Tips on solving Sudoku puzzles

I am giving a talk on "Tips to solve Sudoku puzzle" at 2 p.m at the Active Aging Carnival, held outside Singapore Plaza (Dhoby Ghaut MRT station).

My tips involve using the left and right brain. Many people think that active use of the brain will help to reduce the risk of Alzheimer's disease. I do not know if this can be scientifically proven.

Here is an explanation about Alzheimer's disease from the Yahoo health website.

Alzheimer's disease is a progressive condition that affects areas of the brain involved in memory, intelligence, judgment, language, and behavior. It is the most common form of mental decline, or dementia, in older adults.

Alzheimer's disease is more severe than the mild memory loss that many people experience as they grow older. Alzheimer's disease also affects behavior, personality, the ability to think clearly, and the ability to carry out daily activities. Close family members usually notice symptoms first, although the person affected also may realize that something is wrong.

What causes Alzheimer's disease?
It is not clear why these changes in the brain occur, but research to discover the cause of Alzheimer's disease is ongoing. Although most people who develop Alzheimer's disease do not have a family history of the condition, you are at increased risk for the condition if a member of your family has it.