It has been recently brought to light that physical exercise and diet rather than mental feats alone will help prevent the onset of dementia.

Nevertheless it is the unexpected benefit of assembling a jigsaw puzzle that carries unique observational, cognition and motor skills making the pastime distinct. Puzzle manufacturers have seen the median age of the puzzle consumer advancing and (not through any act of altruism) have been developing more puzzles with extra large pieces. Typically an extra large piece puzzle will have 500 pieces and will be the same size as a regular 1000 piece puzzle. The images tend to be brightly colored with well defined sections and with pieces whose shapes tend not to be so similar.

Learning, consolidation, storage and recall are the four distinct stages of memory. Without the ability to recall it is impossible to determine the deterioration (or lack thereof) of the other three stages in an individual. If the mind of a healthy puzzler can put together a 1000 piece puzzle in less than one hour (which is a regular competitive feat) then by encouraging those same learning and consolidation techniques in a senior there is every reason to believe a cognitive benefit will be gained.