do you think playing chess helps us to keep our mind stronger and sharper ???

Yes it will keep our mind stronger and sharper. Because in playing chess you must carefully think every move that you will take, what will be the consequences of the move the you make, what will be the advantage in doing that. Just like in life, you must carefully think every action that you will do. Maybe that the logic behind the parents who wants their children to play chess. For then to be wiser in decision making.

HDHORDA4 Obviously, It is good to play chess. I don't think chess as just game rather I regard it as edutainment. It will make our brain to think in different angles and thereby it increases our degree of thinking. Going for classes for this ? You can play with family members and friends.

Absolutely! Any activity that requires thinking, exercises the brain. Even crossword puzzles are good for your brain. reading is a VERY good exercise for your brain. Having your child join a chess club is a great idea but not for everybody. Not everybody's brain works in that way. But there is something that will interest that brain!